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Lucene example source code file (TopGroups.java)
The Lucene TopGroups.java source codepackage org.apache.lucene.search.grouping; /** * 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 org.apache.lucene.search.ScoreDoc; import org.apache.lucene.search.Sort; import org.apache.lucene.search.SortField; import org.apache.lucene.search.TopDocs; /** Represents result returned by a grouping search. * * @lucene.experimental */ public class TopGroups<GROUP_VALUE_TYPE> { /** Number of documents matching the search */ public final int totalHitCount; /** Number of documents grouped into the topN groups */ public final int totalGroupedHitCount; /** The total number of unique groups. If <code>null this value is not computed. */ public final Integer totalGroupCount; /** Group results in groupSort order */ public final GroupDocs<GROUP_VALUE_TYPE>[] groups; /** How groups are sorted against each other */ public final SortField[] groupSort; /** How docs are sorted within each group */ public final SortField[] withinGroupSort; public TopGroups(SortField[] groupSort, SortField[] withinGroupSort, int totalHitCount, int totalGroupedHitCount, GroupDocs<GROUP_VALUE_TYPE>[] groups) { this.groupSort = groupSort; this.withinGroupSort = withinGroupSort; this.totalHitCount = totalHitCount; this.totalGroupedHitCount = totalGroupedHitCount; this.groups = groups; this.totalGroupCount = null; } public TopGroups(TopGroups<GROUP_VALUE_TYPE> oldTopGroups, Integer totalGroupCount) { this.groupSort = oldTopGroups.groupSort; this.withinGroupSort = oldTopGroups.withinGroupSort; this.totalHitCount = oldTopGroups.totalHitCount; this.totalGroupedHitCount = oldTopGroups.totalGroupedHitCount; this.groups = oldTopGroups.groups; this.totalGroupCount = totalGroupCount; } /** Merges an array of TopGroups, for example obtained * from the second-pass collector across multiple * shards. Each TopGroups must have been sorted by the * same groupSort and docSort, and the top groups passed * to all second-pass collectors must be the same. * * <b>NOTE: this cannot merge totalGroupCount; ie the * returned TopGroups will have null totalGroupCount. * * <b>NOTE: the topDocs in each GroupDocs is actually * an instance of TopDocsAndShards */ public static <T> TopGroups Other Lucene examples (source code examples)Here is a short list of links related to this Lucene TopGroups.java source code file: |
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