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Diffstat (limited to 'sca-java-1.x/branches/sca-java-0.91/modules/databinding-sdo/src/main/java/org/apache/tuscany/sca/databinding/sdo/HelperContextProcessor.java')
-rw-r--r-- | sca-java-1.x/branches/sca-java-0.91/modules/databinding-sdo/src/main/java/org/apache/tuscany/sca/databinding/sdo/HelperContextProcessor.java | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-0.91/modules/databinding-sdo/src/main/java/org/apache/tuscany/sca/databinding/sdo/HelperContextProcessor.java b/sca-java-1.x/branches/sca-java-0.91/modules/databinding-sdo/src/main/java/org/apache/tuscany/sca/databinding/sdo/HelperContextProcessor.java new file mode 100644 index 0000000000..561e5f3b39 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-0.91/modules/databinding-sdo/src/main/java/org/apache/tuscany/sca/databinding/sdo/HelperContextProcessor.java @@ -0,0 +1,110 @@ +/* + * 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.databinding.sdo; + +import java.beans.Introspector; +import java.lang.reflect.Field; +import java.lang.reflect.Method; + +import org.apache.tuscany.sca.assembly.AssemblyFactory; +import org.apache.tuscany.sca.implementation.java.JavaImplementation; +import org.apache.tuscany.sca.implementation.java.impl.JavaElementImpl; +import org.apache.tuscany.sca.implementation.java.impl.JavaResourceImpl; +import org.apache.tuscany.sca.implementation.java.introspect.IntrospectionException; +import org.apache.tuscany.sca.implementation.java.introspect.impl.BaseJavaClassVisitor; + +import commonj.sdo.helper.HelperContext; + +/** + * Processes {@link @HelperContext} annotations on a component implementation + * and adds a {@link JavaMappedProperty} to the component type which will be + * used to inject the appropriate context + * + * @version $Rev$ $Date$ + */ +public class HelperContextProcessor extends BaseJavaClassVisitor { + private HelperContextRegistry registry; + + /** + * @param registry + */ + public HelperContextProcessor(AssemblyFactory assemblyFactory, HelperContextRegistry registry) { + super(assemblyFactory); + this.registry = registry; + } + + /** + * Takes a setter or getter method name and converts it to a property name + * according to JavaBean conventions. For example, <code>setFoo(var)</code> + * is returned as property <code>foo<code> + */ + public static String toPropertyName(String name) { + if (!name.startsWith("set")) { + return name; + } + return Introspector.decapitalize(name.substring(3)); + } + + public void visitMethod(Method method, + JavaImplementation type) throws IntrospectionException { + if (!method.isAnnotationPresent(org.apache.tuscany.sca.databinding.sdo.api.HelperContext.class)) { + return; + } + if (method.getParameterTypes().length != 1) { + throw new IllegalArgumentException("HelperContext setter must have one parameter: " + method); + } + Class<?> paramType = method.getParameterTypes()[0]; + if (HelperContext.class == paramType) { + String name = toPropertyName(method.getName()); + JavaResourceImpl resource = new JavaResourceImpl(new JavaElementImpl(method, 0)); +// resource.setObjectFactory(new HelperContextFactory(context.getComponentId())); + type.getResources().put(name, resource); + } + } + + public void visitField(Field field, + JavaImplementation type) throws IntrospectionException { + if (!field.isAnnotationPresent(org.apache.tuscany.sca.databinding.sdo.api.HelperContext.class)) { + return; + } + Class<?> paramType = field.getType(); + if (HelperContext.class == paramType) { + String name = field.getName(); + JavaResourceImpl resource = new JavaResourceImpl(new JavaElementImpl(field)); +// resource.setObjectFactory(new HelperContextFactory(context.getComponentId())); + type.getResources().put(name, resource); + } + } + + /* + private class HelperContextFactory implements ObjectFactory<HelperContext> { + private URI id; + + public HelperContextFactory(URI id) { + super(); + this.id = id; + } + + public HelperContext getInstance() throws ObjectCreationException { + return registry.getHelperContext(id); + } + + } + */ +} |