/*
* 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.pvm.internal.cmd;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.jbpm.api.history.HistoryComment;
import org.jbpm.pvm.internal.env.Environment;
import org.jbpm.pvm.internal.history.model.HistoryDetailImpl;
import org.jbpm.pvm.internal.history.model.HistoryTaskImpl;
import org.jbpm.pvm.internal.session.DbSession;
/**
* @author Tom Baeyens
*/
public class GetTaskCommentsCmd extends AbstractCommand<List<HistoryComment>> {
private static final long serialVersionUID = 1L;
protected String taskId;
public GetTaskCommentsCmd(String taskId) {
this.taskId = taskId;
}
public List<HistoryComment> execute(Environment environment) throws Exception {
DbSession dbSession = environment.get(DbSession.class);
List<HistoryComment> comments = dbSession.findCommentsByTaskId(taskId);
forceInitializationAndClean(comments);
return comments;
}
protected void forceInitializationAndClean(List<HistoryComment> comments) {
if (comments!=null) {
comments.size();
List<HistoryComment> copy = new ArrayList<HistoryComment>(comments);
for (int i=0; i<copy.size(); i++) {
HistoryComment comment = copy.get(i);
// when comments get deleted, it's possible that we
// get null values in the list as the indexes of the
// other comments are not upated.
// So if there is a null value, we can safely delete it
// from the persistent list and cause the indexes to
// be updated
if (comment==null) {
comments.remove(i);
} else {
forceInitializationAndClean(comment.getReplies());
}
}
}
}
}