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/*******************************************************************************
* Copyright (c) 2012 Oracle. 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:
* Oracle - initial API and implementation
*******************************************************************************/
package org.eclipse.jpt.jpa.eclipselink.ui.internal.commands;
import java.io.File;
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jpt.common.core.internal.utility.PlatformTools;
import org.eclipse.jpt.common.core.resource.xml.JptXmlResource;
import org.eclipse.jpt.jpa.core.JpaProject;
import org.eclipse.jpt.jpa.eclipselink.core.resource.orm.EclipseLink;
import org.eclipse.jpt.jpa.eclipselink.core.resource.orm.XmlEntityMappings;
import org.eclipse.jpt.jpa.eclipselink.ui.internal.plugin.JptJpaEclipseLinkUiPlugin;
import org.eclipse.ui.handlers.HandlerUtil;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
/**
* Handler used to upgrade an orm.xml file to an eclipselink orm.xml file
* when the selected object adapts to a <code>JptXmlResource</code>.
* See org.eclipse.jpt.jpa.eclipselink.ui/plugin.xml
*/
public class UpgradeToEclipseLinkMappingFileXmlResourceHandler
extends AbstractHandler
{
public Object execute(ExecutionEvent event) throws ExecutionException {
IStructuredSelection selection = (IStructuredSelection) HandlerUtil.getCurrentSelectionChecked(event);
for (Object selectedObject : selection.toArray()) {
this.upgradeToEclipseLinkMappingFile(selectedObject);
}
return null;
}
protected void upgradeToEclipseLinkMappingFile(Object selectedObject) {
upgradeToEclipseLinkMappingFile(this.adaptSelection(selectedObject));
}
protected JptXmlResource adaptSelection(Object selectedObject) {
return PlatformTools.getAdapter(selectedObject, JptXmlResource.class);
}
protected static void upgradeToEclipseLinkMappingFile(JptXmlResource xmlResource) {
JpaProject jpaProject = getJpaProject(xmlResource.getFile().getProject());
String fileLocation = xmlResource.getFile().getRawLocation().toOSString();
String newVersion = jpaProject.getJpaPlatform().getMostRecentSupportedResourceType(XmlEntityMappings.CONTENT_TYPE).getVersion();
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(new File(fileLocation));
document.setXmlStandalone(true);
NodeList nodes = document.getElementsByTagName("entity-mappings"); //$NON-NLS-1$
if (nodes.getLength() > 0) {
// we know only one "entity-mappings" element exists in the mapping file
Node node = nodes.item(0);
NamedNodeMap attributes = node.getAttributes();
attributes.getNamedItem("version").setTextContent(newVersion); //$NON-NLS-1$
attributes.getNamedItem("xmlns").setTextContent(getNamespace()); //$NON-NLS-1$
attributes.getNamedItem("xsi:schemaLocation").setTextContent(buildSchemaLocationString(getNamespace(), getSchemaLocationForVersion(newVersion))); //$NON-NLS-1$
}
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes"); //$NON-NLS-1$
transformer.transform(new DOMSource(document), new StreamResult(new File(fileLocation)));
// refresh the file to load the changes to the editor
xmlResource.getFile().refreshLocal(IResource.DEPTH_ZERO, null);
} catch (ParserConfigurationException pce) {
JptJpaEclipseLinkUiPlugin.instance().logError(pce);
} catch (SAXException sxe) {
JptJpaEclipseLinkUiPlugin.instance().logError(sxe);
} catch (IOException ioe) {
JptJpaEclipseLinkUiPlugin.instance().logError(ioe);
} catch (TransformerConfigurationException tce) {
JptJpaEclipseLinkUiPlugin.instance().logError(tce);
} catch (TransformerException te) {
JptJpaEclipseLinkUiPlugin.instance().logError(te);
} catch (CoreException ce) {
JptJpaEclipseLinkUiPlugin.instance().logError(ce);
}
}
private static JpaProject getJpaProject(IProject project) {
return (JpaProject) project.getAdapter(JpaProject.class);
}
protected static String buildSchemaLocationString(String namespace, String schemaLocation) {
return namespace + ' ' + schemaLocation;
}
protected static String getNamespace() {
return EclipseLink.SCHEMA_NAMESPACE;
}
protected static String getSchemaLocationForVersion(String schemaVersion) {
String schemaLocation = XmlEntityMappings.SCHEMA_LOCATIONS.get(schemaVersion);
if (schemaLocation == null) {
JptJpaEclipseLinkUiPlugin.instance().logError(new Throwable("No schema location defined for version: " + schemaVersion)); //$NON-NLS-1$
}
return schemaLocation;
}
}
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