diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0-Beta2-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Output2OutputTransformer.java')
| -rw-r--r-- | sca-java-2.x/tags/2.0-Beta2-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Output2OutputTransformer.java | 312 |
1 files changed, 0 insertions, 312 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta2-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Output2OutputTransformer.java b/sca-java-2.x/tags/2.0-Beta2-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Output2OutputTransformer.java deleted file mode 100644 index ad37eaccb8..0000000000 --- a/sca-java-2.x/tags/2.0-Beta2-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Output2OutputTransformer.java +++ /dev/null @@ -1,312 +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.transformers; - -import java.util.ArrayList; -import java.util.List; - -import org.apache.tuscany.sca.core.ExtensionPointRegistry; -import org.apache.tuscany.sca.core.UtilityExtensionPoint; -import org.apache.tuscany.sca.databinding.BaseTransformer; -import org.apache.tuscany.sca.databinding.DataBinding; -import org.apache.tuscany.sca.databinding.Mediator; -import org.apache.tuscany.sca.databinding.PullTransformer; -import org.apache.tuscany.sca.databinding.TransformationContext; -import org.apache.tuscany.sca.databinding.TransformationException; -import org.apache.tuscany.sca.databinding.WrapperHandler; -import org.apache.tuscany.sca.interfacedef.DataType; -import org.apache.tuscany.sca.interfacedef.Operation; -import static org.apache.tuscany.sca.interfacedef.Operation.IDL_OUTPUT; -import org.apache.tuscany.sca.interfacedef.util.ElementInfo; -import org.apache.tuscany.sca.interfacedef.util.WrapperInfo; -import org.apache.tuscany.sca.interfacedef.util.XMLType; - -/** - * This is a special transformer to transform the output from one IDL to the - * other one - * - * @version $Rev$ $Date$ - */ -public class Output2OutputTransformer extends BaseTransformer<Object, Object> implements - PullTransformer<Object, Object> { - - protected Mediator mediator; - - /** - * @param wrapperHandler - */ - public Output2OutputTransformer(ExtensionPointRegistry registry) { - super(); - this.mediator = registry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(Mediator.class); - } - - @Override - public String getSourceDataBinding() { - return IDL_OUTPUT; - } - - @Override - public String getTargetDataBinding() { - return IDL_OUTPUT; - } - - /** - * @see org.apache.tuscany.sca.databinding.BaseTransformer#getSourceType() - */ - @Override - protected Class<Object> getSourceType() { - return Object.class; - } - - /** - * @see org.apache.tuscany.sca.databinding.BaseTransformer#getTargetType() - */ - @Override - protected Class<Object> getTargetType() { - return Object.class; - } - - /** - * @see org.apache.tuscany.sca.databinding.Transformer#getWeight() - */ - @Override - public int getWeight() { - return 10; - } - - private String getDataBinding(Operation operation) { - WrapperInfo wrapper = operation.getWrapper(); - if (wrapper != null) { - return wrapper.getDataBinding(); - } else { - return null; - } - } - - private WrapperHandler getWrapperHandler(String dataBindingId, boolean required) { - WrapperHandler wrapperHandler = null; - if (dataBindingId != null) { - DataBinding dataBinding = mediator.getDataBindings().getDataBinding(dataBindingId); - wrapperHandler = dataBinding == null ? null : dataBinding.getWrapperHandler(); - } - if (wrapperHandler == null && required) { - throw new TransformationException("No wrapper handler is provided for databinding: " + dataBindingId); - } - return wrapperHandler; - } - - /** - * Match the structure of the wrapper element. If it matches, then we can do - * wrapper to wrapper transformation. Otherwise, we do child to child. - * @param w1 - * @param w2 - * @return - */ - private boolean matches(WrapperInfo w1, WrapperInfo w2) { - if (w1 == null || w2 == null) { - return false; - } - if (!w1.getOutputWrapperElement().equals(w2.getOutputWrapperElement())) { - return false; - } - - // Compare the child elements - List<ElementInfo> list1 = w1.getOutputChildElements(); - List<ElementInfo> list2 = w2.getOutputChildElements(); - if (list1.size() != list2.size()) { - return false; - } - // FXIME: [rfeng] At this point, the J2W generates local elments under the namespace - // of the interface instead of "". We only compare the local parts only to work around - // the namespace mismatch - for (int i = 0; i < list1.size(); i++) { - String n1 = list1.get(i).getQName().getLocalPart(); - String n2 = list2.get(i).getQName().getLocalPart(); - if (!n1.equals(n2)) { - return false; - } - } - return true; - } - - @SuppressWarnings("unchecked") - public Object transform(Object response, TransformationContext context) { - try { - - DataType<List<DataType>> sourceType = context.getSourceDataType(); - Operation sourceOp = context.getSourceOperation(); - boolean sourceWrapped = sourceOp != null && sourceOp.isWrapperStyle() && sourceOp.getWrapper() != null; - boolean sourceBare = sourceOp != null && !sourceOp.isWrapperStyle() && sourceOp.getWrapper() == null; - - WrapperHandler sourceWrapperHandler = null; - String sourceDataBinding = getDataBinding(sourceOp); - sourceWrapperHandler = getWrapperHandler(sourceDataBinding, sourceWrapped); - - DataType<List<DataType>> targetType = context.getTargetDataType(); - Operation targetOp = (Operation)context.getTargetOperation(); - boolean targetWrapped = targetOp != null && targetOp.isWrapperStyle() && targetOp.getWrapper() != null; - boolean targetBare = targetOp != null && !targetOp.isWrapperStyle() && targetOp.getWrapper() == null; - - WrapperHandler targetWrapperHandler = null; - String targetDataBinding = getDataBinding(targetOp); - targetWrapperHandler = getWrapperHandler(targetDataBinding, targetWrapped); - - if ((!sourceWrapped &&!sourceBare) && targetWrapped) { - // Unwrapped --> Wrapped - WrapperInfo wrapper = targetOp.getWrapper(); - ElementInfo wrapperElement = wrapper.getOutputWrapperElement(); - List<ElementInfo> childElements = wrapper.getOutputChildElements(); - Class<?> targetWrapperClass = wrapper != null ? wrapper.getOutputWrapperClass() : null; - - Object[] outputs = null; - if ( !sourceOp.hasArrayWrappedOutput() ) { - outputs = new Object[] {response}; - } else { - outputs = (Object[])response; - } - - // If the source can be wrapped, wrapped it first - if (sourceWrapperHandler != null) { - WrapperInfo sourceWrapperInfo = sourceOp.getWrapper(); - DataType sourceWrapperType = - sourceWrapperInfo != null ? sourceWrapperInfo.getOutputWrapperType() : null; - - if (sourceWrapperType != null && matches(sourceOp.getWrapper(), targetOp.getWrapper())) { - Class<?> sourceWrapperClass = sourceWrapperType.getPhysical(); - - Object sourceWrapper = sourceWrapperHandler.create(sourceOp, false); - if (sourceWrapper != null) { - if (!childElements.isEmpty()) { - // Set the return value - sourceWrapperHandler.setChildren(sourceWrapper, - outputs, - sourceOp, - false); - } - Object targetWrapper = - mediator.mediate(sourceWrapper, sourceWrapperType, targetType.getLogical().get(0), context - .getMetadata()); - return targetWrapper; - } - } - } - Object targetWrapper = targetWrapperHandler.create(targetOp, false); - - if (childElements.isEmpty()) { - // void output - return targetWrapper; - } - - // No source wrapper, so we want to transform the child and then wrap the child-level target with the - // target wrapper handler. - - Object[] targetChildren = new Object[outputs.length]; - for (int i = 0; i < outputs.length; i++) { - DataType<XMLType> targetOutputType = wrapper.getUnwrappedOutputType().getLogical().get(i); - targetChildren[i] = - mediator.mediate(outputs[i], sourceType.getLogical().get(i), targetOutputType, context.getMetadata()); - } - targetWrapperHandler.setChildren(targetWrapper, - targetChildren, - targetOp, - false); - return targetWrapper; - - } else if (sourceWrapped && (!targetWrapped && !targetBare)) { - // Wrapped to Unwrapped - Object sourceWrapper = response; - List<ElementInfo> childElements = sourceOp.getWrapper().getOutputChildElements(); - if (childElements.isEmpty()) { - // The void output - return null; - } - if (targetWrapperHandler != null) { - ElementInfo wrapperElement = sourceOp.getWrapper().getOutputWrapperElement(); - - // FIXME: This is a workaround for the wsdless support as it passes in child elements - // under the wrapper that only matches by position - if (sourceWrapperHandler.isInstance(sourceWrapper, sourceOp, false)) { - - WrapperInfo targetWrapperInfo = targetOp.getWrapper(); - DataType targetWrapperType = - targetWrapperInfo != null ? targetWrapperInfo.getOutputWrapperType() : null; - - if (targetWrapperType != null && matches(sourceOp.getWrapper(), targetOp.getWrapper())) { - Object targetWrapper = - mediator.mediate(sourceWrapper, sourceType.getLogical().get(0), targetWrapperType, context - .getMetadata()); - List targetChildren = targetWrapperHandler.getChildren(targetWrapper, targetOp, false); - if (targetOp.hasArrayWrappedOutput()) { - return targetChildren.toArray(); - } else { - return targetChildren.get(0); - } - } - } - } - - // Otherwise we need to unwrap on the source side, and then transform each child - Object[] sourceChildren = sourceWrapperHandler.getChildren(sourceWrapper, sourceOp, false).toArray(); - Object[] target = new Object[sourceChildren.length]; - for (int i = 0; i < sourceChildren.length; i++) { - DataType<XMLType> childType = sourceOp.getWrapper().getUnwrappedOutputType().getLogical().get(i); - target[i] = - mediator.mediate(sourceChildren[i], childType, targetType.getLogical().get(i), context - .getMetadata()); - } - - if (targetOp.hasArrayWrappedOutput()) { - return target; - } else { - if (target.length > 1 ) { - throw new IllegalStateException("Expecting only one output based on Operation model, found: " + - target.length + " # of outputs."); - } - return target[0]; - } - } else { - Object[] outputs = null; - if ( !sourceOp.hasArrayWrappedOutput() ) { - outputs = new Object[] {response}; - } else { - outputs = (Object[])response; - } - Object[] target = new Object[outputs.length]; - for (int i = 0; i < outputs.length; i++) { - Object child = - mediator.mediate(outputs[i], sourceType.getLogical().get(i), targetType.getLogical().get(i), context - .getMetadata()); - target[i] = child; - } - if (targetOp.hasArrayWrappedOutput()) { - return target; - } else { - if (target.length > 1 ) { - throw new IllegalStateException("Expecting only one output based on Operation model, found: " + - target.length + " # of outputs."); - } - return target[0]; - } - } - } catch (Exception e) { - throw new TransformationException(e); - } - } - -} |