/*
* Copyright 2012 Agorava
*
* Licensed 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.agorava.utils.solder.unwraps;
import javassist.util.proxy.MethodHandler;
import org.apache.deltaspike.core.util.metadata.builder.ImmutableInjectionPoint;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.inject.AmbiguousResolutionException;
import javax.enterprise.inject.UnsatisfiedResolutionException;
import javax.enterprise.inject.spi.AnnotatedMethod;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;
import javax.enterprise.inject.spi.InjectionPoint;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.util.HashSet;
import java.util.Set;
//import org.jboss.solder.bean.ImmutableInjectionPoint;
public class UnwrapsInvocationHandler implements MethodHandler {
final private BeanManager manager;
final private AnnotatedMethod<?> annotatedMethod;
final private Method method;
final private Bean<?> bean;
final private InjectionPoint[] injectionPoints;
final private Bean<?> mainClassBean;
final private InjectionPoint injectionPoint;
public UnwrapsInvocationHandler(BeanManager manager, AnnotatedMethod<?> method, Bean<?> bean, InjectionPoint injectionPoint, Set<Annotation> declaringBeanQualifiers) {
this.manager = manager;
this.method = method.getJavaMember();
this.annotatedMethod = method;
this.bean = bean;
injectionPoints = new InjectionPoint[this.method.getTypeParameters().length];
for (int i = 0; i < injectionPoints.length; ++i) {
injectionPoints[i] = new ImmutableInjectionPoint(method.getParameters().get(i), manager, bean, false, false);
}
Type mainType = method.getDeclaringType().getBaseType();
HashSet<Annotation> mainClassQualifiers = new HashSet<Annotation>(declaringBeanQualifiers);
Set<Bean<?>> beans = manager.getBeans(mainType, mainClassQualifiers.toArray(new Annotation[0]));
if (beans.isEmpty()) {
throw new UnsatisfiedResolutionException("Could not find declaring bean for @Unwrap method " + method.getDeclaringType().getJavaClass() + "." + this.method.getName());
} else if (beans.size() > 1) {
throw new AmbiguousResolutionException("Could not find declaring bean for @Unwrap method " + method.getDeclaringType().getJavaClass() + "." + this.method.getName());
}
mainClassBean = beans.iterator().next();
this.injectionPoint = injectionPoint;
}
public Object invoke(Object proxy, Method thisMethod, Method m, Object[] args) throws Throwable {
CreationalContext<?> ctx = manager.createCreationalContext(bean);
Object[] params = new Object[method.getParameterTypes().length];
for (int i = 0; i < this.method.getParameterTypes().length; ++i) {
if (InjectionPoint.class.isAssignableFrom(this.method.getParameterTypes()[i])) {
params[i] = injectionPoint;
} else {
params[i] = manager.getInjectableReference(injectionPoints[i], ctx);
}
}
Object base = manager.getReference(mainClassBean, annotatedMethod.getDeclaringType().getJavaClass(), ctx);
Object result = method.invoke(base, params);
Object ret = thisMethod.invoke(result, args);
ctx.release();
return ret;
}
}