/*
* 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.Constructor;
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.JavaConstructorImpl;
import org.apache.tuscany.sca.implementation.java.JavaImplementation;
import org.apache.tuscany.sca.implementation.java.JavaParameterImpl;
import org.apache.tuscany.sca.implementation.java.introspect.BaseJavaClassVisitor;
/**
* Handles processing of a constructor decorated with
* {@link org.oasisopen.sca.annotation.Constructor}
*
* @version $Rev: 945147 $ $Date: 2010-05-17 14:41:01 +0100 (Mon, 17 May 2010) $
*/
@SuppressWarnings("unchecked")
public class ConstructorProcessor extends BaseJavaClassVisitor {
public ConstructorProcessor(AssemblyFactory factory) {
super(factory);
}
public ConstructorProcessor(ExtensionPointRegistry registry) {
super(registry);
}
@Override
public <T> void visitClass(Class<T> clazz, JavaImplementation type) throws IntrospectionException {
Constructor[] ctors = clazz.getConstructors();
boolean found = false;
for (Constructor constructor : ctors) {
JavaConstructorImpl<?> definition = new JavaConstructorImpl(constructor);
type.getConstructors().put(constructor, definition);
if (constructor.getAnnotation(org.oasisopen.sca.annotation.Constructor.class) != null) {
if (found) {
throw new DuplicateConstructorException("[JCI50002] Multiple constructors marked with @Constructor", constructor);
}
found = true;
type.setConstructor(definition);
}
}
}
@Override
public <T> void visitConstructor(Constructor<T> constructor, JavaImplementation type)
throws IntrospectionException {
org.oasisopen.sca.annotation.Constructor annotation = constructor
.getAnnotation(org.oasisopen.sca.annotation.Constructor.class);
if (annotation == null) {
return;
}
JavaConstructorImpl<?> definition = type.getConstructor();
if (definition == null) {
definition = new JavaConstructorImpl(constructor);
type.setConstructor(definition);
}
JavaParameterImpl[] parameters = definition.getParameters();
String[] value = annotation.value();
boolean isDefault = value.length == 0 || (value.length == 1 && "".equals(value[0]));
if (!isDefault && value.length != parameters.length) {
throw new InvalidConstructorException("Invalid Number of names in @Constructor");
}
for (JavaParameterImpl p : parameters) {
if (!hasAnnotation(p)) {
throw new InvalidConstructorException("JCA90003 constructor parameters for class " + type.getName() + " must have @Property or @Reference annotation");
}
}
for (int i = 0; i < parameters.length; i++) {
parameters[i].setName(i < value.length ? value[i] : "");
}
type.setConstructor(definition);
}
private boolean hasAnnotation(JavaParameterImpl p) {
if (p.getAnnotations() != null && p.getAnnotations().length > 0) {
return true;
}
// TODO: need to verify JCA90003 as it seems like any annotation should be ok not just SCA ref or prop
// if (p.getAnnotation(Reference.class) != null) {
// return true;
// }
// if (p.getAnnotation(Property.class) != null) {
// return true;
// }
return false;
}
}