com.scudata.server.unit.ConnectionProxy Maven / Gradle / Ivy

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SPL(Structured Process Language) A programming language specially for structured data computing.

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package com.scudata.server.unit;

import java.util.List;

import com.scudata.common.Logger;
import com.scudata.dm.Context;
import com.scudata.server.ConnectionProxyManager;
import com.scudata.server.IProxy;
import com.scudata.util.DatabaseUtil;

/**
 * ???Ӵ???????
 * 
 * @author Joancy
 *
 */
public class ConnectionProxy extends IProxy
{
	Context context;
	boolean closed = false;

	/**
	 * ????һ?????Ӵ???
	 * @param cpm ???Ӵ?????????
	 * @param id ???????
	 * @param spaceId ?ռ???
	 */
	public ConnectionProxy(ConnectionProxyManager cpm, int id){
		super(cpm, id);
		context = new Context();
		List connectedDsNames = null;
		UnitServer us = UnitServer.instance;
		if( us != null ){
			if(us.getRaqsoftConfig()!=null){
				connectedDsNames = us.getRaqsoftConfig().getAutoConnectList();
			}
		}
		DatabaseUtil.connectAutoDBs(context, connectedDsNames);

		access();
		Logger.debug(this+" connected.");
	}
	
	/**
	 * ????id??ȡStatement??????
	 * @param id ???????
	 * @return Statement??????
	 * @throws Exception
	 */
	public StatementProxy getStatementProxy(int id) throws Exception{
		StatementProxy sp = (StatementProxy)getProxy(id); 
		if(sp==null){
			throw new Exception("Statement "+id+" is not exist or out of time!");
		}
		return sp; 
	}
	
	/**
	 * ??ȡ???㻷????????
	 * @return ??????????
	 */
	public Context getContext(){
		return context;
	}
	
	/**
	 * ?ж??????Ƿ??ѹر?
	 * @return ?رշ???true?????򷵻?false
	 */
	public boolean isClosed(){
		return closed;
	}
	
	/**
	 * ?ص???ǰ???Ӵ?????
	 */
	public void close() {
		DatabaseUtil.closeAutoDBs(context);
		closed =  true;
		Logger.debug(this+" closed.");
	}

	/**
	 * ʵ??toString?ӿ?
	 */
	public String toString() {
		return "Connection "+getId();
	}
	
}