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Diffstat (limited to 'branches/sca-java-2.0-M4/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/processor/WrapperJavaInterfaceProcessor.java')
-rw-r--r-- | branches/sca-java-2.0-M4/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/processor/WrapperJavaInterfaceProcessor.java | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/branches/sca-java-2.0-M4/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/processor/WrapperJavaInterfaceProcessor.java b/branches/sca-java-2.0-M4/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/processor/WrapperJavaInterfaceProcessor.java new file mode 100644 index 0000000000..a5526ab031 --- /dev/null +++ b/branches/sca-java-2.0-M4/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/processor/WrapperJavaInterfaceProcessor.java @@ -0,0 +1,126 @@ +/* + * 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.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 { + if (!javaInterface.isRemotable()) { + return; + } + for (Operation operation : javaInterface.getOperations()) { + WrapperInfo wrapper = operation.getWrapper(); + if (wrapper == null) { + continue; + } + // JIRA: TUSCANY-842 + String db = wrapper.getDataBinding(); + if (db == null || JAXB_DATABINDING.equals(db)) { + db = assignOperationDataBinding(operation); + } + + // Introspect the wrapper data type + org.apache.tuscany.sca.databinding.DataBinding dbObj = dataBindingRegistry.getDataBinding(db); + WrapperHandler handler = dbObj == null ? null : dbObj.getWrapperHandler(); + if (handler != null) { + wrapper.setInputWrapperType(handler.getWrapperType(operation, true)); + wrapper.setOutputWrapperType(handler.getWrapperType(operation, false)); + } + if (dbObj != null && handler == null) { + // To avoid JAXB wrapper bean generation + wrapper.setInputWrapperType(null); + wrapper.setOutputWrapperType(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 assignOperationDataBinding(Operation operation) { + + Set<String> dbs = new HashSet<String>(); + + // Can't use DataType<?> since operation.getInputType() returns: DataType<List<DataType>> + List<DataType> opDataTypes = new LinkedList<DataType>(); + + opDataTypes.addAll(operation.getInputType().getLogical()); + opDataTypes.add(operation.getOutputType()); + 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.getWrapper().setDataBinding(db); + return db; + } else { + return operation.getWrapper().getDataBinding(); + } + } +} |