package com.artfess.activiti.cmd;

import org.activiti.engine.impl.interceptor.Command;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.impl.persistence.entity.ExecutionEntity;

/**
 * 获取顶层流程的流程变量。
 * <pre>
 * 构建组：x5-bpmx-activiti
 * 作者：ray
 * 邮箱:zhangyg@jee-soft.cn
 * 日期:2014-8-4-下午3:28:19
 * 版权：广州宏天软件有限公司版权所有
 * </pre>
 */
public class GetSuperVariableCmd implements Command<Object> {

    private String bpmnInstId = "";
    private String varName = "";

    public void setBpmnInstId(String bpmnInstId) {
        this.bpmnInstId = bpmnInstId;
    }

    public void setVarName(String varName) {
        this.varName = varName;
    }

    public GetSuperVariableCmd() {
    }

    public GetSuperVariableCmd(String bpmnInstId, String varName) {
        this.bpmnInstId = bpmnInstId;
        this.varName = varName;
    }

    @Override
    public Object execute(CommandContext context) {
        ExecutionEntity execution = context.getExecutionEntityManager().findExecutionById(bpmnInstId);
        if (execution.getSuperExecution() == null) {
            return null;
        }
        ExecutionEntity superExecution = execution.getSuperExecution();
        return superExecution.getVariable(this.varName);
    }

}