queryrunner.java

来自「《Java与模式》一书的源代码」· Java 代码 · 共 24 行

package com.javapatterns.factorymethod.query;

import java.sql.Connection;
import java.sql.ResultSet;

public abstract class QueryRunner
{
    public ResultSet run() throws Exception
    {
        Connection conn = createConnection();

        String sql = createSql();

        return runSql(conn, sql);
    }

    protected abstract Connection createConnection();

    protected abstract String createSql();

    protected abstract ResultSet runSql(Connection conn, String sql)
    throws Exception;
}