bboss高性能db批处理功能使用方法介绍

bboss持久层在v5.0.3.5中新增简单的高效的db批处理功能，本文介绍使用方法。
首先在项目中导入bboss 持久层包：
maven坐标
<dependency>
    <groupId>com.bbossgroups</groupId>
    <artifactId>bboss-persistent</artifactId>
    <version>5.8.2</version>
</dependency>
gradle坐标
compile 'com.bbossgroups:bboss-persistent:5.8.2'

轻量级批处理方法
直接操作sql语句的组件SQLExecutor
com.frameworkset.common.poolman.SQLExecutor

public static <T> void executeBatch(String sql,List<T> datas,int batchsize, BatchHandler<T> batchHandler) throws SQLException	
//指定数据源dbname
public static <T> void executeBatch(String dbname,String sql,List<T> datas,int batchsize, BatchHandler<T> batchHandler) throws SQLException

加载sql配置文件的组件ConfigSQLExecutor
com.frameworkset.common.poolman.ConfigSQLExecutor

public <T> void executeBatch(String sqlname,List<T> datas,int batchsize, BatchHandler<T> batchHandler) throws SQLException
//指定数据源dbname
public <T> void executeBatch(String dbname,String sqlname,List<T> datas,int batchsize, BatchHandler<T> batchHandler) throws SQLException

批处理语句参数设置器：

package com.frameworkset.common.poolman;
/**
 * 轻量级jdbc批处理操作记录设置器
 */

import java.sql.PreparedStatement;
import java.sql.SQLException;

public interface BatchHandler<T> {
	/**
	 *
	 * @param stmt jdbc PreparedStatement   parameterIndex the first parameter is 1, the second is 2, ...
	 *                                      x the parameter value
	 * @param record 当前操作的变量
	 * @param i 行索引
	 * @throws SQLException
	 */
	public void handler(PreparedStatement stmt,T record,int i) throws SQLException;

}

使用实例
以SQLExecutor组件来做为例子介绍如下：

@Test
    public void testBatch() throws SQLException {
        List<Map<String,String>> datas = new ArrayList<Map<String,String>>();//构造数据
        for(int i = 0; i < 100000; i ++){
            Map<String,String> data = new HashMap<String, String>();
            if(i % 3 == 0)
                data.put("name","jack_"+i);
            else if(i % 3 == 1)
                data.put("name","brown_"+i);
            else if(i % 3 == 2)
                data.put("name","john_"+i);
            datas.add(data);
        }
        SQLExecutor.delete("delete from batchtest");//清空表数据
//批处理执行
        SQLExecutor.executeBatch("insert into batchtest (name) values(?)", datas, 10,new BatchHandler<Map<String,String>>() {
            @Override
            public void handler(PreparedStatement stmt, Map<String,String> record, int i) throws SQLException {
                stmt.setString(1,record.get("name"));
            }
        });
    }