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The source code// $Id: XmiFilePersister.java,v 1.8 2004/09/07 18:56:09 mvw Exp $ // Copyright (c) 1996-2004 The Regents of the University of California. All // Rights Reserved. Permission to use, copy, modify, and distribute this // software and its documentation without fee, and without a written // agreement is hereby granted, provided that the above copyright notice // and this paragraph appear in all copies. This software program and // documentation are copyrighted by The Regents of the University of // California. The software program and documentation are supplied "AS // IS", without any accompanying services from The Regents. The Regents // does not warrant that the operation of the program will be // uninterrupted or error-free. The end-user understands that the program // was developed for research purposes and is advised not to rely // exclusively on the program for any reason. IN NO EVENT SHALL THE // UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, // SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, // ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF // THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF // SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE // PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF // CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, // UPDATES, ENHANCEMENTS, OR MODIFICATIONS. package org.argouml.kernel; import java.io.BufferedWriter; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.net.URL; import org.apache.log4j.Logger; import org.argouml.cognitive.ProjectMemberTodoList; import org.argouml.model.uml.UmlHelper; import org.argouml.xml.xmi.XMIParser; /** * To persist to and from XMI file storage. * * @author Bob Tarling */ public class XmiFilePersister extends AbstractFilePersister { private static final Logger LOG = Logger.getLogger(XmiFilePersister.class); /** * The constructor. */ public XmiFilePersister() { } /** * @see org.argouml.kernel.AbstractFilePersister#getExtension() */ public String getExtension() { return "xmi"; } /** * @see org.argouml.kernel.AbstractFilePersister#getDesc() */ protected String getDesc() { return "XML Metadata Interchange"; } /** * Save a project to a file in XMI format. * * @param project the project to save. * @param file The file to write. * @throws SaveException if anything goes wrong. */ public void doSave(Project project, File file) throws SaveException { // frank: first backup the existing file to name+"#" File tempFile = new File( file.getAbsolutePath() + "#"); File backupFile = new File( file.getAbsolutePath() + "~"); if (tempFile.exists()) { tempFile.delete(); } BufferedWriter writer = null; try { if (file.exists()) { copyFile(tempFile, file); } // frank end project.setFile(file); writer = new BufferedWriter(new FileWriter(file)); int size = project.getMembers().size(); for (int i = 0; i < size; i++) { ProjectMember projectMember = (ProjectMember) project.getMembers().elementAt(i); if (projectMember.getType().equalsIgnoreCase("xmi")) { if (LOG.isInfoEnabled()) { LOG.info("Saving member of type: " + ((ProjectMember) project.getMembers() .elementAt(i)).getType()); } projectMember.save(writer, null); } } // if save did not raise an exception // and name+"#" exists move name+"#" to name+"~" // this is the correct backup file if (backupFile.exists()) { backupFile.delete(); } if (tempFile.exists() && !backupFile.exists()) { tempFile.renameTo(backupFile); } if (tempFile.exists()) { tempFile.delete(); } } catch (Exception e) { LOG.error("Exception occured during save attempt", e); try { writer.close(); } catch (IOException ex) { } // frank: in case of exception // delete name and mv name+"#" back to name if name+"#" exists // this is the "rollback" to old file file.delete(); tempFile.renameTo( file); // we have to give a message to user and set the system to unsaved! throw new SaveException(e); } try { writer.close(); } catch (IOException ex) { LOG.error("Failed to close save output writer", ex); } } /** * This method creates a project from the specified URL * * Unlike the constructor which forces an .argo extension This * method will attempt to load a raw XMI file * * This method can fail in several different ways. Either by * throwing an exception or by having the * ArgoParser.SINGLETON.getLastLoadStatus() set to not true. * * @param url The URL to load the project from. * @return The newly loaded project. * @throws OpenException if the file can not be opened * * @see org.argouml.kernel.ProjectFilePersister#loadProject(java.net.URL) */ public Project loadProject(URL url) throws OpenException { try { Project p = new Project(); XMIParser.getSingleton().readModels(p, url); Object model = XMIParser.getSingleton().getCurModel(); UmlHelper.getHelper().addListenersToModel(model); p.setUUIDRefs(XMIParser.getSingleton().getUUIDRefs()); p.addMember(new ProjectMemberTodoList("", p)); p.addMember(model); p.setNeedsSave(false); return p; } catch (IOException e) { throw new OpenException(e); } } } |
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