/*
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* JBoss, Home of Professional Open Source
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* Copyright 2005, JBoss Inc., and individual contributors as indicated
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* by the @authors tag. See the copyright.txt in the distribution for a
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* full listing of individual contributors.
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*
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* This is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this software; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
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*/
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package org.jbpm.pvm.internal.cmd;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import org.jbpm.api.cmd.Environment;
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import org.jbpm.api.history.HistoryComment;
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import org.jbpm.pvm.internal.history.model.HistoryDetailImpl;
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import org.jbpm.pvm.internal.history.model.HistoryTaskImpl;
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import org.jbpm.pvm.internal.session.DbSession;
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/**
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* @author Tom Baeyens
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*/
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public class GetTaskCommentsCmd extends AbstractCommand<List<HistoryComment>> {
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private static final long serialVersionUID = 1L;
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protected String taskId;
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public GetTaskCommentsCmd(String taskId) {
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this.taskId = taskId;
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}
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public List<HistoryComment> execute(Environment environment) throws Exception {
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DbSession dbSession = environment.get(DbSession.class);
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List<HistoryComment> comments = dbSession.findCommentsByTaskId(taskId);
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forceInitializationAndClean(comments);
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return comments;
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}
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protected void forceInitializationAndClean(List<HistoryComment> comments) {
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if (comments!=null) {
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comments.size();
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List<HistoryComment> copy = new ArrayList<HistoryComment>(comments);
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for (int i=0; i<copy.size(); i++) {
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HistoryComment comment = copy.get(i);
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// when comments get deleted, it's possible that we
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// get null values in the list as the indexes of the
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// other comments are not upated.
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// So if there is a null value, we can safely delete it
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// from the persistent list and cause the indexes to
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// be updated
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if (comment==null) {
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comments.remove(i);
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} else {
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forceInitializationAndClean(comment.getReplies());
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}
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}
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}
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}
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}
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