com.glaf.jbpm.action.JoinAction.java Source code

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Here is the source code for com.glaf.jbpm.action.JoinAction.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.glaf.jbpm.action;

import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.commons.lang3.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jbpm.context.exe.ContextInstance;
import org.jbpm.graph.def.ActionHandler;
import org.jbpm.graph.exe.ExecutionContext;
import org.jbpm.graph.exe.Token;
import org.jbpm.graph.node.Join;
import org.jbpm.taskmgmt.exe.TaskInstance;
import org.jbpm.taskmgmt.exe.TaskMgmtInstance;

import com.glaf.core.util.StringTools;
import com.glaf.jbpm.el.DefaultExpressionEvaluator;

public class JoinAction implements ActionHandler {
    private final transient Log logger = LogFactory.getLog(JoinAction.class);
    private static final long serialVersionUID = 1L;

    protected String expression;

    /**
     * ?????
     */
    protected String includes;

    /**
     * ????
     */
    protected String excludes;

    protected String nodeType;

    protected boolean visible;

    protected boolean selected;

    public void execute(ExecutionContext ctx) throws Exception {
        logger.debug("------------------------------------------------------");
        logger.debug("----------------JoinAction----------------------------");
        logger.debug("------------------------------------------------------");

        boolean executable = true;

        Map<String, Object> params = new java.util.HashMap<String, Object>();

        ContextInstance contextInstance = ctx.getContextInstance();
        Map<String, Object> variables = contextInstance.getVariables();
        if (variables != null && variables.size() > 0) {
            Iterator<String> iterator = variables.keySet().iterator();
            while (iterator.hasNext()) {
                String variableName = iterator.next();
                if (params.get(variableName) == null) {
                    Object value = contextInstance.getVariable(variableName);
                    params.put(variableName, value);
                }
            }
        }

        if (StringUtils.isNotEmpty(expression)) {
            if (expression.startsWith("#{") && expression.endsWith("}")) {
                Object value = DefaultExpressionEvaluator.evaluate(expression, params);
                if (value != null) {
                    if (value instanceof Boolean) {
                        Boolean b = (Boolean) value;
                        executable = b.booleanValue();
                    }
                }
            }
        }

        if (!executable) {
            logger.debug("???false??");
            return;
        }

        Join join = (Join) ctx.getNode();
        join.setDiscriminator(true);

        Token root = ctx.getToken().getParent();
        Collection<Token> childTokenList = root.getChildren().values();
        TaskMgmtInstance tms = ctx.getTaskMgmtInstance();
        if (StringUtils.isNotEmpty(includes)) {
            List<String> rows = StringTools.split(includes, ",");
            Iterator<Token> iter = childTokenList.iterator();
            while (iter.hasNext()) {
                Token childToken = iter.next();
                Collection<TaskInstance> taskInstances = tms.getUnfinishedTasks(childToken);
                Iterator<TaskInstance> it = taskInstances.iterator();
                while (it.hasNext()) {
                    TaskInstance taskInstance = it.next();
                    if (rows.contains(taskInstance.getName())) {
                        if (taskInstance.isBlocking()) {
                            taskInstance.setBlocking(false);
                        }
                        if (taskInstance.isSignalling()) {
                            taskInstance.setSignalling(false);
                        }
                        taskInstance.cancel();
                    }
                }
            }
        } else {
            List<String> rows = StringTools.split(excludes, ",");
            Iterator<Token> iter = childTokenList.iterator();
            while (iter.hasNext()) {
                Token childToken = iter.next();
                Collection<TaskInstance> taskInstances = tms.getUnfinishedTasks(childToken);
                Iterator<TaskInstance> it = taskInstances.iterator();
                while (it.hasNext()) {
                    TaskInstance taskInstance = it.next();
                    if (!(rows != null && rows.contains(taskInstance.getName()))) {
                        if (taskInstance.isBlocking()) {
                            taskInstance.setBlocking(false);
                        }
                        if (taskInstance.isSignalling()) {
                            taskInstance.setSignalling(false);
                        }
                        taskInstance.cancel();
                    }
                }
            }
        }
    }

    public String getExpression() {
        return expression;
    }

    public String getNodeType() {
        return nodeType;
    }

    public boolean isSelected() {
        return selected;
    }

    public boolean isVisible() {
        return visible;
    }

    public void setExpression(String expression) {
        this.expression = expression;
    }

    public void setNodeType(String nodeType) {
        this.nodeType = nodeType;
    }

    public void setSelected(boolean selected) {
        this.selected = selected;
    }

    public void setVisible(boolean visible) {
        this.visible = visible;
    }

}