1 package org.apache.lucene.benchmark.byTask.feeds;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
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20 import java.io.IOException;
23 * Represents content from a specified source, such as TREC, Reuters etc. A
24 * {@link ContentSource} is responsible for creating {@link DocData} objects for
25 * its documents to be consumed by {@link DocMaker}. It also keeps track
26 * of various statistics, such as how many documents were generated, size in
29 * For supported configuration parameters see {@link ContentItemsSource}.
31 public abstract class ContentSource extends ContentItemsSource {
33 /** Returns the next {@link DocData} from the content source.
34 * Implementations must account for multi-threading, as multiple threads
35 * can call this method simultaneously. */
36 public abstract DocData getNextDocData(DocData docData) throws NoMoreDataException, IOException;