org.apache.cxf.feature.AbstractFeature Maven / Gradle / Ivy
/**
* 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.feature;
import java.util.List;
import org.apache.cxf.Bus;
import org.apache.cxf.endpoint.Client;
import org.apache.cxf.endpoint.Server;
import org.apache.cxf.interceptor.InterceptorProvider;
/**
* A Feature is something that is able to customize a Server, Client, or Bus, typically
* adding capabilities. For instance, there may be a LoggingFeature which configures
* one of the above to log each of their messages.
*
* By default the initialize methods all delegate to initializeProvider(InterceptorProvider).
* If you're simply adding interceptors to a Server, Client, or Bus, this allows you to add
* them easily.
*/
public abstract class AbstractFeature implements Feature {
public void initialize(Server server, Bus bus) {
initializeProvider(server.getEndpoint(), bus);
}
public void initialize(Client client, Bus bus) {
initializeProvider(client, bus);
}
public void initialize(InterceptorProvider interceptorProvider, Bus bus) {
initializeProvider(interceptorProvider, bus);
}
public void initialize(Bus bus) {
initializeProvider(bus, bus);
}
protected void initializeProvider(InterceptorProvider provider, Bus bus) {
}
/**
* Convenience method to extract a feature by type from an active list.
*
* @param features the given feature list
* @param type the feature type required
* @return the feature of the specified type if active
*/
public static T getActive(List features,
Class type) {
T active = null;
if (features != null) {
for (Feature feature : features) {
if (type.isInstance(feature)) {
active = type.cast(feature);
break;
}
}
}
return active;
}
}