40 lines
1.3 KiB
Java
40 lines
1.3 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.gossip.crdt;
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/**
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*
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* Immutable type
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*
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* @param <SetType>
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* @param <MergeReturnType>
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*/
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public interface Crdt<SetType, MergeReturnType extends Crdt<SetType, MergeReturnType>> {
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MergeReturnType merge(MergeReturnType other);
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SetType value();
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/**
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* Called to self optimize. Some CRDTs may use some mechanism to clean up be
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* removing obsolete data outside the scope of merging. IE this could clean up
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* temporal values, old copies etc.
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* @return the Crdt structure optimized
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*/
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MergeReturnType optimize();
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}
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