| /******************************************************************************* |
| * Copyright (c) 2003, 2005 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.wst.common.componentcore.internal.impl; |
| |
| import java.util.Collections; |
| import java.util.LinkedHashMap; |
| import java.util.LinkedHashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.eclipse.core.resources.IContainer; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.wst.common.componentcore.internal.ComponentResource; |
| import org.eclipse.wst.common.componentcore.internal.ComponentcorePackage; |
| import org.eclipse.wst.common.componentcore.internal.StructureEdit; |
| import org.eclipse.wst.common.componentcore.internal.WorkbenchComponent; |
| import org.eclipse.wst.common.componentcore.internal.util.IPathProvider; |
| |
| /** |
| * <p> |
| * The following class is experimental until fully documented. |
| * </p> |
| */ |
| public class ResourceTreeNode { |
| |
| public static final int CREATE_NONE = 0x0; |
| /** |
| * Type constant (bit mask value 1) which identifies creating child nodes. |
| * |
| */ |
| public static final int CREATE_TREENODE_IFNEC = 0x1; |
| |
| /** |
| * Type constant (bit mask value 2) which identifies always creating a virtual resource. |
| * |
| */ |
| public static final int CREATE_RESOURCE_ALWAYS = 0x2; |
| |
| private final Set moduleResources = Collections.synchronizedSet(new LinkedHashSet()); |
| private final Map children = Collections.synchronizedMap(new LinkedHashMap()); |
| private final Map transientChildResources = Collections.synchronizedMap(new LinkedHashMap()); |
| private static final ComponentResource[] NO_MODULE_RESOURCES = new ComponentResource[]{}; |
| private IPathProvider pathProvider; |
| // private ResourceTreeNode parent; |
| private String pathSegment; |
| |
| public ResourceTreeNode(String aPathSegment, ResourceTreeNode parent, IPathProvider aPathProvider) { |
| pathSegment = aPathSegment; |
| pathProvider = aPathProvider; |
| } |
| |
| public ResourceTreeNode addChild(ResourceTreeNode aChild) { |
| children.put(aChild.getPathSegment(), aChild); |
| return aChild; |
| } |
| |
| public ResourceTreeNode addChild(ComponentResource aModuleResource) { |
| ResourceTreeNode newChild = findChild(getPathProvider().getPath(aModuleResource), CREATE_TREENODE_IFNEC); |
| if(newChild != null) { |
| newChild.addModuleResource(aModuleResource); |
| return newChild; |
| } |
| return null; |
| } |
| |
| public ResourceTreeNode removeChild(ResourceTreeNode aChild) { |
| return (ResourceTreeNode) children.remove(aChild.getPathSegment()); |
| } |
| |
| public ResourceTreeNode removeChild(ComponentResource aModuleResource) { |
| ResourceTreeNode containingChild = findChild(getPathProvider().getPath(aModuleResource), CREATE_NONE); |
| if(containingChild != null) { |
| containingChild.removeResource(aModuleResource); |
| if(containingChild.hasModuleResources()) |
| return containingChild; |
| return removeChild(containingChild); |
| } |
| return null; |
| } |
| |
| public ResourceTreeNode removeChild(IPath targetPath, ComponentResource aModuleResource) { |
| ResourceTreeNode containingChild = findChild(targetPath, CREATE_NONE); |
| if(containingChild != null) { |
| containingChild.removeResource(aModuleResource); |
| if(containingChild.hasModuleResources()) |
| return containingChild; |
| return removeChild(containingChild); |
| } |
| return null; |
| } |
| |
| public void removeResource(ComponentResource aResource) { |
| moduleResources.remove(aResource); |
| } |
| |
| public ResourceTreeNode findChild(IPath aPath) { |
| return findChild(aPath, CREATE_TREENODE_IFNEC); |
| } |
| |
| public ResourceTreeNode findChild(IPath aPath, int creationFlags) { |
| if(aPath == null) |
| return null; |
| ResourceTreeNode child = this; |
| if (aPath.segmentCount() > 0) { |
| child = findChild(aPath.segment(0), creationFlags); |
| if (child == null) |
| return null; |
| if (aPath.segmentCount() == 1) |
| return child; |
| child = child.findChild(aPath.removeFirstSegments(1), creationFlags); |
| |
| } |
| return child; |
| } |
| |
| public ResourceTreeNode findChild(String aPathSegment) { |
| if (aPathSegment == null || aPathSegment.length() == 0) |
| return this; |
| return findChild(aPathSegment, CREATE_NONE); |
| } |
| |
| public ResourceTreeNode findChild(String aPathSegment, int creationFlags) { |
| boolean toCreateChildIfNecessary = (creationFlags & CREATE_TREENODE_IFNEC) == CREATE_TREENODE_IFNEC; |
| ResourceTreeNode childNode = (ResourceTreeNode) children.get(aPathSegment); |
| if (childNode == null && toCreateChildIfNecessary) |
| childNode = addChild(aPathSegment); |
| return childNode; |
| } |
| |
| public ComponentResource[] findModuleResources(IPath aPath, int creationFlags) { |
| |
| Set foundModuleResources = findModuleResourcesSet(aPath, aPath, creationFlags); |
| if (foundModuleResources.size() == 0) |
| return NO_MODULE_RESOURCES; |
| return (ComponentResource[]) foundModuleResources.toArray(new ComponentResource[foundModuleResources.size()]); |
| } |
| public boolean exists(IPath aPath, int creationFlags) { |
| |
| Set foundModuleResources = findModuleResourcesSet(aPath, aPath, creationFlags); |
| if (foundModuleResources.size() == 0) { |
| if (true) { |
| ResourceTreeNode child = findChild(aPath.segment(0), creationFlags); |
| if (child != null) |
| return true; |
| } |
| return false; |
| } |
| return true; |
| } |
| |
| public boolean hasModuleResources() { |
| return moduleResources.size() > 0; |
| } |
| |
| public ComponentResource[] getModuleResources() { |
| return (ComponentResource[]) moduleResources.toArray(new ComponentResource[moduleResources.size()]); |
| } |
| |
| private Set findModuleResourcesSet(IPath aFullPath, IPath aPath, int creationFlags) { |
| |
| if (aPath.segmentCount() == 0) { |
| Set resources = aggregateResources(new LinkedHashSet()); |
| return resources; |
| } |
| ResourceTreeNode child = findChild(aPath.segment(0), creationFlags); |
| if (child == null) |
| return findMatchingVirtualPathsSet(aFullPath, aPath, creationFlags); |
| Set foundResources = new LinkedHashSet(); |
| foundResources.addAll(child.findModuleResourcesSet(aFullPath, aPath.removeFirstSegments(1), creationFlags)); |
| foundResources.addAll(findMatchingVirtualPathsSet(aFullPath, aPath, creationFlags)); |
| return foundResources; |
| } |
| |
| private Set findMatchingVirtualPathsSet(IPath aFullPath, IPath aPath, int creationFlags) { |
| boolean toCreateResourceAlways = (creationFlags & CREATE_RESOURCE_ALWAYS) == CREATE_RESOURCE_ALWAYS; |
| if (hasModuleResources()) { |
| ComponentResource moduleResource = null; |
| IResource eclipseResource = null; |
| IContainer eclipseContainer = null; |
| Set resultSet = new LinkedHashSet(); |
| for (Iterator resourceIter = moduleResources.iterator(); resourceIter.hasNext();) { |
| moduleResource = (ComponentResource) resourceIter.next(); |
| if(moduleResource.getRuntimePath() != null && moduleResource.eResource() != null) { |
| eclipseResource = StructureEdit.getEclipseResource(moduleResource); |
| |
| if (eclipseResource != null && (eclipseResource.getType() == IResource.FOLDER || eclipseResource.getType() == IResource.PROJECT)) { |
| eclipseContainer = (IContainer) eclipseResource; |
| |
| IPath runtimeURI = moduleResource.getRuntimePath().append(aPath); |
| IPath srcPath = eclipseContainer.getProjectRelativePath().append(aPath); |
| |
| // check for existing subpath in tree |
| ComponentResource newResource = findExistingComponentResource(moduleResource.getComponent(), runtimeURI, srcPath); |
| |
| // add new resource if null |
| if(newResource == null) { |
| // flesh out the tree |
| IResource eclipseRes = eclipseContainer.findMember(aPath); |
| if ((toCreateResourceAlways) || (eclipseRes != null)) { |
| newResource = (ComponentResource)transientChildResources.get(srcPath); |
| if (newResource == null) { |
| newResource = ComponentcorePackage.eINSTANCE.getComponentcoreFactory().createComponentResource(); |
| // Not setting the parent on this transient child resource |
| // newResource.setComponent(moduleResource.getComponent()); |
| newResource.setRuntimePath(runtimeURI); |
| newResource.setSourcePath(srcPath); |
| if (eclipseRes != null) |
| newResource.setOwningProject(eclipseRes.getProject()); |
| transientChildResources.put(srcPath,newResource); |
| } |
| resultSet.add(newResource); |
| } |
| } |
| } |
| |
| } |
| } |
| return resultSet.size() > 0 ? resultSet : Collections.EMPTY_SET; |
| } |
| return Collections.EMPTY_SET; |
| } |
| |
| private ComponentResource findExistingComponentResource(WorkbenchComponent component, IPath runtimeURI, IPath srcPath) { |
| List resources = component.getResources(); |
| for (Iterator iter = resources.iterator(); iter.hasNext();) { |
| ComponentResource element = (ComponentResource) iter.next(); |
| if(runtimeURI.equals(element.getRuntimePath()) && srcPath.equals(element.getSourcePath())) |
| return element; |
| |
| } |
| return null; |
| } |
| |
| private Set aggregateResources(Set anAggregationSet) { |
| if (hasModuleResources()) |
| anAggregationSet.addAll(moduleResources); |
| ResourceTreeNode childNode = null; |
| for (Iterator childrenIterator = children.values().iterator(); childrenIterator.hasNext();) { |
| childNode = (ResourceTreeNode) childrenIterator.next(); |
| childNode.aggregateResources(anAggregationSet); |
| } |
| return anAggregationSet; |
| } |
| |
| public int childrenCount() { |
| return children.size(); |
| } |
| |
| public String getPathSegment() { |
| return pathSegment; |
| } |
| |
| protected ResourceTreeNode addChild(String aPathSegment) { |
| ResourceTreeNode newChild = null; |
| if ((newChild = (ResourceTreeNode) children.get(aPathSegment)) == null) { |
| newChild = new ResourceTreeNode(aPathSegment, this, pathProvider); |
| children.put(newChild.getPathSegment(), newChild); |
| } |
| return newChild; |
| } |
| |
| protected ResourceTreeNode removeChild(String aPathSegment) { |
| return (ResourceTreeNode) children.remove(aPathSegment); |
| } |
| |
| /* package */void addModuleResource(ComponentResource aModuleResource) { |
| moduleResources.add(aModuleResource); |
| } |
| |
| /* package */IPathProvider getPathProvider() { |
| return pathProvider; |
| } |
| |
| public Map getChildren() { |
| return children; |
| } |
| } |