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/*******************************************************************************
* Copyright (c) 2007 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
*******************************************************************************/
package org.eclipse.equinox.internal.p2.engine;
import java.util.*;
import org.eclipse.equinox.internal.p2.persistence.XMLParser;
import org.eclipse.equinox.p2.engine.IProfile;
import org.osgi.framework.BundleContext;
import org.xml.sax.Attributes;
/**
* An abstract XML parser class for parsing profiles as written by the ProfileWriter.
*/
public abstract class ProfileParser extends XMLParser implements ProfileXMLConstants {
public ProfileParser(BundleContext context, String bundleId) {
super(context, bundleId);
}
protected class ProfileHandler extends AbstractHandler {
private final String[] required = new String[] {ID_ATTRIBUTE};
private final Map profileHandlers;
private String profileId = null;
private String parentId;
private PropertiesHandler propertiesHandler = null;
public ProfileHandler(AbstractHandler parentHandler, Attributes attributes, Map profileHandlers) {
super(parentHandler, PROFILE_ELEMENT);
profileId = parseRequiredAttributes(attributes, required)[0];
parentId = parseOptionalAttribute(attributes, PARENT_ID_ATTRIBUTE);
this.profileHandlers = profileHandlers;
}
public void startElement(String name, Attributes attributes) {
if (PROPERTIES_ELEMENT.equals(name)) {
if (propertiesHandler == null) {
propertiesHandler = new PropertiesHandler(this, attributes);
} else {
duplicateElement(this, name, attributes);
}
} else {
invalidElement(name, attributes);
}
}
protected void finished() {
if (isValidXML()) {
profileHandlers.put(profileId, this);
}
}
public String getProfileId() {
return profileId;
}
public String getParentId() {
return parentId;
}
public Map getProperties() {
if (propertiesHandler == null)
return null;
return propertiesHandler.getProperties();
}
}
protected class ProfilesHandler extends AbstractHandler {
private Map profileHandlers = null;
private Map profiles;
public ProfilesHandler(AbstractHandler parentHandler, Attributes attributes) {
super(parentHandler, PROFILES_ELEMENT);
String size = parseOptionalAttribute(attributes, COLLECTION_SIZE_ATTRIBUTE);
profileHandlers = (size != null ? new HashMap(new Integer(size).intValue()) : new HashMap(4));
}
public IProfile[] getProfiles() {
if (profileHandlers.isEmpty())
return new IProfile[0];
profiles = new HashMap();
for (Iterator it = profileHandlers.keySet().iterator(); it.hasNext();) {
String profileId = (String) it.next();
addProfile(profileId);
}
return (IProfile[]) profiles.values().toArray(new IProfile[profiles.size()]);
}
private void addProfile(String profileId) {
if (profiles.containsKey(profileId))
return;
ProfileHandler profileHandler = (ProfileHandler) profileHandlers.get(profileId);
Profile parentProfile = null;
String parentId = profileHandler.parentId;
if (parentId != null) {
addProfile(parentId);
parentProfile = (Profile) profiles.get(parentId);
}
IProfile profile = new Profile(profileId, parentProfile, profileHandler.getProperties());
profiles.put(profileId, profile);
}
public void startElement(String name, Attributes attributes) {
if (name.equals(PROFILE_ELEMENT)) {
new ProfileHandler(this, attributes, profileHandlers);
} else {
invalidElement(name, attributes);
}
}
}
}
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