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Diffstat (limited to 'sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/tuscany/sca/core/ComponentServiceWrapper.h')
| -rw-r--r-- | sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/tuscany/sca/core/ComponentServiceWrapper.h | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/tuscany/sca/core/ComponentServiceWrapper.h b/sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/tuscany/sca/core/ComponentServiceWrapper.h new file mode 100644 index 0000000000..3a5e990bf0 --- /dev/null +++ b/sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/tuscany/sca/core/ComponentServiceWrapper.h @@ -0,0 +1,156 @@ +/* + * + * Copyright 2005 The Apache Software Foundation or its licensors, as applicable. + * + * Licensed 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. + */ + +/* $Rev$ $Date: 2005/12/22 11:33:21 $ */ + +#ifndef tuscany_sca_core_componentservicewrapper_h +#define tuscany_sca_core_componentservicewrapper_h + +#include "osoa/sca/export.h" +#include "tuscany/sca/core/ServiceWrapper.h" +#include "tuscany/sca/model/Component.h" +#include "tuscany/sca/core/Operation.h" +#include "tuscany/sca/model/CPPInterface.h" +#include "tuscany/sca/util/Library.h" + +using namespace tuscany::sca::model; + +namespace tuscany +{ + namespace sca + { + /** + * Wraps the service on a component implementation. + * This abstract class is extended by generated code which provides + * the implementation of some of the methods. + * An instance of this class wraps the actual component implementation which + * has been written by a developer of an SCA application. + */ + class ComponentServiceWrapper : public ServiceWrapper + { + public: + /** + * Factory method to create a new ComponentServiceWrapper for a given target + * service. This method will provide all the loading of dlls required to + * create the target component. + * @param target The service on the component for which this wrapper is to be + * created. + * @return A wrapper that references the given target. + */ + static SCA_API ComponentServiceWrapper* createServiceWrapper(Service* target); + + /** + * Constructor. + * @param target The component service to which this wrapper refers. + */ + SCA_API ComponentServiceWrapper(Service* target); + + /** + * Destructor. + */ + SCA_API virtual ~ComponentServiceWrapper(); + + /** + * All business method calls to the target component go through the invoke method. + * @param operation The details of the method, paramaters and return value for the + * business method to be called on the target component. + */ + SCA_API virtual void invoke(Operation& operation); + + /** + * Return the loaded shared library for the target component. + */ + Library* getLibrary() {return wrapperLibrary;} + protected: + /** + * Delegated method to invoke the correct method on the target component. + * Implemented by the subtype. + */ + SCA_API virtual void invokeService(Operation& operation) = 0; + + /** + * Delegated method to create a new component implementation. + * Implemented by the subtype. + * @return A pointer to an instance of the component implementation class. + */ + SCA_API virtual void* newImplementation() = 0; + + /** + * Delegated method to delete the current instance of the component + * implementation. + * Implemented by the subtype. + */ + SCA_API virtual void deleteImplementation() = 0; + + /** + * Return the current instance of the component implementation. + * @return A pointer to an instance of the component implementation class. + */ + SCA_API virtual void* getImplementation(); + + /** + * Indicates that the current instance of the component implementation + * has been finished with. + * Will call ComponentServiceWrapper#deleteImplementation if the + * implementation is stateless (so that a new instance is returned + * for each call). + */ + SCA_API virtual void releaseImplementation(); + + private: + /** + * Holds an implementation instance if the scope is set to module. + */ + static void* staticImpl; + + /** + * The component to which this wrapper refers. + */ + Component* component; + + /** + * The service on the component to which this wrapper refers. + */ + Service* service; + + /** + * A pointer to the interface which the service exposes. + */ + CPPInterface* interf; + + /** + * Set to true if the service is remotable. + */ + bool remotable; + + /** + * Pointer to the loaded library which contains the component + * implementation. + */ + Library* wrapperLibrary; + + /** + * Set the loaded library which contains the component + * implementation. + * @param lib The library. + */ + void setLibrary(Library* lib); + }; + } // End namespace sca +} // End namespace tuscany + +#endif // tuscany_sca_core_componentservicewrapper_h |