/*******************************************************************************
* Copyright (c) 2001, 2007 Oracle Corporation and others.
* 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 Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.jsf.common;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.ILog;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.emf.common.EMFPlugin;
import org.eclipse.emf.common.util.ResourceLocator;
import org.eclipse.jst.jsf.context.symbol.source.AbstractContextSymbolFactory;
import org.eclipse.jst.jsf.context.symbol.source.ISymbolSourceProvider;
import org.eclipse.jst.jsf.context.symbol.source.ISymbolSourceProviderFactory;
import org.osgi.framework.Bundle;
/**
* This is the central singleton for the My edit plugin.
* <!-- begin-user-doc -->
* This class is not API.
* <!-- end-user-doc -->
* @generated
*/
public final class JSFCommonPlugin extends EMFPlugin {
/**
* Plugin id
*/
public static final String PLUGIN_ID = "org.eclipse.jst.jsf.common"; //$NON-NLS-1$
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public static final String copyright = "Copyright 2006 Oracle"; //$NON-NLS-1$
private static List<ISymbolSourceProviderFactory> registeredSymbolSourceProviders;
private static Map<String,AbstractContextSymbolFactory> registeredSymbolFactories;
private final static String FACTORY_ATTRIBUTE_NAME = "factory"; //$NON-NLS-1$
private final static String FACTORY_ATTRIBUTE_ID_NAME = "factoryId"; //$NON-NLS-1$
private final static String SYMBOL_SOURCE_ID = "symbolSourceId"; //$NON-NLS-1$
private final static String CONTEXT_SYMBOL_FACTORY = "contextSymbolFactory"; //$NON-NLS-1$
/**
* Keep track of the singleton.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public static final JSFCommonPlugin INSTANCE = new JSFCommonPlugin();
/**
* Keep track of the singleton.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
private static Implementation plugin;
/**
* Create the instance.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public JSFCommonPlugin() {
super
(new ResourceLocator [] {
});
}
/**
* Returns the singleton instance of the Eclipse plugin.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @return the singleton instance.
* @generated
*/
public ResourceLocator getPluginResourceLocator() {
return plugin;
}
/**
* Returns the singleton instance of the Eclipse plugin.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @return the singleton instance.
* @generated
*/
public static Implementation getPlugin() {
return plugin;
}
/**
* @param e
* @param msg
*/
public static void log(final Throwable e, final String msg) {
Implementation plugin2 = getPlugin();
if (plugin2 != null)
{
final ILog log = getPlugin().getLog();
if (log != null)
{
log.log(new Status(IStatus.ERROR, PLUGIN_ID, IStatus.OK, msg, e));
return;
}
}
// if plugin not active, dump to stderr
System.err.print(msg+": "); //$NON-NLS-1$
if (e != null)
{
e.printStackTrace(System.err);
}
}
/**
* Logs using the default ILog implementation provided by getLog().
*
* @param severity Severity (IStatus constant) of log entry
* @param message Human-readable message describing log entry
* @param ex Throwable instance (can be null)
*/
public static void log(int severity, String message, Throwable ex) {
getPlugin().getLog().log(new Status(severity, PLUGIN_ID, IStatus.OK, message, ex));
}
/**
* Logs using the default ILog implementation provided by getLog().
*
* @param severity Severity (IStatus constant) of log entry
* @param message Human-readable message describing log entry
*/
public static void log(int severity, String message) {
log(severity, message, null);
}
/**
* @return all registered symbol source providers
*/
public static ISymbolSourceProvider[] getSymbolSourceProvider()
{
return registeredSymbolSourceProviders.toArray(new ISymbolSourceProvider[0]);
}
/**
* @return all registered symbol source providers
*/
public synchronized static List<ISymbolSourceProviderFactory> getSymbolSourceProviders()
{
if (registeredSymbolSourceProviders == null)
{
registerProviders();
if (registeredSymbolSourceProviders == null)
{
throw new AssertionError("registerProviders failed"); //$NON-NLS-1$
}
}
return Collections.unmodifiableList(registeredSymbolSourceProviders);
}
private static void registerProviders()
{
final IExtensionPoint point = Platform.getExtensionRegistry().getExtensionPoint(plugin.getBundle().getSymbolicName(), Implementation.SYMBOL_SOURCE_EXT_ID);
final IExtension[] extensions = point.getExtensions();
registeredSymbolSourceProviders = new ArrayList<ISymbolSourceProviderFactory>(extensions.length);
for (int i = 0; i < extensions.length; i++)
{
final IExtension extension = extensions[i];
final IConfigurationElement[] elements =
extension.getConfigurationElements();
final String bundleId = extension.getContributor().getName();
for (int j = 0; j < elements.length; j++)
{
final IConfigurationElement element = elements[j];
if (SYMBOL_SOURCE_ID.equals(element.getName())
&& element.getAttribute(FACTORY_ATTRIBUTE_NAME) != null)
{
String factoryClassName = element.getAttribute(FACTORY_ATTRIBUTE_NAME);
final Bundle bundle = Platform.getBundle(bundleId);
if (bundle != null)
{
try
{
Class factoryClass = bundle.loadClass(factoryClassName);
ISymbolSourceProviderFactory factory =
(ISymbolSourceProviderFactory) factoryClass.newInstance();
registeredSymbolSourceProviders.add(factory);
}
catch (Exception e)
{
plugin.log(new Status(IStatus.ERROR, plugin.getBundle().getSymbolicName(), 0, "Error loading symbol provider extension point",e)); //$NON-NLS-1$
}
}
}
}
}
}
/**
* @return the list of registed symbol factories
*/
public synchronized static Map<String, AbstractContextSymbolFactory> getSymbolFactories()
{
if (registeredSymbolFactories == null)
{
registerSymbolFactories();
if (registeredSymbolFactories == null)
{
throw new AssertionError("registerProviders failed"); //$NON-NLS-1$
}
}
return Collections.unmodifiableMap(registeredSymbolFactories);
}
private static void registerSymbolFactories()
{
final IExtensionPoint point = Platform.getExtensionRegistry().getExtensionPoint(plugin.getBundle().getSymbolicName(), Implementation.SYMBOL_FACTORY_EXT_ID);
final IExtension[] extensions = point.getExtensions();
registeredSymbolFactories = new HashMap<String, AbstractContextSymbolFactory>(extensions.length);
for (int i = 0; i < extensions.length; i++)
{
final IExtension extension = extensions[i];
final IConfigurationElement[] elements =
extension.getConfigurationElements();
final String bundleId = extension.getContributor().getName();
for (int j = 0; j < elements.length; j++)
{
final IConfigurationElement element = elements[j];
if (CONTEXT_SYMBOL_FACTORY.equals(element.getName())
&& element.getAttribute(FACTORY_ATTRIBUTE_NAME) != null)
{
final String factoryClassName = element.getAttribute(FACTORY_ATTRIBUTE_NAME);
final String factoryId = element.getAttribute(FACTORY_ATTRIBUTE_ID_NAME);
final Bundle bundle = Platform.getBundle(bundleId);
if (bundle != null)
{
try {
Class factoryClass = bundle.loadClass(factoryClassName);
AbstractContextSymbolFactory factory =
(AbstractContextSymbolFactory) factoryClass.newInstance();
registeredSymbolFactories.put(factoryId, factory);
} catch (InstantiationException e) {
plugin.log(new Status(IStatus.ERROR, plugin.getBundle().getSymbolicName(), 0, "Error loading symbol factory extension point",e)); //$NON-NLS-1$
} catch (IllegalAccessException e) {
plugin.log(new Status(IStatus.ERROR, plugin.getBundle().getSymbolicName(), 0, "Error loading symbol factory extension point",e)); //$NON-NLS-1$
} catch (ClassNotFoundException e) {
plugin.log(new Status(IStatus.ERROR, plugin.getBundle().getSymbolicName(), 0, "Error loading symbol factory extension point",e)); //$NON-NLS-1$
}
}
}
}
}
}
/**
* Logs an exception in this plugin to the error log
*
* @param t
*/
public static void log(Throwable t)
{
ILog log = getPlugin().getLog();
IStatus status = new Status(IStatus.ERROR, getPlugin().getSymbolicName(), 0, "Caught exception", t); //$NON-NLS-1$
log.log(status);
}
/**
* The actual implementation of the Eclipse <b>Plugin</b>.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public static class Implementation extends EclipsePlugin
{
/**
* Name of the symbolSourceProvider ext point
*/
public static final String SYMBOL_SOURCE_EXT_ID = "symbolSourceProvider"; //$NON-NLS-1$
/**
* Local identifier for the symbol factory extension point
*/
public static final String SYMBOL_FACTORY_EXT_ID = "contextSymbolFactory"; //$NON-NLS-1$
/**
* Creates an instance.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public Implementation() {
super();
// Remember the static instance.
//
plugin = this;
}
}
/**
* Utility method returning class from class name using classloader from specified bundle
* @param className
* @param bundleId
* @return Class
*/
public static Class<?> loadClass(String className, String bundleId) {
Class<?> aClass = null;
try {
if (bundleId != null){
Bundle bundle = Platform.getBundle(bundleId);
if (bundle != null){
aClass = bundle.loadClass(className);
}
}
} catch (ClassNotFoundException e) {
log(e);
}
return aClass;
}
}