/*
* 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.brooklyn.camp.spi.collection;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.brooklyn.camp.spi.AbstractResource;
import org.apache.brooklyn.util.collections.MutableMap;
public class BasicResourceLookup<T extends AbstractResource> extends AbstractResourceLookup<T> {
Map<String,T> items = new MutableMap<String,T>();
Map<String,ResolvableLink<T>> links = new MutableMap<String,ResolvableLink<T>>();
public T get(String id) {
return items.get(id);
}
public synchronized List<ResolvableLink<T>> links() {
return new ArrayList<ResolvableLink<T>>(links.values());
}
public synchronized void add(T item) {
T old = items.put(item.getId(), item);
if (old!=null) {
items.put(old.getId(), old);
throw new IllegalStateException("Already contains item for "+item.getId()+": "+old+" (adding "+item+")");
}
links.put(item.getId(), newLink(item.getId(), item.getName()));
}
public synchronized void addAll(@SuppressWarnings("unchecked") T... items) {
for (T item: items) add(item);
}
public synchronized T update(T item) {
T old = items.put(item.getId(), item);
links.put(item.getId(), newLink(item.getId(), item.getName()));
return old;
}
public synchronized boolean remove(String id) {
items.remove(id);
return links.remove(id)!=null;
}
@SafeVarargs
public static <T extends AbstractResource> BasicResourceLookup<T> of(T ...items) {
BasicResourceLookup<T> result = new BasicResourceLookup<T>();
for (T item: items) result.add(item);
return result;
}
}