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/*******************************************************************************
* Copyright (c) 2005 Oracle Corporation.
* 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:
* Gerry Kessler - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.jsf.core.internal.provisional.jsflibraryregistry;
import java.util.Collection;
import java.util.Iterator;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.jst.jsf.core.internal.JSFCorePlugin;
import org.eclipse.jst.jsf.core.internal.Messages;
import org.eclipse.jst.jsf.core.internal.jsflibraryregistry.ArchiveFile;
import org.eclipse.jst.jsf.core.internal.jsflibraryregistry.JSFLibrary;
import org.eclipse.jst.jsf.core.internal.jsflibraryregistry.JSFLibraryRegistryFactory;
import org.eclipse.jst.jsf.core.internal.jsflibraryregistry.JSFVersion;
import org.eclipse.jst.jsf.core.internal.jsflibraryregistry.PluginProvidedJSFLibrary;
import org.eclipse.osgi.util.NLS;
/**
* Helper class used to create JSF Libraries from the
* <code>org.eclipse.jst.jsf.core.jsflibraries</code> extension-point.
* <br>
* <em><b>NOTE: experimental and very likely to change.</b></em>
*
* @author Gerry Kessler - Oracle
*/
public final class PluginProvidedJSFLibraryCreationHelper {
private IConfigurationElement config_element;
/**
* Key of the 'name' attribute of the extension point.
*/
public final static String NAME = "name"; //$NON-NLS-1$
/**
* Key of the 'isImplementation' attribute of the extension point.
*/
public final static String IS_IMPL = "isImplementation"; //$NON-NLS-1$
/**
* Key of the 'maxVersionSupported' attribute of the extension point.
*/
public final static String VERSION = "maxVersionSupported"; //$NON-NLS-1$
/**
* Key of the 'archiveFilesDelegate' attribute of the extension point.
*/
public final static String DELEGATE = "archiveFilesDelegate"; //$NON-NLS-1$
/**
* Creates an instance with the specified IConfigurationElement instance.
*
* @param jsfLibrary IConfigurationElement instance
*/
public PluginProvidedJSFLibraryCreationHelper (IConfigurationElement jsfLibrary){
this.config_element = jsfLibrary;
}
/**
* Creates a new PluginProvidedJSFLibrary from the JSFLibrary extension point.
*
* @return PluginProvidedJSFLibrary instance.
*/
public JSFLibrary create(){
PluginProvidedJSFLibrary newLib = JSFLibraryRegistryFactory.eINSTANCE.createPluginProvidedJSFLibrary();
// newLib.setID(getLibID());
newLib.setPluginID(getPluginID());
newLib.setName(config_element.getAttribute(NAME));
newLib.setImplementation(config_element.getAttribute(IS_IMPL).equals("true") ? true : false); //$NON-NLS-1$
newLib.setJSFVersion(JSFVersion.getJSFVersion(config_element.getAttribute(VERSION)));
try {
addArchives(newLib);
return newLib;
} catch (Exception e) {
JSFCorePlugin.log(
e,
NLS.bind(
Messages.PluginProvidedJSFLibraryCreationHelper_ErrorCreating,
newLib.getName()));
}
return null;
}
/**
* Adds ArchiveFile instances to the specified JSFLibrary instance.
*
* @param newLib JSFLibrary instance
* @throws InvalidArchiveFilesCreationException on attempt to create
* multiple instances at same location.
* @throws CoreException on core failure.
*/
private void addArchives(JSFLibrary newLib) throws InvalidArchiveFilesCreationException, CoreException {
JSFLibraryArchiveFilesDelegate jarCol = null;
ArchiveFile jar = null;
jarCol = (JSFLibraryArchiveFilesDelegate)config_element.createExecutableExtension(DELEGATE);
if (jarCol != null){
jarCol.setConfigurationElement(config_element);
Collection jars = jarCol.getArchiveFiles();
if (jars == null)//TODO: better validation and error handling
return;
Iterator it = jars.iterator();
while (it.hasNext()){
Object aJar = it.next();
if (aJar instanceof ArchiveFile){//for now check to see ArchiveFiles were being returned
jar = (ArchiveFile)aJar;
if (!newLib.containsArchiveFile(jar.getSourceLocation()))
newLib.getArchiveFiles().add(jar);
}
else {
throw new InvalidArchiveFilesCreationException(
NLS.bind(
Messages.PluginProvidedJSFLibraryCreationHelper_ErrorMultipleDefinition,
jar.getSourceLocation(),
config_element.getName()));
}
}
}
}
/**
* Returns the plugin's ID.
*
* @return The plugin's ID
*/
private String getPluginID() {
return config_element.getDeclaringExtension().getContributor().getName();
}
}
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