/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.jbpm.db;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.Query;
import org.hibernate.Session;
import org.jbpm.JbpmException;
import org.jbpm.graph.exe.ProcessInstance;
import org.jbpm.graph.exe.Token;
import org.jbpm.logging.log.ProcessLog;
public class LoggingSession {
JbpmSession jbpmSession;
Session session;
public LoggingSession(JbpmSession jbpmSession) {
this.jbpmSession = jbpmSession;
this.session = jbpmSession.getSession();
}
public LoggingSession(Session session) {
this.session = session;
this.jbpmSession = new JbpmSession(session);
}
/**
* returns a map that maps {@link Token}s to {@link List}s. The lists contain the ordered
* logs for the given token. The lists are retrieved with {@link #findLogsByToken(long)}.
*/
public Map findLogsByProcessInstance(long processInstanceId) {
Map tokenLogs = new HashMap();
try {
ProcessInstance processInstance = (ProcessInstance) session.load(ProcessInstance.class, new Long(processInstanceId));
collectTokenLogs(tokenLogs, processInstance.getRootToken());
} catch (Exception e) {
log.error(e);
jbpmSession.handleException();
throw new JbpmException("couldn't get logs for process instance '"+processInstanceId+"'", e);
}
return tokenLogs;
}
private void collectTokenLogs(Map tokenLogs, Token token) {
tokenLogs.put(token, findLogsByToken(token.getId()));
Map children = token.getChildren();
if ( (children!=null)
&& (!children.isEmpty())
) {
Iterator iter = children.values().iterator();
while (iter.hasNext()) {
Token child = (Token) iter.next();
collectTokenLogs(tokenLogs, child);
}
}
}
/**
* collects the logs for a given token, ordered by creation time.
*/
public List findLogsByToken(long tokenId) {
List result = null;
try {
Token token = (Token) session.load(Token.class, new Long(tokenId));
Query query = session.getNamedQuery("LoggingSession.findLogsByToken");
query.setEntity("token", token);
result = query.list();
} catch (Exception e) {
log.error(e);
jbpmSession.handleException();
throw new JbpmException("couldn't get logs for token '"+tokenId+"'", e);
}
return result;
}
/**
* saves the given process log to the database.
*/
public void saveProcessLog(ProcessLog processLog) {
try {
session.save(processLog);
} catch (Exception e) {
log.error(e);
jbpmSession.handleException();
throw new JbpmException("couldn't save process log '"+processLog+"'", e);
}
}
/**
* load the process log for a given id.
*/
public ProcessLog loadProcessLog(long processLogId) {
ProcessLog processLog = null;
try {
processLog = (ProcessLog) session.load(ProcessLog.class, new Long(processLogId));
} catch (Exception e) {
log.error(e);
jbpmSession.handleException();
throw new JbpmException("couldn't load process log '"+processLogId+"'", e);
}
return processLog;
}
/**
* get the process log for a given id.
*/
public ProcessLog getProcessLog(long processLogId) {
ProcessLog processLog = null;
try {
processLog = (ProcessLog) session.get(ProcessLog.class, new Long(processLogId));
} catch (Exception e) {
log.error(e);
jbpmSession.handleException();
throw new JbpmException("couldn't get process log '"+processLogId+"'", e);
}
return processLog;
}
private static final Log log = LogFactory.getLog(LoggingSession.class);
}