/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This 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 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.resource.statistic.pool;
import java.io.StringWriter;
import java.util.Collection;
import java.util.Iterator;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Source;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.jboss.resource.statistic.JBossStatistics;
import org.jboss.resource.statistic.formatter.StatisticsFormatter;
import org.jboss.resource.statistic.formatter.StatisticsFormatterException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Text;
/**
* A XmlStatisticsFormatter.
*
* @author <a href="weston.price@jboss.com">Weston Price</a>
* @version $Revision: 92075 $
*/
public class JBossXmlSubPoolStatisticFormatter implements StatisticsFormatter
{
public Object formatSubPoolStatistics(Collection subPoolStatistics)
{
final Document doc = createDocument();
final Element root = doc.createElement("subpool-statistics");
doc.appendChild(root);
for(Iterator iter = subPoolStatistics.iterator(); iter.hasNext();){
JBossSubPoolStatistics stat = (JBossSubPoolStatistics)iter.next();
createChildNode(doc, root, stat);
}
return getDocumentAsString(doc);
}
public Object formatSubPoolStatistics(ManagedConnectionPoolStatistics stats)
{
return formatSubPoolStatistics(stats.getSubPools());
}
private void createChildNode(Document doc, Element root, JBossSubPoolStatistics stat){
root.appendChild(createTextNode(doc, "max-connections-in-use", String.valueOf(stat.getMaxConnectionsInUse())));
root.appendChild(createTextNode(doc, "connections-in-use", String.valueOf(stat.getConnectionsInUse())));
root.appendChild(createTextNode(doc, "connections-destroyed", String.valueOf(stat.getConnectionsDestroyed())));
root.appendChild(createTextNode(doc, "available-connections", String.valueOf(stat.getAvailableConnections())));
}
private Element createTextNode(Document doc, String name, String value){
Text node = doc.createTextNode(name);
node.setNodeValue(String.valueOf(value));
Element child = doc.createElement(name);
child.appendChild(node);
return child;
}
private Document createDocument(){
try
{
Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
return doc;
}
catch (ParserConfigurationException e)
{
throw new StatisticsFormatterException(e.getMessage());
}
}
private String getDocumentAsString(Document doc){
try
{
final Source source = new DOMSource(doc);
final StringWriter writer = new StringWriter();
final StreamResult result = new StreamResult(writer);
TransformerFactory.newInstance().newTransformer().transform(source, result);
return writer.toString();
}
catch (TransformerException e)
{
throw new StatisticsFormatterException(e.getMessage());
}
}
public Object formatStatistics(JBossStatistics stats)
{
if(!(stats instanceof ManagedConnectionPoolStatistics)){
throw new IllegalArgumentException("Error: invalid statistics implementaiton for formatter.");
}
final ManagedConnectionPoolStatistics poolStats = (ManagedConnectionPoolStatistics)stats;
return formatSubPoolStatistics(poolStats);
}
}