{"id":119489,"date":"2024-03-23T18:46:10","date_gmt":"2024-03-23T09:46:10","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/%eb%a3%a8%ec%8b%a0%ec%9d%84-%ed%86%b5%ed%95%9c-%ea%b7%b8%eb%a3%b9%ed%99%94-%ed%86%b5%ea%b3%84-%ea%b5%ac%ed%98%84-%eb%b0%a9%ec%8b%9d\/"},"modified":"2024-03-28T11:12:06","modified_gmt":"2024-03-28T02:12:06","slug":"%eb%a3%a8%ec%8b%a0%ec%9d%84-%ed%86%b5%ed%95%9c-%ea%b7%b8%eb%a3%b9%ed%99%94-%ed%86%b5%ea%b3%84-%ea%b5%ac%ed%98%84-%eb%b0%a9%ec%8b%9d","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/%eb%a3%a8%ec%8b%a0%ec%9d%84-%ed%86%b5%ed%95%9c-%ea%b7%b8%eb%a3%b9%ed%99%94-%ed%86%b5%ea%b3%84-%ea%b5%ac%ed%98%84-%eb%b0%a9%ec%8b%9d\/","title":{"rendered":"\ub8e8\uc2e0\uc744 \ud1b5\ud55c \uadf8\ub8f9\ud654 \ud1b5\uacc4 \uad6c\ud604 \ubc29\uc2dd"},"content":{"rendered":"<p>Lucene\u3067\u306f\u3001Facets\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066\u30b0\u30eb\u30fc\u30d7\u5316\u7d71\u8a08\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002Facets\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u3001\u30b0\u30eb\u30fc\u30d7\u5316\u7d71\u8a08\u64cd\u4f5c\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306bFacetField\u3068FacetResult\u30af\u30e9\u30b9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306b\u5217\u6319\u3059\u308b\u306e\u306f\u3001Facets\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u7d71\u8a08\u3092\u96c6\u8a08\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3059\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> org.apache.lucene.analysis.standard.StandardAnalyzer;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.document.Document;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.document.Field;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.document.StringField;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.FacetField;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.Facets;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.FacetsCollector;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.FacetsConfig;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.LabelAndValue;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.sortedset.DefaultSortedSetDocValuesReaderState;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.sortedset.SortedSetDocValuesFacetCounts;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.sortedset.SortedSetDocValuesFacetField;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.sortedset.SortedSetDocValuesReaderState;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.taxonomy.TaxonomyFacetSumValueSource;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyReader;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyWriter;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.taxonomy.directory.NRTCachingDirectoryTaxonomyWriter;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.taxonomy.directory.OrdinalPolicy;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.facet.taxonomy.directory.OrdinalPolicy.Indexer;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.index.IndexWriter;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.index.IndexWriterConfig;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.index.Term;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.index.IndexWriterConfig.OpenMode;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.search.IndexSearcher;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.search.MatchAllDocsQuery;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.search.Query;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.search.Sort;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.search.SortField;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.search.TopDocs;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.store.Directory;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.store.FSDirectory;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.lucene.util.BytesRef;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.IOException;\r\n<span class=\"hljs-keyword\">import<\/span> java.nio.file.Paths;\r\n<span class=\"hljs-keyword\">import<\/span> java.util.HashMap;\r\n<span class=\"hljs-keyword\">import<\/span> java.util.Map;\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">LuceneGroupByDemo<\/span> {\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> <span class=\"hljs-keyword\">throws<\/span> IOException {\r\n<span class=\"hljs-comment\">\/\/ \u521b\u5efa\u7d22\u5f15\u548c\u5206\u7c7b\u76ee\u5f55<\/span>\r\n<span class=\"hljs-type\">Directory<\/span> <span class=\"hljs-variable\">indexDir<\/span> <span class=\"hljs-operator\">=<\/span> FSDirectory.open(Paths.get(<span class=\"hljs-string\">\"index\"<\/span>));\r\n<span class=\"hljs-type\">Directory<\/span> <span class=\"hljs-variable\">taxoDir<\/span> <span class=\"hljs-operator\">=<\/span> FSDirectory.open(Paths.get(<span class=\"hljs-string\">\"taxonomy\"<\/span>));\r\n<span class=\"hljs-comment\">\/\/ \u914d\u7f6e\u7d22\u5f15\u548c\u5206\u7c7b\u5199\u5165\u5668<\/span>\r\n<span class=\"hljs-type\">IndexWriterConfig<\/span> <span class=\"hljs-variable\">indexWriterConfig<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">IndexWriterConfig<\/span>(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">StandardAnalyzer<\/span>());\r\nindexWriterConfig.setOpenMode(OpenMode.CREATE_OR_APPEND);\r\n<span class=\"hljs-type\">IndexWriter<\/span> <span class=\"hljs-variable\">indexWriter<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">IndexWriter<\/span>(indexDir, indexWriterConfig);\r\n<span class=\"hljs-type\">DirectoryTaxonomyWriter<\/span> <span class=\"hljs-variable\">taxoWriter<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">NRTCachingDirectoryTaxonomyWriter<\/span>(taxoDir);\r\n<span class=\"hljs-comment\">\/\/ \u521b\u5efa\u5206\u7c7b\u7d22\u5f15<\/span>\r\n<span class=\"hljs-type\">OrdinalPolicy<\/span> <span class=\"hljs-variable\">ordinalPolicy<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">OrdinalPolicy<\/span>.DirectPolicy();\r\n<span class=\"hljs-type\">SortedSetDocValuesReaderState<\/span> <span class=\"hljs-variable\">state<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">DefaultSortedSetDocValuesReaderState<\/span>(indexWriter.getReader(), ordinalPolicy);\r\n<span class=\"hljs-type\">SortedSetDocValuesFacetField<\/span> <span class=\"hljs-variable\">field<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">SortedSetDocValuesFacetField<\/span>(<span class=\"hljs-string\">\"category\"<\/span>, <span class=\"hljs-string\">\"Books\"<\/span>, <span class=\"hljs-string\">\"Children's\"<\/span>);\r\nindexWriter.addDocument(state.facetDocValuesField(field));\r\nfield = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">SortedSetDocValuesFacetField<\/span>(<span class=\"hljs-string\">\"category\"<\/span>, <span class=\"hljs-string\">\"Books\"<\/span>, <span class=\"hljs-string\">\"Fiction\"<\/span>);\r\nindexWriter.addDocument(state.facetDocValuesField(field));\r\nfield = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">SortedSetDocValuesFacetField<\/span>(<span class=\"hljs-string\">\"category\"<\/span>, <span class=\"hljs-string\">\"Books\"<\/span>, <span class=\"hljs-string\">\"Non-fiction\"<\/span>);\r\nindexWriter.addDocument(state.facetDocValuesField(field));\r\nindexWriter.commit();\r\n<span class=\"hljs-comment\">\/\/ \u521b\u5efa\u5206\u7c7b\u8bfb\u53d6\u5668\u548cFacetsConfig<\/span>\r\n<span class=\"hljs-type\">DirectoryTaxonomyReader<\/span> <span class=\"hljs-variable\">taxoReader<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">DirectoryTaxonomyReader<\/span>(taxoWriter);\r\n<span class=\"hljs-type\">FacetsConfig<\/span> <span class=\"hljs-variable\">config<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">FacetsConfig<\/span>();\r\n<span class=\"hljs-comment\">\/\/ \u521b\u5efaFacetsCollector\u548cFacets<\/span>\r\n<span class=\"hljs-type\">FacetsCollector<\/span> <span class=\"hljs-variable\">facetsCollector<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">FacetsCollector<\/span>();\r\n<span class=\"hljs-type\">IndexSearcher<\/span> <span class=\"hljs-variable\">searcher<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">IndexSearcher<\/span>(indexWriter.getReader());\r\n<span class=\"hljs-comment\">\/\/ \u6267\u884c\u67e5\u8be2<\/span>\r\n<span class=\"hljs-type\">Query<\/span> <span class=\"hljs-variable\">query<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">MatchAllDocsQuery<\/span>();\r\nsearcher.search(query, facetsCollector);\r\n<span class=\"hljs-type\">Facets<\/span> <span class=\"hljs-variable\">facets<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">SortedSetDocValuesFacetCounts<\/span>(state, facetsCollector);\r\n<span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u5206\u7ec4\u7edf\u8ba1\u7ed3\u679c<\/span>\r\nString[] categories = {<span class=\"hljs-string\">\"Books\"<\/span>};\r\nMap&lt;String, Integer&gt; categoryCounts = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">HashMap<\/span>&lt;&gt;();\r\n<span class=\"hljs-keyword\">for<\/span> (String category : categories) {\r\n<span class=\"hljs-type\">FacetResult<\/span> <span class=\"hljs-variable\">facetResult<\/span> <span class=\"hljs-operator\">=<\/span> facets.getTopChildren(<span class=\"hljs-number\">10<\/span>, category);\r\n<span class=\"hljs-keyword\">for<\/span> (LabelAndValue labelAndValue : facetResult.labelValues) {\r\ncategoryCounts.put(labelAndValue.label, (<span class=\"hljs-type\">int<\/span>) labelAndValue.value);\r\n}\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u6253\u5370\u5206\u7ec4\u7edf\u8ba1\u7ed3\u679c<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> (Map.Entry&lt;String, Integer&gt; entry : categoryCounts.entrySet()) {\r\nSystem.out.println(entry.getKey() + <span class=\"hljs-string\">\": \"<\/span> + entry.getValue());\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u5173\u95ed\u8d44\u6e90<\/span>\r\nindexWriter.close();\r\ntaxoWriter.close();\r\ntaxo\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Lucene\u3067\u306f\u3001Facets\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066\u30b0\u30eb\u30fc\u30d7\u5316\u7d71\u8a08\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002Facets\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u3001\u30b0\u30eb\u30fc\u30d7\u5316\u7d71\u8a08\u64cd\u4f5c\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306bFacetField\u3068FacetResult\u30af\u30e9\u30b9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u4ee5\u4e0b\u306b\u5217\u6319 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-119489","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\ub8e8\uc2e0\uc744 \ud1b5\ud55c \uadf8\ub8f9\ud654 \ud1b5\uacc4 \uad6c\ud604 \ubc29\uc2dd - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/\ub8e8\uc2e0\uc744-\ud1b5\ud55c-\uadf8\ub8f9\ud654-\ud1b5\uacc4-\uad6c\ud604-\ubc29\uc2dd\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" 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