diff options
Diffstat (limited to 'tags/java/sca/2.0-M2/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataTransformationInterceptor.java')
| -rw-r--r-- | tags/java/sca/2.0-M2/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataTransformationInterceptor.java | 264 |
1 files changed, 0 insertions, 264 deletions
diff --git a/tags/java/sca/2.0-M2/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataTransformationInterceptor.java b/tags/java/sca/2.0-M2/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataTransformationInterceptor.java deleted file mode 100644 index 20dcb1b94a..0000000000 --- a/tags/java/sca/2.0-M2/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataTransformationInterceptor.java +++ /dev/null @@ -1,264 +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.InvocationTargetException; -import java.util.HashMap; -import java.util.Map; - -import javax.xml.namespace.QName; - -import org.apache.tuscany.sca.databinding.DataBinding; -import org.apache.tuscany.sca.databinding.Mediator; -import org.apache.tuscany.sca.interfacedef.DataType; -import org.apache.tuscany.sca.interfacedef.FaultExceptionMapper; -import org.apache.tuscany.sca.interfacedef.Operation; -import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl; -import org.apache.tuscany.sca.interfacedef.util.FaultException; -import org.apache.tuscany.sca.interfacedef.util.XMLType; -import org.apache.tuscany.sca.invocation.DataExchangeSemantics; -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.RuntimeWire; -import org.oasisopen.sca.ServiceRuntimeException; - -/** - * An interceptor to transform data across databindings on the wire - * - * @version $Rev$ $Date$ - */ -public class DataTransformationInterceptor implements Interceptor, DataExchangeSemantics { - private Invoker next; - - private Operation sourceOperation; - - private Operation targetOperation; - private RuntimeWire wire; - private Mediator mediator; - private FaultExceptionMapper faultExceptionMapper; - - public DataTransformationInterceptor(RuntimeWire wire, - Operation sourceOperation, - Operation targetOperation, - Mediator mediator, - FaultExceptionMapper faultExceptionMapper) { - super(); - this.sourceOperation = sourceOperation; - this.targetOperation = targetOperation; - this.mediator = mediator; - this.wire = wire; - this.faultExceptionMapper = faultExceptionMapper; - } - - public Invoker getNext() { - return next; - } - - public Message invoke(Message msg) { - Object input = transform(msg.getBody(), sourceOperation.getInputType(), targetOperation.getInputType(), false); - msg.setBody(input); - Message resultMsg = next.invoke(msg); - Object result = resultMsg.getBody(); - if (sourceOperation.isNonBlocking()) { - // Not to reset the message body - return resultMsg; - } - - // FIXME: Should we fix the Operation model so that getOutputType - // returns DataType<DataType<T>>? - DataType<DataType> targetType = - new DataTypeImpl<DataType>(DataBinding.IDL_OUTPUT, Object.class, targetOperation.getOutputType()); - - DataType<DataType> sourceType = - new DataTypeImpl<DataType>(DataBinding.IDL_OUTPUT, Object.class, sourceOperation.getOutputType()); - - if (resultMsg.isFault()) { - - // FIXME: We need to figure out what fault type it is and then - // transform it - // back the source fault type - // throw new InvocationRuntimeException((Throwable) result); - - if ((result instanceof Exception) && !(result instanceof RuntimeException)) { - // FIXME: How to match fault data to a fault type for the - // operation? - - // If the result is from an InvocationTargetException look at - // the actual cause. - if (result instanceof InvocationTargetException) { - result = ((InvocationTargetException)result).getCause(); - } - DataType targetDataType = null; - for (DataType exType : targetOperation.getFaultTypes()) { - if (((Class)exType.getPhysical()).isInstance(result)) { - if (result instanceof FaultException) { - DataType faultType = (DataType)exType.getLogical(); - if (((FaultException)result).isMatchingType(faultType.getLogical())) { - targetDataType = exType; - break; - } - } else { - targetDataType = exType; - break; - } - } - } - - /* - if (targetDataType == null) { - // Not a business exception - return resultMsg; - } - */ - - DataType targetFaultType = getFaultType(targetDataType); - if (targetFaultType == null) { - // No matching fault type, it's a system exception - Throwable cause = (Throwable) result; - throw new ServiceRuntimeException(cause); - } - - // FIXME: How to match a source fault type to a target fault - // type? - DataType sourceDataType = null; - DataType sourceFaultType = null; - for (DataType exType : sourceOperation.getFaultTypes()) { - DataType faultType = getFaultType(exType); - // Match by the QName (XSD element) of the fault type - if (faultType != null && typesMatch(targetFaultType.getLogical(), faultType.getLogical())) { - sourceDataType = exType; - sourceFaultType = faultType; - break; - } - } - - if (sourceFaultType == null) { - // No matching fault type, it's a system exception - Throwable cause = (Throwable) result; - throw new ServiceRuntimeException(cause); - } - - Object newResult = - transformException(result, targetDataType, sourceDataType, targetFaultType, sourceFaultType); - if (newResult != result) { - resultMsg.setFaultBody(newResult); - } - } - - } else { - assert !(result instanceof Throwable) : "Expected messages that are not throwable " + result; - - Object newResult = transform(result, targetType, sourceType, true); - if (newResult != result) { - resultMsg.setBody(newResult); - } - } - - return resultMsg; - } - - private Object transform(Object source, DataType sourceType, DataType targetType, boolean isResponse) { - if (sourceType == targetType || (sourceType != null && sourceType.equals(targetType))) { - return source; - } - Map<String, Object> metadata = new HashMap<String, Object>(); - metadata.put("source.operation", isResponse ? targetOperation : sourceOperation); - metadata.put("target.operation", isResponse ? sourceOperation : targetOperation); - metadata.put("wire", wire); - return mediator.mediate(source, sourceType, targetType, metadata); - } - - private DataType getFaultType(DataType exceptionType) { - return exceptionType == null ? null : (DataType)exceptionType.getLogical(); - } - - private boolean typesMatch(Object first, Object second) { - if (first.equals(second)) { - return true; - } - if (first instanceof XMLType && second instanceof XMLType) { - XMLType t1 = (XMLType)first; - XMLType t2 = (XMLType)second; - // TUSCANY-2113, we should compare element names only - return matches(t1.getElementName(), t2.getElementName()); - } - return false; - } - - /** - * @param qn1 - * @param qn2 - */ - private boolean matches(QName qn1, QName qn2) { - if (qn1 == qn2) { - return true; - } - if (qn1 == null || qn2 == null) { - return false; - } - String ns1 = qn1.getNamespaceURI(); - String ns2 = qn2.getNamespaceURI(); - String e1 = qn1.getLocalPart(); - String e2 = qn2.getLocalPart(); - if (e1.equals(e2) && (ns1.equals(ns2) || ns1.equals(ns2 + "/") || ns2.equals(ns1 + "/"))) { - // Tolerating the trailing / which is required by JAX-WS java package --> xml ns mapping - return true; - } - return false; - } - - /** - * @param source The source exception - * @param sourceExType The data type for the source exception - * @param targetExType The data type for the target exception - * @param sourceType The fault type for the source - * @param targetType The fault type for the target - * @return - */ - private Object transformException(Object source, - DataType sourceExType, - DataType targetExType, - DataType sourceType, - DataType targetType) { - if (sourceType == targetType || (sourceType != null && sourceType.equals(targetType))) { - return source; - } - Map<String, Object> metadata = new HashMap<String, Object>(); - metadata.put("source.operation", targetOperation); - metadata.put("target.operation", sourceOperation); - metadata.put("wire", wire); - DataType<DataType> eSourceDataType = - new DataTypeImpl<DataType>("idl:fault", sourceExType.getPhysical(), sourceType); - DataType<DataType> eTargetDataType = - new DataTypeImpl<DataType>("idl:fault", targetExType.getPhysical(), targetType); - - return mediator.mediate(source, eSourceDataType, eTargetDataType, metadata); - } - - public void setNext(Invoker next) { - this.next = next; - } - - public boolean allowsPassByReference() { - return true; - } - -} |