Java tutorial
/******************************************************************************* * Copyright (c) 2010, 2013 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.pde.api.tools.internal; import org.eclipse.pde.api.tools.internal.builder.BuildState; import org.eclipse.pde.api.tools.internal.model.ApiBaseline; import org.eclipse.pde.api.tools.internal.provisional.ApiPlugin; import org.eclipse.pde.api.tools.internal.util.Util; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.Path; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.IResourceChangeEvent; import org.eclipse.core.resources.IResourceChangeListener; import org.eclipse.core.resources.IResourceDelta; import org.eclipse.jdt.core.ElementChangedEvent; import org.eclipse.jdt.core.IElementChangedListener; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IJavaElementDelta; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.IPackageFragment; import org.eclipse.jdt.core.IPackageFragmentRoot; import org.eclipse.jdt.core.JavaCore; /** * Standard delta processor for us to track element state changes in the workspace * using {@link IJavaElementDelta}s and {@link IResourceDelta}s. * * @since 1.1 */ public class WorkspaceDeltaProcessor implements IElementChangedListener, IResourceChangeListener { ApiBaselineManager bmanager = ApiBaselineManager.getManager(); ApiDescriptionManager dmanager = ApiDescriptionManager.getManager(); /* * (non-Javadoc) * @see * org.eclipse.jdt.core.IElementChangedListener#elementChanged(org.eclipse * .jdt.core.ElementChangedEvent) */ @Override public void elementChanged(ElementChangedEvent event) { processJavaElementDeltas(event.getDelta().getAffectedChildren(), null); } /** * Processes the java element deltas of interest * * @param deltas */ void processJavaElementDeltas(IJavaElementDelta[] deltas, IJavaProject project) { for (int i = 0; i < deltas.length; i++) { IJavaElementDelta delta = deltas[i]; switch (delta.getElement().getElementType()) { case IJavaElement.JAVA_PROJECT: { IJavaProject proj = (IJavaProject) delta.getElement(); int flags = delta.getFlags(); switch (delta.getKind()) { case IJavaElementDelta.CHANGED: { if (!Util.isApiProject(proj)) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out.println( "--> skipped processing CHANGED delta for project: " + proj.getElementName()); //$NON-NLS-1$ } continue; } if ((flags & IJavaElementDelta.F_OPENED) != 0) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out.println("--> processing OPEN project: [" + proj.getElementName() + "]"); //$NON-NLS-1$ //$NON-NLS-2$ } bmanager.disposeWorkspaceBaseline(); } else if ((flags & IJavaElementDelta.F_RESOLVED_CLASSPATH_CHANGED) != 0 || (flags & IJavaElementDelta.F_CLASSPATH_CHANGED) != 0) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out.println( "--> processing CLASSPATH CHANGE project: [" + proj.getElementName() + "]"); //$NON-NLS-1$ //$NON-NLS-2$ } bmanager.disposeWorkspaceBaseline(); dmanager.projectClasspathChanged(proj); try { BuildState.setLastBuiltState(proj.getProject(), null); } catch (CoreException e) { } dmanager.flushElementCache(delta.getElement()); } else if ((flags & IJavaElementDelta.F_CHILDREN) != 0) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out.println( "--> processing CHILDREN delta of project: [" + proj.getElementName() + "]"); //$NON-NLS-1$ //$NON-NLS-2$ } processJavaElementDeltas(delta.getAffectedChildren(), proj); } else if ((flags & IJavaElementDelta.F_CONTENT) != 0) { if (proj != null) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out.println( "--> processing child CONTENT of project: [" + proj.getElementName() + "]"); //$NON-NLS-1$ //$NON-NLS-2$ } IResourceDelta[] resourcedeltas = delta.getResourceDeltas(); if (resourcedeltas != null) { IResourceDelta rdelta = null; for (int j = 0; j < resourcedeltas.length; j++) { rdelta = resourcedeltas[j].findMember(new Path(Util.MANIFEST_NAME)); if (rdelta != null && rdelta.getKind() == IResourceDelta.CHANGED && (rdelta.getFlags() & IResourceDelta.CONTENT) > 0) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out.println("--> processing manifest delta"); //$NON-NLS-1$ } bmanager.disposeWorkspaceBaseline(); break; } } } } else { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out.println("--> ignoring child CONTENT project context is null"); //$NON-NLS-1$ } } } break; } case IJavaElementDelta.ADDED: { if (!Util.isApiProject(proj)) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out.println( "--> skipped processing ADDED delta for project: " + proj.getElementName()); //$NON-NLS-1$ } continue; } if ((flags & IJavaElementDelta.F_MOVED_FROM) != 0) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out.println("--> processing PROJECT RENAME from: [" //$NON-NLS-1$ + delta.getMovedFromElement().getJavaProject().getElementName() + "] to: [" //$NON-NLS-1$ + proj.getElementName() + "]"); //$NON-NLS-1$ } bmanager.disposeWorkspaceBaseline(); } break; } default: break; } break; } case IJavaElement.PACKAGE_FRAGMENT_ROOT: { IPackageFragmentRoot root = (IPackageFragmentRoot) delta.getElement(); int flags = delta.getFlags(); if ((flags & (IJavaElementDelta.F_ARCHIVE_CONTENT_CHANGED | IJavaElementDelta.F_ADDED_TO_CLASSPATH | IJavaElementDelta.F_REMOVED_FROM_CLASSPATH)) != 0) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out.println("processed CLASSPATH CHANGED for package fragment root: [" //$NON-NLS-1$ + root.getElementName() + "]"); //$NON-NLS-1$ } dmanager.projectClasspathChanged(project); } if ((flags & IJavaElementDelta.F_CHILDREN) != 0) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out.println( "processed CHILDREN for package fragment root: [" + root.getElementName() + "]"); //$NON-NLS-1$ //$NON-NLS-2$ } processJavaElementDeltas(delta.getAffectedChildren(), project); } break; } case IJavaElement.PACKAGE_FRAGMENT: { IPackageFragment fragment = (IPackageFragment) delta.getElement(); if (delta.getKind() == IJavaElementDelta.REMOVED) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out.println("processed REMOVED delta for package fragment: [" //$NON-NLS-1$ + fragment.getElementName() + "]"); //$NON-NLS-1$ } ((ApiBaseline) bmanager.getWorkspaceBaseline()).clearPackage(fragment.getElementName()); } int flags = delta.getFlags(); if ((flags & IJavaElementDelta.F_CHILDREN) != 0) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out.println("processed CHILDREN delta for package fragment: [" //$NON-NLS-1$ + fragment.getElementName() + "]"); //$NON-NLS-1$ } processJavaElementDeltas(delta.getAffectedChildren(), project); } break; } case IJavaElement.COMPILATION_UNIT: { int flags = delta.getFlags(); switch (delta.getKind()) { case IJavaElementDelta.CHANGED: { if ((flags & (IJavaElementDelta.F_CONTENT | IJavaElementDelta.F_FINE_GRAINED | IJavaElementDelta.F_PRIMARY_RESOURCE)) != 0) { if (project != null) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out .println("processed CONTENT / FINE_GRAINED / PRIMARY_RESOURCE delta for: [" //$NON-NLS-1$ + delta.getElement().getElementName() + "]"); //$NON-NLS-1$ } dmanager.projectChanged(project); dmanager.flushElementCache(delta.getElement()); continue; } } break; } case IJavaElementDelta.ADDED: case IJavaElementDelta.REMOVED: { if (project != null) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { if (delta.getKind() == IJavaElementDelta.ADDED) { System.out.println( "processed ADDED delta for: [" + delta.getElement().getElementName() + "]"); //$NON-NLS-1$//$NON-NLS-2$ } else { System.out.println("processed REMOVED delta for: [" //$NON-NLS-1$ + delta.getElement().getElementName() + "]"); //$NON-NLS-1$ } } dmanager.projectChanged(project); dmanager.flushElementCache(delta.getElement()); continue; } break; } default: break; } break; } default: break; } } } /* * (non-Javadoc) * @see * org.eclipse.core.resources.IResourceChangeListener#resourceChanged(org * .eclipse.core.resources.IResourceChangeEvent) */ @Override public void resourceChanged(IResourceChangeEvent event) { IResource resource = event.getResource(); switch (event.getType()) { case IResourceChangeEvent.PRE_BUILD: { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { if (resource == null) { System.out.println("processed PRE_BUILD delta for workspace."); //$NON-NLS-1$ } else { System.out.println("processed PRE_BUILD delta for project: [" + resource.getName() + "]"); //$NON-NLS-1$ //$NON-NLS-2$ } } IResourceDelta delta = event.getDelta(); if (delta != null) { IResourceDelta[] children = delta.getAffectedChildren(IResourceDelta.CHANGED); for (int i = 0; i < children.length; i++) { resource = children[i].getResource(); if (children[i].getResource().getType() == IResource.PROJECT) { IProject project = (IProject) resource; if (Util.isApiProject(project) || Util.isJavaProject(project)) { if ((children[i].getFlags() & IResourceDelta.DESCRIPTION) != 0) { IJavaProject jp = (IJavaProject) JavaCore.create(resource); dmanager.clean(jp, true, true); bmanager.disposeWorkspaceBaseline(); break; } } } } } break; } case IResourceChangeEvent.PRE_CLOSE: case IResourceChangeEvent.PRE_DELETE: { if (resource.getType() == IResource.PROJECT) { IProject project = (IProject) resource; if (Util.isApiProject(project) || Util.isJavaProject(project)) { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { if (event.getType() == IResourceChangeEvent.PRE_CLOSE) { System.out .println("processed PRE_CLOSE delta for project: [" + resource.getName() + "]"); //$NON-NLS-1$ //$NON-NLS-2$ } else { if (ApiPlugin.DEBUG_WORKSPACE_DELTA_PROCESSOR) { System.out.println( "processed PRE_DELETE delta for project: [" + resource.getName() + "]"); //$NON-NLS-1$ //$NON-NLS-2$ } } } bmanager.disposeWorkspaceBaseline(); IJavaProject javaProject = (IJavaProject) JavaCore.create(resource); dmanager.clean(javaProject, false, true); dmanager.flushElementCache(javaProject); } } break; } default: break; } } }