Example usage for org.apache.lucene.index DirectoryReader open

Introduction

In this page you can find the example usage for org.apache.lucene.index DirectoryReader open.

Prototype

public static DirectoryReader open(final IndexCommit commit, Map<String, String> readerAttributes)
        throws IOException 

Source Link

Document

Expert: returns an IndexReader reading the index in the given IndexCommit .

Usage

From source file:com.orientechnologies.lucene.tx.OLuceneTxChangesAbstract.java

License:Apache License

public IndexSearcher searcher() {
    // TODO optimize
    try {/*from  w  w w .  j  a  va 2s. com*/
        return new IndexSearcher(DirectoryReader.open(writer, true));
    } catch (IOException e) {
        OLogManager.instance().error(this, "Error during searcher instantiation", e);
    }

    return null;
}

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From source file:com.orientechnologies.lucene.tx.OLuceneTxChangesAbstract.java

License:Apache License

@Override
public long deletedDocs(Query query, Filter filter) {

    try {//from   w  w  w  . ja  v  a2s .  c o m
        IndexSearcher indexSearcher = new IndexSearcher(DirectoryReader.open(deletedIdx, true));

        if (filter != null) {
            TopDocs search = indexSearcher.search(query, filter, Integer.MAX_VALUE);
            return search.totalHits;
        } else {
            TopDocs search = indexSearcher.search(query, Integer.MAX_VALUE);
            return search.totalHits;
        }
    } catch (IOException e) {
        OLogManager.instance().error(this, "Error during searcher instantiation", e);
    }

    return 0;
}

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From source file:com.querydsl.lucene5.LuceneQueryTest.java

License:Apache License

@Test
@Ignore/*from  w  w  w.ja va2  s.c o m*/
// FIXME
public void Sorted_By_Different_Locales() throws Exception {
    Document d1 = new Document();
    Document d2 = new Document();
    Document d3 = new Document();
    d1.add(new TextField("sort", "a\u00c4", Store.YES));
    d2.add(new TextField("sort", "ab", Store.YES));
    d3.add(new TextField("sort", "aa", Store.YES));
    writer = createWriter(idx);
    writer.addDocument(d1);
    writer.addDocument(d2);
    writer.addDocument(d3);
    writer.close();

    IndexReader reader = DirectoryReader.open(writer, true);
    searcher = new IndexSearcher(reader);
    query = new LuceneQuery(new LuceneSerializer(true, true, Locale.ENGLISH), searcher);
    assertEquals(3, query.fetch().size());
    List<Document> results = query.where(sort.startsWith("a")).orderBy(sort.asc()).fetch();
    assertEquals(3, results.size());
    assertEquals("aa", results.get(0).getField("sort").stringValue());
    assertEquals("a\u00c4", results.get(1).getField("sort").stringValue());
    assertEquals("ab", results.get(2).getField("sort").stringValue());

    query = new LuceneQuery(new LuceneSerializer(true, true, new Locale("fi", "FI")), searcher);
    results = query.where(sort.startsWith("a")).orderBy(sort.asc()).fetch();
    assertEquals("aa", results.get(0).getField("sort").stringValue());
    assertEquals("ab", results.get(1).getField("sort").stringValue());
    assertEquals("a\u00c4", results.get(2).getField("sort").stringValue());
}

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From source file:com.search.lucene.demo.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 DoubleFields (for bounding box/ranges) and as NumericDocValuesFields (for scoring)
    Document doc = new Document();
    doc.add(new DoubleField("latitude", 40.759011, Field.Store.NO));
    doc.add(new NumericDocValuesField("latitude", Double.doubleToRawLongBits(40.759011)));
    doc.add(new DoubleField("longitude", -73.9844722, Field.Store.NO));
    doc.add(new NumericDocValuesField("longitude", Double.doubleToRawLongBits(-73.9844722)));
    writer.addDocument(doc);//from w w  w .ja va 2 s  .  com

    doc = new Document();
    doc.add(new DoubleField("latitude", 40.718266, Field.Store.NO));
    doc.add(new NumericDocValuesField("latitude", Double.doubleToRawLongBits(40.718266)));
    doc.add(new DoubleField("longitude", -74.007819, Field.Store.NO));
    doc.add(new NumericDocValuesField("longitude", Double.doubleToRawLongBits(-74.007819)));
    writer.addDocument(doc);

    doc = new Document();
    doc.add(new DoubleField("latitude", 40.7051157, Field.Store.NO));
    doc.add(new NumericDocValuesField("latitude", Double.doubleToRawLongBits(40.7051157)));
    doc.add(new DoubleField("longitude", -74.0088305, Field.Store.NO));
    doc.add(new NumericDocValuesField("longitude", Double.doubleToRawLongBits(-74.0088305)));
    writer.addDocument(doc);

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

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From source file:com.search.lucene.demo.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 LongField("timestamp", then, Field.Store.NO));
        indexWriter.addDocument(doc);//from   ww w .ja  v a  2 s.c o m
    }

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

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From source file:com.util.Indexador.java

public List<Publicacion> buscarPublicaciones(String consulta)
        throws IOException, ParseException, java.text.ParseException {
    Publicacion obj;//from w w w.  j a v  a 2 s .co m
    List<Publicacion> listaPub;
    this.reader2 = DirectoryReader.open(this.writer2, true);
    this.searcher2 = new IndexSearcher(this.reader2);
    this.qp2 = new QueryParser(Version.LUCENE_41, "Contenido", analizador);
    this.qp2.setDefaultOperator(QueryParser.Operator.AND);
    Query query = this.qp2.parse(consulta);
    TopDocs docs = this.searcher2.search(query, 9999999);

    ScoreDoc[] score = docs.scoreDocs;
    Document dc = null;
    listaPub = new ArrayList<>();
    String[] arrTags = null;
    for (ScoreDoc sd1 : score) {
        obj = new Publicacion();
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

        dc = this.searcher2.doc(sd1.doc);
        obj.setCodPublicacion(Integer.parseInt(dc.get("codPublicacion")));
        obj.setTituloPub(dc.get("titulo"));
        obj.setImagenPub(dc.get("imagen"));
        obj.setF_creacionPub(DateTools.stringToDate(dc.get("f_publicacion")));
        obj.setN_likesPub(Integer.parseInt(dc.get("n_likes")));
        obj.setTagsPublicacion(dc.get("tags"));
        obj.getObjAlbum().setCodAlbum(Integer.parseInt(dc.get("codAlbum")));
        obj.getObjAlbum().setNombreAlb(dc.get("nombre"));
        obj.getObjAlbum().getObjCategoria().setCodCategoria(Integer.parseInt(dc.get("codCategoria")));
        obj.getObjAlbum().getObjCategoria().setNombreCategoria(dc.get("nombrecate"));
        obj.getObjAlbum().getObjPerfil().setCodPerfil(Integer.parseInt(dc.get("codPerfil")));
        obj.getObjAlbum().getObjPerfil().setNombrePer(dc.get("nombres"));
        obj.getObjAlbum().getObjPerfil().setApellidosPer(dc.get("apellidos"));
        obj.getObjAlbum().getObjPerfil().setImagenPer(dc.get("imagenper"));

        arrTags = new Utiles().SepararTags(obj.getTagsPublicacion());
        obj.setArrTags(arrTags);
        arrTags = null;
        listaPub.add(obj);
        obj = null;
    }

    this.writer2.deleteAll();
    this.writer2.close();

    return listaPub;

}

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From source file:com.util.Indexador.java

public List<Perfil> buscarPerfiles(String consulta)
        throws IOException, ParseException, java.text.ParseException {
    Perfil obj;/*from  ww w  . ja v a 2 s  .c o m*/
    List<Perfil> listaPer;
    this.reader2 = DirectoryReader.open(this.writer2, true);
    this.searcher2 = new IndexSearcher(this.reader2);
    this.qp2 = new QueryParser(Version.LUCENE_41, "fullname", analizador);
    this.qp2.setDefaultOperator(QueryParser.Operator.AND);
    this.qp2.setAllowLeadingWildcard(true);
    Query query = this.qp2.parse(consulta + "*");
    TopDocs docs = this.searcher2.search(query, 4);

    ScoreDoc[] score = docs.scoreDocs;
    Document dc = null;
    listaPer = new ArrayList<>();
    for (ScoreDoc sd1 : score) {
        obj = new Perfil();
        dc = this.searcher2.doc(sd1.doc);
        obj.setCodPerfil(Integer.parseInt(dc.get("codPerfil")));
        obj.setNombrePer(dc.get("nombres"));
        obj.setApellidosPer(dc.get("apellidos"));
        obj.setImagenPer(dc.get("imagen"));
        if (dc.get("codDepartamento") != null) {
            obj.getObjDepartamento().setCodDepartamento(Integer.parseInt(dc.get("codDepartamento")));
        }
        if (dc.get("nombredep") != null) {
            obj.getObjDepartamento().setNombre_dep(dc.get("nombredep"));
        }
        listaPer.add(obj);
        obj = null;
    }

    this.writer2.deleteAll();
    this.writer2.close();

    return listaPer;

}

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From source file:com.vmware.dcp.services.common.LuceneBlobIndexService.java

License:Open Source License

private IndexSearcher updateSearcher(String selfLink, IndexWriter w) throws IOException {
    IndexSearcher s = null;/*from w  w w.java 2  s  . c  om*/
    long now = Utils.getNowMicrosUtc();
    synchronized (this.searchSync) {
        s = this.searcher;
        if (s != null && this.searcherUpdateTimeMicros > this.indexUpdateTimeMicros) {
            return s;
        }
    }
    s = new IndexSearcher(DirectoryReader.open(w, true));
    synchronized (this.searchSync) {
        if (this.searcherUpdateTimeMicros < now) {
            this.searcher = s;
            this.searcherUpdateTimeMicros = now;
        }
        return this.searcher;
    }
}

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From source file:com.vmware.dcp.services.common.LuceneDocumentIndexService.java

License:Open Source License

private void doSelfValidationQuery() throws Throwable {
    TermQuery tq = new TermQuery(new Term(ServiceDocument.FIELD_NAME_SELF_LINK, getSelfLink()));
    ServiceDocumentQueryResult rsp = new ServiceDocumentQueryResult();
    queryIndexWithWriter(Operation.createGet(getUri()), EnumSet.of(QueryOption.INCLUDE_ALL_VERSIONS), tq, null,
            null, Integer.MAX_VALUE, 0, null, rsp, ServiceOption.PERSISTENCE,
            new IndexSearcher(DirectoryReader.open(this.writer, true)));
}

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From source file:com.vmware.dcp.services.common.LuceneDocumentIndexService.java

License:Open Source License

private IndexSearcher updateSearcher(String selfLink, int resultLimit, IndexWriter w) throws IOException {

    // We want avoid creating a new IndexSearcher, per query. So we create one in one of
    // following conditions:
    // 1) no searcher for this index exists
    // 2) the query is across many links or multiple version, not a specific one and index was
    // changed//w  ww . j a  va  2 s. c  om
    // 3) the query is for a specific self link AND the self link has seen an update after the
    // last query executed

    IndexSearcher s = null;
    boolean needNewSearcher = false;
    long now = Utils.getNowMicrosUtc();
    synchronized (this.searchSync) {
        s = this.searcher;

        if (s == null) {
            needNewSearcher = true;
        } else if (resultLimit > 1 && this.searcherUpdateTimeMicros < this.indexUpdateTimeMicros) {
            needNewSearcher = true;
        } else if (selfLink != null) {
            SelfLinkInfo sli = this.selfLinks.get(selfLink);
            if (sli != null) {
                needNewSearcher = sli.updateMicros > this.searcherUpdateTimeMicros;
            }
        }

        if (!needNewSearcher) {
            return this.searcher;
        }
    }

    // outside the lock create a new searcher. Another thread might race us and also create a
    // searcher, but that is OK, we will use the most recent one
    s = new IndexSearcher(DirectoryReader.open(w, true));

    if (hasOption(ServiceOption.INSTRUMENTATION)) {
        ServiceStat st = getStat(STAT_NAME_SEARCHER_UPDATE_COUNT);
        adjustStat(st, 1);
    }

    synchronized (this.searchSync) {
        if (this.searcherUpdateTimeMicros < now) {
            this.searcher = s;
            this.searcherUpdateTimeMicros = now;
        }
        return this.searcher;
    }
}

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