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//
// ========================================================================
// Copyright (c) 1995-2012 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.annotations;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import javax.annotation.PostConstruct;
import org.eclipse.jetty.annotations.AnnotationIntrospector.AbstractIntrospectableAnnotationHandler;
import org.eclipse.jetty.plus.annotation.LifeCycleCallbackCollection;
import org.eclipse.jetty.plus.annotation.PostConstructCallback;
import org.eclipse.jetty.webapp.MetaData;
import org.eclipse.jetty.webapp.Origin;
import org.eclipse.jetty.webapp.WebAppContext;
public class PostConstructAnnotationHandler extends AbstractIntrospectableAnnotationHandler
{
protected WebAppContext _context;
public PostConstructAnnotationHandler (WebAppContext wac)
{
super(true);
_context = wac;
}
public void doHandle(Class clazz)
{
//Check that the PostConstruct is on a class that we're interested in
if (Util.isServletType(clazz))
{
Method[] methods = clazz.getDeclaredMethods();
for (int i=0; i<methods.length; i++)
{
Method m = (Method)methods[i];
if (m.isAnnotationPresent(PostConstruct.class))
{
if (m.getParameterTypes().length != 0)
throw new IllegalStateException(m+" has parameters");
if (m.getReturnType() != Void.TYPE)
throw new IllegalStateException(m+" is not void");
if (m.getExceptionTypes().length != 0)
throw new IllegalStateException(m+" throws checked exceptions");
if (Modifier.isStatic(m.getModifiers()))
throw new IllegalStateException(m+" is static");
//ServletSpec 3.0 p80 If web.xml declares even one post-construct then all post-constructs
//in fragments must be ignored. Otherwise, they are additive.
MetaData metaData = _context.getMetaData();
Origin origin = metaData.getOrigin("post-construct");
if (origin != null &&
(origin == Origin.WebXml ||
origin == Origin.WebDefaults ||
origin == Origin.WebOverride))
return;
PostConstructCallback callback = new PostConstructCallback();
callback.setTarget(clazz.getName(), m.getName());
LifeCycleCallbackCollection lifecycles = (LifeCycleCallbackCollection)_context.getAttribute(LifeCycleCallbackCollection.LIFECYCLE_CALLBACK_COLLECTION);
if (lifecycles == null)
{
lifecycles = new LifeCycleCallbackCollection();
_context.setAttribute(LifeCycleCallbackCollection.LIFECYCLE_CALLBACK_COLLECTION,lifecycles);
}
lifecycles.add(callback);
}
}
}
}
}
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