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/*******************************************************************************
* Copyright (c) 2001, 2004 IBM 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:
* IBM Corporation - initial API and implementation
* Jens Lukowski/Innoopract - initial renaming/restructuring
*
*******************************************************************************/
package org.eclipse.wst.sse.core.internal.modelhandler;
import java.util.Set;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.Platform;
import org.eclipse.wst.sse.core.internal.Logger;
import org.eclipse.wst.sse.core.internal.ltk.modelhandler.EmbeddedTypeHandler;
import org.eclipse.wst.sse.core.internal.util.Assert;
public class EmbeddedTypeRegistryReader {
protected String ATT_CLASS = "class"; //$NON-NLS-1$
protected String EXTENSION_POINT_ID = "embeddedTypeHandler"; //$NON-NLS-1$
protected String PLUGIN_ID = "org.eclipse.wst.sse.core"; //$NON-NLS-1$
protected String TAG_NAME = "embeddedTypeHandler"; //$NON-NLS-1$
EmbeddedTypeRegistryReader() {
super();
}
protected EmbeddedTypeHandler readElement(IConfigurationElement element) {
EmbeddedTypeHandler contentTypeDescription = null;
if (element.getName().equals(TAG_NAME)) {
try {
contentTypeDescription = (EmbeddedTypeHandler) element.createExecutableExtension(ATT_CLASS);
} catch (Exception e) {
Logger.logException(e);
}
}
Assert.isNotNull(contentTypeDescription, "Error reading content type description"); //$NON-NLS-1$
return contentTypeDescription;
}
/**
* We simply require an 'add' method, of what ever it is we are to read
* into
*/
void readRegistry(Set set) {
IExtensionRegistry extensionRegistry = Platform.getExtensionRegistry();
IExtensionPoint point = extensionRegistry.getExtensionPoint(PLUGIN_ID, EXTENSION_POINT_ID);
if (point != null) {
IConfigurationElement[] elements = point.getConfigurationElements();
for (int i = 0; i < elements.length; i++) {
EmbeddedTypeHandler embeddedContentType = readElement(elements[i]);
// null can be returned if there's an error reading the
// element
if (embeddedContentType != null) {
set.add(embeddedContentType);
}
}
}
}
}
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