Example usage for org.apache.lucene.index IndexWriter close

List of usage examples for org.apache.lucene.index IndexWriter close

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Introduction

In this page you can find the example usage for org.apache.lucene.index IndexWriter close.

Prototype

@Override
public void close() throws IOException

Source Link

Document

Closes all open resources and releases the write lock.

Usage

From source file:com.common.search.IKAnalyzerDemo.java

License:Apache License

public static void main(String[] args) {
    // Lucene Document
    String fieldName = "text";
    // //from  www.j av a2s. c o  m
    String text = "IK Analyzer ";
    // IKAnalyzer
    Analyzer analyzer = new IKAnalyzer();
    Directory directory = null;
    IndexWriter iwriter = null;
    IndexReader ireader = null;
    IndexSearcher isearcher = null;
    try {
        // 
        directory = new RAMDirectory();
        // IndexWriterConfig
        IndexWriterConfig iwConfig = new IndexWriterConfig(Version.LUCENE_34, analyzer);
        iwConfig.setOpenMode(OpenMode.CREATE_OR_APPEND);
        iwriter = new IndexWriter(directory, iwConfig);
        // 
        Document doc = new Document();
        doc.add(new Field("ID", "10000", Field.Store.YES, Field.Index.NOT_ANALYZED));
        doc.add(new Field(fieldName, text, Field.Store.YES, Field.Index.ANALYZED));
        iwriter.addDocument(doc);
        iwriter.close();
        // **********************************
        // 
        ireader = IndexReader.open(directory);
        isearcher = new IndexSearcher(ireader);
        String keyword = "";
        // QueryParserQuery
        QueryParser qp = new QueryParser(Version.LUCENE_34, fieldName, analyzer);
        qp.setDefaultOperator(QueryParser.AND_OPERATOR);
        Query query = qp.parse(keyword);
        // 5
        TopDocs topDocs = isearcher.search(query, 5);
        System.out.println(" " + topDocs.totalHits);
        // 
        ScoreDoc[] scoreDocs = topDocs.scoreDocs;
        for (int i = 0; i < topDocs.totalHits; i++) {
            Document targetDoc = isearcher.doc(scoreDocs[i].doc);
            System.out.println(" " + targetDoc.toString());
        }
    } catch (CorruptIndexException e) {
        e.printStackTrace();
    } catch (LockObtainFailedException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (ParseException e) {
        e.printStackTrace();
    } finally {
        if (ireader != null) {
            try {
                ireader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (directory != null) {
            try {
                directory.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

From source file:com.company.Indexer.java

License:Apache License

/** Index all text files under a directory. */
public static void main(String[] args) {
    String usage = "java org.apache.lucene.demo.IndexFiles" + " [-index INDEX_PATH] [-docs DOCS_PATH]\n\n"
            + "This indexes the documents in DOCS_PATH, creating a Lucene index"
            + "in INDEX_PATH that can be searched with SearchFiles";
    String indexPath = "index";
    String docsPath = null;/*from  ww  w .j  av  a2 s  .c  o m*/
    boolean create = true;
    for (int i = 0; i < args.length; i++) {
        if ("-index".equals(args[i])) {
            indexPath = args[i + 1];
            i++;
        } else if ("-docs".equals(args[i])) {
            docsPath = args[i + 1];
            i++;
        }
    }

    if (docsPath == null) {
        System.err.println("Usage: " + usage);
        System.exit(1);
    }

    final Path docDir = Paths.get(docsPath);
    if (!Files.isReadable(docDir)) {
        System.out.println("Document directory '" + docDir.toAbsolutePath()
                + "' does not exist or is not readable, please check the path");
        System.exit(1);
    }

    Date start = new Date();
    try {
        System.out.println("Indexing to directory '" + indexPath + "'...");
        PrintWriter tempwriter = new PrintWriter("pathToDocs.txt", "UTF-8");
        tempwriter.print(docsPath);
        tempwriter.close();
        Directory dir = FSDirectory.open(Paths.get(indexPath));
        Analyzer analyzer = new StandardAnalyzer();
        IndexWriterConfig iwc = new IndexWriterConfig(analyzer);

        if (create) {
            // Create a new index in the directory, removing any
            // previously indexed documents:
            iwc.setOpenMode(IndexWriterConfig.OpenMode.CREATE);
        } else {
            // Add new documents to an existing index:
            iwc.setOpenMode(IndexWriterConfig.OpenMode.CREATE_OR_APPEND);
        }

        // Optional: for better indexing performance, if you
        // are indexing many documents, increase the RAM
        // buffer.  But if you do this, increase the max heap
        // size to the JVM (eg add -Xmx512m or -Xmx1g):
        //
        // iwc.setRAMBufferSizeMB(256.0);

        IndexWriter writer = new IndexWriter(dir, iwc);
        indexDocs(writer, docDir);

        // NOTE: if you want to maximize search performance,
        // you can optionally call forceMerge here.  This can be
        // a terribly costly operation, so generally it's only
        // worth it when your index is relatively static (ie
        // you're done adding documents to it):
        //
        // writer.forceMerge(1);

        writer.close();

        Date end = new Date();
        System.out.println(end.getTime() - start.getTime() + " total milliseconds");

    } catch (IOException e) {
        System.out.println(" caught a " + e.getClass() + "\n with message: " + e.getMessage());
    }
}

From source file:com.company.IndexFiles.java

License:Apache License

/** Index all text files under a directory. */
public static void main(String[] args) {
    String usage = "java org.apache.lucene.demo.IndexFiles"
            + " [-index INDEX_PATH] [-docs DOCS_PATH] [-update]\n\n"
            + "This indexes the documents in DOCS_PATH, creating a Lucene index"
            + "in INDEX_PATH that can be searched with SearchFiles";
    String indexPath = "index";
    String docsPath = null;/*from   w  w w .  ja  v  a2s  .  c o  m*/
    boolean create = true;
    for (int i = 0; i < args.length; i++) {
        if ("-index".equals(args[i])) {
            indexPath = args[i + 1];
            i++;
        } else if ("-docs".equals(args[i])) {
            docsPath = args[i + 1];
            i++;
        } else if ("-update".equals(args[i])) {
            create = false;
        }
    }

    if (docsPath == null) {
        System.err.println("Usage: " + usage);
        System.exit(1);
    }

    final Path docDir = Paths.get(docsPath);
    if (!Files.isReadable(docDir)) {
        System.out.println("Document directory '" + docDir.toAbsolutePath()
                + "' does not exist or is not readable, please check the path");
        System.exit(1);
    }

    Date start = new Date();
    try {
        System.out.println("Indexing to directory '" + indexPath + "'...");

        Directory dir = FSDirectory.open(Paths.get(indexPath));
        Analyzer analyzer = new StandardAnalyzer();
        IndexWriterConfig iwc = new IndexWriterConfig(analyzer);

        if (create) {
            // Create a new index in the directory, removing any
            // previously indexed documents:
            iwc.setOpenMode(IndexWriterConfig.OpenMode.CREATE);
        } else {
            // Add new documents to an existing index:
            iwc.setOpenMode(IndexWriterConfig.OpenMode.CREATE_OR_APPEND);
        }

        // Optional: for better indexing performance, if you
        // are indexing many documents, increase the RAM
        // buffer.  But if you do this, increase the max heap
        // size to the JVM (eg add -Xmx512m or -Xmx1g):
        //
        // iwc.setRAMBufferSizeMB(256.0);

        IndexWriter writer = new IndexWriter(dir, iwc);
        indexDocs(writer, docDir);

        // NOTE: if you want to maximize search performance,
        // you can optionally call forceMerge here.  This can be
        // a terribly costly operation, so generally it's only
        // worth it when your index is relatively static (ie
        // you're done adding documents to it):
        //
        // writer.forceMerge(1);

        writer.close();

        Date end = new Date();
        System.out.println(end.getTime() - start.getTime() + " total milliseconds");

    } catch (IOException e) {
        System.out.println(" caught a " + e.getClass() + "\n with message: " + e.getMessage());
    }
}

From source file:com.czw.search.lucene.example.facet.AssociationsFacetsExample.java

License:Apache License

/** Build the example index. */
private void index() throws IOException {
    IndexWriterConfig iwc = new IndexWriterConfig(new WhitespaceAnalyzer()).setOpenMode(OpenMode.CREATE);
    IndexWriter indexWriter = new IndexWriter(indexDir, iwc);

    // Writes facet ords to a separate directory from the main index
    DirectoryTaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir);

    Document doc = new Document();
    // 3 occurrences for tag 'lucene'
    doc.add(new IntAssociationFacetField(3, "tags", "lucene"));
    // 87% confidence level of genre 'computing'
    doc.add(new FloatAssociationFacetField(0.87f, "genre", "computing"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    doc = new Document();
    // 1 occurrence for tag 'lucene'
    doc.add(new IntAssociationFacetField(1, "tags", "lucene"));
    // 2 occurrence for tag 'solr'
    doc.add(new IntAssociationFacetField(2, "tags", "solr"));
    // 75% confidence level of genre 'computing'
    doc.add(new FloatAssociationFacetField(0.75f, "genre", "computing"));
    // 34% confidence level of genre 'software'
    doc.add(new FloatAssociationFacetField(0.34f, "genre", "software"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    indexWriter.close();
    taxoWriter.close();/*from  w  ww .  j  a  v a  2 s .c  om*/
}

From source file:com.czw.search.lucene.example.facet.DistanceFacetsExample.java

License:Apache License

/** Build the example index. */
public void index() throws IOException {
    IndexWriter writer = new IndexWriter(indexDir,
            new IndexWriterConfig(new WhitespaceAnalyzer()).setOpenMode(OpenMode.CREATE));

    // TODO: we could index in radians instead ... saves all the conversions in getBoundingBoxFilter

    // Add documents with latitude/longitude location:
    // we index these both as DoublePoints (for bounding box/ranges) and as NumericDocValuesFields (for scoring)
    Document doc = new Document();
    doc.add(new DoublePoint("latitude", 40.759011));
    doc.add(new NumericDocValuesField("latitude", Double.doubleToRawLongBits(40.759011)));
    doc.add(new DoublePoint("longitude", -73.9844722));
    doc.add(new NumericDocValuesField("longitude", Double.doubleToRawLongBits(-73.9844722)));
    writer.addDocument(doc);/* ww  w.  j a  va 2  s  .  com*/

    doc = new Document();
    doc.add(new DoublePoint("latitude", 40.718266));
    doc.add(new NumericDocValuesField("latitude", Double.doubleToRawLongBits(40.718266)));
    doc.add(new DoublePoint("longitude", -74.007819));
    doc.add(new NumericDocValuesField("longitude", Double.doubleToRawLongBits(-74.007819)));
    writer.addDocument(doc);

    doc = new Document();
    doc.add(new DoublePoint("latitude", 40.7051157));
    doc.add(new NumericDocValuesField("latitude", Double.doubleToRawLongBits(40.7051157)));
    doc.add(new DoublePoint("longitude", -74.0088305));
    doc.add(new NumericDocValuesField("longitude", Double.doubleToRawLongBits(-74.0088305)));
    writer.addDocument(doc);

    // Open near-real-time searcher
    searcher = new IndexSearcher(DirectoryReader.open(writer));
    writer.close();
}

From source file:com.czw.search.lucene.example.facet.ExpressionAggregationFacetsExample.java

License:Apache License

/** Build the example index. */
private void index() throws IOException {
    IndexWriter indexWriter = new IndexWriter(indexDir,
            new IndexWriterConfig(new WhitespaceAnalyzer()).setOpenMode(OpenMode.CREATE));

    // Writes facet ords to a separate directory from the main index
    DirectoryTaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir);

    Document doc = new Document();
    doc.add(new TextField("c", "foo bar", Store.NO));
    doc.add(new NumericDocValuesField("popularity", 5L));
    doc.add(new FacetField("A", "B"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    doc = new Document();
    doc.add(new TextField("c", "foo foo bar", Store.NO));
    doc.add(new NumericDocValuesField("popularity", 3L));
    doc.add(new FacetField("A", "C"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    indexWriter.close();
    taxoWriter.close();/*from  ww  w .  ja v  a 2s  .c  o  m*/
}

From source file:com.czw.search.lucene.example.facet.MultiCategoryListsFacetsExample.java

License:Apache License

/** Build the example index. */
private void index() throws IOException {
    IndexWriter indexWriter = new IndexWriter(indexDir,
            new IndexWriterConfig(new WhitespaceAnalyzer()).setOpenMode(OpenMode.CREATE));

    // Writes facet ords to a separate directory from the main index
    DirectoryTaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir);

    Document doc = new Document();
    doc.add(new FacetField("Author", "Bob"));
    doc.add(new FacetField("Publish Date", "2010", "10", "15"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    doc = new Document();
    doc.add(new FacetField("Author", "Lisa"));
    doc.add(new FacetField("Publish Date", "2010", "10", "20"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    doc = new Document();
    doc.add(new FacetField("Author", "Lisa"));
    doc.add(new FacetField("Publish Date", "2012", "1", "1"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    doc = new Document();
    doc.add(new FacetField("Author", "Susan"));
    doc.add(new FacetField("Publish Date", "2012", "1", "7"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    doc = new Document();
    doc.add(new FacetField("Author", "Frank"));
    doc.add(new FacetField("Publish Date", "1999", "5", "5"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    indexWriter.close();
    taxoWriter.close();/*from   w w  w  . jav  a2 s.  c  o m*/
}

From source file:com.czw.search.lucene.example.facet.RangeFacetsExample.java

License:Apache License

/** Build the example index. */
public void index() throws IOException {
    IndexWriter indexWriter = new IndexWriter(indexDir,
            new IndexWriterConfig(new WhitespaceAnalyzer()).setOpenMode(OpenMode.CREATE));

    // Add documents with a fake timestamp, 1000 sec before
    // "now", 2000 sec before "now", ...:
    for (int i = 0; i < 100; i++) {
        Document doc = new Document();
        long then = nowSec - i * 1000;
        // Add as doc values field, so we can compute range facets:
        doc.add(new NumericDocValuesField("timestamp", then));
        // Add as numeric field so we can drill-down:
        doc.add(new LongPoint("timestamp", then));
        indexWriter.addDocument(doc);/* w  ww  . j av  a2s.c o m*/
    }

    // Open near-real-time searcher
    searcher = new IndexSearcher(DirectoryReader.open(indexWriter));
    indexWriter.close();
}

From source file:com.czw.search.lucene.example.facet.SimpleFacetsExample.java

License:Apache License

/**
 * Build the example index./*from w  w  w .ja v  a2 s. c  o m*/
 */
private void index() throws IOException {
    IndexWriter indexWriter = new IndexWriter(indexDir,
            new IndexWriterConfig(new WhitespaceAnalyzer()).setOpenMode(OpenMode.CREATE));

    // Writes facet ords to a separate directory from the main index
    DirectoryTaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir);

    Document doc = new Document();
    doc.add(new FacetField("Author", "Bob"));
    doc.add(new FacetField("Publish Date", "2010", "10", "15"));
    doc.add(new FacetField("Category", "art"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    doc = new Document();
    doc.add(new FacetField("Author", "Bob"));
    doc.add(new FacetField("Publish Date", "2010", "10", "15"));
    doc.add(new FacetField("Category", "biography"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    doc = new Document();
    doc.add(new FacetField("Author", "Lisa"));
    doc.add(new FacetField("Publish Date", "2010", "10", "20"));
    doc.add(new FacetField("Category", "fiction"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    doc = new Document();
    doc.add(new FacetField("Author", "Lisa"));
    doc.add(new FacetField("Publish Date", "2012", "1", "1"));
    doc.add(new FacetField("Category", "food"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    doc = new Document();
    doc.add(new FacetField("Author", "Susan"));
    doc.add(new FacetField("Publish Date", "2012", "1", "7"));
    doc.add(new FacetField("Category", "science"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    doc = new Document();
    doc.add(new FacetField("Author", "Frank"));
    doc.add(new FacetField("Publish Date", "1999", "5", "5"));
    doc.add(new FacetField("Category", "crime"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    doc = new Document();
    doc.add(new FacetField("Author", "Frank"));
    doc.add(new FacetField("Publish Date", "2011", "5", "15"));
    doc.add(new FacetField("Category", "fiction"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    doc = new Document();
    doc.add(new FacetField("Author", "Frank"));
    doc.add(new FacetField("Publish Date", "2017", "6", "5"));
    doc.add(new FacetField("Category", "science"));
    indexWriter.addDocument(config.build(taxoWriter, doc));

    indexWriter.close();
    taxoWriter.close();
}

From source file:com.czw.search.lucene.example.facet.SimpleSortedSetFacetsExample.java

License:Apache License

/**
 * Build the example index./*from  w ww .j av  a2  s  . c o  m*/
 */
private void index() throws IOException {
    IndexWriter indexWriter = new IndexWriter(indexDir,
            new IndexWriterConfig(new WhitespaceAnalyzer()).setOpenMode(OpenMode.CREATE));

    Document doc = new Document();
    doc.add(new SortedSetDocValuesFacetField("Author", "Bob"));
    doc.add(new SortedSetDocValuesFacetField("Publish Year", "2010"));
    indexWriter.addDocument(config.build(doc));

    doc = new Document();
    doc.add(new SortedSetDocValuesFacetField("Author", "Lisa"));
    doc.add(new SortedSetDocValuesFacetField("Publish Year", "2010"));
    indexWriter.addDocument(config.build(doc));

    doc = new Document();
    doc.add(new SortedSetDocValuesFacetField("Author", "Lisa"));
    doc.add(new SortedSetDocValuesFacetField("Publish Year", "2012"));
    indexWriter.addDocument(config.build(doc));

    doc = new Document();
    doc.add(new SortedSetDocValuesFacetField("Author", "Susan"));
    doc.add(new SortedSetDocValuesFacetField("Publish Year", "2012"));
    indexWriter.addDocument(config.build(doc));

    doc = new Document();
    doc.add(new SortedSetDocValuesFacetField("Author", "Frank"));
    doc.add(new SortedSetDocValuesFacetField("Publish Year", "1999"));
    indexWriter.addDocument(config.build(doc));

    indexWriter.close();
}