?? docfieldconsumer.java
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package org.apache.lucene.index;/** * 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. */import java.io.IOException;import java.util.Map;abstract class DocFieldConsumer { FieldInfos fieldInfos; /** Called when DocumentsWriter decides to create a new * segment */ abstract void flush(Map threadsAndFields, DocumentsWriter.FlushState state) throws IOException; /** Called when DocumentsWriter decides to close the doc * stores */ abstract void closeDocStore(DocumentsWriter.FlushState state) throws IOException; /** Called when an aborting exception is hit */ abstract void abort(); /** Add a new thread */ abstract DocFieldConsumerPerThread addThread(DocFieldProcessorPerThread docFieldProcessorPerThread) throws IOException; /** Called when DocumentsWriter is using too much RAM. * The consumer should free RAM, if possible, returning * true if any RAM was in fact freed. */ abstract boolean freeRAM(); void setFieldInfos(FieldInfos fieldInfos) { this.fieldInfos = fieldInfos; }}
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