Java tutorial
/******************************************************************************* * Copyright 2017 Capital One Services, LLC and Bitwise, Inc. * 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 hydrograph.ui.graph.editor; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.regex.Pattern; import org.apache.commons.lang.StringUtils; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IResource; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.OperationCanceledException; import org.eclipse.ltk.core.refactoring.Change; import org.eclipse.ltk.core.refactoring.CompositeChange; import org.eclipse.ltk.core.refactoring.RefactoringStatus; import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext; import org.eclipse.ltk.core.refactoring.participants.RenameParticipant; import org.eclipse.ltk.core.refactoring.resource.RenameResourceChange; import hydrograph.ui.common.util.Constants; import hydrograph.ui.graph.Messages; import hydrograph.ui.graph.utility.ResourceChangeUtil; import hydrograph.ui.project.structure.CustomMessages; /**The Class Rename Job Participant * @author Bitwise * */ public class RenameJobParticipant extends RenameParticipant { private static final String DEBUG = "_debug"; private IFile modifiedResource; @Override protected boolean initialize(Object element) { this.modifiedResource = (IFile) element; if (modifiedResource.getParent() != null && modifiedResource.getParent().getParent() instanceof IProject) { if (StringUtils.equalsIgnoreCase(Messages.PROPERTIES_EXT, modifiedResource.getFileExtension())) { if (!StringUtils.equalsIgnoreCase(modifiedResource.getParent().getName(), Messages.PARAM)) { return false; } } } return true; } @Override public String getName() { return "Job File Renaming Participant"; } @Override public RefactoringStatus checkConditions(IProgressMonitor pm, CheckConditionsContext context) throws OperationCanceledException { String newName = getArguments().getNewName(); String newExt = newName.substring(newName.lastIndexOf(".") + 1); if ("job".equals(modifiedResource.getFileExtension())) { if (!("job".equals(newExt))) { return RefactoringStatus.createFatalErrorStatus("Changing extension of job file is not allowed"); } } else if ("job".equals(newExt)) { return RefactoringStatus.createFatalErrorStatus( "Changing extension to .job not allowed." + "Please create a new job file."); } else if (CustomMessages.ProjectSupport_JOBS.equals(modifiedResource.getFullPath().segment(1)) && !newExt.matches("job|xml")) { return RefactoringStatus .createFatalErrorStatus("Only .job and .xml files can be stored in this folder"); } else if (modifiedResource.getFileExtension().matches("xml|properties") || (newExt.matches("xml|properties"))) { if (ResourceChangeUtil.isGeneratedFile(modifiedResource.getName(), modifiedResource.getProject())) { return RefactoringStatus.createFatalErrorStatus(".xml or .properties file cannot be renamed. " + "Rename the .job file to rename the xml and properties file"); } else if (ResourceChangeUtil.isGeneratedFile(newName, modifiedResource.getProject())) { return RefactoringStatus.createFatalErrorStatus( "Generated file with same name exists.Please choose a different name"); } else if (("properties".equals(modifiedResource.getFileExtension()) || "properties".equals(newExt)) && !modifiedResource.getFullPath().segment(1).equals(CustomMessages.ProjectSupport_PARAM)) { return RefactoringStatus .createFatalErrorStatus("properties file can only be saved in param folder."); } } return new RefactoringStatus(); } @Override public Change createChange(IProgressMonitor pm) throws CoreException, OperationCanceledException { final HashMap<IFile, RenameResourceChange> changes = new HashMap<IFile, RenameResourceChange>(); final String newName = ResourceChangeUtil.removeExtension(getArguments().getNewName()); if (modifiedResource.getParent() != null) { if (!StringUtils.equalsIgnoreCase(modifiedResource.getParent().getName(), CustomMessages.ProjectSupport_JOBS)) { List<IResource> memberList = new ArrayList<IResource>(modifiedResource.getProject() .getFolder(modifiedResource.getParent().getName()).members().length); ResourceChangeUtil.addMembersToList(memberList, modifiedResource.getProject().getFolder(modifiedResource.getParent().getName())); final String fileName = ResourceChangeUtil.removeExtension(modifiedResource.getName()); for (IResource resource : memberList) { if (Pattern.matches(fileName + Constants.EXTENSION, resource.getName())) { if ((StringUtils.equalsIgnoreCase(Messages.XML_EXT, resource.getFileExtension()) || StringUtils.equalsIgnoreCase(Messages.JOB_EXT, resource.getFileExtension())) && !(StringUtils.equalsIgnoreCase(modifiedResource.getName(), resource.getName()))) { getRenameChanges(changes, newName, resource); } } } } else if (StringUtils.equalsIgnoreCase(modifiedResource.getParent().getName(), CustomMessages.ProjectSupport_JOBS) || StringUtils.equalsIgnoreCase(modifiedResource.getParent().getName(), CustomMessages.ProjectSupport_PARAM)) { List<IResource> memberList = new ArrayList<IResource>(modifiedResource.getProject() .getFolder(CustomMessages.ProjectSupport_PARAM).members().length + modifiedResource.getProject().getFolder(CustomMessages.ProjectSupport_JOBS) .members().length); ResourceChangeUtil.addMembersToList(memberList, modifiedResource.getProject().getFolder(CustomMessages.ProjectSupport_JOBS)); ResourceChangeUtil.addMembersToList(memberList, modifiedResource.getProject().getFolder(CustomMessages.ProjectSupport_PARAM)); final String fileName = ResourceChangeUtil.removeExtension(modifiedResource.getName()); for (IResource resource : memberList) { if (Pattern.matches(fileName + Constants.EXTENSION, resource.getName())) { if ((StringUtils.equalsIgnoreCase(Messages.XML_EXT, resource.getFileExtension()) || StringUtils.equalsIgnoreCase(Messages.PROPERTIES_EXT, resource.getFileExtension()) || StringUtils.equalsIgnoreCase(Messages.JOB_EXT, resource.getFileExtension())) && !(StringUtils.equalsIgnoreCase(modifiedResource.getName(), resource.getName()))) { getRenameChanges(changes, newName, resource); } ; } } } } if (changes.isEmpty()) { return null; } CompositeChange result = new CompositeChange("Rename Job Related Files"); for (Iterator<RenameResourceChange> iter = changes.values().iterator(); iter.hasNext();) { result.add((Change) iter.next()); } return result; } private void getRenameChanges(final HashMap<IFile, RenameResourceChange> changes, String newName, IResource resource) { RenameResourceChange change = (RenameResourceChange) changes.get((IFile) resource); if (change == null) { String fileName = ResourceChangeUtil.removeExtension(resource.getName()); if (fileName.endsWith(DEBUG)) { newName = newName.concat(DEBUG); } change = new RenameResourceChange(resource.getFullPath(), newName + "." + resource.getFileExtension()); changes.put((IFile) resource, change); } } }