Java tutorial
/** * Copyright (c) 2010 Ed Merks 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: * Ed Merks - Initial API and implementation */ package org.eclipse.emf.codegen.ecore.gwt; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Set; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IFolder; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.IResourceVisitor; import org.eclipse.core.resources.IWorkspaceRoot; import org.eclipse.core.resources.IncrementalProjectBuilder; import org.eclipse.core.resources.ResourcesPlugin; 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.emf.codegen.ecore.CodeGenEcorePlugin; import org.eclipse.emf.common.util.BasicMonitor; import org.eclipse.emf.common.util.URI; import org.eclipse.emf.ecore.resource.URIConverter; import org.eclipse.jdt.core.IClasspathContainer; import org.eclipse.jdt.core.IClasspathEntry; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.IPackageFragmentRoot; import org.eclipse.jdt.core.JavaCore; public class GWTBuilder extends IncrementalProjectBuilder { protected static IPath[] CONTAINER_PATHS = new IPath[] { new Path("org.eclipse.pde.core.requiredPlugins"), new Path("com.google.appengine.eclipse.core.GAE_CONTAINER"), new Path("com.google.gwt.eclipse.core.GWT_CONTAINER") }; @SuppressWarnings("rawtypes") @Override protected IProject[] build(int kind, Map args, IProgressMonitor monitor) throws CoreException { Set<IProject> result = new HashSet<IProject>(); final IProject project = getProject(); if (project.exists()) { IWorkspaceRoot root = project.getWorkspace().getRoot(); IJavaProject javaProject = JavaCore.create(project); IClasspathContainer gaeClasspathContainer = JavaCore.getClasspathContainer( new Path("com.google.appengine.eclipse.core.GAE_CONTAINER"), javaProject); if (gaeClasspathContainer != null) { for (IClasspathEntry classpathEntry : gaeClasspathContainer.getClasspathEntries()) { if (classpathEntry.getEntryKind() == IClasspathEntry.CPE_LIBRARY && classpathEntry.getContentKind() == IPackageFragmentRoot.K_BINARY) { IPath path = classpathEntry.getPath(); int segmentCount = path.segmentCount(); if (segmentCount >= 4) { if (path.segment(segmentCount - 2).equals("user") || path.segment(segmentCount - 3).equals("user")) { copy(URI.createFileURI(path.toOSString()), URI.createPlatformResourceURI( project.getName() + "/war/WEB-INF/lib/" + path.lastSegment(), true)); } } } } } IClasspathContainer gwtClasspathContainer = JavaCore .getClasspathContainer(new Path("com.google.gwt.eclipse.core.GWT_CONTAINER"), javaProject); if (gwtClasspathContainer != null) { for (IClasspathEntry classpathEntry : gwtClasspathContainer.getClasspathEntries()) { if (classpathEntry.getEntryKind() == IClasspathEntry.CPE_LIBRARY && classpathEntry.getContentKind() == IPackageFragmentRoot.K_BINARY) { IPath path = classpathEntry.getPath(); int segmentCount = path.segmentCount(); if (segmentCount >= 2) { path = path.removeLastSegments(1).append("gwt-servlet.jar"); URI fileURI = URI.createFileURI(path.toOSString()); if (URIConverter.INSTANCE.exists(fileURI, null)) { copy(fileURI, URI.createPlatformResourceURI( project.getName() + "/war/WEB-INF/lib/" + path.lastSegment(), true)); } } } } } IClasspathContainer pdeClasspathContainer = JavaCore .getClasspathContainer(new Path("org.eclipse.pde.core.requiredPlugins"), javaProject); if (pdeClasspathContainer != null) { for (IClasspathEntry classpathEntry : pdeClasspathContainer.getClasspathEntries()) { if (classpathEntry.getEntryKind() == IClasspathEntry.CPE_PROJECT) { IProject requiredProject = root.getProject(classpathEntry.getPath().segment(0)); IJavaProject requiredJavaProject = JavaCore.create(requiredProject); IPath outputLocation = requiredJavaProject.getOutputLocation(); final int depth = outputLocation.segmentCount(); IFolder folder = root.getFolder(outputLocation); folder.accept(new IResourceVisitor() { public boolean visit(IResource resource) throws CoreException { if (resource.getType() == IResource.FILE) { IPath fullPath = resource.getFullPath(); copy(URI.createPlatformResourceURI(fullPath.toString(), true), URI.createPlatformResourceURI(project.getName() + "/war/WEB-INF/classes/" + fullPath.removeFirstSegments(depth), true)); } return true; } }, IResource.DEPTH_INFINITE, 0); result.add(requiredProject); } else if (classpathEntry.getEntryKind() == IClasspathEntry.CPE_LIBRARY && classpathEntry.getContentKind() == IPackageFragmentRoot.K_BINARY) { IPath path = classpathEntry.getPath(); copy(URI.createFileURI(path.toOSString()), URI.createPlatformResourceURI( project.getName() + "/war/WEB-INF/lib/" + path.lastSegment(), true)); } } } } return result.toArray(new IProject[result.size()]); } protected void copy(URI sourceURI, URI targetURI) { Map<Object, Object> options = new HashMap<Object, Object>(); options.put(URIConverter.OPTION_REQUESTED_ATTRIBUTES, Collections.singleton(URIConverter.ATTRIBUTE_TIME_STAMP)); Long sourceTimeStamp = (Long) URIConverter.INSTANCE.getAttributes(sourceURI, options) .get(URIConverter.ATTRIBUTE_TIME_STAMP); Long targetTimeStamp = (Long) URIConverter.INSTANCE.getAttributes(targetURI, options) .get(URIConverter.ATTRIBUTE_TIME_STAMP); if (targetTimeStamp == null || targetTimeStamp.compareTo(sourceTimeStamp) < 0) { try { OutputStream out = URIConverter.INSTANCE.createOutputStream(targetURI); InputStream in = URIConverter.INSTANCE.createInputStream(sourceURI); byte[] bytes = new byte[4048]; for (int length = in.read(bytes); length > 0; length = in.read(bytes)) { out.write(bytes, 0, length); } in.close(); out.close(); } catch (IOException exception) { CodeGenEcorePlugin.INSTANCE.log(exception); } } try { IFile file = ResourcesPlugin.getWorkspace().getRoot() .getFile(new Path(targetURI.toPlatformString(true))); if (file.exists() && !file.isDerived()) { setDerived(file); } } catch (CoreException exception) { CodeGenEcorePlugin.INSTANCE.log(exception); } } @SuppressWarnings("deprecation") private void setDerived(IFile file) throws CoreException { file.setDerived(false); } @Override protected void clean(final IProgressMonitor monitor) throws CoreException { final IProject project = getProject(); if (project.exists()) { IFolder folder = project.getFolder(new Path("/war/WEB-INF/lib/")); if (folder.exists()) { final List<IFile> filesToDelete = new ArrayList<IFile>(); folder.accept(new IResourceVisitor() { public boolean visit(IResource resource) throws CoreException { if (resource.getType() == IResource.FILE && resource.isDerived()) { filesToDelete.add((IFile) resource); return false; } else { return true; } } }); monitor.beginTask("", filesToDelete.size()); for (IFile file : filesToDelete) { file.delete(true, BasicMonitor.subProgress(monitor, 1)); } } } super.clean(monitor); } }