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POPhraseQuery Not working Lucene 4.5.0
 

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  1. POPhraseQuery Not working Lucene 4.5.0
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    <p>I tried to work with <code>PhraseQuery</code> but could not get hits from search. I am using <code>Lucene 4.5.0</code>. </p> <p><strong>My Indexing code</strong></p> <pre><code>private IndexWriter writer; public LuceneIndexSF(final String indexDir) throws IOException { Analyzer analyzer = new KeywordAnalyzer(); IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_45, analyzer); Directory directory = FSDirectory.open(new File(indexDir)); writer = new IndexWriter(directory, config); } private Document getDocument(File f, String line, int lineNum) throws IOException { Document doc = new Document(); Field field = null; if (line != null &amp;&amp; line.split(DELIMITER).length &gt;= 5) { String[] lineValues = line.split(DELIMITER); field = new Field("name", line.split("\t")[1], TextField.TYPE_STORED); doc.add(field); if (lineValues[2] != null &amp;&amp; !lineValues[2].trim().isEmpty()) { field = new Field("ref", lineValues[2], TextField.TYPE_STORED); doc.add(field); } field = new Field("type", lineValues[3], TextField.TYPE_STORED); doc.add(field); field = new LongField("code", Long.parseLong(lineValues[4]), LongField.TYPE_STORED); doc.add(field); if (lineValues.length == 7 &amp;&amp; lineValues[5] != null &amp;&amp; !lineValues[5].trim().isEmpty()) { field = new Field("alias1", lineValues[5], TextField.TYPE_STORED); doc.add(field); } if (lineValues.length == 7 &amp;&amp; lineValues[6] != null &amp;&amp; !lineValues[6].trim().isEmpty()) { field = new Field("alias2", lineValues[6], TextField.TYPE_STORED); doc.add(field); } } field = new IntField("linenum", lineNum, IntField.TYPE_STORED); doc.add(field); return doc; } .... and other code where i add document in writer using writer.addDocument(doc); </code></pre> <p><strong>My Searching Code</strong></p> <pre><code>private static void search(String indexDir, String quer) throws IOException, ParseException { IndexReader inxRead = DirectoryReader.open(FSDirectory.open(new File( indexDir))); IndexSearcher is = new IndexSearcher(inxRead); String[] termArr = quer.split(" "); PhraseQuery phraseQuery= new PhraseQuery(); for(int inx = 0; inx &lt; termArr.length; inx++){ phraseQuery.add(new Term("name", termArr[inx])); } phraseQuery.setSlop(4); long start = System.currentTimeMillis(); TopDocs hits = is.search(phraseQuery, 1000); long end = System.currentTimeMillis(); System.err.println("Parser&gt; Found " + hits.totalHits + " document(s) (in " + (end - start) + " milliseconds) that matched query '" + multiQuery + "':"); for (ScoreDoc scoreDoc : hits.scoreDocs) { Document doc = is.doc(scoreDoc.doc); System.out.println("Parser&gt; " + scoreDoc.score + " :: " + doc.get("type") + " - " + doc.get("code") + " - " + doc.get("name") + ", " + doc.get("linenum")); } inxRead.close(); } </code></pre> <p>Please tell me if i am doing any thing wrong.</p> <p><strong>Edit</strong></p> <p>also tried with Standard Analyzer still not results</p> <pre><code>Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_45); </code></pre> <p><strong>Solution</strong></p> <p>According to Arun's answer <code>PhraseQuery</code> to work properly requires Analyzer which Tokenize each word in <code>Document</code>'s <code>Field</code> for my case i used <code>LowerCaseFilter</code> with making all queries lower case so that it can work without case sensitivity. And used <code>EdgeNGramTokenFilter</code> which for auto completion purposes.</p> <pre><code>public LuceneIndexSF(final String indexDir) throws IOException { Analyzer analyzer = new Analyzer() { @Override protected TokenStreamComponents createComponents(String fieldName, java.io.Reader reader) { Tokenizer source = new StandardTokenizer(Version.LUCENE_45, reader); TokenStream result = new StandardFilter(Version.LUCENE_45, source); result = new LowerCaseFilter(Version.LUCENE_45, result); result = new EdgeNGramTokenFilter(Version.LUCENE_45, result, 1, 20); return new TokenStreamComponents(source, result); } }; IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_45, analyzer); Directory directory = FSDirectory.open(new File(indexDir)); writer = new IndexWriter(directory, config); } </code></pre> <p><strong>My final search method</strong></p> <pre><code>private static void search(String indexDir, String quer) throws IOException, ParseException { IndexReader inxRead = DirectoryReader.open(FSDirectory.open(new File( indexDir))); IndexSearcher is = new IndexSearcher(inxRead); String[] termArr = quer.split(" "); PhraseQuery query1 = new PhraseQuery(); PhraseQuery query2 = new PhraseQuery(); PhraseQuery query3 = new PhraseQuery(); for (int inx = 0; inx &lt; termArr.length; inx++) { query1.add(new Term(SchoolFinderConstant.ENTITY_NAME,termArr[inx]),inx); query2.add(new Term(SchoolFinderConstant.ENTITY_ALIAS1,termArr[inx]),inx); query3.add(new Term(SchoolFinderConstant.ENTITY_ALIAS2,termArr[inx]),inx); } BooleanQuery mainQuery = new BooleanQuery(); mainQuery.add(query1, Occur.SHOULD); mainQuery.add(query2, Occur.SHOULD); mainQuery.add(query3, Occur.SHOULD); long start = System.currentTimeMillis(); TopDocs hits = is.search(mainQuery, 1000); long end = System.currentTimeMillis(); System.err.println("Parser&gt; Found " + hits.totalHits + " document(s) (in " + (end - start) + " milliseconds) that matched query '" + multiQuery + "':"); for (ScoreDoc scoreDoc : hits.scoreDocs) { Document doc = is.doc(scoreDoc.doc); System.out.println("Parser&gt; " + scoreDoc.score + " :: " + doc.get("type") + " - " + doc.get("code") + " - " + doc.get("name") + ", " + doc.get("linenum")); } inxRead.close(); } </code></pre>
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    1. USYogesh
    1. USYogesh
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    1. CODid you check if String[] lineValues = line.split(DELIMITER); field = new Field("name", line.split("\t")[1], TextField.TYPE_STORED); part is sending in proper value that you think it is indexing? specifically look intoline.split("\t")[1] , if evrything good can you post full Java classes of your code some where with a line that can be used for testing so that i can give it a spin to see what is wrong?
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      1. POPhraseQuery Not working Lucene 4.5.0
      1. USArun
    2. CO@Arun yes it does provide proper values, i have checked it also weird thing is search works proper with `MultiFieldQueryParser` but not with `PhraseQuery` if you need this is single line "7044 International General Certificate of Secondary Education Board 6 IGCSE,University of Cambridge International Examinations" that you can perform test on
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      1. POPhraseQuery Not working Lucene 4.5.0
      1. USYogesh
 

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