/*
* 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.core.config;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;
public interface StructuredConfigKey {
/** for internal use */
Object applyValueToMap(Object value, @SuppressWarnings("rawtypes") Map target);
boolean acceptsKeyMatch(Object contender);
boolean acceptsSubkey(Object contender);
boolean acceptsSubkeyStronglyTyped(Object contender);
public static class StructuredModifications {
/** when passed as a value to a StructuredConfigKey, causes the structure to be cleared */
@SuppressWarnings("unchecked")
public static final <U extends StructuredConfigKey,T extends StructuredModification<U>> T clearing() {
return (T) new StructuredModification<U>() {
@SuppressWarnings("rawtypes")
@Override
public Object applyToKeyInMap(U key, Map target) {
Set keysToRemove = new LinkedHashSet();
for (Object k : target.keySet()) {
if (key.acceptsKeyMatch(k) || key.acceptsSubkey(k))
keysToRemove.add(k);
}
for (Object k : keysToRemove) {
target.remove(k);
}
return null;
}
};
}
}
public interface StructuredModification<T extends StructuredConfigKey> {
Object applyToKeyInMap(T key, @SuppressWarnings("rawtypes") Map target);
}
}