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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.cxf.bus.managers;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Map;
import java.util.ResourceBundle;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArraySet;
import javax.annotation.Resource;
import org.apache.cxf.Bus;
import org.apache.cxf.BusException;
import org.apache.cxf.binding.AbstractBindingFactory;
import org.apache.cxf.binding.BindingFactory;
import org.apache.cxf.binding.BindingFactoryManager;
import org.apache.cxf.common.i18n.BundleUtils;
import org.apache.cxf.common.i18n.Message;
import org.apache.cxf.common.injection.NoJSR250Annotations;
import org.apache.cxf.configuration.ConfiguredBeanLocator;
import org.apache.cxf.configuration.spring.MapProvider;
import org.apache.cxf.helpers.CastUtils;
@NoJSR250Annotations(unlessNull = "bus")
public final class BindingFactoryManagerImpl implements BindingFactoryManager {
private static final ResourceBundle BUNDLE = BundleUtils.getBundle(BindingFactoryManagerImpl.class);
Map bindingFactories;
Set failed = new CopyOnWriteArraySet();
Set loaded = new CopyOnWriteArraySet();
Bus bus;
public BindingFactoryManagerImpl() {
bindingFactories = new ConcurrentHashMap(8, 0.75f, 4);
}
public BindingFactoryManagerImpl(Bus b) {
bindingFactories = new ConcurrentHashMap(8, 0.75f, 4);
setBus(b);
}
public BindingFactoryManagerImpl(Map bindingFactories) {
super();
if (!(bindingFactories instanceof ConcurrentHashMap)) {
bindingFactories = new ConcurrentHashMap(bindingFactories);
}
this.bindingFactories = bindingFactories;
}
public BindingFactoryManagerImpl(Map bindingFactories, Bus b) {
super();
if (!(bindingFactories instanceof ConcurrentHashMap)) {
bindingFactories = new ConcurrentHashMap(bindingFactories);
}
this.bindingFactories = bindingFactories;
setBus(b);
}
public BindingFactoryManagerImpl(MapProvider bindingFactories) {
super();
this.bindingFactories = bindingFactories.createMap();
}
/**
* Spring configuration via constructor is slow.
* This accessor allows initialization via a property.
* @param bindingFactoriesMapProvider
*/
public void setMapProvider(MapProvider bindingFactoriesMapProvider) {
this.bindingFactories = bindingFactoriesMapProvider.createMap();
}
@Resource
public void setBus(Bus b) {
bus = b;
if (null != bus) {
bus.setExtension(this, BindingFactoryManager.class);
}
}
public void registerBindingFactory(String name,
BindingFactory factory) {
bindingFactories.put(name, factory);
}
public void unregisterBindingFactory(String name) {
bindingFactories.remove(name);
}
public BindingFactory getBindingFactory(final String namespace) throws BusException {
BindingFactory factory = bindingFactories.get(namespace);
if (null == factory) {
if (!failed.contains(namespace)) {
factory = loadActivationNamespace(namespace);
if (factory == null) {
factory = loadDefaultNamespace(namespace);
}
if (factory == null) {
factory = loadAll(namespace);
}
}
if (factory == null) {
failed.add(namespace);
throw new BusException(new Message("NO_BINDING_FACTORY_EXC", BUNDLE, namespace));
}
}
return factory;
}
private BindingFactory loadAll(final String namespace) {
//Try old method of having activationNamespaces configured in.
//It activates all the factories in the list until one matches, thus
//it activates stuff that really aren't needed.
ConfiguredBeanLocator.BeanLoaderListener listener
= new ConfiguredBeanLocator.BeanLoaderListener() {
public boolean beanLoaded(String name, BindingFactory bean) {
loaded.add(name);
if (!bindingFactories.containsKey(namespace)) {
if (bean instanceof AbstractBindingFactory) {
for (String ns
: ((AbstractBindingFactory)bean).getActivationNamespaces()) {
registerBindingFactory(ns, bean);
}
} else {
try {
Method m = bean.getClass().getMethod("getActivationNamespace", new Class[0]);
Collection c = CastUtils.cast((Collection)m.invoke(bean));
for (String s : c) {
registerBindingFactory(s, bean);
}
} catch (Exception ex) {
//ignore
}
}
}
return bindingFactories.containsKey(namespace);
}
public boolean loadBean(String name, Class type) {
return !bindingFactories.containsKey(namespace) && !loaded.contains(name);
}
};
bus.getExtension(ConfiguredBeanLocator.class)
.loadBeansOfType(BindingFactory.class,
listener);
return bindingFactories.get(namespace);
}
private BindingFactory loadDefaultNamespace(final String namespace) {
//First attempt will be to examine the factory class
//for a DEFAULT_NAMESPACES field and use it
ConfiguredBeanLocator.BeanLoaderListener listener
= new ConfiguredBeanLocator.BeanLoaderListener() {
public boolean beanLoaded(String name, BindingFactory bean) {
loaded.add(name);
return bindingFactories.containsKey(namespace);
}
public boolean loadBean(String name, Class type) {
if (!loaded.contains(name)) {
try {
Field f = type.getField("DEFAULT_NAMESPACES");
Object o = f.get(null);
if (o instanceof Collection) {
Collection c = CastUtils.cast((Collection)o);
return c.contains(namespace);
}
} catch (Exception ex) {
//ignore
}
}
return false;
}
};
bus.getExtension(ConfiguredBeanLocator.class)
.loadBeansOfType(BindingFactory.class,
listener);
return bindingFactories.get(namespace);
}
private BindingFactory loadActivationNamespace(final String namespace) {
final ConfiguredBeanLocator locator = bus.getExtension(ConfiguredBeanLocator.class);
//Second attempt will be to examine the factory class
//for a DEFAULT_NAMESPACES field and if it doesn't exist, try
//using the older activation ns things. This will then load most
//of the "older" things
ConfiguredBeanLocator.BeanLoaderListener listener
= new ConfiguredBeanLocator.BeanLoaderListener() {
public boolean beanLoaded(String name, BindingFactory bean) {
loaded.add(name);
return bindingFactories.containsKey(namespace);
}
public boolean loadBean(String name, Class type) {
if (loaded.contains(name)) {
return false;
}
try {
type.getField("DEFAULT_NAMESPACES");
return false;
} catch (Exception ex) {
//ignore
}
return locator.hasConfiguredPropertyValue(name, "activationNamespaces", namespace);
}
};
locator.loadBeansOfType(BindingFactory.class,
listener);
return bindingFactories.get(namespace);
}
}
