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Diffstat (limited to 'sca-java-2.x/tags/2.0-Beta4-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataBindingRuntimeWireProcessor.java')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta4-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataBindingRuntimeWireProcessor.java | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta4-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataBindingRuntimeWireProcessor.java b/sca-java-2.x/tags/2.0-Beta4-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataBindingRuntimeWireProcessor.java new file mode 100644 index 0000000000..29a4551a5a --- /dev/null +++ b/sca-java-2.x/tags/2.0-Beta4-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataBindingRuntimeWireProcessor.java @@ -0,0 +1,123 @@ +/* + * 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. + */ + +package org.apache.tuscany.sca.core.databinding.wire; + +import java.util.List; + +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.UtilityExtensionPoint; +import org.apache.tuscany.sca.databinding.Mediator; +import org.apache.tuscany.sca.databinding.util.OperationDataBindingHelper; +import org.apache.tuscany.sca.interfacedef.InterfaceContract; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.invocation.Interceptor; +import org.apache.tuscany.sca.invocation.InvocationChain; +import org.apache.tuscany.sca.invocation.Phase; +import org.apache.tuscany.sca.runtime.RuntimeEndpoint; +import org.apache.tuscany.sca.runtime.RuntimeEndpointReference; +import org.apache.tuscany.sca.runtime.RuntimeWireProcessor; + +/** + * This processor is responsible to add an interceptor to invocation chain if + * the source and target operations have different databinding requirements + * + * @version $Rev$ $Date$ + */ +public class DataBindingRuntimeWireProcessor implements RuntimeWireProcessor { + private Mediator mediator; + + public DataBindingRuntimeWireProcessor(ExtensionPointRegistry registry) { + super(); + this.mediator = registry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(Mediator.class); + } + + public void process(RuntimeEndpoint endpoint) { + InterfaceContract sourceContract = endpoint.getBindingInterfaceContract(); + InterfaceContract targetContract = endpoint.getComponentTypeServiceInterfaceContract(); + if (targetContract == null) { + targetContract = sourceContract; + } + + if (!sourceContract.getInterface().isRemotable()) { + return; + } + List<InvocationChain> chains = endpoint.getInvocationChains(); + for (InvocationChain chain : chains) { + Operation sourceOperation = chain.getSourceOperation(); + Operation targetOperation = chain.getTargetOperation(); + + Interceptor interceptor = null; + if (isTransformationRequired(sourceContract, sourceOperation, targetContract, targetOperation)) { + // Add the interceptor to the source side because multiple + // references can be wired to the same service + interceptor = new DataTransformationInterceptor(endpoint, sourceOperation, targetOperation, mediator); + } + if (interceptor != null) { + String phase = Phase.SERVICE_INTERFACE; + chain.addInterceptor(phase, interceptor); + } + } + + } + + public void process(RuntimeEndpointReference endpointReference) { + InterfaceContract sourceContract = endpointReference.getComponentTypeReferenceInterfaceContract(); + InterfaceContract targetContract = endpointReference.getBindingInterfaceContract(); + if (targetContract == null) { + targetContract = sourceContract; + } + + if (sourceContract == null || !sourceContract.getInterface().isRemotable()) { + return; + } + List<InvocationChain> chains = endpointReference.getInvocationChains(); + for (InvocationChain chain : chains) { + Operation sourceOperation = chain.getSourceOperation(); + Operation targetOperation = chain.getTargetOperation(); + + Interceptor interceptor = null; + if (isTransformationRequired(sourceContract, sourceOperation, targetContract, targetOperation)) { + // Add the interceptor to the source side because multiple + // references can be wired to the same service + interceptor = new DataTransformationInterceptor(endpointReference, sourceOperation, targetOperation, mediator); + } + if (interceptor != null) { + String phase = Phase.REFERENCE_INTERFACE; + chain.addInterceptor(phase, interceptor); + } + } + + } + + + private boolean isTransformationRequired(InterfaceContract sourceContract, + Operation sourceOperation, + InterfaceContract targetContract, + Operation targetOperation) { + if (targetContract == null) { + targetContract = sourceContract; + } + if (sourceContract == targetContract) { + return false; + } + return OperationDataBindingHelper.isTransformationRequired(sourceOperation, targetOperation); + } + +} |