blob: 20a216a3e2e040b0f12ba1d69163223379421165 [file] [log] [blame]
package org.eclipse.jdt.core;
/*
* (c) Copyright IBM Corp. 2000, 2001.
* All Rights Reserved.
*/
import org.eclipse.core.runtime.*;
import org.eclipse.core.resources.*;
import java.io.*;
import java.net.URL;
import java.util.*;
import org.eclipse.jdt.internal.compiler.*;
import org.eclipse.jdt.internal.compiler.env.*;
import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
import org.eclipse.jdt.internal.core.*;
import org.eclipse.jdt.internal.core.search.indexing.*;
/**
* The plug-in runtime class for the Java model plug-in containing the core
* (UI-free) support for Java projects.
* <p>
* Like all plug-in runtime classes (subclasses of <code>Plugin</code>), this
* class is automatically instantiated by the platform when the plug-in gets
* activated. Clients must not attempt to instantiate plug-in runtime classes
* directly.
* </p>
* <p>
* The single instance of this class can be accessed from any plug-in declaring
* the Java model plug-in as a prerequisite via
* <code>JavaCore.getJavaCore()</code>. The Java model plug-in will be activated
* automatically if not already active.
* </p>
*/
public final class JavaCore extends Plugin implements IExecutableExtension {
private static Plugin JAVA_CORE_PLUGIN = null;
/**
* The plug-in identifier of the Java core support
* (value <code>"org.eclipse.jdt.core"</code>).
*/
public static final String PLUGIN_ID = "org.eclipse.jdt.core" ; //$NON-NLS-1$
/**
* The identifier for the Java builder
* (value <code>"org.eclipse.jdt.core.javabuilder"</code>).
*/
public static final String BUILDER_ID = PLUGIN_ID + ".javabuilder" ; //$NON-NLS-1$
/**
* The identifier for the Java model
* (value <code>"org.eclipse.jdt.core.javamodel"</code>).
*/
public static final String MODEL_ID = PLUGIN_ID + ".javamodel" ; //$NON-NLS-1$
/**
* The identifier for the Java nature
* (value <code>"org.eclipse.jdt.core.javanature"</code>).
* The presence of this nature on a project indicates that it is
* Java-capable.
*
* @see org.eclipse.core.resources.IProject#hasNature
*/
public static final String NATURE_ID = PLUGIN_ID + ".javanature" ; //$NON-NLS-1$
/**
* Name of the handle id attribute in a Java marker
*/
protected static final String ATT_HANDLE_ID =
"org.eclipse.jdt.internal.core.JavaModelManager.handleId" ; //$NON-NLS-1$
/**
* Names of recognized configurable options
*/
public static final String COMPILER_LOCAL_VARIABLE_ATTR = PLUGIN_ID + ".compiler.debug.localVariable"; //$NON-NLS-1$
public static final String COMPILER_LINE_NUMBER_ATTR = PLUGIN_ID + ".compiler.debug.lineNumber"; //$NON-NLS-1$
public static final String COMPILER_SOURCE_FILE_ATTR = PLUGIN_ID + ".compiler.debug.sourceFile"; //$NON-NLS-1$
public static final String COMPILER_CODEGEN_UNUSED_LOCAL = PLUGIN_ID + ".compiler.codegen.unusedLocal"; //$NON-NLS-1$
public static final String COMPILER_CODEGEN_TARGET_PLATFORM = PLUGIN_ID + ".compiler.codegen.targetPlatform"; //$NON-NLS-1$
public static final String COMPILER_PB_UNREACHABLE_CODE = PLUGIN_ID + ".compiler.problem.unreachableCode"; //$NON-NLS-1$
public static final String COMPILER_PB_INVALID_IMPORT = PLUGIN_ID + ".compiler.problem.invalidImport"; //$NON-NLS-1$
public static final String COMPILER_PB_OVERRIDING_PACKAGE_DEFAULT_METHOD = PLUGIN_ID + ".compiler.problem.overridingPackageDefaultMethod"; //$NON-NLS-1$
public static final String COMPILER_PB_METHOD_WITH_CONSTRUCTOR_NAME = PLUGIN_ID + ".compiler.problem.methodWithConstructorName"; //$NON-NLS-1$
public static final String COMPILER_PB_DEPRECATION = PLUGIN_ID + ".compiler.problem.deprecation"; //$NON-NLS-1$
public static final String COMPILER_PB_HIDDEN_CATCH_BLOCK = PLUGIN_ID + ".compiler.problem.hiddenCatchBlock"; //$NON-NLS-1$
public static final String COMPILER_PB_UNUSED_LOCAL = PLUGIN_ID + ".compiler.problem.unusedLocal"; //$NON-NLS-1$
public static final String COMPILER_PB_UNUSED_PARAMETER = PLUGIN_ID + ".compiler.problem.unusedParameter"; //$NON-NLS-1$
public static final String COMPILER_PB_SYNTHETIC_ACCESS_EMULATION = PLUGIN_ID + ".compiler.problem.syntheticAccessEmulation"; //$NON-NLS-1$
public static final String COMPILER_PB_NON_NLS_STRING_LITERAL = PLUGIN_ID + ".compiler.problem.nonExternalizedStringLiteral"; //$NON-NLS-1$
public static final String COMPILER_PB_ASSERT_IDENTIFIER = PLUGIN_ID + ".compiler.problem.assertIdentifier"; //$NON-NLS-1$
public static final String COMPILER_SOURCE = PLUGIN_ID + ".compiler.source"; //$NON-NLS-1$
public static final String COMPILER_COMPLIANCE = PLUGIN_ID + ".compiler.compliance"; //$NON-NLS-1$
public static final String CORE_JAVA_BUILD_ORDER = PLUGIN_ID + ".computeJavaBuildOrder"; //$NON-NLS-1$
public static final String CORE_JAVA_BUILD_RESOURCE_COPY_FILTER = PLUGIN_ID + ".builder.resourceCopyExclusionFilter"; //$NON-NLS-1$
public static final String CORE_JAVA_BUILD_INVALID_CLASSPATH = PLUGIN_ID + ".builder.invalidClasspath"; //$NON-NLS-1$
public static final String CORE_ENCODING = PLUGIN_ID + ".encoding"; //$NON-NLS-1$
public static final String FORMATTER_NEWLINE_OPENING_BRACE = PLUGIN_ID + ".formatter.newline.openingBrace"; //$NON-NLS-1$
public static final String FORMATTER_NEWLINE_CONTROL = PLUGIN_ID + ".formatter.newline.controlStatement"; //$NON-NLS-1$
public static final String FORMATTER_NEWLINE_ELSE_IF = PLUGIN_ID + ".formatter.newline.elseIf"; //$NON-NLS-1$
public static final String FORMATTER_NEWLINE_EMPTY_BLOCK = PLUGIN_ID + ".formatter.newline.emptyBlock"; //$NON-NLS-1$
public static final String FORMATTER_CLEAR_BLANK_LINES = PLUGIN_ID + ".formatter.newline.clearAll"; //$NON-NLS-1$
public static final String FORMATTER_LINE_SPLIT = PLUGIN_ID + ".formatter.lineSplit"; //$NON-NLS-1$
public static final String FORMATTER_COMPACT_ASSIGNMENT = PLUGIN_ID + ".formatter.style.assignment"; //$NON-NLS-1$
public static final String FORMATTER_TAB_CHAR = PLUGIN_ID + ".formatter.tabulation.char"; //$NON-NLS-1$
public static final String FORMATTER_TAB_SIZE = PLUGIN_ID + ".formatter.tabulation.size"; //$NON-NLS-1$
public static final String CODEASSIST_VISIBILITY_CHECK = PLUGIN_ID + ".codeComplete.visibilityCheck"; //$NON-NLS-1$
public static final String CODEASSIST_IMPLICIT_QUALIFICATION = PLUGIN_ID + ".codeComplete.forceImplicitQualification"; //$NON-NLS-1$
/**
* Possible values for configurable options
*/
public static final String GENERATE = "generate"; //$NON-NLS-1$
public static final String DO_NOT_GENERATE = "do not generate"; //$NON-NLS-1$
public static final String PRESERVE = "preserve"; //$NON-NLS-1$
public static final String OPTIMIZE_OUT = "optimize out"; //$NON-NLS-1$
public static final String VERSION_1_1 = "1.1"; //$NON-NLS-1$
public static final String VERSION_1_2 = "1.2"; //$NON-NLS-1$
public static final String VERSION_1_3 = "1.3"; //$NON-NLS-1$
public static final String VERSION_1_4 = "1.4"; //$NON-NLS-1$
public static final String ABORT = "abort"; //$NON-NLS-1$
public static final String ERROR = "error"; //$NON-NLS-1$
public static final String WARNING = "warning"; //$NON-NLS-1$
public static final String IGNORE = "ignore"; //$NON-NLS-1$
public static final String COMPUTE = "compute"; //$NON-NLS-1$
public static final String INSERT = "insert"; //$NON-NLS-1$
public static final String DO_NOT_INSERT = "do not insert"; //$NON-NLS-1$
public static final String PRESERVE_ONE = "preserve one"; //$NON-NLS-1$
public static final String CLEAR_ALL = "clear all"; //$NON-NLS-1$
public static final String NORMAL = "normal"; //$NON-NLS-1$
public static final String COMPACT = "compact"; //$NON-NLS-1$
public static final String TAB = "tab"; //$NON-NLS-1$
public static final String SPACE = "space"; //$NON-NLS-1$
public static final String ENABLED = "enabled"; //$NON-NLS-1$
public static final String DISABLED = "disabled"; //$NON-NLS-1$
/**
* Creates the Java core plug-in.
*/
public JavaCore(IPluginDescriptor pluginDescriptor) {
super(pluginDescriptor);
JAVA_CORE_PLUGIN = this;
}
/**
* Adds the given listener for changes to Java elements.
* Has no effect if an identical listener is already registered.
*
* This listener will only be notified during the POST_CHANGE resource change notification
* and any reconcile operation (POST_RECONCILE).
* For finer control of the notification, use <code>addElementChangedListener(IElementChangedListener,int)</code>
* which allows to specify a different eventMask.
*
* @see ElementChangedEvent
* @param listener the listener
*/
public static void addElementChangedListener(IElementChangedListener listener) {
addElementChangedListener(listener, ElementChangedEvent.POST_CHANGE | ElementChangedEvent.POST_RECONCILE);
}
/**
* Adds the given listener for changes to Java elements.
* Has no effect if an identical listener is already registered.
* After completion of this method, the given listener will be registered for exactly the
* the specified events. If they were previously registered for other events, they
* will be deregistered.
* <p>
* Once registered, a listener starts receiving notification of changes to
* java elements in the model. The listener continues to receive
* notifications until it is replaced or removed.
* </p>
* <p>
* Listeners can listen for several types of event as defined in <code>ElementChangeEvent</code>.
* Clients are free to register for any number of event types however if they register
* for more than one, it is their responsibility to ensure they correctly handle the
* case where the same java element change shows up in multiple notifications.
* Clients are guaranteed to receive only the events for which they are registered.
* </p>
*
* @param listener the listener
* @param eventMask the bit-wise OR of all event types of interest to the listener
* @see IElementChangedListener
* @see ElementChangedEvent
* @see #removeElementChangedListener(IElementChangedListener)
* @since 2.0
*/
public static void addElementChangedListener(IElementChangedListener listener, int eventMask) {
JavaModelManager.getJavaModelManager().addElementChangedListener(listener, eventMask);
}
/**
* Configures the given marker attribute map for the given Java element.
* Used for markers which denote a Java element rather than a resource.
*
* @param attributes the mutable marker attribute map (key type: <code>String</code>,
* value type: <code>String</code>)
* @param element the Java element for which the marker needs to be configured
*/
public static void addJavaElementMarkerAttributes(
Map attributes,
IJavaElement element) {
if (element instanceof IMember)
element = ((IMember) element).getClassFile();
if (attributes != null && element != null)
attributes.put(ATT_HANDLE_ID, element.getHandleIdentifier());
}
/**
* Configures the given marker for the given Java element.
* Used for markers which denote a Java element rather than a resource.
*
* @param marker the marker to be configured
* @param element the Java element for which the marker needs to be configured
* @exception CoreException if the <code>IMarker.setAttribute</code> on the marker fails
*/
public void configureJavaElementMarker(IMarker marker, IJavaElement element)
throws CoreException {
if (element instanceof IMember)
element = ((IMember) element).getClassFile();
if (marker != null && element != null)
marker.setAttribute(ATT_HANDLE_ID, element.getHandleIdentifier());
}
/**
* Returns the Java model element corresponding to the given handle identifier
* generated by <code>IJavaElement.getHandleIdentifier()</code>, or
* <code>null</code> if unable to create the associated element.
*/
public static IJavaElement create(String handleIdentifier) {
if (handleIdentifier == null) {
return null;
}
try {
return JavaModelManager.getJavaModelManager().getHandleFromMemento(
handleIdentifier);
} catch (JavaModelException e) {
return null;
}
}
/**
* Returns the Java element corresponding to the given file, or
* <code>null</code> if unable to associate the given file
* with a Java element.
*
* <p>The file must be one of:<ul>
* <li>a <code>.java</code> file - the element returned is the corresponding <code>ICompilationUnit</code></li>
* <li>a <code>.class</code> file - the element returned is the corresponding <code>IClassFile</code></li>
* <li>a <code>.jar</code> file - the element returned is the corresponding <code>IPackageFragmentRoot</code></li>
* </ul>
* <p>
* Creating a Java element has the side effect of creating and opening all of the
* element's parents if they are not yet open.
*/
public static IJavaElement create(IFile file) {
return JavaModelManager.create(file, null);
}
/**
* Returns the package fragment or package fragment root corresponding to the given folder, or
* <code>null</code> if unable to associate the given folder with a Java element.
* <p>
* Note that a package fragment root is returned rather than a default package.
* <p>
* Creating a Java element has the side effect of creating and opening all of the
* element's parents if they are not yet open.
*/
public static IJavaElement create(IFolder folder) {
return JavaModelManager.create(folder, null);
}
/**
* Returns the Java project corresponding to the given project.
* <p>
* Creating a Java Project has the side effect of creating and opening all of the
* project's parents if they are not yet open.
* <p>
* Note that no check is done at this time on the existence or the java nature of this project.
*/
public static IJavaProject create(IProject project) {
if (project == null) {
return null;
}
JavaModel javaModel = JavaModelManager.getJavaModelManager().getJavaModel();
return javaModel.getJavaProject(project);
}
/**
* Returns the Java element corresponding to the given resource, or
* <code>null</code> if unable to associate the given resource
* with a Java element.
* <p>
* The resource must be one of:<ul>
* <li>a project - the element returned is the corresponding <code>IJavaProject</code></li>
* <li>a <code>.java</code> file - the element returned is the corresponding <code>ICompilationUnit</code></li>
* <li>a <code>.class</code> file - the element returned is the corresponding <code>IClassFile</code></li>
* <li>a <code>.jar</code> file - the element returned is the corresponding <code>IPackageFragmentRoot</code></li>
* <li>a folder - the element returned is the corresponding <code>IPackageFragmentRoot</code>
* or <code>IPackageFragment</code></li>
* <li>the workspace root resource - the element returned is the <code>IJavaModel</code></li>
* </ul>
* <p>
* Creating a Java element has the side effect of creating and opening all of the
* element's parents if they are not yet open.
*/
public static IJavaElement create(IResource resource) {
return JavaModelManager.create(resource, null);
}
/**
* Returns the Java model.
*/
public static IJavaModel create(IWorkspaceRoot root) {
if (root == null) {
return null;
}
return JavaModelManager.getJavaModelManager().getJavaModel();
}
/**
* Creates and returns a class file element for
* the given <code>.class</code> file. Returns <code>null</code> if unable
* to recognize the class file.
*/
public static IClassFile createClassFileFrom(IFile file) {
return JavaModelManager.createClassFileFrom(file, null);
}
/**
* Creates and returns a compilation unit element for
* the given <code>.java</code> file. Returns <code>null</code> if unable
* to recognize the compilation unit.
*/
public static ICompilationUnit createCompilationUnitFrom(IFile file) {
return JavaModelManager.createCompilationUnitFrom(file, null);
}
/**
* Creates and returns a handle for the given JAR file.
* The Java model associated with the JAR's project may be
* created as a side effect.
* Returns <code>null</code> if unable to create a JAR package fragment root.
* (for example, if the JAR file represents a non-Java resource)
*/
public static IPackageFragmentRoot createJarPackageFragmentRootFrom(IFile file) {
return JavaModelManager.createJarPackageFragmentRootFrom(file, null);
}
/**
* Answers the project specific value for a given classpath container.
* In case this container path could not be resolved, then will answer <code>null</code>.
* Both the container path and the project context are supposed to be non-null.
* <p>
* The containerPath is a 2-segments path, formed by an ID segment followed with an extra
* segment which can be used as an additional hint for resolution. If no container was ever recorded
* for this container path onto this project (using <code>setClasspathContainer</code>, then a
* <code>ClasspathContainerInitializer</code> will be activated if any was registered for this container
* ID onto the extension point "org.eclipse.jdt.core.classpathContainerInitializer".
* <p>
* There is no assumption that the returned container must answer the exact same containerPath
* when requested <code>IClasspathContainer#getPath</code>.
* Indeed, the containerPath is just an indication for resolving it to an actual container object.
* <p>
* Classpath container values are persisted locally to the workspace, but
* are not preserved from a session to another. It is thus highly recommended to register a
* <code>ClasspathContainerInitializer</code> for each referenced container
* (through the extension point "org.eclipse.jdt.core.ClasspathContainerInitializer").
* <p>
* @param containerPath - the name of the container which needs to be resolved
* @param project - a specific project in which the container is being resolved
* @return IClasspathContainer - the corresponding classpath container or <code>null</code> if unable to find one.
*
* @exception JavaModelException if an exception occurred while resolving the container, or if the resolved container
* contains illegal entries (contains CPE_CONTAINER entries or null entries).
*
* @see ClasspathContainerInitializer
* @see IClasspathContainer
* @see #setClasspathContainer(IPath, IJavaProject[], IClasspathContainer[], IProgressMonitor)
* @since 2.0
*/
public static IClasspathContainer getClasspathContainer(IPath containerPath, IJavaProject project) throws JavaModelException {
Map projectContainers = (Map)JavaModelManager.Containers.get(project);
if (projectContainers == null){
projectContainers = new HashMap(1);
JavaModelManager.Containers.put(project, projectContainers);
}
IClasspathContainer container = (IClasspathContainer)projectContainers.get(containerPath);
if (container == JavaModelManager.ContainerInitializationInProgress) return null; // break cycle
if (container == null){
ClasspathContainerInitializer initializer = JavaModelManager.getClasspathContainerInitializer(containerPath.segment(0));
if (initializer != null){
projectContainers.put(containerPath, JavaModelManager.ContainerInitializationInProgress); // avoid initialization cycles
boolean ok = false;
try {
// activate initializer
initializer.initialize(containerPath, project);
// retrieve value (if initialization was successful)
container = (IClasspathContainer)projectContainers.get(containerPath);
ok = true;
} catch(CoreException e){
throw new JavaModelException(e);
} finally {
if (!ok) JavaModelManager.Containers.put(project, null); // flush cache
}
if (container != null){
projectContainers.put(containerPath, container);
}
if (JavaModelManager.CP_RESOLVE_VERBOSE){
System.out.print("CPContainer INIT - after resolution: " + containerPath + " --> "); //$NON-NLS-2$//$NON-NLS-1$
if (container != null){
System.out.print("container: "+container.getDescription()+" {"); //$NON-NLS-2$//$NON-NLS-1$
IClasspathEntry[] entries = container.getClasspathEntries();
if (entries != null){
for (int i = 0; i < entries.length; i++){
if (i > 0) System.out.println(", ");//$NON-NLS-1$
System.out.println(entries[i]);
}
}
System.out.println("}");//$NON-NLS-1$
} else {
System.out.println("{unbound}");//$NON-NLS-1$
}
}
}
}
return container;
}
/**
* Returns the path held in the given classpath variable.
* Returns <node>null</code> if unable to bind.
* <p>
* Classpath variable values are persisted locally to the workspace, and
* are preserved from session to session.
* <p>
* Note that classpath variables can be contributed registered initializers for,
* using the extension point "org.eclipse.jdt.core.classpathVariableInitializer".
*
* @param variableName the name of the classpath variable
* @return the path, or <code>null</code> if none
* @see #setClasspathVariable
*/
public static IPath getClasspathVariable(String variableName) {
IPath variablePath = (IPath) JavaModelManager.Variables.get(variableName);
if (variablePath == JavaModelManager.VariableInitializationInProgress) return null; // break cycle
if (variablePath == null){
ClasspathVariableInitializer initializer = getClasspathVariableInitializer(variableName);
if (initializer != null){
JavaModelManager.Variables.put(variableName, JavaModelManager.VariableInitializationInProgress); // avoid initialization cycles
initializer.initialize(variableName);
variablePath = (IPath) JavaModelManager.Variables.get(variableName); // retry
if (JavaModelManager.CP_RESOLVE_VERBOSE){
System.out.println("CPVariable INIT - after initialization: " + variableName + " --> " + variablePath); //$NON-NLS-2$//$NON-NLS-1$
}
}
}
return variablePath;
}
/**
* Retrieve the client classpath variable initializer registered for a given variable if any
*/
private static ClasspathVariableInitializer getClasspathVariableInitializer(String variable){
Plugin jdtCorePlugin = JavaCore.getPlugin();
if (jdtCorePlugin == null) return null;
IExtensionPoint extension = jdtCorePlugin.getDescriptor().getExtensionPoint(JavaModelManager.CPVARIABLE_INITIALIZER_EXTPOINT_ID);
if (extension != null) {
IExtension[] extensions = extension.getExtensions();
for(int i = 0; i < extensions.length; i++){
IConfigurationElement [] configElements = extensions[i].getConfigurationElements();
IPluginDescriptor plugin = extension.getDeclaringPluginDescriptor();
if (plugin.isPluginActivated()) {
for(int j = 0; j < configElements.length; j++){
try {
String varAttribute = configElements[j].getAttribute("variable"); //$NON-NLS-1$
if (variable.equals(varAttribute)) {
if (JavaModelManager.CP_RESOLVE_VERBOSE) {
System.out.println("CPVariable INIT - found initializer: "+variable+" --> " + configElements[j].getAttribute("class"));//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$
}
Object execExt = configElements[j].createExecutableExtension("class"); //$NON-NLS-1$
if (execExt instanceof ClasspathVariableInitializer){
return (ClasspathVariableInitializer)execExt;
}
}
} catch(CoreException e){
}
}
}
}
}
return null;
}
/**
* Returns the names of all known classpath variables.
* <p>
* Classpath variable values are persisted locally to the workspace, and
* are preserved from session to session.
* <p>
*
* @return the list of classpath variable names
* @see #setClasspathVariable
*/
public static String[] getClasspathVariableNames() {
int length = JavaModelManager.Variables.size();
String[] result = new String[length];
Iterator vars = JavaModelManager.Variables.keySet().iterator();
int index = 0;
while (vars.hasNext()) {
result[index++] = (String) vars.next();
}
return result;
}
/**
* Returns a table of all known configurable options with their default values.
* These options allow to configure the behavior of the underlying components.
* The client may safely use the result as a template that they can modify and
* then pass to <code>setOptions</code>.
*
* Helper constants have been defined on JavaCore for each of the option ID and
* their possible constant values.
*
* Note: more options might be added in further releases.
* </pre>
* RECOGNIZED OPTIONS:
* COMPILER / Generating Local Variable Debug Attribute
* When generated, this attribute will enable local variable names
* to be displayed in debugger, only in place where variables are
* definitely assigned (.class file is then bigger)
* - option id: "org.eclipse.jdt.core.compiler.debug.localVariable"
* - possible values: { "generate", "do not generate" }
* - default: "generate"
*
* COMPILER / Generating Line Number Debug Attribute
* When generated, this attribute will enable source code highlighting in debugger
* (.class file is then bigger).
* - option id: "org.eclipse.jdt.core.compiler.debug.lineNumber"
* - possible values: { "generate", "do not generate" }
* - default: "generate"
*
* COMPILER / Generating Source Debug Attribute
* When generated, this attribute will enable the debugger to present the
* corresponding source code.
* - option id: "org.eclipse.jdt.core.compiler.debug.sourceFile"
* - possible values: { "generate", "do not generate" }
* - default: "generate"
*
* COMPILER / Preserving Unused Local Variables
* Unless requested to preserve unused local variables (i.e. never read), the
* compiler will optimize them out, potentially altering debugging
* - option id: "org.eclipse.jdt.core.compiler.codegen.unusedLocal"
* - possible values: { "preserve", "optimize out" }
* - default: "preserve"
*
* COMPILER / Defining Target Java Platform
* For binary compatibility reason, .class files can be tagged to with certain VM versions and later.
* Note that "1.4" target require to toggle compliance mode to "1.4" too.
* - option id: "org.eclipse.jdt.core.compiler.codegen.targetPlatform"
* - possible values: { "1.1", "1.2", "1.3", "1.4" }
* - default: "1.1"
*
* COMPILER / Reporting Unreachable Code
* Unreachable code can optionally be reported as an error, warning or simply
* ignored. The bytecode generation will always optimized it out.
* - option id: "org.eclipse.jdt.core.compiler.problem.unreachableCode"
* - possible values: { "error", "warning", "ignore" }
* - default: "error"
*
* COMPILER / Reporting Invalid Import
* An import statement that cannot be resolved might optionally be reported
* as an error, as a warning or ignored.
* - option id: "org.eclipse.jdt.core.compiler.problem.invalidImport"
* - possible values: { "error", "warning", "ignore" }
* - default: "error"
*
* COMPILER / Reporting Attempt to Override Package-Default Method
* A package default method is not visible in a different package, and thus
* cannot be overriden. When enabling this option, the compiler will signal
* such scenarii either as an error or a warning.
* - option id: "org.eclipse.jdt.core.compiler.problem.overridingPackageDefaultMethod"
* - possible values: { "error", "warning", "ignore" }
* - default: "warning"
*
* COMPILER / Reporting Method With Constructor Name
* Naming a method with a constructor name is generally considered poor
* style programming. When enabling this option, the compiler will signal such
* scenarii either as an error or a warning.
* - option id: "org.eclipse.jdt.core.compiler.problem.methodWithConstructorName"
* - possible values: { "error", "warning", "ignore" }
* - default: "warning"
*
* COMPILER / Reporting Deprecation
* When enabled, the compiler will signal use of deprecated API either as an
* error or a warning.
* - option id: "org.eclipse.jdt.core.compiler.problem.deprecation"
* - possible values: { "error", "warning", "ignore" }
* - default: "warning"
*
* COMPILER / Reporting Hidden Catch Block
* Locally to a try statement, some catch blocks may hide others , e.g.
* try { throw new java.io.CharConversionException();
* } catch (java.io.CharConversionException e) {
* } catch (java.io.IOException e) {}.
* When enabling this option, the compiler will issue an error or a warning for hidden
* catch blocks corresponding to checked exceptions
* - option id: "org.eclipse.jdt.core.compiler.problem.hiddenCatchBlock"
* - possible values: { "error", "warning", "ignore" }
* - default: "warning"
*
* COMPILER / Reporting Unused Local
* When enabled, the compiler will issue an error or a warning for unused local
* variables (i.e. variables never read from)
* - option id: "org.eclipse.jdt.core.compiler.problem.unusedLocal"
* - possible values: { "error", "warning", "ignore" }
* - default: "ignore"
*
* COMPILER / Reporting Unused Parameter
* When enabled, the compiler will issue an error or a warning for unused method
* parameters (i.e. parameters never read from)
* - option id: "org.eclipse.jdt.core.compiler.problem.unusedParameter"
* - possible values: { "error", "warning", "ignore" }
* - default: "ignore"
*
* COMPILER / Reporting Synthetic Access Emulation
* When enabled, the compiler will issue an error or a warning whenever it emulates
* access to a non-accessible member of an enclosing type. Such access can have
* performance implications.
* - option id: "org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation"
* - possible values: { "error", "warning", "ignore" }
* - default: "ignore"
*
* COMPILER / Reporting Non-Externalized String Literal
* When enabled, the compiler will issue an error or a warning for non externalized
* String literal (i.e. non tagged with //$NON-NLS-<n>$).
* - option id: "org.eclipse.jdt.core.compiler.problem.nonExternalizedStringLiteral"
* - possible values: { "error", "warning", "ignore" }
* - default: "ignore"
*
* COMPILER / Reporting Usage of 'assert' Identifier
* When enabled, the compiler will issue an error or a warning whenever 'assert' is
* used as an identifier (reserved keyword in 1.4)
* - option id: "org.eclipse.jdt.core.compiler.problem.assertIdentifier"
* - possible values: { "error", "warning", "ignore" }
* - default: "ignore"
*
* COMPILER / Setting Source Compatibility Mode
* Specify whether source is 1.3 or 1.4 compatible. From 1.4 on, 'assert' is a keyword
* reserved for assertion support. Also note, than when toggling to 1.4 mode, the target VM
* level should be set to "1.4" and the compliance mode should be "1.4".
* - option id: "org.eclipse.jdt.core.compiler.source"
* - possible values: { "1.3", "1.4" }
* - default: "1.3"
*
* COMPILER / Setting Compliance Level
* Select the compliance level for the compiler. In "1.3" mode, source and target settings
* should not go beyond "1.3" level.
* - option id: "org.eclipse.jdt.core.compiler.compliance"
* - possible values: { "1.3", "1.4" }
* - default: "1.3"
*
* BUILDER / Specifying Filters for Resource Copying Control
* Allow to specify some filters to control the resource copy process.
* Note: no trimming of the names is performed, the list should thus not contain any superfluous
* character.
* - option id: "org.eclipse.jdt.core.builder.resourceCopyExclusionFilter"
* - possible values: { "<name>[,<name>]* } where <name> is a file name pattern (only * wild-cards allowed)
* - default: ""
*
* BUILDER / Abort if Invalid Classpath
* Allow to toggle the builder to abort if the classpath is invalid
* - option id: "org.eclipse.jdt.core.builder.invalidClasspath"
* - possible values: { "abort", "ignore" }
* - default: "ignore"
*
* JAVACORE / Computing Project Build Order
* Indicate whether JavaCore should enforce the project build order to be based on
* the classpath prerequisite chain. When requesting to compute, this takes over
* the platform default order (based on project references).
* - option id: "org.eclipse.jdt.core.computeJavaBuildOrder"
* - possible values: { "compute", "ignore" }
* - default: "ignore"
*
* JAVACORE / Specify Default Source Encoding Format
* Get the encoding format for compiled sources. This setting is read-only, it is equivalent
* to 'ResourcesPlugin.getEncoding()'.
* - option id: "org.eclipse.jdt.core.encoding"
* - possible values: { any of the supported encoding name}.
* - default: <platform default>
*
* FORMATTER / Inserting New Line Before Opening Brace
* When Insert, a new line is inserted before an opening brace, otherwise nothing
* is inserted
* - option id: "org.eclipse.jdt.core.formatter.newline.openingBrace"
* - possible values: { "insert", "do not insert" }
* - default: "do not insert"
*
* FORMATTER / Inserting New Line Inside Control Statement
* When Insert, a new line is inserted between } and following else, catch, finally
* - option id: "org.eclipse.jdt.core.formatter.newline.controlStatement"
* - possible values: { "insert", "do not insert" }
* - default: "do not insert"
*
* FORMATTER / Clearing Blank Lines
* When Clear all, all blank lines are removed. When Preserve one, only one is kept
* and all others removed.
* - option id: "org.eclipse.jdt.core.formatter.newline.clearAll"
* - possible values: { "clear all", "preserve one" }
* - default: "preserve one"
*
* FORMATTER / Inserting New Line Between Else/If
* When Insert, a blank line is inserted between an else and an if when they are
* contiguous. When choosing to not insert, else-if will be kept on the same
* line when possible.
* - option id: "org.eclipse.jdt.core.formatter.newline.elseIf"
* - possible values: { "insert", "do not insert" }
* - default: "do not insert"
*
* FORMATTER / Inserting New Line In Empty Block
* When insert, a line break is inserted between contiguous { and }, if } is not followed
* by a keyword.
* - option id: "org.eclipse.jdt.core.formatter.newline.emptyBlock"
* - possible values: { "insert", "do not insert" }
* - default: "insert"
*
* FORMATTER / Splitting Lines Exceeding Length
* Enable splitting of long lines (exceeding the configurable length). Length of 0 will
* disable line splitting
* - option id: "org.eclipse.jdt.core.formatter.lineSplit"
* - possible values: "<n>", where n is zero or a positive integer
* - default: "80"
*
* FORMATTER / Compacting Assignment
* Assignments can be formatted asymmetrically, e.g. 'int x= 2;', when Normal, a space
* is inserted before the assignment operator
* - option id: "org.eclipse.jdt.core.formatter.style.assignment"
* - possible values: { "compact", "normal" }
* - default: "normal"
*
* FORMATTER / Defining Indentation Character
* Either choose to indent with tab characters or spaces
* - option id: "org.eclipse.jdt.core.formatter.tabulation.char"
* - possible values: { "tab", "space" }
* - default: "tab"
*
* FORMATTER / Defining Space Indentation Length
* When using spaces, set the amount of space characters to use for each
* indentation mark.
* - option id: "org.eclipse.jdt.core.formatter.tabulation.size"
* - possible values: "<n>", where n is a positive integer
* - default: "4"
*
* CODEASSIST / Activate Visibility Sensitive Completion
* When active, completion doesn't show that you can not see
* (eg. you can not see private methods of a super class).
* - option id: "org.eclipse.jdt.core.codeComplete.visibilityCheck"
* - possible values: { "enabled", "disabled" }
* - default: "disabled"
*
* CODEASSIST / Automatic Qualification of Implicit Members
* When active, completion automatically qualifies completion on implicit
* field references and message expressions.
* - option id: "org.eclipse.jdt.core.codeComplete.forceImplicitQualification"
* - possible values: { "enabled", "disabled" }
* - default: "disabled"
* </pre>
*
* @return a mutable table containing the default settings of all known options
* (key type: <code>String</code>; value type: <code>String</code>)
* @see #setOptions
*/
public static Hashtable getDefaultOptions(){
Hashtable defaultOptions = new Hashtable(10);
// see #initializeDefaultPluginPreferences() for changing default settings
Preferences preferences = getPlugin().getPluginPreferences();
// get preferences set to their default
String[] defaultPropertyNames = preferences.defaultPropertyNames();
for (int i = 0; i < defaultPropertyNames.length; i++){
String propertyName = defaultPropertyNames[i];
defaultOptions.put(propertyName, preferences.getDefaultString(propertyName));
}
// get preferences not set to their default
String[] propertyNames = preferences.propertyNames();
for (int i = 0; i < propertyNames.length; i++){
String propertyName = propertyNames[i];
defaultOptions.put(propertyName, preferences.getDefaultString(propertyName));
}
// get encoding through resource plugin
defaultOptions.put(CORE_ENCODING, ""/*ResourcesPlugin.getEncoding()*/); //$NON-NLS-1$
return defaultOptions;
}
/**
* Returns the single instance of the Java core plug-in runtime class.
* Equivalent to <code>(JavaCore) getPlugin()</code>.
*/
public static JavaCore getJavaCore() {
return (JavaCore) getPlugin();
}
/**
* Returns the <code>IJavaProject</code> associated with the
* given <code>IProject</code>, or <code>null</code> if the
* project does not have a Java nature.
*/
private IJavaProject getJavaProject(IProject project) {
try {
if (project.hasNature(NATURE_ID)) {
JavaModel model = JavaModelManager.getJavaModelManager().getJavaModel();
if (model != null) {
return model.getJavaProject(project);
}
}
} catch (CoreException e) {
}
return null;
}
/**
* Returns the table of the current options. Initially, all options have their default values,
* and this method returns a table that includes all known options.
* <p>
* For a complete description of the configurable options, see <code>getDefaultOptions</code>.
* </p>
*
* @return table of current settings of all options
* (key type: <code>String</code>; value type: <code>String</code>)
* @see JavaCore#getDefaultOptions
*/
public static Hashtable getOptions() {
Hashtable options = new Hashtable(10);
// see #initializeDefaultPluginPreferences() for changing default settings
Preferences preferences = getPlugin().getPluginPreferences();
// get preferences set to their default
String[] defaultPropertyNames = preferences.defaultPropertyNames();
for (int i = 0; i < defaultPropertyNames.length; i++){
String propertyName = defaultPropertyNames[i];
options.put(propertyName, preferences.getString(propertyName));
}
// get preferences not set to their default
String[] propertyNames = preferences.propertyNames();
for (int i = 0; i < propertyNames.length; i++){
String propertyName = propertyNames[i];
options.put(propertyName, preferences.getString(propertyName));
}
// get encoding through resource plugin
options.put(CORE_ENCODING, ""/*ResourcesPlugin.getEncoding()*/); //$NON-NLS-1$
return options;
}
/**
* Returns the single instance of the Java core plug-in runtime class.
*/
public static Plugin getPlugin() {
return JAVA_CORE_PLUGIN;
}
/**
* This is a helper method which returns the resolved classpath entry denoted
* by a given entry (if it is a variable entry). It is obtained by resolving the variable
* reference in the first segment. Returns <node>null</code> if unable to resolve using
* the following algorithm:
* <ul>
* <li> if variable segment cannot be resolved, returns <code>null</code></li>
* <li> finds a project, JAR or binary folder in the workspace at the resolved path location</li>
* <li> if none finds an external JAR file or folder outside the workspace at the resolved path location </li>
* <li> if none returns <code>null</code></li>
* </ul>
* <p>
* Variable source attachment path and root path are also resolved and recorded in the resulting classpath entry.
* <p>
* NOTE: This helper method does not handle classpath containers, for which should rather be used
* <code>JavaCore#getResolvedClasspathContainer(IPath, IJavaProject)</code>.
* <p>
* @return the resolved library or project classpath entry, or <code>null</code>
* if the given variable entry could not be resolved to a valid classpath entry
*/
public static IClasspathEntry getResolvedClasspathEntry(IClasspathEntry entry) {
if (entry.getEntryKind() != IClasspathEntry.CPE_VARIABLE)
return entry;
IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();
IPath resolvedPath = JavaCore.getResolvedVariablePath(entry.getPath());
if (resolvedPath == null)
return null;
Object target = JavaModel.getTarget(workspaceRoot, resolvedPath, false);
if (target == null)
return null;
// inside the workspace
if (target instanceof IResource) {
IResource resolvedResource = (IResource) target;
if (resolvedResource != null) {
switch (resolvedResource.getType()) {
case IResource.PROJECT :
// internal project
return JavaCore.newProjectEntry(resolvedPath, entry.isExported());
case IResource.FILE :
String extension = resolvedResource.getFileExtension();
if ("jar".equalsIgnoreCase(extension) //$NON-NLS-1$
|| "zip".equalsIgnoreCase(extension)) { //$NON-NLS-1$
// internal binary archive
return JavaCore.newLibraryEntry(
resolvedPath,
getResolvedVariablePath(entry.getSourceAttachmentPath()),
getResolvedVariablePath(entry.getSourceAttachmentRootPath()),
entry.isExported());
}
break;
case IResource.FOLDER :
// internal binary folder
return JavaCore.newLibraryEntry(
resolvedPath,
getResolvedVariablePath(entry.getSourceAttachmentPath()),
getResolvedVariablePath(entry.getSourceAttachmentRootPath()),
entry.isExported());
}
}
}
// outside the workspace
if (target instanceof File) {
File externalFile = (File) target;
if (externalFile.isFile()) {
String fileName = externalFile.getName().toLowerCase();
if (fileName.endsWith(".jar" //$NON-NLS-1$
) || fileName.endsWith(".zip" //$NON-NLS-1$
)) { // external binary archive
return JavaCore.newLibraryEntry(
resolvedPath,
getResolvedVariablePath(entry.getSourceAttachmentPath()),
getResolvedVariablePath(entry.getSourceAttachmentRootPath()),
entry.isExported());
}
} else { // external binary folder
if (resolvedPath.isAbsolute()){
return JavaCore.newLibraryEntry(
resolvedPath,
getResolvedVariablePath(entry.getSourceAttachmentPath()),
getResolvedVariablePath(entry.getSourceAttachmentRootPath()),
entry.isExported());
}
}
}
return null;
}
/**
* Resolve a variable path (helper method)
*/
public static IPath getResolvedVariablePath(IPath variablePath) {
if (variablePath == null)
return null;
int count = variablePath.segmentCount();
if (count == 0)
return null;
// lookup variable
String variableName = variablePath.segment(0);
IPath resolvedPath = JavaCore.getClasspathVariable(variableName);
if (resolvedPath == null)
return null;
// append path suffix
if (count > 1) {
resolvedPath = resolvedPath.append(variablePath.removeFirstSegments(1));
}
return resolvedPath;
}
/**
* Initializes the default preferences settings for this plug-in.
*/
protected void initializeDefaultPluginPreferences() {
Preferences preferences = getPluginPreferences();
// Compiler settings
preferences.setDefault("org.eclipse.jdt.core.compiler.debug.localVariable", "generate"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.debug.lineNumber", "generate"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.debug.sourceFile", "generate"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.codegen.unusedLocal", "preserve"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.codegen.targetPlatform", "1.1"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.problem.unreachableCode", "error"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.problem.invalidImport", "error"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.problem.overridingPackageDefaultMethod", "warning"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.problem.methodWithConstructorName", "warning"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.problem.deprecation", "warning"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.problem.hiddenCatchBlock", "warning"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.problem.unusedLocal", "ignore"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.problem.unusedParameter", "ignore"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation", "ignore"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.problem.nonExternalizedStringLiteral", "ignore"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.problem.assertIdentifier", "ignore"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.source", "1.3"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.compiler.compliance", "1.3"); //$NON-NLS-1$ //$NON-NLS-2$
// Builder settings
preferences.setDefault("org.eclipse.jdt.core.builder.resourceCopyExclusionFilter", ""); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.builder.invalidClasspath", "ignore"); //$NON-NLS-1$ //$NON-NLS-2$
// JavaCore settings
preferences.setDefault("org.eclipse.jdt.core.computeJavaBuildOrder", "ignore"); //$NON-NLS-1$ //$NON-NLS-2$
// Formatter settings
preferences.setDefault("org.eclipse.jdt.core.formatter.newline.openingBrace", "do not insert"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.formatter.newline.controlStatement", "do not insert"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.formatter.newline.clearAll", "preserve one"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.formatter.newline.elseIf", "do not insert"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.formatter.newline.emptyBlock", "insert"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.formatter.lineSplit", "80"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.formatter.style.assignment", "normal"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.formatter.tabulation.char", "tab"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.formatter.tabulation.size", "4"); //$NON-NLS-1$ //$NON-NLS-2$
// CodeAssist settings
preferences.setDefault("org.eclipse.jdt.core.codeComplete.visibilityCheck", "disabled"); //$NON-NLS-1$ //$NON-NLS-2$
preferences.setDefault("org.eclipse.jdt.core.codeComplete.forceImplicitQualification", "disabled"); //$NON-NLS-1$ //$NON-NLS-2$
}
/**
* Returns whether the given marker references the given Java element.
* Used for markers which denote a Java element rather than a resource.
*
* @param element the element
* @param marker the marker
* @return <code>true</code> if the marker references the element
* @exception CoreException if the <code>IMarker.getAttribute</code> on the marker fails
*/
public static boolean isReferencedBy(IJavaElement element, IMarker marker)
throws CoreException {
if (element instanceof IMember)
element = ((IMember) element).getClassFile();
return (
element != null
&& marker != null
&& element.getHandleIdentifier().equals(marker.getAttribute(ATT_HANDLE_ID)));
}
/**
* Returns whether the given marker delta references the given Java element.
* Used for markers deltas which denote a Java element rather than a resource.
*
* @param element the element
* @param markerDelta the marker delta
* @return <code>true</code> if the marker delta references the element
* @exception CoreException if the <code>IMarkerDelta.getAttribute</code> on the marker delta fails
*/
public static boolean isReferencedBy(
IJavaElement element,
IMarkerDelta markerDelta)
throws CoreException {
if (element instanceof IMember)
element = ((IMember) element).getClassFile();
return element != null
&& markerDelta != null
&& element.getHandleIdentifier().equals(markerDelta.getAttribute(ATT_HANDLE_ID));
}
/**
* Creates and returns a new classpath entry of kind <code>CPE_CONTAINER</code>
* for the given path. The path of the container will be used during resolution so as to map this
* container entry to a set of other classpath entries the container is acting for.
* <p>
* A container entry allows to express indirect references to a set of libraries, projects and variable entries,
* which can be interpreted differently for each Java project where it is used.
* A classpath container entry can be resolved using <code>JavaCore#getResolvedClasspathContainer</code>,
* and updated with <code>JavaCore#classpathContainerChanged</code>
* <p>
* A container is exclusively resolved by a <code>ClasspathContainerInitializer</code> registered onto the
* extension point "org.eclipse.jdt.core.classpathContainerInitializer".
* <p>
* A container path must be exactly formed of 2 segments, where: <ul>
* <li> the first segment is a unique ID identifying the target container, there must be a container initializer registered
* onto this ID through the extension point "org.eclipse.jdt.core.classpathContainerInitializer". </li>
* <li> the second segment is a string which will be passed onto the initializer, and can be used as an additional
* hint during the resolution phase. </li>
* <p>
* Example of an ClasspathContainerInitializer for a classpath container denoting a default JDK container:
*
* containerEntry = JavaCore.newContainerEntry(new Path("MyProvidedJDK/default"));
*
* <extension
* point="org.eclipse.jdt.core.classpathContainerInitializer">
* <containerInitializer
* id="MyProvidedJDK"
* class="com.example.MyInitializer"/>
* <p>
* Note that this operation does not attempt to validate classpath containers
* or access the resources at the given paths.
* <p>
* The resulting entry is not exported to dependent projects. This method is equivalent to
* <code>newContainerEntry(-,false)</code>.
* <p>
* @param containerPath - the path identifying the container, it must be formed of two
* segments
* @return a new container classpath entry
*
* @see JavaCore#getClasspathContainer(IPath, IJavaProject)
* @see JavaCore#newContainerEntry(IPath, boolean)
* @since 2.0
*/
public static IClasspathEntry newContainerEntry(IPath containerPath) {
return newContainerEntry(containerPath, false);
}
/**
* Creates and returns a new classpath entry of kind <code>CPE_CONTAINER</code>
* for the given path. The path of the container will be used during resolution so as to map this
* container entry to a set of other classpath entries the container is acting for.
* <p>
* A container entry allows to express indirect references to a set of libraries, projects and variable entries,
* which can be interpreted differently for each Java project where it is used.
* A classpath container entry can be resolved using <code>JavaCore#getResolvedClasspathContainer</code>,
* and updated with <code>JavaCore#classpathContainerChanged</code>
* <p>
* A container is exclusively resolved by a <code>ClasspathContainerInitializer</code> registered onto the
* extension point "org.eclipse.jdt.core.classpathContainerInitializer".
* <p>
* A container path must be exactly formed of 2 segments, where: <ul>
* <li> the first segment is a unique ID identifying the target container, there must be a container initializer registered
* onto this ID through the extension point "org.eclipse.jdt.core.classpathContainerInitializer". </li>
* <li> the second segment is a string which will be passed onto the initializer, and can be used as an additional
* hint during the initialization phase. </li>
* <p>
* Example of an ClasspathContainerInitializer for a classpath container denoting a default JDK container:
*
* containerEntry = JavaCore.newContainerEntry(new Path("MyProvidedJDK/default"));
*
* <extension
* point="org.eclipse.jdt.core.classpathContainerInitializer">
* <containerInitializer
* id="MyProvidedJDK"
* class="com.example.MyInitializer"/>
* <p>
* Note that this operation does not attempt to validate classpath containers
* or access the resources at the given paths.
* <p>
* @param containerPath - the path identifying the container, it must be formed of two
* segments
* @param isExported - a boolean indicating whether this entry is contributed to dependent
* projects in addition to the output location
* @return a new container classpath entry
*
* @see JavaCore#getClasspathContainer(IPath, IJavaProject)
* @see JavaCore#setClasspathContainer(IPath, IJavaProject[], IClasspathContainer[], IProgressMonitor)
* @see JavaCore#newContainerEntry(IPath, boolean)
* @since 2.0
*/
public static IClasspathEntry newContainerEntry(IPath containerPath, boolean isExported) {
Assert.isTrue(
containerPath != null && containerPath.segmentCount() == 2,
Util.bind("classpath.illegalContainerPath" )); //$NON-NLS-1$
return new ClasspathEntry(
IPackageFragmentRoot.K_SOURCE,
IClasspathEntry.CPE_CONTAINER,
containerPath,
null,
null,
isExported);
}
/**
* Creates and returns a new non-exported classpath entry of kind <code>CPE_LIBRARY</code> for the
* JAR or folder identified by the given absolute path. This specifies that all package fragments
* within the root will have children of type <code>IClassFile</code>.
* <p>
* A library entry is used to denote a prerequisite JAR or root folder containing binaries.
* The target JAR or folder can either be defined internally to the workspace (absolute path relative
* to the workspace root) or externally to the workspace (absolute path in the file system).
* <p>
* e.g. Here are some examples of binary path usage<ul>
* <li><code> "c:/jdk1.2.2/jre/lib/rt.jar" </code> - reference to an external JAR</li>
* <li><code> "/Project/someLib.jar" </code> - reference to an internal JAR </li>
* <li><code> "c:/classes/" </code> - reference to an external binary folder</li>
* </ul>
* Note that this operation does not attempt to validate or access the
* resources at the given paths.
* <p>
* The resulting entry is not exported to dependent projects. This method is equivalent to
* <code>newLibraryEntry(-,-,-,false)</code>.
* <p>
*
* @param path the absolute path of the binary archive
* @param sourceAttachmentPath the absolute path of the corresponding source archive,
* or <code>null</code> if none
* @param sourceAttachmentRootPath the location of the root within the source archive
* or <code>null</code> if <code>archivePath</code> is also <code>null</code>
* @return a new library classpath entry
*
* @see #newLibraryEntry(IPath, IPath, IPath, boolean)
*/
public static IClasspathEntry newLibraryEntry(
IPath path,
IPath sourceAttachmentPath,
IPath sourceAttachmentRootPath) {
return newLibraryEntry(path, sourceAttachmentPath, sourceAttachmentRootPath, false);
}
/**
* Creates and returns a new classpath entry of kind <code>CPE_LIBRARY</code> for the JAR or folder
* identified by the given absolute path. This specifies that all package fragments within the root
* will have children of type <code>IClassFile</code>.
* <p>
* A library entry is used to denote a prerequisite JAR or root folder containing binaries.
* The target JAR or folder can either be defined internally to the workspace (absolute path relative
* to the workspace root) or externally to the workspace (absolute path in the file system).
* <p>
* e.g. Here are some examples of binary path usage<ul>
* <li><code> "c:/jdk1.2.2/jre/lib/rt.jar" </code> - reference to an external JAR</li>
* <li><code> "/Project/someLib.jar" </code> - reference to an internal JAR </li>
* <li><code> "c:/classes/" </code> - reference to an external binary folder</li>
* </ul>
* Note that this operation does not attempt to validate or access the
* resources at the given paths.
* <p>
*
* @param path the absolute path of the binary archive
* @param sourceAttachmentPath the absolute path of the corresponding source archive,
* or <code>null</code> if none
* @param sourceAttachmentRootPath the location of the root within the source archive
* or <code>null</code> if <code>archivePath</code> is also <code>null</code>
* @param isExported indicates whether this entry is contributed to dependent
* projects in addition to the output location
* @return a new library classpath entry
* @since 2.0
*/
public static IClasspathEntry newLibraryEntry(
IPath path,
IPath sourceAttachmentPath,
IPath sourceAttachmentRootPath,
boolean isExported) {
Assert.isTrue(
path.isAbsolute(),
Util.bind("classpath.needAbsolutePath" )); //$NON-NLS-1$
return new ClasspathEntry(
IPackageFragmentRoot.K_BINARY,
IClasspathEntry.CPE_LIBRARY,
JavaProject.canonicalizedPath(path),
sourceAttachmentPath,
sourceAttachmentRootPath,
isExported);
}
/**
* Creates and returns a new non-exported classpath entry of kind <code>CPE_PROJECT</code>
* for the project identified by the given absolute path.
* <p>
* A project entry is used to denote a prerequisite project on a classpath.
* The referenced project will be contributed as a whole, either as sources (in the Java Model, it
* contributes all its package fragment roots) or as binaries (when building, it contributes its
* whole output location).
* <p>
* A project reference allows to indirect through another project, independently from its internal layout.
* <p>
* The prerequisite project is referred to using an absolute path relative to the workspace root.
* <p>
* The resulting entry is not exported to dependent projects. This method is equivalent to
* <code>newProjectEntry(_,false)</code>.
* <p>
*
* @param path the absolute path of the binary archive
* @return a new project classpath entry
*
* @see JavaCore#newProjectEntry(IPath, boolean)
*/
public static IClasspathEntry newProjectEntry(IPath path) {
return newProjectEntry(path, false);
}
/**
* Creates and returns a new classpath entry of kind <code>CPE_PROJECT</code>
* for the project identified by the given absolute path.
* <p>
* A project entry is used to denote a prerequisite project on a classpath.
* The referenced project will be contributed as a whole, either as sources (in the Java Model, it
* contributes all its package fragment roots) or as binaries (when building, it contributes its
* whole output location).
* <p>
* A project reference allows to indirect through another project, independently from its internal layout.
* <p>
* The prerequisite project is referred to using an absolute path relative to the workspace root.
* <p>
*
* @param path the absolute path of the prerequisite project
* @param isExported indicates whether this entry is contributed to dependent
* projects in addition to the output location
* @return a new project classpath entry
* @since 2.0
*/
public static IClasspathEntry newProjectEntry(IPath path, boolean isExported) {
Assert.isTrue(
path.isAbsolute(),
Util.bind("classpath.needAbsolutePath" )); //$NON-NLS-1$
return new ClasspathEntry(
IPackageFragmentRoot.K_SOURCE,
IClasspathEntry.CPE_PROJECT,
path,
null,
null,
isExported);
}
/**
* Returns a new empty region.
*/
public static IRegion newRegion() {
return new Region();
}
/**
* Creates and returns a new classpath entry of kind <code>CPE_SOURCE</code> for the project's source folder
* identified by the given absolute path. This specifies that all package fragments within the root will
* have children of type <code>ICompilationUnit</code>.
* <p>
* The source folder is referred to using an absolute path relative to the workspace root, e.g. <code>"/Project/src"</code>.
* </p>
* <p>
* A source entry is used to setup the internal source layout of a project, and cannot be used out of the
* context of the containing project (a source entry "Proj1/src" cannot be used on the classpath of Proj2).
* </p>
* <p>
* A particular source entry cannot be exported to other projects. All sources/binaries inside a project are
* contributed as a whole through a project entry (see <code>JavaCore.newProjectEntry</code>).
* </p>
*
* @param path the absolute path of a source folder
* @return a new source classpath entry
*/
public static IClasspathEntry newSourceEntry(IPath path) {
Assert.isTrue(
path.isAbsolute(),
Util.bind("classpath.needAbsolutePath" )); //$NON-NLS-1$
return new ClasspathEntry(
IPackageFragmentRoot.K_SOURCE,
IClasspathEntry.CPE_SOURCE,
path,
null,
null,
false);
}
/**
* Creates and returns a new non-exported classpath entry of kind <code>CPE_VARIABLE</code>
* for the given path. The first segment of the path is the name of a classpath variable.
* The trailing segments of the path will be appended to resolved variable path.
* <p>
* A variable entry allows to express indirect references on a classpath to other projects or libraries,
* depending on what the classpath variable is referring.
* <p>
* It is possible to register an automatic initializer (<code>ClasspathVariableInitializer</code>)
* which will be invoked through the extension point "org.eclipse.jdt.core.classpathVariableInitializer".
* After resolution, a classpath variable entry may either correspond to a project or a library entry. </li>
* <p>
* e.g. Here are some examples of variable path usage<ul>
* <li><"JDTCORE" where variable <code>JDTCORE</code> is
* bound to "c:/jars/jdtcore.jar". The resoved classpath entry is denoting the library "c:\jars\jdtcore.jar"</li>
* <li> "JDTCORE" where variable <code>JDTCORE</code> is
* bound to "/Project_JDTCORE". The resoved classpath entry is denoting the project "/Project_JDTCORE"</li>
* <li> "PLUGINS/com.example/example.jar" where variable <code>PLUGINS</code>
* is bound to "c:/eclipse/plugins". The resolved classpath entry is denoting the library "c:/eclipse/plugins/com.example/example.jar"</li>
* </ul>
* Note that this operation does not attempt to validate classpath variables
* or access the resources at the given paths.
* <p>
* The resulting entry is not exported to dependent projects. This method is equivalent to
* <code>newVariableEntry(-,-,-,false)</code>.
* <p>
*
* @param variablePath the path of the binary archive; first segment is the
* name of a classpath variable
* @param variableSourceAttachmentPath the path of the corresponding source archive,
* or <code>null</code> if none; if present, the first segment is the
* name of a classpath variable (not necessarily the same variable
* as the one that begins <code>variablePath</code>)
* @param sourceAttachmentRootPath the location of the root within the source archive
* or <code>null</code> if <code>archivePath</code> is also <code>null</code>
* @return a new library classpath entry
*
* @see JavaCore#newVariableEntry(IPath, IPath, IPath, boolean)
*/
public static IClasspathEntry newVariableEntry(
IPath variablePath,
IPath variableSourceAttachmentPath,
IPath sourceAttachmentRootPath) {
Assert.isTrue(
variablePath != null && variablePath.segmentCount() >= 1,
Util.bind("classpath.illegalVariablePath" )); //$NON-NLS-1$
return newVariableEntry(variablePath, variableSourceAttachmentPath, sourceAttachmentRootPath, false);
}
/**
* Creates and returns a new non-exported classpath entry of kind <code>CPE_VARIABLE</code>
* for the given path. The first segment of the path is the name of a classpath variable.
* The trailing segments of the path will be appended to resolved variable path.
* <p>
* A variable entry allows to express indirect references on a classpath to other projects or libraries,
* depending on what the classpath variable is referring.
* <p>
* It is possible to register an automatic initializer (<code>ClasspathVariableInitializer</code>)
* which will be invoked through the extension point "org.eclipse.jdt.core.classpathVariableInitializer".
* After resolution, a classpath variable entry may either correspond to a project or a library entry. </li>
* <p>
* e.g. Here are some examples of variable path usage<ul>
* <li><"JDTCORE" where variable <code>JDTCORE</code> is
* bound to "c:/jars/jdtcore.jar". The resoved classpath entry is denoting the library "c:\jars\jdtcore.jar"</li>
* <li> "JDTCORE" where variable <code>JDTCORE</code> is
* bound to "/Project_JDTCORE". The resoved classpath entry is denoting the project "/Project_JDTCORE"</li>
* <li> "PLUGINS/com.example/example.jar" where variable <code>PLUGINS</code>
* is bound to "c:/eclipse/plugins". The resolved classpath entry is denoting the library "c:/eclipse/plugins/com.example/example.jar"</li>
* </ul>
* Note that this operation does not attempt to validate classpath variables
* or access the resources at the given paths.
* <p>
*
* @param variablePath the path of the binary archive; first segment is the
* name of a classpath variable
* @param variableSourceAttachmentPath the path of the corresponding source archive,
* or <code>null</code> if none; if present, the first segment is the
* name of a classpath variable (not necessarily the same variable
* as the one that begins <code>variablePath</code>)
* @param sourceAttachmentRootPath the location of the root within the source archive
* or <code>null</code> if <code>archivePath</code> is also <code>null</code>
* @param isExported indicates whether this entry is contributed to dependent
* projects in addition to the output location
* @return a new variable classpath entry
* @since 2.0
*/
public static IClasspathEntry newVariableEntry(
IPath variablePath,
IPath variableSourceAttachmentPath,
IPath sourceAttachmentRootPath,
boolean isExported) {
Assert.isTrue(
variablePath != null && variablePath.segmentCount() >= 1,
Util.bind("classpath.illegalVariablePath" )); //$NON-NLS-1$
return new ClasspathEntry(
IPackageFragmentRoot.K_SOURCE,
IClasspathEntry.CPE_VARIABLE,
variablePath,
variableSourceAttachmentPath,
sourceAttachmentRootPath,
isExported);
}
/**
* Removed the given classpath variable. Does nothing if no value was
* set for this classpath variable.
* <p>
* This functionality cannot be used while the resource tree is locked.
* <p>
* Classpath variable values are persisted locally to the workspace, and
* are preserved from session to session.
* <p>
*
* @param variableName the name of the classpath variable
* @see #setClasspathVariable
*
* @deprecated - use version with extra IProgressMonitor
*/
public static void removeClasspathVariable(String variableName) {
removeClasspathVariable(variableName, null);
}
/**
* Removed the given classpath variable. Does nothing if no value was
* set for this classpath variable.
* <p>
* This functionality cannot be used while the resource tree is locked.
* <p>
* Classpath variable values are persisted locally to the workspace, and
* are preserved from session to session.
* <p>
*
* @param variableName the name of the classpath variable
* @param monitor the progress monitor to report progress
* @see #setClasspathVariable
*/
public static void removeClasspathVariable(
String variableName,
IProgressMonitor monitor) {
try {
updateVariableValues(new String[]{ variableName}, new IPath[]{ null }, monitor);
} catch (JavaModelException e) {
}
}
/**
* Removes the given element changed listener.
* Has no affect if an identical listener is not registered.
*
* @param listener the listener
*/
public static void removeElementChangedListener(IElementChangedListener listener) {
JavaModelManager.getJavaModelManager().removeElementChangedListener(listener);
}
/**
* Bind a container reference path to some actual containers (<code>IClasspathContainer</code>).
* This API must be invoked whenever changes in container need to be reflected onto the JavaModel.
* Containers can have distinct values in different projects, therefore this API considers a
* set of projects with their respective containers.
* <p>
* <code>containerPath</code> is the path under which these values can be referenced through
* container classpath entries (<code>IClasspathEntry#CPE_CONTAINER</code>). A container path
* is a 2-segments path, formed by an ID segment followed with an extra segment which can be
* used as an additional hint for the resolution. The container ID is used to identify a
* <code>ClasspathContainerInitializer</code> registered on the extension point
* "org.eclipse.jdt.core.classpathContainerInitializer".
* <p>
* There is no assumption that each individual container value passed in argument
* (<code>respectiveContainers</code>) must answer the exact same path when requested
* <code>IClasspathContainer#getPath</code>.
* Indeed, the containerPath is just an indication for resolving it to an actual container object. It can be
* delegated to a <code>ClasspathContainerInitializer</code>, which can be activated through the extension
* point "org.eclipse.jdt.core.ClasspathContainerInitializer").
* <p>
* In reaction to changing container values, the JavaModel will be updated to reflect the new
* state of the updated container.
* <p>
* This functionality cannot be used while the resource tree is locked.
* <p>
* Classpath container values are persisted locally to the workspace, but
* are not preserved from a session to another. It is thus highly recommended to register a
* <code>ClasspathContainerInitializer</code> for each referenced container
* (through the extension point "org.eclipse.jdt.core.ClasspathContainerInitializer").
* <p>
*
* @param containerPath - the name of the container reference which is being updated
* @param affectedProjects - the set of projects for which this container is being bound
* @param respectiveContainers - the set of respective containers for the affected projects
* @param monitor a monitor to report progress
*
* @see ClasspathContainerInitializer
* @see #getClasspathContainer(IPath, IJavaProject)
* @see IClasspathContainer
* @since 2.0
*/
public static void setClasspathContainer(IPath containerPath, IJavaProject[] affectedProjects, IClasspathContainer[] respectiveContainers, IProgressMonitor monitor) throws JavaModelException {
Assert.isTrue(affectedProjects.length == respectiveContainers.length, Util.bind("classpath.mismatchProjectsContainers" )); //$NON-NLS-1$
if (monitor != null && monitor.isCanceled()) return;
int projectLength = affectedProjects.length;
JavaModelManager manager = JavaModelManager.getJavaModelManager();
IClasspathEntry[][] oldResolvedPaths = new IClasspathEntry[projectLength][];
// filter out unmodified project containers
int remaining = 0;
for (int i = 0; i < projectLength; i++){
if (monitor != null && monitor.isCanceled()) return;
IJavaProject affectedProject = affectedProjects[i];
IClasspathContainer newContainer = respectiveContainers[i];
IClasspathEntry[] rawClasspath = affectedProject.getRawClasspath();
boolean found = false;
for (int j = 0, cpLength = rawClasspath.length; j <cpLength; j++) {
IClasspathEntry entry = rawClasspath[j];
if (entry.getEntryKind() == IClasspathEntry.CPE_CONTAINER && entry.getPath().equals(containerPath)){
found = true;
break;
}
}
if (!found){
affectedProjects[i] = null; // filter out this project - does not reference the container path
continue;
}
Map perProjectContainers = (Map)JavaModelManager.Containers.get(affectedProject);
if (perProjectContainers == null){
perProjectContainers = new HashMap();
JavaModelManager.Containers.put(affectedProject, perProjectContainers);
} else {
IClasspathContainer oldContainer = (IClasspathContainer) perProjectContainers.get(containerPath);
if (oldContainer != null && oldContainer.equals(respectiveContainers[i])){
affectedProjects[i] = null; // filter out this project - container did not change
continue;
}
}
remaining++;
oldResolvedPaths[i] = affectedProject.getResolvedClasspath(true);
perProjectContainers.put(containerPath, newContainer);
}
if (remaining == 0) return;
// trigger model refresh
boolean wasFiring = manager.isFiring();
int count = 0;
try {
if (wasFiring)
manager.stopDeltas();
for(int i = 0; i < projectLength; i++){
if (monitor != null && monitor.isCanceled()) return;
JavaProject affectedProject = (JavaProject)affectedProjects[i];
if (affectedProject == null) continue; // was filtered out
if (++count == remaining) { // re-enable firing for the last operation
if (wasFiring) {
wasFiring = false;
manager.startDeltas();
}
}
// force a refresh of the affected project (will compute deltas)
affectedProject.setRawClasspath(
affectedProject.getRawClasspath(),
SetClasspathOperation.ReuseOutputLocation,
monitor,
true,
affectedProject.getWorkspace().isAutoBuilding(),
oldResolvedPaths[i],
remaining == 1); // no individual cycle check if more than 1 project
}
if (remaining > 1){
try {
// use workspace runnable so as to allow marker creation - workaround bug 14733
// ResourcesPlugin.getWorkspace().run(
// new IWorkspaceRunnable() {
// public void run(IProgressMonitor monitor) throws CoreException {
JavaProject.updateAllCycleMarkers(); // update them all at once
// }
// },
// monitor);
} catch(CoreException e){
throw new JavaModelException(e);
}
}
} finally {
if (wasFiring) {
manager.startDeltas();
// in case of exception traversing, deltas may be fired only in the next #fire() iteration
}
}
}
/**
* Sets the value of the given classpath variable.
* The path must have at least one segment.
* <p>
* This functionality cannot be used while the resource tree is locked.
* <p>
* Classpath variable values are persisted locally to the workspace, and
* are preserved from session to session.
* <p>
*
* @param variableName the name of the classpath variable
* @param path the path
* @see #getClasspathVariable
*
* @deprecated - use API with IProgressMonitor
*/
public static void setClasspathVariable(String variableName, IPath path)
throws JavaModelException {
setClasspathVariable(variableName, path, null);
}
/**
* Sets the value of the given classpath variable.
* The path must not be null.
* <p>
* This functionality cannot be used while the resource tree is locked.
* <p>
* Classpath variable values are persisted locally to the workspace, and
* are preserved from session to session.
* <p>
* Updating a variable with the same value has no effect.
*
* @param variableName the name of the classpath variable
* @param path the path
* @param monitor a monitor to report progress
* @see #getClasspathVariable
*/
public static void setClasspathVariable(
String variableName,
IPath path,
IProgressMonitor monitor)
throws JavaModelException {
Assert.isTrue(path != null, Util.bind("classpath.nullVariablePath" )); //$NON-NLS-1$
setClasspathVariables(new String[]{variableName}, new IPath[]{ path }, monitor);
}
/**
* Sets the values of all the given classpath variables at once.
* Null paths can be used to request corresponding variable removal.
* <p>
* This functionality cannot be used while the resource tree is locked.
* <p>
* Classpath variable values are persisted locally to the workspace, and
* are preserved from session to session.
* <p>
* Updating a variable with the same value has no effect.
*
* @param variableNames - an array of names for the updated classpath variables
* @param variablePaths - an array of path updates for the modified classpath variables (null
* meaning that the corresponding value will be removed
* @param monitor a monitor to report progress
* @see #getClasspathVariable
* @since 2.0
*/
public static void setClasspathVariables(
String[] variableNames,
IPath[] paths,
IProgressMonitor monitor)
throws JavaModelException {
Assert.isTrue(variableNames.length == paths.length, Util.bind("classpath.mismatchNamePath" )); //$NON-NLS-1$
updateVariableValues(variableNames, paths, monitor);
}
/* (non-Javadoc)
* Method declared on IExecutableExtension.
* Record any necessary initialization data from the plugin.
*/
public void setInitializationData(
IConfigurationElement cfig,
String propertyName,
Object data)
throws CoreException {
}
/**
* Sets the current table of options. All and only the options explicitly included in the given table
* are remembered; all previous option settings are forgotten, including ones not explicitly
* mentioned.
* <p>
* For a complete description of the configurable options, see <code>getDefaultOptions</code>.
* </p>
*
* @param newOptions the new options (key type: <code>String</code>; value type: <code>String</code>),
* or <code>null</code> to reset all options to their default values
* @see JavaCore#getDefaultOptions
*/
public static void setOptions(Hashtable newOptions) {
// see #initializeDefaultPluginPreferences() for changing default settings
Preferences preferences = getPlugin().getPluginPreferences();
if (newOptions == null){
newOptions = JavaCore.getDefaultOptions();
}
Enumeration keys = newOptions.keys();
while (keys.hasMoreElements()){
String key = (String)keys.nextElement();
//if (key.equals(CORE_ENCODING)) continue; // skipped, contributed by resource prefs
String value = (String)newOptions.get(key);
preferences.setValue(key, value);
}
}
/**
* Shutdown the JavaCore plugin
* <p>
* De-registers the JavaModelManager as a resource changed listener and save participant.
* <p>
* @see Plugin#shutdown
*/
public void shutdown() {
IWorkspace workspace = ResourcesPlugin.getWorkspace();
workspace.removeResourceChangeListener(JavaModelManager.getJavaModelManager());
workspace.removeSaveParticipant(this);
((JavaModelManager) JavaModelManager.getJavaModelManager()).shutdown();
}
/**
* Initiate the background indexing process.
* This should be deferred after the plugin activation.
*/
private void startIndexing() {
JavaModelManager.getJavaModelManager().getIndexManager().reset();
}
/**
* Startup of the JavaCore plugin
* <p>
* Registers the JavaModelManager as a resource changed listener and save participant.
* Starts the background indexing, and restore saved classpath variable values.
* <p>
* @see Plugin#startup
*/
public void startup() {
JavaModelManager manager = JavaModelManager.getJavaModelManager();
try {
manager.configurePluginDebugOptions();
manager.loadVariables();
IWorkspace workspace = ResourcesPlugin.getWorkspace();
// need to initialize workspace now since a query may be done before indexing starts
manager.getIndexManager().workspace = workspace;
workspace.addResourceChangeListener(
manager,
IResourceChangeEvent.PRE_AUTO_BUILD
| IResourceChangeEvent.POST_CHANGE
| IResourceChangeEvent.PRE_DELETE
| IResourceChangeEvent.PRE_CLOSE);
startIndexing();
workspace.addSaveParticipant(this, manager);
} catch (CoreException e) {
} catch (RuntimeException e) {
manager.shutdown();
throw e;
}
}
/**
* Internal updating of a variable values (null path meaning removal), allowing to change multiple variable values at once.
*/
private static void updateVariableValues(
String[] variableNames,
IPath[] variablePaths,
IProgressMonitor monitor) throws JavaModelException {
if (monitor != null && monitor.isCanceled()) return;
boolean needCycleCheck = false;
int varLength = variableNames.length;
// gather classpath information for updating
HashMap affectedProjects = new HashMap(5);
JavaModelManager manager = JavaModelManager.getJavaModelManager();
IJavaModel model = manager.getJavaModel();
// filter out unmodified variables
int discardCount = 0;
for (int i = 0; i < varLength; i++){
IPath oldPath = (IPath)JavaModelManager.Variables.get(variableNames[i]);
if (oldPath != null && oldPath.equals(variablePaths[i])){
variableNames[i] = null;
discardCount++;
}
}
if (discardCount > 0){
if (discardCount == varLength) return;
int changedLength = varLength - discardCount;
String[] changedVariableNames = new String[changedLength];
IPath[] changedVariablePaths = new IPath[changedLength];
for (int i = 0, index = 0; i < varLength; i++){
if (variableNames[i] != null){
changedVariableNames[index] = variableNames[i];
changedVariablePaths[index] = variablePaths[i];
index++;
}
}
variableNames = changedVariableNames;
variablePaths = changedVariablePaths;
varLength = changedLength;
}
if (monitor != null && monitor.isCanceled()) return;
if (model != null) {
IJavaProject[] projects = model.getJavaProjects();
nextProject : for (int i = 0, projectLength = projects.length; i < projectLength; i++){
IJavaProject project = projects[i];
// check to see if any of the modified variables is present on the classpath
IClasspathEntry[] classpath = project.getRawClasspath();
for (int j = 0, cpLength = classpath.length; j < cpLength; j++){
IClasspathEntry entry = classpath[j];
for (int k = 0; k < varLength; k++){
String variableName = variableNames[k];
if (entry.getEntryKind() == IClasspathEntry.CPE_VARIABLE){
if (entry.getPath().segment(0).equals(variableName)){
affectedProjects.put(project, ((JavaProject)project).getResolvedClasspath(true));
// also check whether it will be necessary to update proj references and cycle markers
if (!needCycleCheck && entry.getPath().segmentCount() == 1){
IPath oldPath = (IPath)JavaModelManager.Variables.get(variableName);
if (oldPath != null && oldPath.segmentCount() == 1) {
needCycleCheck = true;
} else {
IPath newPath = variablePaths[k];
if (newPath != null && newPath.segmentCount() == 1) {
needCycleCheck = true;
}
}
}
continue nextProject;
}
IPath sourcePath, sourceRootPath;
if (((sourcePath = entry.getSourceAttachmentPath()) != null && sourcePath.segment(0).equals(variableName))
|| ((sourceRootPath = entry.getSourceAttachmentRootPath()) != null && sourceRootPath.segment(0).equals(variableName))) {
affectedProjects.put(project, ((JavaProject)project).getResolvedClasspath(true));
continue nextProject;
}
}
}
}
}
}
// update variables
for (int i = 0; i < varLength; i++){
IPath path = variablePaths[i];
if (path == null) {
JavaModelManager.Variables.remove(variableNames[i]);
} else {
// new variable value is assigned
JavaModelManager.Variables.put(variableNames[i], path);
}
}
// update affected project classpaths
int size = affectedProjects.size();
if (!affectedProjects.isEmpty()) {
boolean wasFiring = manager.isFiring();
try {
if (wasFiring)
manager.stopDeltas();
// propagate classpath change
Iterator projectsToUpdate = affectedProjects.keySet().iterator();
while (projectsToUpdate.hasNext()) {
if (monitor != null && monitor.isCanceled()) return;
JavaProject project = (JavaProject) projectsToUpdate.next();
if (!projectsToUpdate.hasNext()) {
// re-enable firing for the last operation
if (wasFiring) {
wasFiring = false;
manager.startDeltas();
}
}
project
.setRawClasspath(
project.getRawClasspath(),
SetClasspathOperation.ReuseOutputLocation,
monitor,
true,
project.getWorkspace().isAutoBuilding(),
// force build if in auto build mode
(IClasspathEntry[]) affectedProjects.get(project),
size == 1 && needCycleCheck); // no individual check if more than 1 project to update
}
if (size > 1 && needCycleCheck){
try {
// use workspace runnable for protecting marker manipulation
// ResourcesPlugin.getWorkspace().run(
// new IWorkspaceRunnable() {
// public void run(IProgressMonitor monitor) throws CoreException {
JavaProject.updateAllCycleMarkers(); // update them all at once
// }
// },
// monitor);
} catch(CoreException e){
throw new JavaModelException(e);
}
}
} finally {
if (wasFiring) {
manager.startDeltas();
// in case of exception traversing, deltas may be fired only in the next #fire() iteration
}
}
}
}
}