338 lines
8.8 KiB
C#
338 lines
8.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Data;
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using Easy4net.DBUtility;
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using Easy4net.Context;
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namespace Easy4net.Common
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{
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/// <summary>
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/// 参数映射集合类
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/// </summary>
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public class ParamMap : Map
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{
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/// <summary>
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/// 是否分页
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/// </summary>
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private bool isPage;
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/// <summary>
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/// 页面偏移量
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/// </summary>
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private int pageOffset;
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/// <summary>
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/// 每页限制记录数
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/// </summary>
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private int pageLimit;
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/// <summary>
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/// 排序字段
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/// </summary>
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private string orderFields;
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/// <summary>
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/// 是否递减排序
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/// </summary>
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private bool isDesc = true;
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/// <summary>
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/// 数据库参数集合
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/// </summary>
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private List<IDbDataParameter> m_ParamList = new List<IDbDataParameter>();
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/// <summary>
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/// 创建一个参数映射集合
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/// </summary>
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private ParamMap() { }
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/// <summary>
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/// 排序的字段
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/// </summary>
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public string OrderFields
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{
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get { return orderFields; }
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set { orderFields = value; }
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}
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/// <summary>
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/// 是否递减排序
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/// </summary>
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public bool IsDesc
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{
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get { return isDesc; }
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set { isDesc = value; }
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}
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/// <summary>
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/// 创建一个参数映射集合
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/// </summary>
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/// <returns></returns>
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public static ParamMap NewMap()
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{
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ParamMap paramMap = new ParamMap();
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return paramMap;
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}
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/// <summary>
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/// 是否进行分页
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/// </summary>
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public bool IsPage
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{
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get
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{
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return isPage;
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}
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}
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/// <summary>
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/// 每页的偏移量
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/// </summary>
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public int PageOffset
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{
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get
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{
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if (this.ContainsKey("pageIndex") && this.ContainsKey("pageSize"))
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{
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int pageIndex = this.getInt("pageIndex");
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int pageSize = this.getInt("pageSize");
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if (pageIndex <= 0) pageIndex = 1;
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if (pageSize <= 0) pageSize = 1;
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return (pageIndex - 1) * pageSize;
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}
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return 0;
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}
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}
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/// <summary>
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/// 每页的记录条数限制
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/// </summary>
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public int PageLimit
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{
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get
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{
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if (this.ContainsKey("pageSize"))
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{
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return this.getInt("pageSize");
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}
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return 0;
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}
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}
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/// <summary>
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/// 根据键值获取整型数据
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/// </summary>
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/// <param name="key"></param>
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/// <returns></returns>
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public int getInt(string key)
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{
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var value = this[key];
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return Convert.ToInt32(value);
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}
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/// <summary>
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/// 根据键值获取字符串数据
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/// </summary>
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/// <param name="key"></param>
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/// <returns></returns>
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public String getString(string key)
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{
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var value = this[key];
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return Convert.ToString(value);
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}
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/// <summary>
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/// 根据键值获取Double型数据
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/// </summary>
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/// <param name="key"></param>
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/// <returns></returns>
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public Double toDouble(string key)
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{
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var value = this[key];
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return Convert.ToDouble(value);
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}
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/// <summary>
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/// 根据键值获取Long型数据
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/// </summary>
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/// <param name="key"></param>
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/// <returns></returns>
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public Int64 toLong(string key)
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{
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var value = this[key];
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return Convert.ToInt64(value);
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}
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/// <summary>
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/// 根据键值获取Decimal型数据
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/// </summary>
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/// <param name="key"></param>
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/// <returns></returns>
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public Decimal toDecimal(string key)
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{
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var value = this[key];
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return Convert.ToDecimal(value);
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}
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/// <summary>
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/// 根据键值获取DateTime型数据
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/// </summary>
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/// <param name="key"></param>
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/// <returns></returns>
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public DateTime toDateTime(string key)
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{
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var value = this[key];
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return Convert.ToDateTime(value);
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}
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/// <summary>
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/// 设置排序字段及排序方式
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/// </summary>
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/// <param name="orderFields">排序字段</param>
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/// <param name="isDesc">是否为递减排序</param>
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public void setOrderFields(string orderFields, bool isDesc)
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{
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this.orderFields = orderFields;
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this.isDesc = isDesc;
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}
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/// <summary>
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/// 此方法已过时，请使用 setPageParamters方法分页
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/// </summary>
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/// <param name="pageIndex"></param>
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[Obsolete("此方法已过时，请使用 setPageParamters方法分页")]
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private void setPageIndex(int pageIndex)
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{
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this["pageIndex"] = pageIndex;
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setPages();
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}
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/// <summary>
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/// 此方法已过时，请使用 setPageParamters方法分页
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/// </summary>
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/// <param name="pageSize"></param>
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[Obsolete("此方法已过时，请使用 setPageParamters方法分页")]
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private void setPageSize(int pageSize)
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{
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this["pageSize"] = pageSize;
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setPages();
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}
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/// <summary>
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/// 分页参数设置
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/// </summary>
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/// <param name="page">第几页，从0开始</param>
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/// <param name="limit">每页最多显示几条数据</param>
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public void setPageParamters(int page, int limit)
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{
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this["pageIndex"] = page;
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this["pageSize"] = limit;
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setPages();
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}
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/// <summary>
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/// 设置分页参数
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/// </summary>
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private void setPages()
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{
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Session session = SessionThreadLocal.Get();
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if (this.ContainsKey("pageIndex") && this.ContainsKey("pageSize"))
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{
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this.isPage = true;
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if (session.DbFactory.DbType == DatabaseType.MYSQL || session.DbFactory.DbType == DatabaseType.SQLITE)
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{
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this["offset"] = this.PageOffset;
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this["limit"] = this.PageLimit;
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this.Remove("pageIndex");
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this.Remove("pageSize");
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this.Add("offset", this.getInt("offset"));
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this.Add("limit", this.getInt("limit"));
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}
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if (session.DbFactory.DbType == DatabaseType.SQLSERVER)
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{
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int pageIndex = this.getInt("pageIndex");
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int pageSize = this.getInt("pageSize");
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if (pageIndex <= 0) pageIndex = 1;
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if (pageSize <= 0) pageSize = 1;
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this["pageStart"] = (pageIndex - 1) * pageSize + 1;
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this["pageEnd"] = pageIndex * pageSize;
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this.Remove("pageIndex");
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this.Remove("pageSize");
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this.Add("pageStart", this.getInt("pageStart"));
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this.Add("pageEnd", this.getInt("pageEnd"));
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}
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if (session.DbFactory.DbType == DatabaseType.ACCESS)
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{
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int pageIndex = this.getInt("pageIndex");
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int pageSize = this.getInt("pageSize");
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this["page_offset"] = pageIndex * pageSize;
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this["page_limit"] = pageSize;
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this.Remove("pageIndex");
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this.Remove("pageSize");
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}
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}
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}
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/// <summary>
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/// 添加键值对映射
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/// </summary>
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/// <param name="key"></param>
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/// <param name="value"></param>
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public override void Add(object key, object value)
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{
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base.Put(key, value);
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Session session = SessionThreadLocal.Get();
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IDbDataParameter param = session.DbFactory.CreateDbParameter(key.ToString(), value);
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m_ParamList.Add(param);
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}
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/// <summary>
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/// 添加键值对映射
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/// </summary>
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/// <param name="key"></param>
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/// <param name="value"></param>
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public new void Put(object key, object value)
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{
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this.Add(key, value);
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}
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/// <summary>
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/// 添加键值对映射
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/// </summary>
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/// <param name="key"></param>
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/// <param name="value"></param>
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public new void setParameter(string key, object value)
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{
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this.Add(key, value);
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}
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/// <summary>
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/// 输出参数集合
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/// </summary>
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/// <returns></returns>
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public IDbDataParameter[] toDbParameters()
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{
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int i = 0;
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IDbDataParameter[] paramArr = new IDbDataParameter[m_ParamList.Count];
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foreach (IDbDataParameter dbParameter in m_ParamList)
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{
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paramArr[i] = dbParameter;
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i++;
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}
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return paramArr;
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}
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}
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}
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