/*
* Copyright 2010-2011 the original author or authors.
*
* Licensed 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.starflow.wf.engine.core.split;
import java.util.ArrayList;
import java.util.List;
import com.starflow.wf.engine.ProcessEngineException;
import com.starflow.wf.engine.core.ActivityTypeFactory;
import com.starflow.wf.engine.core.activity.ActivityType;
import com.starflow.wf.engine.event.AbstractFlowEvent;
import com.starflow.wf.engine.event.support.ActivityStartRuleUtil;
import com.starflow.wf.engine.event.support.EventUtil;
import com.starflow.wf.engine.model.ActivityInst;
import com.starflow.wf.engine.model.elements.ActivityElement;
import com.starflow.wf.service.filter.ProcessFilter;
import com.starflow.wf.service.filter.TransCtrlFilter;
/**
* 单一分支（XOR）
*
* @author libinsong1204@gmail.com
* @version 1.0
*/
public class SingleSplitMode extends AbstractSplitMode {
public List<ActivityInst> createNextActInsts(AbstractFlowEvent event, List<ActivityElement> activityXmls) {
List<ActivityInst> actInsts = new ArrayList<ActivityInst>();
if(activityXmls.size()<1)
throw new ProcessEngineException("没有满足条件的分支节点，无法创建下一环节");
//单一分支，只取第一个满足条件的分支环节
ActivityElement activityXml = activityXmls.get(0);
String actType = activityXml.getType();
ActivityType type = ActivityTypeFactory.buildActivityType(actType);
if(isStartAct(event, activityXml)) {
ActivityInst activityInst = type.createActivity(event, activityXml);
if(ActivityStartRuleUtil.isStartActivity(event, activityInst))
EventUtil.publishActivityStartEvent(event, activityInst, activityXml);
actInsts.add(activityInst);
} else {
//下个环节没有满足聚合条件，不能启动，只保存运行轨迹
for(ProcessFilter filter : event.getProcessEngine().getProcessFilters()) {
if(filter instanceof TransCtrlFilter) {
((TransCtrlFilter)filter).saveTransCtrlCanNotAct(event, activityXml);
}
}
}
return actInsts;
}
}