cyf
143 lines
4.7 KiB
C#
143 lines
4.7 KiB
C#
using System;
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using System.Collections;
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using System.Text;
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using Zhaizj.Framework.ORM;
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using Zhaizj.Framework.ORM.Caching;
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namespace Zhaizj.Framework {
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/// <summary>
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/// 集中了对象的常用 CRUD (读取/插入/更新/删除) 操作方法，非泛型实现。主要用于某些不能使用泛型的场合，不太常用。
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/// </summary>
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public class ndb {
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/// <summary>
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/// 根据 id 查询对象
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/// </summary>
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/// <param name="t">对象的类型</param>
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/// <param name="id">对象的 id</param>
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/// <returns></returns>
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public static IEntity findById( Type t, int id ) {
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if (id < 0) return null;
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IEntity objCache = ObjectPool.FindOne( t, id );
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if (objCache == null) {
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ObjectInfo state = new ObjectInfo( t );
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objCache = ObjectDB.FindById( id, state );
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ObjectPool.Add( objCache );
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}
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return objCache;
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}
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/// <summary>
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/// 查询 t 类型对象的所有数据
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/// </summary>
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/// <param name="t"></param>
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/// <returns></returns>
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public static IList findAll( Type t ) {
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ObjectInfo state = new ObjectInfo( t );
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state.includeAll();
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IList objList = ObjectPool.FindAll( t );
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if (objList == null) {
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objList = ObjectDB.FindAll( state );
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ObjectPool.AddAll( t, objList );
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}
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return objList;
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}
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/// <summary>
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/// 根据条件查询
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/// </summary>
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/// <param name="t"></param>
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/// <param name="condition">查询对象</param>
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/// <returns>返回查询对象Query，可以进一步参数化赋值，并得到结果</returns>
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public static Query find( Type t, String condition ) {
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ObjectInfo state = new ObjectInfo( t );
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return ObjectDB.Find( state, condition );
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}
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/// <summary>
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/// 根据查询条件，返回分页数据集合
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/// </summary>
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/// <param name="t"></param>
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/// <param name="condition">查询条件</param>
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/// <returns>分页数据列表，包括当前页、总记录数、分页条等</returns>
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public static IPageList findPage( Type t, String condition ) {
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return findPage( t, condition, -1 );
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}
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/// <summary>
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/// 根据查询条件，返回分页数据集合
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/// </summary>
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/// <param name="t"></param>
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/// <param name="condition">查询条件</param>
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/// <param name="pageSize">每页数量</param>
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/// <returns>分页数据列表，包括当前页、总记录数、分页条等</returns>
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public static IPageList findPage( Type t, String condition, int pageSize ) {
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ObjectInfo state = new ObjectInfo( t );
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state.includeAll();
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if (pageSize > 0) state.Pager.setSize( pageSize );
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IList list = ObjectDB.FindPage( state, condition );
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IPageList result = new PageList();
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result.Results = list;
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result.PageCount = state.Pager.PageCount;
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result.RecordCount = state.Pager.RecordCount;
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result.Size = pageSize>0 ? pageSize: state.Pager.getSize();
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result.PageBar = state.Pager.PageBar;
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result.Current = state.Pager.getCurrent();
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return result;
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}
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/// <summary>
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/// 根据 sql 语句，查询对象
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/// </summary>
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/// <param name="t"></param>
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/// <param name="sql"></param>
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/// <returns>返回对象列表</returns>
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public static Object findBySql( Type t, String sql ) {
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IList objList = ObjectPool.FindBySql( sql, t );
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if (objList == null) {
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objList = ObjectDB.FindBySql( sql, t );
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ObjectPool.AddSqlList( sql, objList );
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}
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return objList;
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}
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/// <summary>
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/// 统计 t 类型对象的所有数据量
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/// </summary>
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/// <param name="t"></param>
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/// <returns></returns>
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public static int count( Type t ) {
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return ObjectDB.Count( t );
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}
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/// <summary>
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/// 根据条件统计数据量
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/// </summary>
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/// <param name="t"></param>
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/// <param name="condition">统计条件</param>
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/// <returns></returns>
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public static int count( Type t, String condition ) {
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return ObjectDB.Count( t, condition );
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}
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/// <summary>
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/// 根据 id 删除对象
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/// </summary>
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/// <param name="t"></param>
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/// <param name="objId">对象 id</param>
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/// <returns>返回受影响的行数</returns>
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public static int delete( Type t, int objId ) {
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int num = ObjectDB.Delete( t, objId );
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ObjectPool.Delete( t, objId );
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return num;
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}
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}
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}
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