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The Core Camel Java DSL based router
/**
* 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.camel.impl;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.camel.NoSuchBeanException;
import org.apache.camel.RuntimeCamelException;
import org.apache.camel.spi.Registry;
/**
* This registry will look up the object with the sequence of the registry list until it finds the Object.
*/
public class CompositeRegistry implements Registry {
private final List registryList;
public CompositeRegistry() {
registryList = new ArrayList();
}
public CompositeRegistry(List registries) {
registryList = registries;
}
public void addRegistry(Registry registry) {
registryList.add(registry);
}
List getRegistryList() {
return registryList;
}
public T lookupByNameAndType(String name, Class type) {
T answer = null;
RuntimeCamelException ex = null;
for (Registry registry : registryList) {
try {
answer = registry.lookupByNameAndType(name, type);
} catch (Throwable e) {
// do not double wrap the exception
if (e instanceof NoSuchBeanException) {
ex = (NoSuchBeanException)e;
} else {
ex = new NoSuchBeanException(name, "Cannot lookup: " + name + " from registry: " + registry
+ " with expected type: " + type + " due: " + e.getMessage(), e);
}
}
if (answer != null) {
return answer;
}
}
if (ex != null) {
throw ex;
} else {
return answer;
}
}
public Object lookupByName(String name) {
Object answer = null;
for (Registry registry : registryList) {
answer = registry.lookupByName(name);
if (answer != null) {
break;
}
}
return answer;
}
public Map findByTypeWithName(Class type) {
Map answer = Collections.emptyMap();
for (Registry registry : registryList) {
answer = registry.findByTypeWithName(type);
if (!answer.isEmpty()) {
break;
}
}
return answer;
}
public Set findByType(Class type) {
Set answer = Collections.emptySet();
for (Registry registry : registryList) {
answer = registry.findByType(type);
if (!answer.isEmpty()) {
break;
}
}
return answer;
}
public Object lookup(String name) {
return lookupByName(name);
}
public T lookup(String name, Class type) {
return lookupByNameAndType(name, type);
}
public Map lookupByType(Class type) {
return findByTypeWithName(type);
}
}