varhandler.java

这是一个轻便的j2ee的web应用框架,是一个在多个项目中运用的实际框架,采用struts,hebinate,xml等技术,有丰富的tag,role,navigation,session,dictio

/*
 * Created on 2004-4-1
 *
 */
package com.esimple.service.query.handler;

import java.util.*;
import com.esimple.framework.util.StringUtils;
import com.esimple.service.query.config.*;
/**
 * @author steven
 *
 */
public class VarHandler implements SqlHandler {
	public String  toSqlString(QueryConfig query,String sql,String role,HashMap context)throws Exception{
		if( context == null ) return sql;
		if( context.isEmpty() ) return sql;
		
		ArrayList list = query.getConditions();
		QueryConditionConfig conf;
		for( int i=0;i< list.size();i++){
			conf =(QueryConditionConfig)list.get(i);
			String id = conf.getId();
			Object obj = context.get(id);
			if( obj == null ) continue;
			String value = obj.toString();
			sql = StringUtils.replace(sql,"$"+id,value);
		}
		return sql;
	}
}