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Diffstat (limited to 'sandbox/ant/sca/branches/2.0-M2/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/PassByValueInterceptor.java')
| -rw-r--r-- | sandbox/ant/sca/branches/2.0-M2/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/PassByValueInterceptor.java | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/sandbox/ant/sca/branches/2.0-M2/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/PassByValueInterceptor.java b/sandbox/ant/sca/branches/2.0-M2/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/PassByValueInterceptor.java deleted file mode 100644 index 1ff8d86f45..0000000000 --- a/sandbox/ant/sca/branches/2.0-M2/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/PassByValueInterceptor.java +++ /dev/null @@ -1,268 +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.io.Serializable; -import java.lang.reflect.Array; -import java.lang.reflect.InvocationTargetException; -import java.lang.reflect.Method; -import java.net.URI; -import java.util.IdentityHashMap; -import java.util.List; -import java.util.Map; -import java.util.UUID; - -import javax.xml.namespace.QName; - -import org.apache.tuscany.sca.databinding.DataBinding; -import org.apache.tuscany.sca.databinding.DataBindingExtensionPoint; -import org.apache.tuscany.sca.databinding.javabeans.JavaBeansDataBinding; -import org.apache.tuscany.sca.databinding.jaxb.JAXBDataBinding; -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.XMLType; -import org.apache.tuscany.sca.invocation.Interceptor; -import org.apache.tuscany.sca.invocation.InvocationChain; -import org.apache.tuscany.sca.invocation.Invoker; -import org.apache.tuscany.sca.invocation.Message; -import org.oasisopen.sca.ServiceRuntimeException; - -/** - * Implementation of an interceptor that enforces pass-by-value semantics - * on operation invocations by copying the operation input and output data. - * - * @version $Rev$ $Date$ - */ -public class PassByValueInterceptor implements Interceptor { - - private DataBindingExtensionPoint dataBindings; - private FaultExceptionMapper faultExceptionMapper; - - private DataBinding[] inputDataBindings; - private DataBinding outputDataBinding; - private DataBinding javaBeanDataBinding; - private DataBinding jaxbDataBinding; - private Operation operation; - private Invoker nextInvoker; - private InvocationChain chain; - - /** - * Constructs a new PassByValueInterceptor. - * @param dataBindings databinding extension point - * @param operation the intercepted operation - */ - public PassByValueInterceptor(DataBindingExtensionPoint dataBindings, - FaultExceptionMapper faultExceptionMapper, - InvocationChain chain, - Operation operation) { - this.chain = chain; - this.operation = operation; - - // Cache data bindings to use - this.dataBindings = dataBindings; - this.faultExceptionMapper = faultExceptionMapper; - - jaxbDataBinding = dataBindings.getDataBinding(JAXBDataBinding.NAME); - javaBeanDataBinding = dataBindings.getDataBinding(JavaBeansDataBinding.NAME); - - // Determine the input databindings - if (operation.getInputType() != null) { - List<DataType> inputTypes = operation.getInputType().getLogical(); - inputDataBindings = new DataBinding[inputTypes.size()]; - int i = 0; - for (DataType inputType : inputTypes) { - String id = inputType.getDataBinding(); - inputDataBindings[i++] = dataBindings.getDataBinding(id); - } - } - - // Determine the output databinding - if (operation.getOutputType() != null) { - String id = operation.getOutputType().getDataBinding(); - outputDataBinding = dataBindings.getDataBinding(id); - } - } - - public Message invoke(Message msg) { - if (chain.allowsPassByReference()) { - return nextInvoker.invoke(msg); - } - - msg.setBody(copy((Object[])msg.getBody(), inputDataBindings, operation.getInputType().getLogical())); - - Message resultMsg = nextInvoker.invoke(msg); - - if (!msg.isFault() && operation.getOutputType() != null) { - resultMsg.setBody(copy(resultMsg.getBody(), outputDataBinding, operation.getOutputType())); - } - - if (msg.isFault()) { - msg.setFaultBody(copyFault(msg.getBody())); - } - return resultMsg; - } - - private Object copyFault(Object fault) { - if (faultExceptionMapper == null) { - return fault; - } - for (DataType et : operation.getFaultTypes()) { - if (et.getPhysical().isInstance(fault)) { - Throwable ex = (Throwable)fault; - DataType<DataType> exType = - new DataTypeImpl<DataType>(ex.getClass(), new DataTypeImpl<XMLType>(ex.getClass(), XMLType.UNKNOWN)); - faultExceptionMapper.introspectFaultDataType(exType, operation, false); - DataType faultType = exType.getLogical(); - Object faultInfo = faultExceptionMapper.getFaultInfo(ex, faultType.getPhysical(), operation); - faultInfo = copy(faultInfo, dataBindings.getDataBinding(faultType.getDataBinding()), faultType); - fault = faultExceptionMapper.wrapFaultInfo(exType, ex.getMessage(), faultInfo, ex.getCause(), operation); - return fault; - } - } - return fault; - } - - /** - * Copy an array of data objects passed to an operation - * @param data array of objects to copy - * @return the copy - */ - private Object[] copy(Object[] data, DataBinding[] dataBindings, List<DataType> dataTypes) { - if (data == null) { - return null; - } - Object[] copy = new Object[data.length]; - Map<Object, Object> map = new IdentityHashMap<Object, Object>(); - for (int i = 0; i < data.length; i++) { - Object arg = data[i]; - if (arg == null) { - copy[i] = null; - } else { - Object copiedArg = map.get(arg); - if (copiedArg != null) { - copy[i] = copiedArg; - } else { - copiedArg = copy(arg, dataBindings[i], dataTypes.get(i)); - map.put(arg, copiedArg); - copy[i] = copiedArg; - } - } - } - return copy; - } - - /** - * Copy data using the specified databinding. - * @param data input data - * @param dataBinding databinding to use - * @param dataType TODO - * @return a copy of the data - */ - private Object copy(Object data, DataBinding dataBinding, DataType dataType) { - if (data == null) { - return null; - } - Class<?> clazz = data.getClass(); - if (String.class == clazz || clazz.isPrimitive() - || Number.class.isAssignableFrom(clazz) - || Boolean.class.isAssignableFrom(clazz) - || Character.class.isAssignableFrom(clazz) - || Byte.class.isAssignableFrom(clazz) - || URI.class == clazz - || UUID.class == clazz - || QName.class == clazz) { - // Immutable classes - return data; - } - // If no databinding was specified, introspect the given arg to - // determine its databinding - if (dataBinding == null) { - dataType = dataBindings.introspectType(data, operation); - if (dataType != null) { - String db = dataType.getDataBinding(); - dataBinding = dataBindings.getDataBinding(db); - if (dataBinding == null && db != null) { - return data; - } - } - if (dataBinding == null) { - - // Default to the JavaBean databinding - dataBinding = javaBeanDataBinding; - } - } - - // Use the JAXB databinding to copy non-Serializable data - if (dataBinding == javaBeanDataBinding) { - - // If the input data is an array containing non Serializable elements - // use JAXB - clazz = data.getClass(); - if (clazz.isArray()) { - if (Array.getLength(data) != 0) { - Object element = Array.get(data, 0); - if (element != null && !(element instanceof Serializable)) { - dataBinding = jaxbDataBinding; - } - } - } else { - - // If the input data is not Serializable use JAXB - if (!(data instanceof Serializable)) { - dataBinding = jaxbDataBinding; - } - - if (data instanceof Cloneable) { - Method clone; - try { - clone = data.getClass().getMethod("clone", (Class[])null); - try { - return clone.invoke(data, (Object[])null); - } catch (InvocationTargetException e) { - if (e.getTargetException() instanceof CloneNotSupportedException) { - // Ignore - } else { - throw new ServiceRuntimeException(e); - } - } catch (Exception e) { - throw new ServiceRuntimeException(e); - } - } catch (NoSuchMethodException e) { - // Ignore it - } - } - } - } - - Object copy = dataBinding.copy(data, dataType, operation); - return copy; - } - - public Invoker getNext() { - return nextInvoker; - } - - public void setNext(Invoker next) { - this.nextInvoker = next; - } - -} |