plugins/org.eclipse.jst.j2ee.web/web/org/eclipse/jst/j2ee/internal/web/deployables/WebDeployableArtifactUtil.java - gerrit/jeetools/webtools.javaee - Git at Google

 /*******************************************************************************
  * Copyright (c) 2003, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.jst.j2ee.internal.web.deployables;

 import java.util.Arrays;
 import java.util.Iterator;
 import java.util.List;

 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.runtime.IAdaptable;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.NullProgressMonitor;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.resource.Resource;
 import org.eclipse.jdt.core.IClasspathEntry;
 import org.eclipse.jdt.core.ICompilationUnit;
 import org.eclipse.jdt.core.IJavaElement;
 import org.eclipse.jdt.core.IJavaProject;
 import org.eclipse.jdt.core.IType;
 import org.eclipse.jdt.core.ITypeHierarchy;
 import org.eclipse.jdt.core.JavaCore;
 import org.eclipse.jem.util.emf.workbench.ProjectUtilities;
 import org.eclipse.jst.j2ee.internal.project.J2EEProjectUtilities;
 import org.eclipse.jst.j2ee.internal.web.jfaces.extension.FileURL;
 import org.eclipse.jst.j2ee.internal.web.jfaces.extension.FileURLExtensionReader;
 import org.eclipse.jst.j2ee.web.componentcore.util.WebArtifactEdit;
 import org.eclipse.jst.j2ee.webapplication.JSPType;
 import org.eclipse.jst.j2ee.webapplication.Servlet;
 import org.eclipse.jst.j2ee.webapplication.ServletMapping;
 import org.eclipse.jst.j2ee.webapplication.ServletType;
 import org.eclipse.jst.j2ee.webapplication.WebApp;
 import org.eclipse.jst.j2ee.webapplication.WebType;
 import org.eclipse.wst.common.componentcore.ComponentCore;
 import org.eclipse.wst.common.componentcore.resources.IVirtualComponent;
 import org.eclipse.wst.common.componentcore.resources.IVirtualResource;
 import org.eclipse.wst.common.internal.emfworkbench.WorkbenchResourceHelper;
 import org.eclipse.wst.server.core.IModule;
 import org.eclipse.wst.server.core.IModuleArtifact;
 import org.eclipse.wst.server.core.ServerUtil;
 import org.eclipse.wst.server.core.util.WebResource;

 /**
  * @version 1.0
  * @author
  */
 public class WebDeployableArtifactUtil {

 	private final static String GENERIC_SERVLET_CLASS_TYPE = "javax.servlet.GenericServlet"; //$NON-NLS-1$
 	private final static String CACTUS_SERVLET_CLASS_TYPE = "org.apache.cactus.server.ServletTestRedirector"; //$NON-NLS-1$

 	public WebDeployableArtifactUtil() {
 		super();
 	}

 	public static IModuleArtifact getModuleObject(Object obj) {
 		IResource resource = null;
 		if (obj instanceof IResource)
 			resource = (IResource) obj;
 		if (obj instanceof IModuleArtifact)
 			resource = ((IModuleArtifact) obj).getModule().getProject();
 		else if (obj instanceof IAdaptable)
 			resource = (IResource) ((IAdaptable) obj).getAdapter(IResource.class);
 		else if (obj instanceof EObject) {
 			resource = ProjectUtilities.getProject((EObject) obj);
 			if (obj instanceof Servlet) {
 				Servlet servlet = ((Servlet) obj);
 				Resource servResource = servlet.eResource();
 				IVirtualResource[] resources = null;
 				try {
 					IResource eclipeServResoruce = WorkbenchResourceHelper.getFile(servResource);
 					resources = ComponentCore.createResources(eclipeServResoruce);
 				} catch (Exception e) {
 					e.printStackTrace();
 				}
 				IVirtualComponent component = null;
 				if (resources[0] != null)
 					component = resources[0].getComponent();
 				String mapping = null;
 				java.util.List mappings = ((Servlet) obj).getMappings();
 				if (mappings != null && !mappings.isEmpty()) {
 					ServletMapping map = (ServletMapping) mappings.get(0);
 					mapping = map.getUrlPattern();
 				}
 				if (mapping != null) {
 					return new WebResource(getModule(resource.getProject(), component), new Path(mapping));
 				}
 				WebType webType = ((Servlet) obj).getWebType();
 				if (webType.isJspType()) {
 					resource = ((IProject) resource).getFile(((JSPType) webType).getJspFile()); //$NON-NLS-1$
 				} else if (webType.isServletType()) {
 					return new WebResource(getModule(resource.getProject(), component), new Path("servlet/" + ((ServletType) webType).getClassName())); //$NON-NLS-1$
 				}
 			}
 		}
 		if (resource == null)
 			return null;

 		if (resource instanceof IProject) {
 			IProject project = (IProject) resource;
 			if (hasInterestedComponents(project))
 				return new WebResource(getModule(project, null), project.getProjectRelativePath());
 		}

 		if (!hasInterestedComponents(resource.getProject()))
             return null;
 		if (isCactusJunitTest(resource))
 			return null;

 		IPath resourcePath = resource.getFullPath();
 		IVirtualResource[] resources = ComponentCore.createResources(resource);
 		IVirtualComponent component = null;
 		if (resources.length <= 0 || resources[0] == null )
 			return null;
 		component = resources[0].getComponent();
 		String className = getServletClassName(resource);
 		if (className != null && component != null) {
 			String mapping = getServletMapping(resource, true, className, component.getName());
 			if (mapping != null) {
 				return new WebResource(getModule(resource.getProject(), component), new Path(mapping));
 			}
 			// if there is no servlet mapping, provide direct access to the servlet
 			// through the fully qualified class name
 			return new WebResource(getModule(resource.getProject(), component), new Path("servlet/" + className)); //$NON-NLS-1$

 		}
 		if (className == null) {
 			WebArtifactEdit webEdit = null;
 			try {
 				webEdit = WebArtifactEdit.getWebArtifactEditForRead(component);
 				List servlets = webEdit.getWebApp().getServlets();
 				for (int i=0; i<servlets.size(); i++) {
 					Servlet servlet = (Servlet) servlets.get(i);
 					WebType type = servlet.getWebType();
 					if (type.isJspType()) {
 						JSPType jsp = (JSPType)type;
 						String jspPath = resource.getProjectRelativePath().removeFirstSegments(1).toString();
 						if (jsp.getJspFile().equals(jspPath)) {
 							List mappings = servlet.getMappings();
 							String mapping = null;
 							if (mappings != null && !mappings.isEmpty()) {
 								ServletMapping map = (ServletMapping) mappings.get(0);
 								mapping = map.getUrlPattern();
 								if (mapping != null)
 									return new WebResource(getModule(resource.getProject(), component), new Path(mapping));
 							}
 						}
 					}
 				}
 			} finally {
 				if (webEdit != null)
 					webEdit.dispose();
 			}
 		}
         resourcePath = resources[0].getRuntimePath();

 		// Extension read to get the correct URL for Java Server Faces file if
 		// the jsp is of type jsfaces.
 		FileURL jspURL = FileURLExtensionReader.getInstance().getFilesURL();
 		if (jspURL != null) {
 			IPath correctJSPPath = jspURL.getFileURL(resource, resourcePath);
 			if (correctJSPPath != null && correctJSPPath.toString().length() > 0)
 				return new WebResource(getModule(resource.getProject(), component), correctJSPPath);
 		}
 		// return Web resource type

 		return new WebResource(getModule(resource.getProject(), component), resourcePath);
 	}

 	protected static IModule getModule(IProject project, IVirtualComponent component) {
 		IModule deployable = null;
 		Iterator iterator = Arrays.asList(ServerUtil.getModules(J2EEProjectUtilities.DYNAMIC_WEB)).iterator(); //$NON-NLS-1$
 		String componentName = null;
 		if (component != null)
 			componentName = component.getName();
 		else
 			return getModuleProject(project, iterator);
 		while (iterator.hasNext()) {
 			Object next = iterator.next();
 			if (next instanceof IModule) {
 				deployable = (IModule) next;
 				if (deployable.getName().equals(componentName)) {
 					return deployable;
 				}
 			}
 		}
 		return null;
 	}

 	protected static IModule getModuleProject(IProject project, Iterator iterator) {
 		IModule deployable = null;
 		while (iterator.hasNext()) {
 			Object next = iterator.next();
 			if (next instanceof IModule) {
 				deployable = (IModule) next;
 				if (deployable.getProject().equals(project))
 					return deployable;
 			}
 		}
 		return null;
 	}

 	/**
 	 *
 	 * Very temporary api - TODO - rip this out by 1.0
 	 */
 	private static boolean isCactusJunitTest(IResource resource) {
 		return getClassNameForType(resource, CACTUS_SERVLET_CLASS_TYPE) != null;
 	}


 	private static IType[] getTypes(IJavaElement element) {
 		try {
 			if (element.getElementType() != IJavaElement.COMPILATION_UNIT)
 				return null;

 			return ((ICompilationUnit) element).getAllTypes();
 		} catch (Exception e) {
 			return null;
 		}
 	}

 	public static String getServletClassName(IResource resource) {
 		return getClassNameForType(resource, GENERIC_SERVLET_CLASS_TYPE);
 	}

 	public static String getClassNameForType(IResource resource, String superType) {
 		if (resource == null)
 			return null;

 		try {
 			IProject project = resource.getProject();
 			IPath path = resource.getFullPath();
 			if (!project.hasNature(JavaCore.NATURE_ID) || path == null)
 				return null;

 			IJavaProject javaProject = (IJavaProject) project.getNature(JavaCore.NATURE_ID);
 			if (!javaProject.isOpen())
 				javaProject.open(new NullProgressMonitor());

 			// output location may not be on classpath
 			IPath outputPath = javaProject.getOutputLocation();
 			if (outputPath != null && "class".equals(path.getFileExtension()) && outputPath.isPrefixOf(path)) { //$NON-NLS-1$
 				int count = outputPath.segmentCount();
 				path = path.removeFirstSegments(count);
 			}

 			// remove initial part of classpath
 			IClasspathEntry[] classPathEntry = javaProject.getResolvedClasspath(true);
 			if (classPathEntry != null) {
 				int size = classPathEntry.length;
 				for (int i = 0; i < size; i++) {
 					IPath classPath = classPathEntry[i].getPath();
 					if (classPath.isPrefixOf(path)) {
 						int count = classPath.segmentCount();
 						path = path.removeFirstSegments(count);
 						i += size;
 					}
 				}
 			}

 			// get java element
 			IJavaElement javaElement = javaProject.findElement(path);

 			IType[] types = getTypes(javaElement);
 			if (types != null) {
 				int size2 = types.length;
 				for (int i = 0; i < size2; i++) {
 					if (hasSuperclass(types[i], superType))
 						return types[i].getFullyQualifiedName();
 				}
 			}
 			return null;
 		} catch (Exception e) {
 			return null;
 		}
 	}

 	public static boolean hasSuperclass(IType type, String superClassName) {
 		try {
 			ITypeHierarchy hierarchy = type.newSupertypeHierarchy(null);
 			IType[] superClasses = hierarchy.getAllSuperclasses(type);

 			int size = superClasses.length;
 			for (int i = 0; i < size; i++) {
 				if (superClassName.equals(superClasses[i].getFullyQualifiedName())) //$NON-NLS-1$
 					return true;
 			}
 			return false;
 		} catch (Exception e) {
 			return false;
 		}
 	}

 	public static String getServletMapping(IResource resource, boolean isServlet, String typeName, String componentName) {
 		if (typeName == null || typeName.equals("")) //$NON-NLS-1$
 			return null;

 		IProject project = resource.getProject();
 		WebArtifactEdit edit = null;
 		WebApp webApp = null;
 		try {
 			edit = WebArtifactEdit.getWebArtifactEditForRead(project);
 			edit.getDeploymentDescriptorRoot();
 			webApp = edit.getWebApp();
 			if (webApp == null)
 				return null;
 			Iterator iterator = webApp.getServlets().iterator();
 			while (iterator.hasNext()) {
 				Servlet servlet = (Servlet) iterator.next();
 				boolean valid = false;

 				WebType webType = servlet.getWebType();
 				if (webType.isServletType() && isServlet) {
 					ServletType type = (ServletType) webType;
 					if (typeName.equals(type.getClassName()))
 						valid = true;
 				} else if (webType.isJspType() && !isServlet) {
 					JSPType type = (JSPType) webType;
 					if (typeName.equals(type.getJspFile()))
 						valid = true;
 				}
 				if (valid) {
 					java.util.List mappings = servlet.getMappings();
 					if (mappings != null && !mappings.isEmpty()) {
 						ServletMapping map = (ServletMapping) mappings.get(0);
 						return map.getUrlPattern();
 					}
 				}
 			}
 			return null;
 		} finally {
 			if (edit != null) {
 				edit.dispose();
 			}
 		}
 	}

 	protected static boolean hasInterestedComponents(IProject project) {
 		return J2EEProjectUtilities.isDynamicWebProject(project);
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2003, 2006 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jst.j2ee.internal.web.deployables;

	import java.util.Arrays;
	import java.util.Iterator;
	import java.util.List;

	import org.eclipse.core.resources.IProject;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.runtime.IAdaptable;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.NullProgressMonitor;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.emf.ecore.EObject;
	import org.eclipse.emf.ecore.resource.Resource;
	import org.eclipse.jdt.core.IClasspathEntry;
	import org.eclipse.jdt.core.ICompilationUnit;
	import org.eclipse.jdt.core.IJavaElement;
	import org.eclipse.jdt.core.IJavaProject;
	import org.eclipse.jdt.core.IType;
	import org.eclipse.jdt.core.ITypeHierarchy;
	import org.eclipse.jdt.core.JavaCore;
	import org.eclipse.jem.util.emf.workbench.ProjectUtilities;
	import org.eclipse.jst.j2ee.internal.project.J2EEProjectUtilities;
	import org.eclipse.jst.j2ee.internal.web.jfaces.extension.FileURL;
	import org.eclipse.jst.j2ee.internal.web.jfaces.extension.FileURLExtensionReader;
	import org.eclipse.jst.j2ee.web.componentcore.util.WebArtifactEdit;
	import org.eclipse.jst.j2ee.webapplication.JSPType;
	import org.eclipse.jst.j2ee.webapplication.Servlet;
	import org.eclipse.jst.j2ee.webapplication.ServletMapping;
	import org.eclipse.jst.j2ee.webapplication.ServletType;
	import org.eclipse.jst.j2ee.webapplication.WebApp;
	import org.eclipse.jst.j2ee.webapplication.WebType;
	import org.eclipse.wst.common.componentcore.ComponentCore;
	import org.eclipse.wst.common.componentcore.resources.IVirtualComponent;
	import org.eclipse.wst.common.componentcore.resources.IVirtualResource;
	import org.eclipse.wst.common.internal.emfworkbench.WorkbenchResourceHelper;
	import org.eclipse.wst.server.core.IModule;
	import org.eclipse.wst.server.core.IModuleArtifact;
	import org.eclipse.wst.server.core.ServerUtil;
	import org.eclipse.wst.server.core.util.WebResource;

	/**
	* @version 1.0
	* @author
	*/
	public class WebDeployableArtifactUtil {

	private final static String GENERIC_SERVLET_CLASS_TYPE = "javax.servlet.GenericServlet"; //$NON-NLS-1$
	private final static String CACTUS_SERVLET_CLASS_TYPE = "org.apache.cactus.server.ServletTestRedirector"; //$NON-NLS-1$

	public WebDeployableArtifactUtil() {
	super();
	}

	public static IModuleArtifact getModuleObject(Object obj) {
	IResource resource = null;
	if (obj instanceof IResource)
	resource = (IResource) obj;
	if (obj instanceof IModuleArtifact)
	resource = ((IModuleArtifact) obj).getModule().getProject();
	else if (obj instanceof IAdaptable)
	resource = (IResource) ((IAdaptable) obj).getAdapter(IResource.class);
	else if (obj instanceof EObject) {
	resource = ProjectUtilities.getProject((EObject) obj);
	if (obj instanceof Servlet) {
	Servlet servlet = ((Servlet) obj);
	Resource servResource = servlet.eResource();
	IVirtualResource[] resources = null;
	try {
	IResource eclipeServResoruce = WorkbenchResourceHelper.getFile(servResource);
	resources = ComponentCore.createResources(eclipeServResoruce);
	} catch (Exception e) {
	e.printStackTrace();
	}
	IVirtualComponent component = null;
	if (resources[0] != null)
	component = resources[0].getComponent();
	String mapping = null;
	java.util.List mappings = ((Servlet) obj).getMappings();
	if (mappings != null && !mappings.isEmpty()) {
	ServletMapping map = (ServletMapping) mappings.get(0);
	mapping = map.getUrlPattern();
	}
	if (mapping != null) {
	return new WebResource(getModule(resource.getProject(), component), new Path(mapping));
	}
	WebType webType = ((Servlet) obj).getWebType();
	if (webType.isJspType()) {
	resource = ((IProject) resource).getFile(((JSPType) webType).getJspFile()); //$NON-NLS-1$
	} else if (webType.isServletType()) {
	return new WebResource(getModule(resource.getProject(), component), new Path("servlet/" + ((ServletType) webType).getClassName())); //$NON-NLS-1$
	}
	}
	}
	if (resource == null)
	return null;

	if (resource instanceof IProject) {
	IProject project = (IProject) resource;
	if (hasInterestedComponents(project))
	return new WebResource(getModule(project, null), project.getProjectRelativePath());
	}

	if (!hasInterestedComponents(resource.getProject()))
	return null;
	if (isCactusJunitTest(resource))
	return null;

	IPath resourcePath = resource.getFullPath();
	IVirtualResource[] resources = ComponentCore.createResources(resource);
	IVirtualComponent component = null;
	if (resources.length <= 0 \|\| resources[0] == null )
	return null;
	component = resources[0].getComponent();
	String className = getServletClassName(resource);
	if (className != null && component != null) {
	String mapping = getServletMapping(resource, true, className, component.getName());
	if (mapping != null) {
	return new WebResource(getModule(resource.getProject(), component), new Path(mapping));
	}
	// if there is no servlet mapping, provide direct access to the servlet
	// through the fully qualified class name
	return new WebResource(getModule(resource.getProject(), component), new Path("servlet/" + className)); //$NON-NLS-1$

	}
	if (className == null) {
	WebArtifactEdit webEdit = null;
	try {
	webEdit = WebArtifactEdit.getWebArtifactEditForRead(component);
	List servlets = webEdit.getWebApp().getServlets();
	for (int i=0; i<servlets.size(); i++) {
	Servlet servlet = (Servlet) servlets.get(i);
	WebType type = servlet.getWebType();
	if (type.isJspType()) {
	JSPType jsp = (JSPType)type;
	String jspPath = resource.getProjectRelativePath().removeFirstSegments(1).toString();
	if (jsp.getJspFile().equals(jspPath)) {
	List mappings = servlet.getMappings();
	String mapping = null;
	if (mappings != null && !mappings.isEmpty()) {
	ServletMapping map = (ServletMapping) mappings.get(0);
	mapping = map.getUrlPattern();
	if (mapping != null)
	return new WebResource(getModule(resource.getProject(), component), new Path(mapping));
	}
	}
	}
	}
	} finally {
	if (webEdit != null)
	webEdit.dispose();
	}
	}
	resourcePath = resources[0].getRuntimePath();

	// Extension read to get the correct URL for Java Server Faces file if
	// the jsp is of type jsfaces.
	FileURL jspURL = FileURLExtensionReader.getInstance().getFilesURL();
	if (jspURL != null) {
	IPath correctJSPPath = jspURL.getFileURL(resource, resourcePath);
	if (correctJSPPath != null && correctJSPPath.toString().length() > 0)
	return new WebResource(getModule(resource.getProject(), component), correctJSPPath);
	}
	// return Web resource type

	return new WebResource(getModule(resource.getProject(), component), resourcePath);
	}

	protected static IModule getModule(IProject project, IVirtualComponent component) {
	IModule deployable = null;
	Iterator iterator = Arrays.asList(ServerUtil.getModules(J2EEProjectUtilities.DYNAMIC_WEB)).iterator(); //$NON-NLS-1$
	String componentName = null;
	if (component != null)
	componentName = component.getName();
	else
	return getModuleProject(project, iterator);
	while (iterator.hasNext()) {
	Object next = iterator.next();
	if (next instanceof IModule) {
	deployable = (IModule) next;
	if (deployable.getName().equals(componentName)) {
	return deployable;
	}
	}
	}
	return null;
	}

	protected static IModule getModuleProject(IProject project, Iterator iterator) {
	IModule deployable = null;
	while (iterator.hasNext()) {
	Object next = iterator.next();
	if (next instanceof IModule) {
	deployable = (IModule) next;
	if (deployable.getProject().equals(project))
	return deployable;
	}
	}
	return null;
	}

	/**
	*
	* Very temporary api - TODO - rip this out by 1.0
	*/
	private static boolean isCactusJunitTest(IResource resource) {
	return getClassNameForType(resource, CACTUS_SERVLET_CLASS_TYPE) != null;
	}



	private static IType[] getTypes(IJavaElement element) {
	try {
	if (element.getElementType() != IJavaElement.COMPILATION_UNIT)
	return null;

	return ((ICompilationUnit) element).getAllTypes();
	} catch (Exception e) {
	return null;
	}
	}

	public static String getServletClassName(IResource resource) {
	return getClassNameForType(resource, GENERIC_SERVLET_CLASS_TYPE);
	}

	public static String getClassNameForType(IResource resource, String superType) {
	if (resource == null)
	return null;

	try {
	IProject project = resource.getProject();
	IPath path = resource.getFullPath();
	if (!project.hasNature(JavaCore.NATURE_ID) \|\| path == null)
	return null;

	IJavaProject javaProject = (IJavaProject) project.getNature(JavaCore.NATURE_ID);
	if (!javaProject.isOpen())
	javaProject.open(new NullProgressMonitor());

	// output location may not be on classpath
	IPath outputPath = javaProject.getOutputLocation();
	if (outputPath != null && "class".equals(path.getFileExtension()) && outputPath.isPrefixOf(path)) { //$NON-NLS-1$
	int count = outputPath.segmentCount();
	path = path.removeFirstSegments(count);
	}

	// remove initial part of classpath
	IClasspathEntry[] classPathEntry = javaProject.getResolvedClasspath(true);
	if (classPathEntry != null) {
	int size = classPathEntry.length;
	for (int i = 0; i < size; i++) {
	IPath classPath = classPathEntry[i].getPath();
	if (classPath.isPrefixOf(path)) {
	int count = classPath.segmentCount();
	path = path.removeFirstSegments(count);
	i += size;
	}
	}
	}

	// get java element
	IJavaElement javaElement = javaProject.findElement(path);

	IType[] types = getTypes(javaElement);
	if (types != null) {
	int size2 = types.length;
	for (int i = 0; i < size2; i++) {
	if (hasSuperclass(types[i], superType))
	return types[i].getFullyQualifiedName();
	}
	}
	return null;
	} catch (Exception e) {
	return null;
	}
	}

	public static boolean hasSuperclass(IType type, String superClassName) {
	try {
	ITypeHierarchy hierarchy = type.newSupertypeHierarchy(null);
	IType[] superClasses = hierarchy.getAllSuperclasses(type);

	int size = superClasses.length;
	for (int i = 0; i < size; i++) {
	if (superClassName.equals(superClasses[i].getFullyQualifiedName())) //$NON-NLS-1$
	return true;
	}
	return false;
	} catch (Exception e) {
	return false;
	}
	}

	public static String getServletMapping(IResource resource, boolean isServlet, String typeName, String componentName) {
	if (typeName == null \|\| typeName.equals("")) //$NON-NLS-1$
	return null;

	IProject project = resource.getProject();
	WebArtifactEdit edit = null;
	WebApp webApp = null;
	try {
	edit = WebArtifactEdit.getWebArtifactEditForRead(project);
	edit.getDeploymentDescriptorRoot();
	webApp = edit.getWebApp();
	if (webApp == null)
	return null;
	Iterator iterator = webApp.getServlets().iterator();
	while (iterator.hasNext()) {
	Servlet servlet = (Servlet) iterator.next();
	boolean valid = false;

	WebType webType = servlet.getWebType();
	if (webType.isServletType() && isServlet) {
	ServletType type = (ServletType) webType;
	if (typeName.equals(type.getClassName()))
	valid = true;
	} else if (webType.isJspType() && !isServlet) {
	JSPType type = (JSPType) webType;
	if (typeName.equals(type.getJspFile()))
	valid = true;
	}
	if (valid) {
	java.util.List mappings = servlet.getMappings();
	if (mappings != null && !mappings.isEmpty()) {
	ServletMapping map = (ServletMapping) mappings.get(0);
	return map.getUrlPattern();
	}
	}
	}
	return null;
	} finally {
	if (edit != null) {
	edit.dispose();
	}
	}
	}

	protected static boolean hasInterestedComponents(IProject project) {
	return J2EEProjectUtilities.isDynamicWebProject(project);
	}

	}