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Diffstat (limited to 'sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/osoa/sca/ComponentContextImpl.cpp')
| -rw-r--r-- | sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/osoa/sca/ComponentContextImpl.cpp | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/osoa/sca/ComponentContextImpl.cpp b/sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/osoa/sca/ComponentContextImpl.cpp new file mode 100644 index 0000000000..436e44d5e1 --- /dev/null +++ b/sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/osoa/sca/ComponentContextImpl.cpp @@ -0,0 +1,270 @@ +/* + * + * 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 $ */ + +#include "tuscany/sca/util/Logging.h" +#include "tuscany/sca/util/Exceptions.h" +#include "osoa/sca/ComponentContextImpl.h" +#include "tuscany/sca/model/WireTarget.h" +#include "tuscany/sca/core/ComponentServiceWrapper.h" +#include "tuscany/sca/core/ExternalServiceWrapper.h" +#include "tuscany/sca/model/CPPImplementation.h" +#include "tuscany/sca/model/Module.h" + +using namespace tuscany::sca; +using namespace tuscany::sca::model; + +namespace osoa +{ + namespace sca + { + // =========== + // Constructor + // =========== + ComponentContextImpl::ComponentContextImpl(Component* comp) + : component(comp) + { + LOGENTRY(1, "ComponentContextImpl::constructor"); + LOGEXIT(1, "ComponentContextImpl::constructor"); + } + + // ========== + // Destructor + // ========== + ComponentContextImpl::~ComponentContextImpl() + { + // -------------------------------------------- + // Delete the proxies served up by this context + // -------------------------------------------- + for (PROXIES::iterator iter = proxies.begin(); iter != proxies.end(); iter++) + { + delete (ServiceProxy*)*iter; + } + } + + + // ========================================================================== + // getServices: return a list of Proxies for services wired to this reference + // ========================================================================== + ServiceList ComponentContextImpl::getServices(const char* referenceName) + { + LOGENTRY(1, "ComponentContextImpl::getServices"); + + string message; + + // -------------------------------------------------------------- + // locate reference in the current component and determine target + // -------------------------------------------------------------- + ServiceReference* serviceReference = component->findReference(referenceName); + if (!serviceReference) + { + message = "Reference not defined: "; + message = message + referenceName; + throw ServiceNotFoundException(message.c_str()); + } + + // Get the target services from the ServiceReference + const ServiceReference::TARGETS& targets = serviceReference->getTargets(); + + // -------------------- + // Validate the request + // -------------------- + switch (serviceReference->getMultiplicity()) + { + case ServiceReference::ONE_MANY: + case ServiceReference::ONE_ONE: + { + if (targets.size() == 0) + { + message = "Reference "; + message = message + referenceName + " not wired"; + throw ServiceNotFoundException(message.c_str()); + } + } + default: + { + } + } // end switch + + // ------------------------------ + // Create a proxy for each target + // ------------------------------ + ServiceList services(targets.size()); + for (ServiceReference::TARGETS::const_iterator iter = targets.begin(); + iter!=targets.end(); + iter++) + { + services.addService(getServiceProxy(serviceReference, *iter)); + } + + return services; + + } // End getServices() + + + // =================================================================== + // getService: return a Proxy for the services wired to this reference + // =================================================================== + void* ComponentContextImpl::getService(const char* referenceName) + { + LOGENTRY(1, "ComponentContextImpl::getService"); + + string message; + + // -------------------------------------------------------------- + // locate reference in the current component and determine target + // -------------------------------------------------------------- + ServiceReference* serviceReference = component->findReference(referenceName); + if (!serviceReference) + { + message = "Reference not defined: "; + message = message + referenceName; + throw ServiceNotFoundException(message.c_str()); + } + + // Get the target service from the ServiceReference + const ServiceReference::TARGETS& targets = serviceReference->getTargets(); + + // -------------------- + // Validate the request + // -------------------- + switch (serviceReference->getMultiplicity()) + { + case ServiceReference::ZERO_MANY: + case ServiceReference::ONE_MANY: + { + message = "getService() called for reference with multiplicity >1 :"; + message = message + referenceName; + throw ServiceNotFoundException(message.c_str()); + } + case ServiceReference::ONE_ONE: + { + if (targets.size() == 0) + { + message = "Reference "; + message = message + referenceName + " not wired"; + throw ServiceNotFoundException(message.c_str()); + } + } + default: + { + } + } // end switch + + // Return the proxy + return getServiceProxy(serviceReference, *targets.begin()); + + } // End getService() + + + // ================================================================== + // getServiceProxy: Create and return an instance of the ServiceProxy + // ================================================================== + void* ComponentContextImpl::getServiceProxy( + ServiceReference* serviceReference, + WireTarget* target) + { + // ----------------------------------- + // Get a ServiceWrapper for the target + // ----------------------------------- + ServiceWrapper* serviceWrapper = getServiceWrapper(target); + + // ------------------------------ + // Get a Proxy for this reference + // ------------------------------ + try + { + ServiceProxy* serviceProxy = new ServiceProxy(component, serviceReference->getName(), serviceWrapper); + void* service = serviceProxy->getProxy(); + // service MUST be set here or an exception will have been thrown + proxies.push_back(serviceProxy); + return service; + } + catch (ServiceRuntimeException&) + { + delete serviceWrapper; + throw ; + } + } + + + // ====================================================================== + // getServiceWrapper: Create and return an instance of the ServiceWrapper + // ====================================================================== + ServiceWrapper* ComponentContextImpl::getServiceWrapper(WireTarget* target) + { + // ------------------------- + // Determine type of Service + // ------------------------- + switch (target->getServiceType()) + { + case WireTarget::ExternalServiceType: + { + // ---------------- + // External Service + // ---------------- + return ExternalServiceWrapper::createServiceWrapper((ExternalService*)target); + } + + case WireTarget::ComponentServiceType: + { + // ----------------- + // Component Service + // ----------------- + return ComponentServiceWrapper::createServiceWrapper((Service*)target); + } + + default: + { + string message = "Undefined wire target type for : "; + message = message + target->getName(); + throw ServiceNotFoundException(message.c_str()); + } + } // end switch + } + + + + // ============================================== + // getProperties: return the component properties + // ============================================== + DataObjectPtr ComponentContextImpl::getProperties() + { + LOGENTRY(1, "ComponentContextImpl::getProperties"); + DataObjectPtr properties = component->getProperties(); + + LOGEXIT(1, "ComponentContextImpl::getProperties"); + return properties; + } + + // ============================================== + // getDataFactory: return the data factory for the module in which + // this component resides + // ============================================== + DataFactoryPtr ComponentContextImpl::getDataFactory() + { + LOGENTRY(1, "ComponentContextImpl::getProperties"); + DataFactoryPtr dataFactory = component->getModule()->getDataFactory(); + + LOGEXIT(1, "ComponentContextImpl::getDataFactory"); + return dataFactory; + } + + + } // End namespace sca +} // End namespace osoa |