diff options
Diffstat (limited to 'java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Input2InputTransformer.java')
| -rw-r--r-- | java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Input2InputTransformer.java | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Input2InputTransformer.java b/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Input2InputTransformer.java deleted file mode 100644 index 3422713bb3..0000000000 --- a/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Input2InputTransformer.java +++ /dev/null @@ -1,270 +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.List; - -import org.apache.tuscany.sca.core.ExtensionPointRegistry; -import org.apache.tuscany.sca.core.UtilityExtensionPoint; -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.databinding.impl.BaseTransformer; -import org.apache.tuscany.sca.interfacedef.DataType; -import org.apache.tuscany.sca.interfacedef.Operation; -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 input from one IDL to the - * other one - * - * @version $Rev$ $Date$ - */ -public class Input2InputTransformer extends BaseTransformer<Object[], Object[]> implements - PullTransformer<Object[], Object[]> { - protected Mediator mediator; - - public Input2InputTransformer(ExtensionPointRegistry registry) { - super(); - this.mediator = registry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(Mediator.class); - } - - @Override - public String getSourceDataBinding() { - return DataBinding.IDL_INPUT; - } - - @Override - public String getTargetDataBinding() { - return DataBinding.IDL_INPUT; - } - - /** - * @see org.apache.tuscany.sca.databinding.impl.BaseTransformer#getSourceType() - */ - @Override - protected Class<Object[]> getSourceType() { - return Object[].class; - } - - /** - * @see org.apache.tuscany.sca.databinding.impl.BaseTransformer#getTargetType() - */ - @Override - protected Class<Object[]> getTargetType() { - return Object[].class; - } - - /** - * @see org.apache.tuscany.sca.databinding.Transformer#getWeight() - */ - @Override - public int getWeight() { - return 10000; - } - - /** - * 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.getInputWrapperElement().equals(w2.getInputWrapperElement())) { - return false; - } - - // Compare the child elements - List<ElementInfo> list1 = w1.getInputChildElements(); - List<ElementInfo> list2 = w2.getInputChildElements(); - 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[] source, TransformationContext context) { - // Check if the source operation is wrapped - 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; - - // Find the wrapper handler for source data - WrapperHandler sourceWrapperHandler = null; - String sourceDataBinding = getDataBinding(sourceOp); - sourceWrapperHandler = getWrapperHandler(sourceDataBinding, sourceWrapped); - - // Check if the target operation is wrapped - 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; - - // Find the wrapper handler for target data - WrapperHandler targetWrapperHandler = null; - String targetDataBinding = getDataBinding(targetOp); - targetWrapperHandler = getWrapperHandler(targetDataBinding, targetWrapped); - - if ((!sourceWrapped && !sourceBare) && targetWrapped) { - // Unwrapped --> Wrapped - WrapperInfo wrapper = targetOp.getWrapper(); - // ElementInfo wrapperElement = wrapper.getInputWrapperElement(); - - // Class<?> targetWrapperClass = wrapper != null ? wrapper.getInputWrapperClass() : null; - - if (source == null) { - // Empty child elements - Object targetWrapper = targetWrapperHandler.create(targetOp, true); - return new Object[] {targetWrapper}; - } - - // If the source can be wrapped, wrapped it first - if (sourceWrapperHandler != null) { - WrapperInfo sourceWrapperInfo = sourceOp.getWrapper(); - DataType sourceWrapperType = sourceWrapperInfo != null ? sourceWrapperInfo.getInputWrapperType() : null; - - // We only do wrapper to wrapper transformation if the source has a wrapper and both sides - // match by XML structure - if (sourceWrapperType != null && matches(sourceOp.getWrapper(), targetOp.getWrapper())) { - Class<?> sourceWrapperClass = sourceWrapperType.getPhysical(); - - // Create the source wrapper - Object sourceWrapper = sourceWrapperHandler.create(sourceOp, true); - - // Populate the source wrapper - if (sourceWrapper != null) { - sourceWrapperHandler.setChildren(sourceWrapper, - source, - sourceOp, - true); - - // Transform the data from source wrapper to target wrapper - Object targetWrapper = - mediator.mediate(sourceWrapper, sourceWrapperType, targetType.getLogical().get(0), context - .getMetadata()); - return new Object[] {targetWrapper}; - } - } - } - // Fall back to child by child transformation - Object targetWrapper = targetWrapperHandler.create(targetOp, true); - List<DataType> argTypes = wrapper.getUnwrappedInputType().getLogical(); - Object[] targetChildren = new Object[source.length]; - for (int i = 0; i < source.length; i++) { - // ElementInfo argElement = wrapper.getInputChildElements().get(i); - DataType<XMLType> argType = argTypes.get(i); - targetChildren[i] = - mediator.mediate(source[i], sourceType.getLogical().get(i), argType, context.getMetadata()); - } - targetWrapperHandler.setChildren(targetWrapper, - targetChildren, - targetOp, - true); - return new Object[] {targetWrapper}; - - } else if (sourceWrapped && (!targetWrapped && !targetBare)) { - // Wrapped to Unwrapped - Object sourceWrapper = source[0]; - Object[] target = null; - - // List<ElementInfo> childElements = sourceOp.getWrapper().getInputChildElements(); - if (targetWrapperHandler != null) { - // ElementInfo wrapperElement = sourceOp.getWrapper().getInputWrapperElement(); - // 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, true)) { - - WrapperInfo targetWrapperInfo = targetOp.getWrapper(); - DataType targetWrapperType = - targetWrapperInfo != null ? targetWrapperInfo.getInputWrapperType() : null; - if (targetWrapperType != null && matches(sourceOp.getWrapper(), targetOp.getWrapper())) { - Object targetWrapper = - mediator.mediate(sourceWrapper, sourceType.getLogical().get(0), targetWrapperType, context - .getMetadata()); - target = targetWrapperHandler.getChildren(targetWrapper, targetOp, true).toArray(); - return target; - } - } - } - Object[] sourceChildren = sourceWrapperHandler.getChildren(sourceWrapper, sourceOp, true).toArray(); - target = new Object[sourceChildren.length]; - for (int i = 0; i < sourceChildren.length; i++) { - DataType<XMLType> childType = sourceOp.getWrapper().getUnwrappedInputType().getLogical().get(i); - target[i] = - mediator.mediate(sourceChildren[i], childType, targetType.getLogical().get(i), context - .getMetadata()); - } - return target; - } else { - // Assuming wrapper to wrapper conversion can be handled here as well - Object[] newArgs = new Object[source.length]; - for (int i = 0; i < source.length; i++) { - Object child = - mediator.mediate(source[i], sourceType.getLogical().get(i), targetType.getLogical().get(i), context - .getMetadata()); - newArgs[i] = child; - } - return newArgs; - } - } - - 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; - } - - private String getDataBinding(Operation operation) { - WrapperInfo wrapper = operation.getWrapper(); - if (wrapper != null) { - return wrapper.getDataBinding(); - } else { - return null; - } - } - -} |