?? iindexupdater.java
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/** * 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.hadoop.contrib.dlucene;import java.io.IOException;import org.apache.lucene.document.Document;import org.apache.lucene.index.Term;public interface IIndexUpdater { /** * Add a document to an index. * * @param doc the document * @return the shard name * @throws IOException */ public void addDocument(Document doc) throws IOException; /** * Remove documents from an index. * * @param term the search term * @return the number of documents removed * @throws IOException */ public int removeDocuments(Term term) throws IOException; /** * Commit changes to an index. * * @throws IOException */ public void commit() throws IOException;}
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