| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #pragma once |
| |
| |
| #include "../geode_defs.hpp" |
| #include <vcclr.h> |
| #include "../begin_native.hpp" |
| #include <geode/CacheLoader.hpp> |
| #include "../end_native.hpp" |
| |
| |
| #include "../ICacheLoader.hpp" |
| #include "CacheLoader.hpp" |
| |
| namespace apache |
| { |
| namespace geode |
| { |
| namespace client |
| { |
| |
| /// <summary> |
| /// Wraps the managed <see cref="Apache.Geode.Client.ICacheLoader" /> |
| /// object and implements the native <c>apache::geode::client::CacheLoader</c> interface. |
| /// </summary> |
| class ManagedCacheLoaderGeneric |
| : public apache::geode::client::CacheLoader |
| { |
| public: |
| |
| /// <summary> |
| /// Constructor to initialize with the provided managed object. |
| /// </summary> |
| /// <param name="userptr"> |
| /// The managed object. |
| /// </param> |
| inline ManagedCacheLoaderGeneric( |
| /*Generic::ICacheLoader<Object^, Object^>^ managedptr,*/ Object^ userptr) |
| : /*m_managedptr( managedptr ),*/ m_userptr(userptr) { } |
| |
| /// <summary> |
| /// Static function to create a <c>ManagedCacheLoader</c> using given |
| /// managed assembly path and given factory function. |
| /// </summary> |
| /// <param name="assemblyPath"> |
| /// The path of the managed assembly that contains the <c>ICacheLoader</c> |
| /// factory function. |
| /// </param> |
| /// <param name="factoryFunctionName"> |
| /// The name of the factory function of the managed class for creating |
| /// an object that implements <c>ICacheLoader</c>. |
| /// This should be a static function of the format |
| /// {Namespace}.{Class Name}.{Method Name}. |
| /// </param> |
| /// <exception cref="IllegalArgumentException"> |
| /// If the managed library cannot be loaded or the factory function fails. |
| /// </exception> |
| static apache::geode::client::CacheLoader* create(const char* assemblyPath, |
| const char* factoryFunctionName); |
| |
| virtual ~ManagedCacheLoaderGeneric() { } |
| |
| /// <summary> |
| /// Loads a value. Application writers should implement this |
| /// method to customize the loading of a value. |
| /// </summary> |
| /// <remarks> |
| /// This method is called by the caching service when the requested |
| /// value is not in the cache. Any exception thrown by this method |
| /// is propagated back to and thrown by the invocation of |
| /// <see cref="Apache.Geode.Client.Region.Get" /> that triggered this load. |
| /// </remarks> |
| /// <param name="region">a Region Pointer for which this is called.</param> |
| /// <param name="key">the key for the cacheable</param> |
| /// <param name="aCallbackArgument">any related user data, or null</param> |
| /// <returns> |
| /// the value supplied for this key, or null if no value can be |
| /// supplied. |
| /// If every available loader returns |
| /// a null value, <see cref="Apache.Geode.Client.Region.Get" /> |
| /// will return null. |
| /// </returns> |
| /// <seealso cref="Apache.Geode.Client.Region.Get" /> |
| virtual std::shared_ptr<Cacheable> load(Region& region, |
| const std::shared_ptr<CacheableKey>& key, const std::shared_ptr<Serializable>& aCallbackArgument); |
| |
| /// <summary> |
| /// Called when the region containing this callback is destroyed, when |
| /// the cache is closed. |
| /// </summary> |
| /// <remarks> |
| /// Implementations should clean up any external |
| /// resources, such as database connections. Any runtime exceptions this method |
| /// throws will be logged. |
| /// <para> |
| /// It is possible for this method to be called multiple times on a single |
| /// callback instance, so implementations must be tolerant of this. |
| /// </para> |
| /// </remarks> |
| /// <param name="region">the region pointer</param> |
| /// <seealso cref="Apache.Geode.Client.Cache.Close" /> |
| /// <seealso cref="Apache.Geode.Client.Region.DestroyRegion" /> |
| virtual void close(Region& region); |
| |
| /* |
| /// <summary> |
| /// Returns the wrapped managed object reference. |
| /// </summary> |
| inline Apache::Geode::Client::ICacheLoader^ ptr( ) const |
| { |
| return m_managedptr; |
| } |
| */ |
| |
| inline void setptr(Apache::Geode::Client::ICacheLoaderProxy^ managedptr) |
| { |
| m_managedptr = managedptr; |
| } |
| |
| inline Object^ userptr() const |
| { |
| return m_userptr; |
| } |
| |
| |
| private: |
| |
| /// <summary> |
| /// Using gcroot to hold the managed delegate pointer (since it cannot be stored directly). |
| /// Note: not using auto_gcroot since it will result in 'Dispose' of the ICacheLoader |
| /// to be called which is not what is desired when this object is destroyed. Normally this |
| /// managed object may be created by the user and will be handled automatically by the GC. |
| /// </summary> |
| gcroot<Apache::Geode::Client::ICacheLoaderProxy^> m_managedptr; |
| |
| gcroot<Object^> m_userptr; |
| |
| // Disable the copy and assignment constructors |
| ManagedCacheLoaderGeneric(const ManagedCacheLoaderGeneric&); |
| ManagedCacheLoaderGeneric& operator = (const ManagedCacheLoaderGeneric&); |
| }; |
| |
| } // namespace client |
| } // namespace geode |
| } // namespace apache |