package UIB.JHY;

import CoreFS.SA01.CoreIComponent;
import CoreFS.SA06.CoreReturnObject;
import UIB.COM.XmlSqlParsersFactory;

import java.sql.SQLException;
import java.util.ArrayList;

public class ComQuery extends CoreIComponent {
    /**
     * @param list 第一个参数为SQL的ID
     * @return
     * @throws Exception
     * @desc 简单查询，自动判断是否带有参数传递
     */
    public CoreReturnObject doSimpleQuery(String dao, ArrayList list) throws Exception {
        CoreReturnObject cro = null;
        if (list == null) throw new Exception("错误，参数不允许为null！");

        if (list.size() == 0) throw new Exception("错误，没有传入任何参数！");

        String sqlID = list.get(0).toString();//传入的第一个参数为SQL的ID
        try {
            if (list.size() == 1)//无参查询
            {
                cro = this.queryNoParameter(dao, sqlID);
            } else//带参查询
            {
                cro = this.queryWithParameter(dao, sqlID, list);
            }
        } catch (Exception ex) {
            System.out.print("查询参数错误： " + ex.getMessage());
        }

        return cro;
    }

    /**
     * @param
     * @return
     * @desc 连续查询，执行多条查询语句，一次返回结果
     */
    public CoreReturnObject doContQluery(String dao, ArrayList list) throws Exception {
        if (list == null) throw new Exception("错误，参数不允许为null！");

        if (list.size() == 0) throw new Exception("错误，没有传入任何参数！");
        ArrayList al = new ArrayList();
        CoreReturnObject cro1 = new CoreReturnObject();//最终结果
        for (int i = 0; i < list.size(); i++) {
            al.add(doSimpleQuery(dao, (ArrayList) list.get(i)).getResult());
        }
        cro1.setResult(al);
        return cro1;
    }

    /**
     * @param sqlID
     * @param list
     * @return
     * @throws SQLException
     * @desc 带参数SQL
     */
    private CoreReturnObject queryWithParameter(String dao, String sqlID, ArrayList list) throws SQLException {
        CoreReturnObject cro = null;
        int len = list.size() - 1;
        Object[] obj = new Object[len];
        //System.out.println("list长度："+list.size());
        for (int i = 0; i < len; i++) {
            obj[i] = list.get(i + 1).toString();//第0个参数为SQL语句，SQL语句中的参数需要从第一个开始
//			System.out.println("参数值："+obj[i].toString());
        }
        cro = this.getDao(dao).ExcuteQuery(XmlSqlParsersFactory.getSql(sqlID), obj);
        return cro;
    }

    /**
     * @param sqlID
     * @return
     * @throws SQLException
     * @desc 无参数查询
     */
    private CoreReturnObject queryNoParameter(String dao, String sqlID) throws SQLException {
        CoreReturnObject cro = null;
        cro = this.getDao(dao).ExcuteQuery(XmlSqlParsersFactory.getSql(sqlID));
        return cro;
    }
}