org.apache.cxf.resource.DefaultResourceManager 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.resource;
import java.io.InputStream;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.cxf.common.logging.LogUtils;
public class DefaultResourceManager implements ResourceManager {
private static final Logger LOG = LogUtils.getL7dLogger(DefaultResourceManager.class);
protected final List registeredResolvers
= new CopyOnWriteArrayList();
public DefaultResourceManager() {
initializeDefaultResolvers();
}
public DefaultResourceManager(ResourceResolver resolver) {
addResourceResolver(resolver);
}
public DefaultResourceManager(List resolvers) {
registeredResolvers.addAll(resolvers);
}
public final T resolveResource(String name, Class type) {
return findResource(name, type, false, registeredResolvers);
}
public final T resolveResource(String name, Class type, List resolvers) {
return findResource(name, type, false, resolvers);
}
public final InputStream getResourceAsStream(String name) {
return findResource(name, InputStream.class, true, registeredResolvers);
}
public final void addResourceResolver(ResourceResolver resolver) {
if (!registeredResolvers.contains(resolver)) {
registeredResolvers.add(0, resolver);
}
}
public final void removeResourceResolver(ResourceResolver resolver) {
if (registeredResolvers.contains(resolver)) {
registeredResolvers.remove(resolver);
}
}
public final List getResourceResolvers() {
return Collections.unmodifiableList(registeredResolvers);
}
private T findResource(String name, Class type, boolean asStream,
List resolvers) {
if (resolvers == null) {
resolvers = registeredResolvers;
}
if (LOG.isLoggable(Level.FINE)) {
LOG.fine("resolving resource <" + name + ">" + (asStream ? " as stream "
: " type <" + type + ">"));
}
T ret = null;
for (ResourceResolver rr : resolvers) {
if (asStream) {
ret = type.cast(rr.getAsStream(name));
} else {
ret = rr.resolve(name, type);
}
if (ret != null) {
break;
}
}
return ret;
}
private void initializeDefaultResolvers() {
addResourceResolver(new ClasspathResolver());
addResourceResolver(new ClassLoaderResolver(getClass().getClassLoader()));
}
}