Java tutorial
/******************************************************************************* * Copyright (c) 2010, 2011 SAP AG 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: * Kaloyan Raev (SAP AG) - initial API and implementation *******************************************************************************/ package org.eclipse.libra.facet; import static org.eclipse.libra.facet.OSGiBundleFacetUtils.BUILD_PROPERTIES; import static org.eclipse.libra.facet.OSGiBundleFacetUtils.MANIFEST_BUILDER_ID; import static org.eclipse.libra.facet.OSGiBundleFacetUtils.MANIFEST_URI; import static org.eclipse.libra.facet.OSGiBundleFacetUtils.SCHEMA_BUILDER_ID; import static org.eclipse.libra.facet.OSGiBundleFacetUtils.getBundleProjectDescription; import static org.eclipse.libra.facet.OSGiBundleFacetUtils.hasRequiredPlugins; import static org.eclipse.libra.facet.OSGiBundleFacetUtils.isJavaProject; import static org.eclipse.libra.facet.OSGiBundleFacetUtils.isRequiredPlugins; import org.eclipse.core.resources.ICommand; import org.eclipse.core.resources.IContainer; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IProjectDescription; import org.eclipse.core.resources.IResource; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.Path; import org.eclipse.jdt.core.IClasspathEntry; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.JavaCore; import org.eclipse.pde.core.project.IBundleProjectDescription; import org.eclipse.wst.common.project.facet.core.IDelegate; import org.eclipse.wst.common.project.facet.core.IProjectFacetVersion; public class OSGiBundleFacetUninstallDelegate implements IDelegate { public void execute(IProject project, IProjectFacetVersion fv, Object configObject, IProgressMonitor monitor) throws CoreException { OSGiBundleFacetUninstallConfig config = (OSGiBundleFacetUninstallConfig) configObject; OSGiBundleFacetUninstallStrategy strategy = (config == null) ? OSGiBundleFacetUninstallStrategy.defaultStrategy() : config.getStrategy(); doExecute(project, strategy, monitor); } public void doExecute(IProject project, OSGiBundleFacetUninstallStrategy strategy, IProgressMonitor monitor) throws CoreException { // remove the plugin nature if (strategy == OSGiBundleFacetUninstallStrategy.FACET_AND_PLUGIN_NATURE_BUT_NOT_MANIFEST || strategy == OSGiBundleFacetUninstallStrategy.FACET_AND_PLUGIN_NATURE_AND_MANIFEST) { removePluginNature(project, monitor); removeRequiredBundlesClasspathContainer(project, monitor); deleteBuildProperties(project, monitor); } // remove the MANIFEST.MF if (strategy == OSGiBundleFacetUninstallStrategy.FACET_AND_PLUGIN_NATURE_AND_MANIFEST) { cleanUpManifest(project, monitor); } } private void removePluginNature(IProject project, IProgressMonitor monitor) throws CoreException { IProjectDescription description = project.getDescription(); if (description.hasNature(IBundleProjectDescription.PLUGIN_NATURE)) { String[] natures = description.getNatureIds(); for (int i = 0; i < natures.length; i++) { if (natures[i].equals(IBundleProjectDescription.PLUGIN_NATURE)) { String[] newNatures = new String[natures.length - 1]; System.arraycopy(natures, 0, newNatures, 0, i); System.arraycopy(natures, i + 1, newNatures, i, natures.length - i - 1); description.setNatureIds(newNatures); // workaround - see bug 344720 removeFromBuildSpec(description, MANIFEST_BUILDER_ID); removeFromBuildSpec(description, SCHEMA_BUILDER_ID); // end of workaround project.setDescription(description, IResource.KEEP_HISTORY, monitor); return; } } } } // workaround - see bug 344720 private void removeFromBuildSpec(IProjectDescription description, String builderId) { ICommand[] commands = description.getBuildSpec(); for (int i = 0; i < commands.length; ++i) { if (commands[i].getBuilderName().equals(builderId)) { ICommand[] newCommands = new ICommand[commands.length - 1]; System.arraycopy(commands, 0, newCommands, 0, i); System.arraycopy(commands, i + 1, newCommands, i, commands.length - i - 1); description.setBuildSpec(newCommands); return; } } } private void removeRequiredBundlesClasspathContainer(IProject project, IProgressMonitor monitor) throws CoreException { if (isJavaProject(project)) { IJavaProject javaProject = JavaCore.create(project); IClasspathEntry[] entries = javaProject.getRawClasspath(); if (hasRequiredPlugins(entries)) { for (int i = 0; i < entries.length; i++) { if (isRequiredPlugins(entries[i])) { IClasspathEntry[] newEntries = new IClasspathEntry[entries.length - 1]; System.arraycopy(entries, 0, newEntries, 0, i); System.arraycopy(entries, i + 1, newEntries, i, entries.length - i - 1); javaProject.setRawClasspath(newEntries, monitor); return; } } } } } private void deleteBuildProperties(IProject project, IProgressMonitor monitor) throws CoreException { IResource buildPropertiesFile = findResource(project, BUILD_PROPERTIES); buildPropertiesFile.delete(IResource.KEEP_HISTORY, monitor); } private void cleanUpManifest(IProject project, IProgressMonitor monitor) throws CoreException { IResource manifestFile = findResource(project, MANIFEST_URI); manifestFile.delete(IResource.KEEP_HISTORY, monitor); // delete the META-INF folder if empty IContainer metaInfFolder = manifestFile.getParent(); if (metaInfFolder.members().length == 0) { metaInfFolder.delete(IResource.KEEP_HISTORY, monitor); } } private IResource findResource(IProject project, String memberURI) throws CoreException { IBundleProjectDescription bundleProjectDescription = getBundleProjectDescription(project); IPath bundleRoot = bundleProjectDescription.getBundleRoot(); IPath memberPath = bundleRoot; if (memberPath == null) { memberPath = new Path(""); //$NON-NLS-1$ } memberPath = memberPath.append(memberURI); return project.findMember(memberPath); } }