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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.blueprint;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import java.util.logging.Logger;
import org.apache.aries.blueprint.ExtendedBeanMetadata;
import org.apache.cxf.bus.extension.ExtensionManagerImpl;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.common.util.ReflectionUtil;
import org.apache.cxf.configuration.ConfiguredBeanLocator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.service.blueprint.container.BlueprintContainer;
import org.osgi.service.blueprint.container.NoSuchComponentException;
import org.osgi.service.blueprint.reflect.BeanMetadata;
import org.osgi.service.blueprint.reflect.BeanProperty;
import org.osgi.service.blueprint.reflect.ComponentMetadata;
/**
*
*/
public class BlueprintBeanLocator implements ConfiguredBeanLocator {
private static final Logger LOG = LogUtils.getL7dLogger(BlueprintBeanLocator.class);
ConfiguredBeanLocator orig;
BlueprintContainer container;
BundleContext context;
public BlueprintBeanLocator(ConfiguredBeanLocator orig,
BlueprintContainer cont,
BundleContext context) {
this.orig = orig;
this.container = cont;
this.context = context;
if (orig instanceof ExtensionManagerImpl) {
List names = new ArrayList(container.getComponentIds());
((ExtensionManagerImpl)orig).removeBeansOfNames(names);
}
}
static Class getClassForMetaData(BlueprintContainer container, ComponentMetadata cmd) {
Class cls = null;
if (cmd instanceof BeanMetadata) {
BeanMetadata bm = (BeanMetadata)cmd;
if (bm instanceof ExtendedBeanMetadata) {
cls = ((ExtendedBeanMetadata)bm).getRuntimeClass();
}
if (cls == null) {
try {
Method m = ReflectionUtil.findMethod(container.getClass(), "loadClass", String.class);
cls = (Class)ReflectionUtil.setAccessible(m).invoke(container, bm.getClassName());
} catch (Exception e) {
//ignore
}
}
}
return cls;
}
private Class getClassForMetaData(ComponentMetadata cmd) {
return getClassForMetaData(container, cmd);
}
private ComponentMetadata getComponentMetadata(String id) {
try {
return container.getComponentMetadata(id);
} catch (NoSuchComponentException nsce) {
return null;
}
}
public T getBeanOfType(String name, Class type) {
ComponentMetadata cmd = getComponentMetadata(name);
Class cls = getClassForMetaData(cmd);
if (cls != null && type.isAssignableFrom(cls)) {
return type.cast(container.getComponentInstance(name));
}
return orig.getBeanOfType(name, type);
}
/** {@inheritDoc}*/
public List getBeanNamesOfType(Class type) {
Set names = new LinkedHashSet();
for (String s : container.getComponentIds()) {
ComponentMetadata cmd = container.getComponentMetadata(s);
Class cls = getClassForMetaData(cmd);
if (cls != null && type.isAssignableFrom(cls)) {
names.add(s);
}
}
names.addAll(orig.getBeanNamesOfType(type));
return new ArrayList(names);
}
/** {@inheritDoc}*/
public Collection getBeansOfType(Class type) {
List list = new ArrayList();
for (String s : container.getComponentIds()) {
ComponentMetadata cmd = container.getComponentMetadata(s);
Class cls = getClassForMetaData(cmd);
if (cls != null && type.isAssignableFrom(cls)) {
list.add(type.cast(container.getComponentInstance(s)));
}
}
list.addAll(orig.getBeansOfType(type));
if (list.isEmpty()) {
try {
ServiceReference refs[] = context.getServiceReferences(type.getName(), null);
if (refs != null) {
for (ServiceReference r : refs) {
list.add(type.cast(context.getService(r)));
}
}
} catch (Exception ex) {
//ignore, just don't support the OSGi services
LOG.info("Try to find the Bean with type:" + type
+ " from OSGi services and get error: " + ex);
}
}
return list;
}
/** {@inheritDoc}*/
public boolean loadBeansOfType(Class type, BeanLoaderListener listener) {
List names = new ArrayList();
boolean loaded = false;
for (String s : container.getComponentIds()) {
ComponentMetadata cmd = container.getComponentMetadata(s);
Class cls = getClassForMetaData(cmd);
if (cls != null && type.isAssignableFrom(cls)) {
names.add(s);
}
}
Collections.reverse(names);
for (String s : names) {
ComponentMetadata cmd = container.getComponentMetadata(s);
Class beanType = getClassForMetaData(cmd);
Class t = beanType.asSubclass(type);
if (listener.loadBean(s, t)) {
Object o = container.getComponentInstance(s);
if (listener.beanLoaded(s, type.cast(o))) {
return true;
}
loaded = true;
}
}
return loaded || orig.loadBeansOfType(type, listener);
}
public boolean hasConfiguredPropertyValue(String beanName, String propertyName, String value) {
ComponentMetadata cmd = getComponentMetadata(beanName);
if (cmd instanceof BeanMetadata) {
BeanMetadata br = (BeanMetadata)cmd;
for (BeanProperty s : br.getProperties()) {
if (propertyName.equals(s.getName())) {
return true;
}
}
return false;
}
return orig.hasConfiguredPropertyValue(beanName, propertyName, value);
}
public boolean hasBeanOfName(String name) {
ComponentMetadata cmd = getComponentMetadata(name);
if (cmd instanceof BeanMetadata) {
return true;
}
return orig.hasBeanOfName(name);
}
}