/**
* Copyright 2009 Google Inc.
*
* Licensed 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.waveprotocol.wave.model.document.operation;
import org.waveprotocol.wave.model.document.operation.util.UpdateMap;
import java.util.Collection;
/**
* A mutation of an <code>Attributes</code> object. This is a map from attribute
* names to attribute values, indicating the attributes whose values should be
* changed and what values they should be assigned, where a null value indicates
* that the corresponding attribute should be removed. The entries in the map
* are sorted by the attribute names, so that the set obtained from entrySet()
* will allow you to easily iterate through the entries in sorted order.
*
* Implementations must be immutable.
*/
public interface AttributesUpdate extends UpdateMap {
public AttributesUpdate composeWith(AttributesUpdate mutation);
public AttributesUpdate exclude(Collection<String> keys);
}