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Diffstat (limited to '')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta1-RC2/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataTransformationInterceptor.java | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta1-RC2/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataTransformationInterceptor.java b/sca-java-2.x/tags/2.0-Beta1-RC2/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataTransformationInterceptor.java deleted file mode 100644 index 7bf9833d04..0000000000 --- a/sca-java-2.x/tags/2.0-Beta1-RC2/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataTransformationInterceptor.java +++ /dev/null @@ -1,148 +0,0 @@ -/* - * 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.lang.reflect.Method; -import java.lang.reflect.Type; -import java.util.HashMap; -import java.util.List; -import java.util.Map; - -import org.apache.tuscany.sca.databinding.Mediator; -import org.apache.tuscany.sca.interfacedef.DataType; -import org.apache.tuscany.sca.interfacedef.Operation; -import org.apache.tuscany.sca.interfacedef.java.JavaOperation; -import org.apache.tuscany.sca.invocation.Interceptor; -import org.apache.tuscany.sca.invocation.Invoker; -import org.apache.tuscany.sca.invocation.Message; -import org.apache.tuscany.sca.runtime.Invocable; - -/** - * An interceptor to transform data across databindings on the wire - * - * @version $Rev$ $Date$ - */ -public class DataTransformationInterceptor implements Interceptor { - private Invoker next; - - private Operation sourceOperation; - - private Operation targetOperation; - private Invocable invocable; - private Mediator mediator; - - public DataTransformationInterceptor(Invocable invocable, - Operation sourceOperation, - Operation targetOperation, - Mediator mediator) { - super(); - this.sourceOperation = sourceOperation; - this.targetOperation = targetOperation; - if ( sourceOperation instanceof JavaOperation ) { - JavaOperation javaOp = (JavaOperation) sourceOperation; - Method sourceMethod = javaOp.getJavaMethod(); - } - // Holder pattern. In order to perform data mediation on Holder return types, it is - // necessary to set up a data transformation on the Holder<T> class T. on return. - DataType<DataType> returnTargetType = getFirstHolderType( sourceOperation.getInputType() ); - if ( returnTargetType != null ) { - this.sourceOperation.setOutputType(returnTargetType); - } - returnTargetType = getFirstHolderType( targetOperation.getInputType() ); - if ( returnTargetType != null ) { - this.targetOperation.setOutputType(returnTargetType); - } - - this.mediator = mediator; - this.invocable = invocable; - } - - public Invoker getNext() { - return next; - } - - public Message invoke(Message msg) { - Map<String, Object> metadata = new HashMap<String, Object>(); - metadata.put(Invocable.class.getName(), invocable); - Object input = mediator.mediateInput(msg.getBody(), sourceOperation, targetOperation, metadata); - msg.setBody(input); - Message resultMsg = next.invoke(msg); - - if (sourceOperation.isNonBlocking()) { - // Not to reset the message body - return resultMsg; - } - - Object result = resultMsg.getBody(); - - if (resultMsg.isFault()) { - Object transformedFault = null; - if ((result instanceof Exception) && !(result instanceof RuntimeException)) { - transformedFault = mediator.mediateFault(result, sourceOperation, targetOperation, metadata); - if (transformedFault != result) { - resultMsg.setFaultBody(transformedFault); - } - } - // - // Leave it to another layer to actually throw the Exception which constitutes - // the message body. We don't throw it here. - // - } else { - assert !(result instanceof Throwable) : "Expected messages that are not throwable " + result; - Object newResult = mediator.mediateOutput(result, sourceOperation, targetOperation, metadata); - resultMsg.setBody(newResult); - } - - return resultMsg; - } - - public void setNext(Invoker next) { - this.next = next; - } - - /** - * Returns return type for first Holder in input list. - * Returns null if the inputs do not contain a Holder. - */ - protected static DataType<DataType> getFirstHolderType( DataType<List<DataType>> inputTypes ) { - if (inputTypes != null) { - List<DataType> logicalType = inputTypes.getLogical(); - if (logicalType != null) { - for (int i = 0; i < logicalType.size(); i++) { - DataType dataType = logicalType.get(i); - if (isHolder(dataType.getGenericType())) { - // Fix up output from void to returned data type. - // System.out.println("DataTransformationInterceptor.<> source input[" + i + "] is Holder, logicalType=" + dataType); - return dataType; - } - } - } - } - return null; - } - - protected static boolean isHolder( Type type ) { - String typeString = type.toString(); - if ( typeString.startsWith( "javax.xml.ws.Holder" ) ) { - return true; - } - return false; - } -} |