cyf
263 lines
9.0 KiB
C#
263 lines
9.0 KiB
C#
/*
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* Copyright 2010 www.Zhaizj.Framework.com
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Collections;
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using Zhaizj.Framework.Caching;
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using Zhaizj.Framework.Data;
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using Zhaizj.Framework.ORM.Operation;
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using Zhaizj.Framework.ORM.Caching;
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namespace Zhaizj.Framework.ORM.Caching {
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/// <summary>
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/// 二级缓存(application级)的缓存池
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/// </summary>
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internal class ApplicationPool : IObjectPool {
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private static readonly ILog logger = LogManager.GetLogger( typeof( ApplicationPool ) );
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private static IApplicationCache appCache = CacheManager.GetApplicationCache();
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public static ApplicationPool Instance = new ApplicationPool();
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private ApplicationPool() { }
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// 只是单纯加入缓存，比如在findList的时候，顺便加入缓存
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// 插入数据的时候只更新表的timestamp，并不加入缓存
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public void Add( IEntity obj ) {
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if (obj == null) return;
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String key = CacheKey.getObject( obj.GetType(), obj.Id );
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addToApplication( key, obj );
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CacheTime.updateObject( obj ); // 加入缓存的时候，设置最新 timestamp
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}
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public void AddAll( Type t, IList objList ) {
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String key = CacheKey.getObjectAll( t );
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addList( key, objList );
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}
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public void AddQueryList( Type t, String sql, Dictionary<String, Object> parameters, IList objList ) {
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String key = CacheKey.getQuery( t, sql, parameters );
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addList( key, objList );
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}
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public void AddPage( Type t, String condition, ObjectPage pager, IList list ) {
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String key = CacheKey.getPageList( t, condition, pager.getSize(), pager.getCurrent() );
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addList( key, list );
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addToApplication( CacheKey.getPagerInfoKey( key ), pager ); // 添加分页统计数据
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}
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public void AddSqlList( String sql, IList objList ) {
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if (objList == null) return;
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addList( sql, objList );
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}
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//---------------------------------------------------------------
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public void AddCount( Type t, int count ) {
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String key = CacheKey.getCountKey( t );
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addToApplication( key, count );
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CacheTime.updateCount( t );
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}
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public void AddCount( Type t, String condition, int count ) {
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String key = CacheKey.getCountKey( t, condition );
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addToApplication( key, count );
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CacheTime.updateCount( t, condition );
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}
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//-----------------------------------------------------------------
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private static void addToApplication( String key, Object val ) {
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int minutes = DbConfig.Instance.ApplicationCacheMinutes;
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if (minutes == CacheTime.CacheForever) {
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appCache.Put( key, val );
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logger.Debug( "APP_cache_+=>" + key );
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}
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else if (minutes > 0) {
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appCache.Put( key, val, minutes );
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logger.Debug( "APP_cache_+=>" + key );
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}
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}
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private static void addList( String key, IList objList ) {
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if (objList == null) return;
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foreach (IEntity obj in objList) {
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addToApplication( CacheKey.getObject( obj.GetType(), obj.Id ), obj );
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CacheTime.updateObject( obj ); // 加入缓存的时候，设置最新 timestamp
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}
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List<int> ids = new List<int>();
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foreach (IEntity obj in objList) ids.Add( obj.Id );
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addToApplication( key, ids );
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CacheTime.updateList( key );
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}
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//-------------------------------------------------------查询-----------------------------------------------------------
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// 内部调用，需要查询一级缓存
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private IEntity findOnePrivate( Type t, int id ) {
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String key = CacheKey.getObject( t, id );
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IEntity result = ContextPool.Instance.FindOne( t, id );
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if( result != null ) return result;
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result = this.FindOne( t, id );
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ContextPool.Instance.Add( result );
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return result;
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}
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public IEntity FindOne( Type t, int id ) {
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String key = CacheKey.getObject( t, id );
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IEntity result = getFromApplication( key ) as IEntity;
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if (result != null) {
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if (CacheTime.isObjectUpdated( result )) return null; // 检查是否更新
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logger.Debug( "APP_cache_get=>" + key );
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return result;
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}
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return null;
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}
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public IList FindAll( Type t ) {
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return getListFromCache( CacheKey.getObjectAll( t ), t );
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}
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public IList FindByQuery( ConditionInfo condition ) {
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return getListFromCache( CacheKey.getQuery( condition.Type, condition.Sql, condition.Parameters ), condition.Type );
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}
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public IList FindByQuery( Type type, String _queryString, Dictionary<String, Object> _namedParameters ) {
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return getListFromCache( CacheKey.getQuery( type, _queryString, _namedParameters ), type );
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}
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public IPageList FindPage( Type t, String condition, ObjectPage pager ) {
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String key = CacheKey.getPageList( t, condition, pager.getSize(), pager.getCurrent() );
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logger.Debug( "FindPage=>" + t.FullName );
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IList list = getListFromCache( key, t );
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if (list == null) return null;
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IPageList result = new PageList();
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ObjectPage pageInfo = getPagerInfo( key );
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if (pageInfo == null) return null;
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result.Results = list;
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result.PageCount = pageInfo.PageCount;
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result.RecordCount = pageInfo.RecordCount;
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result.Size = pageInfo.getSize();
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result.PageBar = pageInfo.PageBar;
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result.Current = pageInfo.getCurrent();
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return result;
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}
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private static ObjectPage getPagerInfo( String pageKey ) {
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return getFromApplication( CacheKey.getPagerInfoKey( pageKey ) ) as ObjectPage;
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}
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public IList FindBySql( String sql, Type t ) {
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return getListFromCache( sql, t );
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}
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public int FindCount( Type t ) {
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if (CacheTime.isCountUpdate( t )) return -1;
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String key = CacheKey.getCountKey( t );
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Object obj = getFromApplication( key );
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return obj == null ? -1 : (int)obj;
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}
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public int FindCount( Type t, String condition ) {
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if (CacheTime.isCountUpdate( t, condition )) return -1;
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String key = CacheKey.getCountKey( t, condition );
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Object obj = getFromApplication( key );
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return obj == null ? -1 : (int)obj;
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}
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//-----------------------------------------------------------
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public IList getListFromCache( String queryKey, Type t ) {
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if (CacheTime.isListUpdate( queryKey, t )) return null;
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List<int> ids = appCache.Get( queryKey ) as List<int>;
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if (ids == null) return null;
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IList result = new ArrayList();
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foreach (int id in ids) {
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IEntity obj = this.findOnePrivate( t, id );
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if (obj == null) return null;
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if (CacheTime.isObjectUpdated( obj )) return null; // 如果有任何一个对象更新过，则缓存失效
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// 检查实体属性
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renewEntityPropertyValue( obj );
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result.Add( obj );
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}
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logger.Debug( "APP_cache_get=>" + queryKey );
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return result;
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}
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private void renewEntityPropertyValue( IEntity obj ) {
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EntityInfo ei = Entity.GetInfo( obj );
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foreach (EntityPropertyInfo ep in ei.EntityPropertyList) {
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IEntity objP = obj.get( ep.Name ) as IEntity;
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if (objP == null) continue;
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IEntity val = this.findOnePrivate( objP.GetType(), objP.Id );
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if (val == null) continue;
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ep.SetValue( obj, val );
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}
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}
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public static Object getFromApplication( String key ) {
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return appCache.Get( key );
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}
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public void Delete( Type t, int id ) {
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appCache.Remove( CacheKey.getObject( t.FullName, id ) );
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logger.Debug( "Delete=>" + t.FullName + id );
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CacheTime.updateTable( t );
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}
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}
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}
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