|
What this is
Other links
The source code// $Id: ArgoFilePersister.java,v 1.14 2004/09/28 11:12:20 bobtarling 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.FileOutputStream; import java.io.IOException; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.io.Writer; import java.net.URL; import java.util.Hashtable; import javax.xml.parsers.ParserConfigurationException; import org.apache.log4j.Logger; import org.argouml.application.ArgoVersion; import org.argouml.xml.argo.ArgoParser; import org.tigris.gef.ocl.ExpansionException; import org.tigris.gef.ocl.OCLExpander; import org.tigris.gef.ocl.TemplateReader; import org.xml.sax.SAXException; /** * To persist to and from argo (xml file) storage. * * @author Bob Tarling */ public class ArgoFilePersister extends AbstractFilePersister { private static final Logger LOG = Logger.getLogger(ArgoFilePersister.class); private static final String ARGO_TEE = "/org/argouml/xml/dtd/argo2.tee"; /** * The constructor. * */ public ArgoFilePersister() { } /** * @see org.argouml.kernel.AbstractFilePersister#getExtension() */ public String getExtension() { return "argo"; } /** * @see org.argouml.kernel.AbstractFilePersister#getDesc() */ protected String getDesc() { return "Argo project file"; } /** * It is being considered to save out individual * xmi's from individuals diagrams to make * it easier to modularize the output of Argo. * * @param file The file to write. * @param project the project to save * @throws SaveException when anything goes wrong * * @see org.argouml.kernel.ProjectFilePersister#save( * org.argouml.kernel.Project, java.io.File) */ 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(); } Writer writer = null; try { if (file.exists()) { copyFile(tempFile, file); } // frank end project.setFile(file); project.setVersion(ArgoVersion.getVersion()); project.setPersistenceVersion(PERSISTENCE_VERSION); FileOutputStream stream = new FileOutputStream(file); writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter( stream, "UTF-8"))); try { Hashtable templates = TemplateReader.readFile(ARGO_TEE); OCLExpander expander = new OCLExpander(templates); expander.expand(writer, project, "", ""); } catch (ExpansionException e) { throw new SaveException(e); } writer.flush(); stream.close(); String path = file.getParent(); if (LOG.isInfoEnabled()) { LOG.info("Dir ==" + path); } // 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); } } /** * @see org.argouml.kernel.ProjectFilePersister#loadProject(java.net.URL) */ public Project loadProject(URL url) throws OpenException { try { // read the argo // the "true" means that members should be added. ArgoParser.getInstance().readProject(url, true); Project p = ArgoParser.getInstance().getProject(); ArgoParser.getInstance().setProject(null); // clear up project refs p.postLoad(); return p; } catch (IOException e) { LOG.error("IOException", e); throw new OpenException(e); } catch (SAXException e) { LOG.error("SAXException", e); throw new OpenException(e); } catch (ParserConfigurationException e) { LOG.error("ParserConfigurationException", e); throw new OpenException(e); } } } |
... this post is sponsored by my books ... | |
#1 New Release! |
FP Best Seller |
Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.
A percentage of advertising revenue from
pages under the /java/jwarehouse
URI on this website is
paid back to open source projects.