datadictmanager.java

用java开发的一个企业的DRP系统源码

package com.bjsxt.drp.util.datadict;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

import com.bjsxt.drp.util.DB;

/**
 * 管理数据字典的类
 * @author Administrator
 *
 */
public class DataDictManager {
	
	private static DataDictManager instance = new DataDictManager();

	private DataDictManager() {
	}

	public static DataDictManager getInstance() {
		return instance;
	}
	/**
	 * 获取分销商级别
	 * @return ClientLevel的集合
	 */

	public List getClientLevelList() {
		String sql = "select id, name from t_data_dict where category='client_level' order by id";
		Connection conn = null;
		Statement stmt = null;
		ResultSet rs = null;
		List clientLevelList = new ArrayList();
		try {
			conn = DB.getConn();
			stmt = conn.createStatement();
			rs = stmt.executeQuery(sql);
			while (rs.next()) {
				ClientLevel cl = new ClientLevel();
				cl.setId(rs.getString("id"));
				cl.setName(rs.getString("name"));
				clientLevelList.add(cl);
			}
		} catch (final SQLException e) {
			e.printStackTrace();
		} finally {
			DB.closeRs(rs);
			DB.closeStmt(stmt);
			DB.closeConn(conn);
		}
		return clientLevelList;
	}
	
	/**
	 * 返回物料类别的结合
	 * @return ItemCategory对象的集合
	 */
	public List getItemCategoryList() {
		String sql = "select id, name from t_data_dict where category='item_category' order by id";
		Connection conn = null;
		Statement stmt = null;
		ResultSet rs = null;
		List itemCategoryList = new ArrayList();
		try {
			conn = DB.getConn();
			stmt = conn.createStatement();
			rs = stmt.executeQuery(sql);
			while (rs.next()) {
				ItemCategory ic = new ItemCategory();
				ic.setId(rs.getString("id"));
				ic.setName(rs.getString("name"));
				itemCategoryList.add(ic);
			}
		} catch (final SQLException e) {
			e.printStackTrace();
		} finally {
			DB.closeRs(rs);
			DB.closeStmt(stmt);
			DB.closeConn(conn);
		}
		return itemCategoryList;
	}

	/**
	 * 返回物料类别的结合
	 * @return ItemCategory对象的集合
	 */
	public List getItemUnitList() {
		String sql = "select id, name from t_data_dict where category='item_unit' order by id";
		Connection conn = null;
		Statement stmt = null;
		ResultSet rs = null;
		List itemUnitList = new ArrayList();
		try {
			conn = DB.getConn();
			stmt = conn.createStatement();
			rs = stmt.executeQuery(sql);
			while (rs.next()) {
				ItemUnit iu = new ItemUnit();
				iu.setId(rs.getString("id"));
				iu.setName(rs.getString("name"));
				itemUnitList.add(iu);
			}
		} catch (final SQLException e) {
			e.printStackTrace();
		} finally {
			DB.closeRs(rs);
			DB.closeStmt(stmt);
			DB.closeConn(conn);
		}
		return itemUnitList;
	}
}