// ---------------------------------------------------------------------------
// jWebSocket - Copyright (c) 2010 jwebsocket.org
// ---------------------------------------------------------------------------
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published by the
// Free Software Foundation; either version 3 of the License, or (at your
// option) any later version.
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
// more details.
// You should have received a copy of the GNU Lesser General Public License along
// with this program; if not, see <http://www.gnu.org/licenses/lgpl.html>.
// ---------------------------------------------------------------------------
package org.jwebsocket.config.xml;
import java.util.List;
import java.util.Map;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javolution.util.FastList;
import javolution.util.FastMap;
import org.jwebsocket.config.Config;
import org.jwebsocket.config.ConfigHandler;
/**
* Config handler for reading plugins configuration
* @author puran
* @version $Id: FilterConfigHandler.java 596 2010-06-22 17:09:54Z fivefeetfurther $
*
*/
public class FilterConfigHandler implements ConfigHandler {
private static final String ELEMENT_FILTER = "filter";
private static final String ID = "id";
private static final String NAME = "name";
private static final String JAR = "jar";
private static final String NAMESPACE = "ns";
private static final String SERVERS = "server-assignments";
private static final String SERVER = "server-assignment";
private static final String SETTINGS = "settings";
private static final String SETTING = "setting";
/**
* {@inheritDoc}
*/
@Override
public Config processConfig(XMLStreamReader aStreamReader)
throws XMLStreamException {
String lId = "", lName = "", lPackageName = "", lJar = "", lNamespace = "";
List<String> lServers = new FastList<String>();
Map<String, String> lSettings = null;
while (aStreamReader.hasNext()) {
aStreamReader.next();
if (aStreamReader.isStartElement()) {
String elementName = aStreamReader.getLocalName();
if (elementName.equals(ID)) {
aStreamReader.next();
lId = aStreamReader.getText();
} else if (elementName.equals(NAME)) {
aStreamReader.next();
lName = aStreamReader.getText();
} else if (elementName.equals(JAR)) {
aStreamReader.next();
lJar = aStreamReader.getText();
} else if (elementName.equals(NAMESPACE)) {
aStreamReader.next();
lNamespace = aStreamReader.getText();
} else if (elementName.equals(SETTINGS)) {
lSettings = getSettings(aStreamReader);
} else if (elementName.equals(SERVERS)) {
lServers = getServers(aStreamReader);
} else {
// ignore
}
}
if (aStreamReader.isEndElement()) {
String elementName = aStreamReader.getLocalName();
if (elementName.equals(ELEMENT_FILTER)) {
break;
}
}
}
return new FilterConfig(lId, lName, lPackageName, lJar, lNamespace, lServers, lSettings);
}
/**
* private method that reads the list of servers from the plugin configuration
* @param aStreamReader the stream reader object
* @return the list of right ids
* @throws XMLStreamException if exception while reading
*/
private List<String> getServers(XMLStreamReader aStreamReader)
throws XMLStreamException {
List<String> lServers = new FastList<String>();
while (aStreamReader.hasNext()) {
aStreamReader.next();
if (aStreamReader.isStartElement()) {
String lElementName = aStreamReader.getLocalName();
if (lElementName.equals(SERVER)) {
aStreamReader.next();
String server = aStreamReader.getText();
lServers.add(server);
}
}
if (aStreamReader.isEndElement()) {
String lElementName = aStreamReader.getLocalName();
if (lElementName.equals(SERVERS)) {
break;
}
}
}
return lServers;
}
/**
* Read the map of settings
*
* @param streamReader
* the stream reader object
* @return the list of domains for the engine
* @throws XMLStreamException
* in case of stream exception
*/
private Map<String, String> getSettings(XMLStreamReader aStreamReader)
throws XMLStreamException {
Map<String, String> lSettings = new FastMap<String, String>();
while (aStreamReader.hasNext()) {
aStreamReader.next();
if (aStreamReader.isStartElement()) {
String lElementName = aStreamReader.getLocalName();
if (lElementName.equals(SETTING)) {
// TODO: Don't just get first attribute here! Scan for key="xxx"!
String lKey = aStreamReader.getAttributeValue(0);
aStreamReader.next();
String lValue = aStreamReader.getText();
if (lKey != null && lValue != null) {
lSettings.put(lKey, lValue);
}
}
}
if (aStreamReader.isEndElement()) {
String lElementName = aStreamReader.getLocalName();
if (lElementName.equals(SETTINGS)) {
break;
}
}
}
return lSettings;
}
}