39 lines
1.3 KiB
Java
39 lines
1.3 KiB
Java
/*******************************************************************************
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* Copyright 2010 Cees De Groot, Alex Boisvert, Jan Kotek
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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.jdbm;
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import java.io.IOException;
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/**
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* An listener notifed when record is inserted, updated or removed.
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* <p/>
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* NOTE: this class was used in JDBM2 to support secondary indexes
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* JDBM3 does not have a secondary indexes, so this class is not publicly exposed.
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*
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* @param <K> key type
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* @param <V> value type
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* @author Jan Kotek
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*/
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interface RecordListener<K, V> {
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void recordInserted(K key, V value) throws IOException;
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void recordUpdated(K key, V oldValue, V newValue) throws IOException;
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void recordRemoved(K key, V value) throws IOException;
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}
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