Java tutorial
/* * Copyright 2010 Red Hat, Inc. and/or its affiliates. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.kie.eclipse.wizard.project; import java.io.IOException; import java.lang.reflect.InvocationTargetException; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import org.eclipse.core.resources.IFolder; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IProjectDescription; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.IResourceStatus; import org.eclipse.core.resources.IncrementalProjectBuilder; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.OperationCanceledException; import org.eclipse.core.runtime.SubProgressMonitor; 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; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jface.dialogs.ErrorDialog; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.ui.actions.WorkspaceModifyOperation; import org.eclipse.ui.wizards.newresource.BasicNewResourceWizard; import org.kie.eclipse.runtime.IRuntime; import org.kie.eclipse.utils.FileUtils; /** * A wizard to create a new Drools project. */ public abstract class AbstractKieProjectWizard extends BasicNewResourceWizard { public static final String START_PAGE = "NewProjectStartPage"; public static final String EMPTY_PROJECT_PAGE = "NewEmptProjectPage"; public static final String SAMPLE_FILES_PROJECT_PAGE = "NewSampleFilesProjectPage"; public static final String ONLINE_EXAMPLE_PROJECT_PAGE = "NewOnlineExampleProjectPage"; public static final String MAIN_PAGE = "NewProjectMainPage"; public static final String RUNTIME_PAGE = "NewProjectRuntimePage"; protected IKieProjectStartWizardPage startPage; protected IKieEmptyProjectWizardPage emptyProjectPage; protected IKieSampleFilesProjectWizardPage sampleFilesProjectPage; protected IKieOnlineExampleProjectWizardPage onlineExampleProjectPage; abstract protected IKieProjectWizardPage createStartPage(String pageId); abstract protected IKieProjectWizardPage createEmptyProjectPage(String pageId); abstract protected IKieProjectWizardPage createSampleFilesProjectPage(String pageId); abstract protected IKieProjectWizardPage createOnlineExampleProjectPage(String pageId); abstract protected void createMavenArtifacts(IJavaProject project, IProgressMonitor monitor); abstract protected void createKJarArtifacts(IJavaProject project, IProgressMonitor monitor); abstract protected void createOutputLocation(IJavaProject project, IProgressMonitor monitor) throws JavaModelException, CoreException; abstract protected void addSourceFolders(IJavaProject project, IProgressMonitor monitor) throws JavaModelException, CoreException; public void addPages() { super.addPages(); startPage = (IKieProjectStartWizardPage) createStartPage(START_PAGE); addPage(startPage); emptyProjectPage = (IKieEmptyProjectWizardPage) createEmptyProjectPage(EMPTY_PROJECT_PAGE); addPage(emptyProjectPage); sampleFilesProjectPage = (IKieSampleFilesProjectWizardPage) createSampleFilesProjectPage( SAMPLE_FILES_PROJECT_PAGE); addPage(sampleFilesProjectPage); onlineExampleProjectPage = (IKieOnlineExampleProjectWizardPage) createOnlineExampleProjectPage( ONLINE_EXAMPLE_PROJECT_PAGE); addPage(onlineExampleProjectPage); setNeedsProgressMonitor(true); } public boolean performFinish() { IProject newProjectHandle = null; for (IProjectDescription pd : startPage.getNewProjectDescriptions()) { newProjectHandle = createNewProject(pd); initializeNewProject(newProjectHandle); } if (newProjectHandle == null) { return false; } selectAndReveal(newProjectHandle); return true; } protected IProject initializeNewProject(final IProject newProjectHandle) { WorkspaceModifyOperation op = new WorkspaceModifyOperation() { protected void execute(IProgressMonitor monitor) throws CoreException { try { startPage.setProgressMonitor(monitor); IJavaProject project = JavaCore.create(newProjectHandle); createRuntimeSettings(project, monitor); createOutputLocation(project, monitor); setClasspath(project, monitor); addBuilders(project, monitor); createInitialContent(project, monitor); newProjectHandle.build(IncrementalProjectBuilder.FULL_BUILD, monitor); } catch (IOException _ex) { ErrorDialog.openError(getShell(), "Problem creating new project", null, null); } } }; try { getContainer().run(true, true, op); } catch (Throwable t) { t.printStackTrace(); } return newProjectHandle; } protected IProject createNewProject(final IProjectDescription description) { addNatures(description); final IProject newProjectHandle = FileUtils.getProjectHandle(description.getName()); // create the new project operation WorkspaceModifyOperation op = new WorkspaceModifyOperation() { protected void execute(IProgressMonitor monitor) throws CoreException { startPage.setProgressMonitor(monitor); createProject(description, newProjectHandle, monitor); } }; // run the new project creation operation try { getContainer().run(true, true, op); } catch (InterruptedException e) { return null; } catch (InvocationTargetException e) { Throwable t = e.getTargetException(); if (t instanceof CoreException) { if (((CoreException) t).getStatus().getCode() == IResourceStatus.CASE_VARIANT_EXISTS) { MessageDialog.openError(getShell(), "NewProject.errorMessage", "NewProject.caseVariantExistsError" + newProjectHandle.getName()); } else { ErrorDialog.openError(getShell(), "NewProject.errorMessage", null, // no special message ((CoreException) t).getStatus()); } } else { e.printStackTrace(); } return null; } return newProjectHandle; } protected void addNatures(IProjectDescription projectDescription) { FileUtils.addJavaNature(projectDescription); FileUtils.addBPMN2Nature(projectDescription); boolean shouldAddMavenNature = false; if (startPage.getInitialProjectContent() == IKieProjectWizardPage.EMPTY_PROJECT) shouldAddMavenNature = emptyProjectPage.shouldCreateMavenProject(); else if (startPage.getInitialProjectContent() == IKieProjectWizardPage.SAMPLE_FILES_PROJECT) shouldAddMavenNature = sampleFilesProjectPage.shouldCreateMavenProject(); if (shouldAddMavenNature) { FileUtils.addMavenNature(projectDescription); } } protected void createProject(IProjectDescription description, IProject projectHandle, IProgressMonitor monitor) throws CoreException, OperationCanceledException { try { monitor.beginTask("", 2000); projectHandle.create(description, new SubProgressMonitor(monitor, 1000)); if (monitor.isCanceled()) { throw new OperationCanceledException(); } projectHandle.open(IResource.BACKGROUND_REFRESH, new SubProgressMonitor(monitor, 1000)); } finally { monitor.done(); } } protected void createRuntimeSettings(IJavaProject javaProject, IProgressMonitor monitor) throws CoreException { IRuntime runtime = startPage.getRuntime(); if (runtime != null) { boolean isDefaultRuntime = false; if (startPage.getInitialProjectContent() == IKieProjectWizardPage.EMPTY_PROJECT) isDefaultRuntime = emptyProjectPage.isDefaultRuntime(); else if (startPage.getInitialProjectContent() == IKieProjectWizardPage.SAMPLE_FILES_PROJECT) isDefaultRuntime = sampleFilesProjectPage.isDefaultRuntime(); if (!isDefaultRuntime) { startPage.getRuntimeManager().setRuntime(runtime, javaProject.getProject(), monitor); } } } protected void createOutputLocation(IJavaProject project, String folderName, IProgressMonitor monitor) throws JavaModelException, CoreException { IFolder folder = FileUtils.createFolder(project, folderName, monitor); IPath path = folder.getFullPath(); project.setOutputLocation(path, null); } protected void addBuilders(IJavaProject project, IProgressMonitor monitor) throws CoreException { FileUtils.addJavaBuilder(project, monitor); FileUtils.addBPMN2Builder(project, monitor); boolean shouldAddMavenBuilder = false; if (startPage.getInitialProjectContent() == IKieProjectWizardPage.EMPTY_PROJECT) shouldAddMavenBuilder = emptyProjectPage.shouldCreateMavenProject(); else if (startPage.getInitialProjectContent() == IKieProjectWizardPage.SAMPLE_FILES_PROJECT) shouldAddMavenBuilder = sampleFilesProjectPage.shouldCreateMavenProject(); if (shouldAddMavenBuilder) { FileUtils.addMavenBuilder(project, monitor); } startPage.getRuntimeManager().addBuilder(project, monitor); } protected void setClasspath(IJavaProject project, IProgressMonitor monitor) throws JavaModelException, CoreException { project.setRawClasspath(new IClasspathEntry[0], monitor); addSourceFolders(project, monitor); FileUtils.addJRELibraries(project, monitor); boolean shouldAddMavenLibrary = false; if (startPage.getInitialProjectContent() == IKieProjectWizardPage.EMPTY_PROJECT) shouldAddMavenLibrary = emptyProjectPage.shouldCreateMavenProject(); else if (startPage.getInitialProjectContent() == IKieProjectWizardPage.SAMPLE_FILES_PROJECT) shouldAddMavenLibrary = sampleFilesProjectPage.shouldCreateMavenProject(); if (shouldAddMavenLibrary) { FileUtils.addMavenLibraries(project, monitor); } } protected void createInitialContent(IJavaProject javaProject, IProgressMonitor monitor) throws CoreException, JavaModelException, IOException { if (startPage.getInitialProjectContent() == IKieProjectWizardPage.ONLINE_EXAMPLE_PROJECT) { onlineExampleProjectPage.downloadOnlineExampleProject(javaProject.getProject(), monitor); // Add these folders to the classpath if they exist, otherwise ignore. FileUtils.addFolderToClasspath(javaProject, "src/main/java", false, monitor); FileUtils.addFolderToClasspath(javaProject, "src/main/resources", false, monitor); FileUtils.addFolderToClasspath(javaProject, "src/test/java", false, monitor); FileUtils.addFolderToClasspath(javaProject, "src/test/resources", false, monitor); FileUtils.addFolderToClasspath(javaProject, "src/main/rules", false, monitor); } else if (startPage.getInitialProjectContent() == IKieProjectWizardPage.EMPTY_PROJECT) { if (emptyProjectPage.shouldCreateKJarProject()) createKJarArtifacts(javaProject, monitor); if (emptyProjectPage.shouldCreateMavenProject()) createMavenArtifacts(javaProject, monitor); } else if (startPage.getInitialProjectContent() == IKieProjectWizardPage.SAMPLE_FILES_PROJECT) { if (sampleFilesProjectPage.shouldCreateKJarProject()) createKJarArtifacts(javaProject, monitor); if (sampleFilesProjectPage.shouldCreateMavenProject()) createMavenArtifacts(javaProject, monitor); } } protected void addSourceFolder(IJavaProject project, List<IClasspathEntry> list, String s, IProgressMonitor monitor) throws CoreException { IFolder folder = project.getProject().getFolder(s); FileUtils.createFolder(folder, monitor); IPackageFragmentRoot ipackagefragmentroot = project.getPackageFragmentRoot(folder); list.add(JavaCore.newSourceEntry(ipackagefragmentroot.getPath())); } @Override public boolean canFinish() { if (startPage.getInitialProjectContent() == IKieProjectWizardPage.EMPTY_PROJECT) return emptyProjectPage.isPageComplete(); if (startPage.getInitialProjectContent() == IKieProjectWizardPage.SAMPLE_FILES_PROJECT) return sampleFilesProjectPage.isPageComplete(); if (startPage.getInitialProjectContent() == IKieProjectWizardPage.ONLINE_EXAMPLE_PROJECT) return this.onlineExampleProjectPage.isPageComplete(); return false; } }