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/*
* 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.implementation.java.introspect.impl;
import java.lang.reflect.Field;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import org.apache.tuscany.sca.assembly.AssemblyFactory;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.implementation.java.IntrospectionException;
import org.apache.tuscany.sca.implementation.java.JavaElementImpl;
import org.apache.tuscany.sca.implementation.java.JavaImplementation;
import org.apache.tuscany.sca.implementation.java.JavaParameterImpl;
import org.apache.tuscany.sca.implementation.java.JavaResourceImpl;
import org.apache.tuscany.sca.implementation.java.introspect.BaseJavaClassVisitor;
import org.apache.tuscany.sca.implementation.java.introspect.JavaIntrospectionHelper;
/**
* Processes an {@link @Resource} annotation, updating the component type with
* corresponding {@link org.apache.tuscany.spi.implementation.java.JavaResourceImpl}
*
* @version $Rev$ $Date$
*/
public class ResourceProcessor extends BaseJavaClassVisitor {
public ResourceProcessor(AssemblyFactory factory) {
super(factory);
}
public ResourceProcessor(ExtensionPointRegistry registry) {
super(registry);
}
@Override
public void visitMethod(Method method, JavaImplementation type) throws IntrospectionException {
org.apache.tuscany.sca.implementation.java.introspect.impl.Resource annotation = method
.getAnnotation(org.apache.tuscany.sca.implementation.java.introspect.impl.Resource.class);
if (annotation == null) {
return;
}
if (method.getParameterTypes().length != 1) {
throw new IllegalResourceException("Resource setter must have one parameter", method);
}
String name = annotation.name();
if (name.length() < 1) {
name = JavaIntrospectionHelper.toPropertyName(method.getName());
}
if (type.getResources().get(name) != null) {
throw new DuplicateResourceException(name);
}
String mappedName = annotation.mappedName();
JavaResourceImpl resource = createResource(name, new JavaElementImpl(method, 0));
resource.setOptional(annotation.optional());
if (mappedName.length() > 0) {
resource.setMappedName(mappedName);
}
type.getResources().put(resource.getName(), resource);
}
@Override
public void visitField(Field field, JavaImplementation type) throws IntrospectionException {
org.apache.tuscany.sca.implementation.java.introspect.impl.Resource annotation = field
.getAnnotation(org.apache.tuscany.sca.implementation.java.introspect.impl.Resource.class);
if (annotation == null) {
return;
}
String name = annotation.name();
if (name.length() < 1) {
name = field.getName();
}
if (type.getResources().get(name) != null) {
throw new DuplicateResourceException(name);
}
String mappedName = annotation.mappedName();
JavaResourceImpl resource = createResource(name, new JavaElementImpl(field));
resource.setOptional(annotation.optional());
if (mappedName.length() > 0) {
resource.setMappedName(mappedName);
}
type.getResources().put(resource.getName(), resource);
}
@Override
public void visitConstructorParameter(JavaParameterImpl parameter, JavaImplementation type)
throws IntrospectionException {
org.apache.tuscany.sca.implementation.java.introspect.impl.Resource resourceAnnotation = parameter
.getAnnotation(org.apache.tuscany.sca.implementation.java.introspect.impl.Resource.class);
if (resourceAnnotation != null) {
String name = resourceAnnotation.name();
if ("".equals(name)) {
name = parameter.getName();
}
if ("".equals(name)) {
throw new InvalidResourceException("Missing resource name", (Member)parameter.getAnchor());
}
if (!"".equals(parameter.getName()) && !name.equals(parameter.getName())) {
throw new InvalidConstructorException("Mismatched resource name: " + parameter);
}
if (type.getResources().get(name) != null) {
throw new DuplicateResourceException(name);
}
String mappedName = resourceAnnotation.mappedName();
JavaResourceImpl resource = createResource(name, parameter);
resource.setOptional(resourceAnnotation.optional());
if (mappedName.length() > 0) {
resource.setMappedName(mappedName);
}
type.getResources().put(resource.getName(), resource);
}
}
/**
* Utility methods
*/
/**
*
* @param name
* @param element
* @return
*/
private static JavaResourceImpl createResource(String name, JavaElementImpl element) {
element.setClassifer(org.apache.tuscany.sca.implementation.java.introspect.impl.Resource.class);
element.setName(name);
return new JavaResourceImpl(element);
}
}
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