com.bstek.urule.model.flow.JoinNode Maven / Gradle / Ivy
/*******************************************************************************
* Copyright 2017 Bstek
*
* 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.bstek.urule.model.flow;
import com.bstek.urule.RuleException;
import com.bstek.urule.model.flow.ins.FlowContext;
import com.bstek.urule.model.flow.ins.FlowInstance;
/**
* @author Jacky.gao
* @since 2015年4月20日
*/
public class JoinNode extends FlowNode {
private FlowNodeType type=FlowNodeType.Join;
public JoinNode() {
}
public JoinNode(String name) {
super(name);
}
@Override
public FlowNodeType getType() {
return type;
}
@Override
public void enterNode(FlowContext context,FlowInstance instance) {
instance.setCurrentNode(this);
executeNodeEvent(EventType.enter, context, instance);
FlowInstance parentInstance=instance.getParent();
if(parentInstance==null){
throw new RuleException("Invalid flow instance.");
}
String id=parentInstance.getId();
int arrivedChild=1;
if(context.getVariable(id)==null){
context.addVariable(id, arrivedChild);
}else{
arrivedChild=(Integer)context.getVariable(id);
arrivedChild++;
context.addVariable(id, arrivedChild);
}
executeNodeEvent(EventType.leave, context, instance);
int childCount=instance.getParallelInstanceCount();
if(arrivedChild>=childCount){
context.removeVariable(id);
leave(null,context,parentInstance);
}
}
}