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DefaultRegistry.java
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DefaultRegistry.java
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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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.camel.support;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.camel.spi.BeanRepository;
import org.apache.camel.spi.Registry;
/**
* The default {@link Registry} which supports using a given first-choice repository to lookup the beans,
* such as Spring, JNDI, OSGi etc. And to use a secondary {@link SimpleRegistry} as the fallback repository
* to lookup and bind beans.
*/
public class DefaultRegistry implements Registry {
private List<BeanRepository> repositories;
private final Registry simple = new SimpleRegistry();
/**
* Creates a default registry that only uses {@link SimpleRegistry} as the repository.
*/
public DefaultRegistry() {
this(null);
}
/**
* Creates a registry that uses the given {@link BeanRepository} as first choice bean repository to lookup beans.
* Will fallback and use {@link SimpleRegistry} as internal registry if the beans cannot be found in the first
* choice bean repository.
*
* @param repositories the first choice repositories such as Spring, JNDI, OSGi etc.
*/
public DefaultRegistry(BeanRepository... repositories) {
if (repositories != null) {
this.repositories = new ArrayList<>(Arrays.asList(repositories));
}
}
@Override
public void bind(String id, Object bean) {
simple.bind(id, bean);
}
@Override
public Object lookupByName(String name) {
if (repositories != null) {
for (BeanRepository r : repositories) {
Object answer = r.lookupByName(name);
if (answer != null) {
return answer;
}
}
}
return simple.lookupByName(name);
}
@Override
public <T> T lookupByNameAndType(String name, Class<T> type) {
if (repositories != null) {
for (BeanRepository r : repositories) {
T answer = r.lookupByNameAndType(name, type);
if (answer != null) {
return answer;
}
}
}
return simple.lookupByNameAndType(name, type);
}
@Override
public <T> Map<String, T> findByTypeWithName(Class<T> type) {
if (repositories != null) {
for (BeanRepository r : repositories) {
Map<String, T> answer = r.findByTypeWithName(type);
if (answer != null) {
return answer;
}
}
}
return simple.findByTypeWithName(type);
}
@Override
public <T> Set<T> findByType(Class<T> type) {
if (repositories != null) {
for (BeanRepository r : repositories) {
Set<T> answer = r.findByType(type);
if (answer != null) {
return answer;
}
}
}
return simple.findByType(type);
}
}