diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0-Beta4-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/processor/WrapperJavaInterfaceProcessor.java')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta4-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/processor/WrapperJavaInterfaceProcessor.java | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta4-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/processor/WrapperJavaInterfaceProcessor.java b/sca-java-2.x/tags/2.0-Beta4-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/processor/WrapperJavaInterfaceProcessor.java new file mode 100644 index 0000000000..e81b3a9080 --- /dev/null +++ b/sca-java-2.x/tags/2.0-Beta4-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/processor/WrapperJavaInterfaceProcessor.java @@ -0,0 +1,178 @@ +/* + * 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.processor; + +import java.util.HashSet; +import java.util.LinkedList; +import java.util.List; +import java.util.Set; + +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.databinding.DataBinding; +import org.apache.tuscany.sca.databinding.DataBindingExtensionPoint; +import org.apache.tuscany.sca.databinding.WrapperHandler; +import org.apache.tuscany.sca.databinding.javabeans.JavaBeansDataBinding; +import org.apache.tuscany.sca.databinding.javabeans.SimpleJavaDataBinding; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.java.JavaInterface; +import org.apache.tuscany.sca.interfacedef.java.introspect.JavaInterfaceVisitor; +import org.apache.tuscany.sca.interfacedef.util.WrapperInfo; + +/** + * The databinding annotation processor for java interfaces + * + * @version $Rev$ $Date$ + */ +public class WrapperJavaInterfaceProcessor implements JavaInterfaceVisitor { + private static final String JAXB_DATABINDING = "javax.xml.bind.JAXBElement"; + private DataBindingExtensionPoint dataBindingRegistry; + + public WrapperJavaInterfaceProcessor(ExtensionPointRegistry registry) { + super(); + this.dataBindingRegistry = registry.getExtensionPoint(DataBindingExtensionPoint.class); + } + + public void visitInterface(JavaInterface javaInterface) throws InvalidInterfaceException { + // create regardless in case the user overrides the remotable flag + // in the SCDL + //if (!javaInterface.isRemotable()) { + // return; + //} + for (Operation operation : javaInterface.getOperations()) { + WrapperInfo inputWrapperInfo = operation.getInputWrapper(); + WrapperInfo outputWrapperInfo = operation.getOutputWrapper(); + if (inputWrapperInfo == null || outputWrapperInfo == null) { + continue; + } + // TUSCANY-824 + // TUSCANY-3804 - modify the existing code to set up the input wrapper + String db = inputWrapperInfo.getDataBinding(); + if (db == null || JAXB_DATABINDING.equals(db)) { + db = assignInputDataBinding(operation); + } + + // Introspect the wrapper data type + DataBinding dbObj = dataBindingRegistry.getDataBinding(db); + WrapperHandler handler = dbObj == null ? null : dbObj.getWrapperHandler(); + if (handler != null) { + inputWrapperInfo.setWrapperType(handler.getWrapperType(operation, true)); + } + if (dbObj != null && handler == null) { + // To avoid JAXB wrapper bean generation + inputWrapperInfo.setWrapperType(null); + } + + // TUSCANY-3804 - handle output wrapper separately + db = outputWrapperInfo.getDataBinding(); + if (db == null || JAXB_DATABINDING.equals(db)) { + db = assignOutputDataBinding(operation); + } + + // Introspect the wrapper data type + dbObj = dataBindingRegistry.getDataBinding(db); + handler = dbObj == null ? null : dbObj.getWrapperHandler(); + if (handler != null) { + outputWrapperInfo.setWrapperType(handler.getWrapperType(operation, false)); + } + + if (dbObj != null && handler == null) { + // To avoid JAXB wrapper bean generation + outputWrapperInfo.setWrapperType(null); + } + } + } + + /* + * Assigns an operation DB if one of the input types, output type, fault types has a non-default DB. + * However, if two of the input types, output type, fault types have two different non-default DBs + * ( e.g. SDO and JAXB), then we do nothing to the operation DB. + * + * The method logic assumes the JavaBeans DataBinding is the default + */ + private String assignInputDataBinding(Operation operation) { + + Set<String> dbs = new HashSet<String>(); + List<DataType> opDataTypes = new LinkedList<DataType>(); + + opDataTypes.addAll(operation.getInputType().getLogical()); + + for (DataType<?> d : opDataTypes) { + if (d != null) { + String dataBinding = d.getDataBinding(); + if ("java:array".equals(dataBinding)) { + dataBinding = ((DataType)d.getLogical()).getDataBinding(); + } + if (dataBinding != null) { + dbs.add(dataBinding); + } + } + } + + dbs.remove(JavaBeansDataBinding.NAME); + dbs.remove(SimpleJavaDataBinding.NAME); + + if (dbs.size() == 1) { + String db = dbs.iterator().next(); + operation.getInputWrapper().setDataBinding(db); + return db; + } else { + return operation.getInputWrapper().getDataBinding(); + } + } + + // TUSCANY-3804: handle output wrapper separately + // change here is different to that in 3804 + // to deal with logical data type + faults + private String assignOutputDataBinding(Operation operation) { + Set<String> dbs = new HashSet<String>(); + List<DataType> opDataTypes = new LinkedList<DataType>(); + + opDataTypes.addAll(operation.getOutputType().getLogical()); + + for (DataType<DataType> ft : operation.getFaultTypes()) { + opDataTypes.add(ft.getLogical()); + } + + for (DataType<?> d : opDataTypes) { + if (d != null) { + String dataBinding = d.getDataBinding(); + if ("java:array".equals(dataBinding)) { + dataBinding = ((DataType)d.getLogical()).getDataBinding(); + } + if (dataBinding != null) { + dbs.add(dataBinding); + } + } + } + + dbs.remove(JavaBeansDataBinding.NAME); + dbs.remove(SimpleJavaDataBinding.NAME); + + if (dbs.size() == 1) { + String db = dbs.iterator().next(); + operation.getOutputWrapper().setDataBinding(db); + return db; + } else { + return operation.getOutputWrapper().getDataBinding(); + } + } +} |