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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 static org.apache.tuscany.sca.implementation.java.introspect.impl.JavaIntrospectionHelper.getBaseType;
import java.lang.annotation.ElementType;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.util.List;
import org.apache.tuscany.sca.assembly.AssemblyFactory;
import org.apache.tuscany.sca.implementation.java.IntrospectionException;
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.JavaParameterImpl;
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.JavaInterfaceContract;
import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
import org.osoa.sca.annotations.Producer;
/**
* Processes an {@link @Producer} annotation, updating the component type
*
* @version $$
*/
public class ProducerProcessor extends BaseJavaClassVisitor {
private JavaInterfaceFactory javaFactory;
public ProducerProcessor(AssemblyFactory assemblyFactory, JavaInterfaceFactory javaFactory) {
super(assemblyFactory);
this.javaFactory = javaFactory;
}
@Override
public void visitMethod(Method method, JavaImplementation type) throws IntrospectionException {
Producer annotation = method.getAnnotation(Producer.class);
if (annotation == null) {
return; // Not a producer annotation.
}
if (!JavaIntrospectionHelper.isSetter(method)) {
throw new IllegalProducerException("Annotated method is not a setter: " + method, method);
}
String name = annotation.name();
if ("".equals(name)) {
name = JavaIntrospectionHelper.toPropertyName(method.getName());
}
JavaElementImpl prod = type.getReferenceMembers().get(name);
// Setter override field
if (prod != null && prod.getElementType() != ElementType.FIELD) {
throw new DuplicateProducerException(name);
}
removeProducer(prod, type);
JavaElementImpl element = new JavaElementImpl(method, 0);
org.apache.tuscany.sca.assembly.Producer producer = createProducer(element, name);
type.getProducers().add(producer);
type.getReferenceMembers().put(name, element);
}
private boolean removeProducer(JavaElementImpl producer, JavaImplementation type) {
if (producer == null) {
return false;
}
List<org.apache.tuscany.sca.assembly.Producer> producers = type.getProducers();
for (int i = 0; i < producers.size(); i++) {
if (producers.get(i).getName().equals(producer.getName())) {
producers.remove(i);
return true;
}
}
return false;
}
@Override
public void visitField(Field field, JavaImplementation type) throws IntrospectionException {
Producer annotation = field.getAnnotation(Producer.class);
if (annotation == null) {
return;
}
String name = annotation.name();
if ("".equals(name)) {
name = field.getName();
}
JavaElementImpl prod = type.getReferenceMembers().get(name);
if (prod != null && prod.getElementType() == ElementType.FIELD) {
throw new DuplicateProducerException(name);
}
// Setter method override field
if (prod == null) {
JavaElementImpl element = new JavaElementImpl(field);
org.apache.tuscany.sca.assembly.Producer producer = createProducer(element, name);
type.getProducers().add(producer);
type.getReferenceMembers().put(name, element);
}
}
@Override
public void visitConstructorParameter(JavaParameterImpl parameter, JavaImplementation type)
throws IntrospectionException {
Producer refAnnotation = parameter.getAnnotation(Producer.class);
if (refAnnotation == null) {
return;
}
String paramName = parameter.getName();
String name = getProducerName(paramName, parameter.getIndex(), refAnnotation.name());
JavaElementImpl prod = type.getReferenceMembers().get(name);
// Setter override field
if (prod != null && prod.getElementType() != ElementType.FIELD) {
throw new DuplicateProducerException(name);
}
removeProducer(prod, type);
org.apache.tuscany.sca.assembly.Producer producer = createProducer(parameter, name);
type.getProducers().add(producer);
type.getReferenceMembers().put(name, parameter);
parameter.setClassifer(Producer.class);
parameter.setName(name);
}
private String getProducerName(String paramName, int pos, String name) throws InvalidConstructorException {
if ("".equals(name)) {
name = paramName;
}
if ("".equals(name)) {
return "_producer" + pos;
}
if (!"".equals(paramName) && !name.equals(paramName)) {
throw new InvalidConstructorException("Mismatching names specified for producer parameter " + pos);
} else {
return name;
}
}
private org.apache.tuscany.sca.assembly.Producer createProducer(JavaElementImpl element, String name)
throws IntrospectionException {
org.apache.tuscany.sca.assembly.Producer producer = assemblyFactory.createProducer();
JavaInterfaceContract interfaceContract = javaFactory.createJavaInterfaceContract();
producer.setInterfaceContract(interfaceContract);
producer.setName(name);
Class<?> rawType = element.getType();
Type genericType = element.getGenericType();
Class<?> baseType = getBaseType(rawType, genericType);
try {
JavaInterface interfaze = javaFactory.createJavaInterface(baseType);
producer.getInterfaceContract().setInterface(interfaze);
for (Operation op : interfaze.getOperations()) {
op.setNonBlocking(true);
}
} catch (InvalidInterfaceException e) {
throw new IntrospectionException(e);
}
return producer;
}
}
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