Example usage for org.apache.lucene.search PrefixQuery PrefixQuery

Introduction

In this page you can find the example usage for org.apache.lucene.search PrefixQuery PrefixQuery.

Prototype

public PrefixQuery(Term prefix) 

Source Link

Document

Constructs a query for terms starting with prefix.

Usage

From source file:SearcherTest.java

/**
 * PrefixQuery  PrefixQuery?xxx%//from   www .  j av a 2 s  .  c  o  m
 *
 * @throws Exception
 */
@Test
public void testPrefixQuery() throws Exception {
    String searchField = "contents";
    String q = "1license";
    Term t = new Term(searchField, q);
    Query query = new PrefixQuery(t);
    TopDocs hits = is.search(query, 10);
    System.out.println("? '" + q + "'" + hits.totalHits + "");

    for (ScoreDoc scoreDoc : hits.scoreDocs) {
        Document doc = is.doc(scoreDoc.doc);
        System.out.println(doc.get("fullPath"));
    }
}

---

From source file:aos.lucene.search.msc.PrefixQueryTest.java

License:Apache License

public void testPrefix() throws Exception {
    Directory dir = TestUtil.getBookIndexDirectory();
    IndexSearcher searcher = new IndexSearcher(dir);

    Term term = new Term("category", //#A
            "/technology/computers/programming"); //#A
    PrefixQuery query = new PrefixQuery(term); //#A

    TopDocs matches = searcher.search(query, 10); //#A
    int programmingAndBelow = matches.totalHits;

    matches = searcher.search(new TermQuery(term), 10); //#B
    int justProgramming = matches.totalHits;

    assertTrue(programmingAndBelow > justProgramming);
    searcher.close();/* www .j a  va  2s  .co  m*/
    dir.close();
}

---

From source file:br.bireme.ngrams.NGrams.java

public static void deleteDocument(final String id, final NGIndex index) throws IOException {
    if (id == null) {
        throw new NullPointerException("id");
    }/*from  w w w  .j ava  2  s  .  c o m*/
    if (index == null) {
        throw new NullPointerException("index");
    }
    final String idN = Tools.limitSize(Tools.normalize(id, OCC_SEPARATOR), MAX_NG_TEXT_SIZE).trim();

    try (IndexWriter writer = index.getIndexWriter(true)) {
        final Query query;
        if (id.trim().endsWith("*")) { // delete all documents with same prefix
            query = new PrefixQuery(new Term("id", idN.substring(0, idN.length() - 1)));
        } else {
            query = new TermQuery(new Term("id", idN));
        }

        writer.deleteDocuments(query);
        writer.commit();
    }
}

---

From source file:br.ufmt.harmonizacao.implementer.PatenteeSearcher.java

public List<String> search(String field, String value) {
    try {//from ww w .j  a  v a 2 s.  co m
        long start = System.currentTimeMillis();
        TokenStream stream = analyzer.tokenStream(field, new StringReader(value));
        CharTermAttribute attr = stream.getAttribute(CharTermAttribute.class);
        stream.reset();
        String valor = "";
        while (stream.incrementToken()) {
            valor = valor + attr.toString() + ' ';
        }
        BooleanQuery bq = new BooleanQuery();
        BooleanQuery acronymBq = null;
        String query = "";
        BooleanQuery wrapBq = new BooleanQuery();
        String[] tokens = valor.split(" ");
        for (int i = 0; i < tokens.length; i++) {
            if (tokens.length >= 2) {
                acronymBq = new BooleanQuery();
                switch (i) {
                case 0:
                    acronymBq.add(new PrefixQuery(new Term(field, tokens[i])), BooleanClause.Occur.MUST);
                    bq.add(new PrefixQuery(new Term(field, tokens[i])), BooleanClause.Occur.SHOULD);
                    break;
                case 1:
                    acronymBq.add(new FuzzyQuery(new Term(field, tokens[i])), BooleanClause.Occur.MUST_NOT);
                    bq.add(new FuzzyQuery(new Term(field, tokens[i])), BooleanClause.Occur.SHOULD);
                    bq.add(new LengthQuery(field, valor), BooleanClause.Occur.MUST_NOT);
                    break;
                default:
                    break;
                }
            } else {
                if (tokens[i].length() > 3) {
                    bq.add(new FuzzyQuery(new Term(field, tokens[i])), BooleanClause.Occur.MUST);
                } else {
                    bq.add(new TermQuery(new Term(field, tokens[i])), BooleanClause.Occur.MUST);
                }
            }
        }

        stream.end();
        stream.close();
        // Aqui termina
        // Cria uma fuzzyquery, ela que far a busca de aproximao

        wrapBq.add(bq, BooleanClause.Occur.MUST);
        if (acronymBq != null) {
            //new QueryParser(Version.LUCENE_47, field, new StandardAnalyzer(Version.LUCENE_47)).parse(query)
            wrapBq.add(acronymBq, BooleanClause.Occur.MUST_NOT);
        }
        String queryTime = "Tempo para construo da query : " + (System.currentTimeMillis() - start) + "ms";
        // Pegando os documentos encontrado na pesquisa
        start = System.currentTimeMillis();
        ScoreDoc[] hits = searcher.search(wrapBq, 10).scoreDocs;
        String searchTime = "Tempo para busca : " + (System.currentTimeMillis() - start) + "ms";
        List<String> result = new ArrayList<String>();
        result.add(valor);
        if (hits.length > 0) {
            for (int i = 0; i < hits.length; i++) {
                Document hitDoc = searcher.doc(hits[i].doc);
                result.add(hitDoc.get(field));
            }
        }
        result.add(queryTime);
        result.add(searchTime);
        return result;
    } catch (IOException ex) {
        Logger.getLogger(PatenteeSearcher.class.getName()).log(Level.SEVERE, null, ex);
    }
    return null;
}

---

From source file:brightsolid.solr.plugins.TestTargetPositionQueryFuzzy.java

License:Apache License

public void testTargetPositionPrefix() throws Exception {
    PrefixQuery fq = new PrefixQuery(new Term("field", "tw"));
    SpanQuery stq = new SpanMultiTermQueryWrapper<PrefixQuery>(fq);
    SpanQuery tpq = new SpanTargetPositionQuery(stq, 2);
    TopDocs td = searcher.search(tpq, 10);

    assertEquals(fieldValue(td, 0), "threx one twp");
    assertEquals(3, td.totalHits);/*from   w w w.ja v a  2 s .c  o  m*/
}

---

From source file:com.amalto.core.storage.hibernate.LuceneQueryGenerator.java

License:Open Source License

@Override
public Query visit(final FullText fullText) {
    // TODO Test me on conditions where many types share same field names.
    final Map<String, Boolean> fieldsMap = new HashMap<String, Boolean>();
    for (final ComplexTypeMetadata type : types) {
        type.accept(new DefaultMetadataVisitor<Void>() {

            @Override//  ww w. j  ava  2  s.  c o  m
            public Void visit(ContainedComplexTypeMetadata containedType) {
                super.visit(containedType);
                for (ComplexTypeMetadata subType : containedType.getSubTypes()) {
                    subType.accept(this);
                }
                return null;
            }

            @Override
            public Void visit(ReferenceFieldMetadata referenceField) {
                ComplexTypeMetadata referencedType = referenceField.getReferencedType();
                if (!referencedType.isInstantiable()) {
                    referencedType.accept(this);
                }
                return null;
            }

            @Override
            public Void visit(SimpleTypeFieldMetadata simpleField) {
                if (!Storage.METADATA_TIMESTAMP.equals(simpleField.getName())
                        && !Storage.METADATA_TASK_ID.equals(simpleField.getName())) {
                    if (StorageMetadataUtils.isValueSearchable(fullText.getValue(), simpleField)) {
                        fieldsMap.put(simpleField.getName(), simpleField.isKey());
                    }
                }
                return null;
            }

            @Override
            public Void visit(EnumerationFieldMetadata enumField) {
                if (StorageMetadataUtils.isValueAssignable(fullText.getValue(), enumField)) {
                    fieldsMap.put(enumField.getName(), enumField.isKey());
                }
                return null;
            }
        });
    }

    String[] fieldsAsArray = fieldsMap.keySet().toArray(new String[fieldsMap.size()]);
    StringBuilder queryBuffer = new StringBuilder();
    Iterator<Map.Entry<String, Boolean>> fieldsIterator = fieldsMap.entrySet().iterator();
    String fullTextValue = getFullTextValue(fullText);
    BooleanQuery query = new BooleanQuery();
    Query idQuery = null;
    while (fieldsIterator.hasNext()) {
        Map.Entry<String, Boolean> next = fieldsIterator.next();
        if (next.getValue()) {
            queryBuffer.append(next.getKey()).append(ToLowerCaseFieldBridge.ID_POSTFIX + ':')
                    .append(fullTextValue);
            idQuery = new PrefixQuery(new Term(next.getKey(), fullText.getValue()));
        } else {
            queryBuffer.append(next.getKey()).append(':').append(fullTextValue);
        }
        if (fieldsIterator.hasNext()) {
            queryBuffer.append(" OR "); //$NON-NLS-1$
        }
    }

    String fullTextQuery = queryBuffer.toString();
    if (idQuery != null) {
        query.add(idQuery, BooleanClause.Occur.SHOULD);
    }
    query.add(parseQuery(fieldsAsArray, fullTextQuery, fullText.getValue()), BooleanClause.Occur.SHOULD);
    return query;
}

---

From source file:com.amalto.core.storage.hibernate.LuceneQueryGenerator.java

License:Open Source License

@Override
public Query visit(FieldFullText fieldFullText) {
    String fieldName = fieldFullText.getField().getFieldMetadata().getName();
    String[] fieldsAsArray = new String[] { fieldName };
    String fullTextValue = getFullTextValue(fieldFullText);
    String fullTextQuery = fieldName + ':' + fullTextValue;
    if (fieldFullText.getField().getFieldMetadata().isKey()) {
        BooleanQuery query = new BooleanQuery();
        query.add(new PrefixQuery(new Term(fieldName, fieldFullText.getValue())), BooleanClause.Occur.SHOULD);
        fieldsAsArray = new String[] { fieldName + ToLowerCaseFieldBridge.ID_POSTFIX };
        fullTextQuery = fieldName + ToLowerCaseFieldBridge.ID_POSTFIX + ":" + fullTextValue; //$NON-NLS-1$
        query.add(parseQuery(fieldsAsArray, fullTextQuery, fieldFullText.getValue()),
                BooleanClause.Occur.SHOULD);
        return query;
    }//w  ww. j a va 2 s .com
    return parseQuery(fieldsAsArray, fullTextQuery, fieldFullText.getValue());
}

---

From source file:com.barchart.feed.ddf.resolver.provider.CodecHelper.java

License:BSD License

static Query buildQuerySimple(final String source) {

    final String[] termArray = source.split("\\s+");

    final BooleanQuery query = new BooleanQuery();

    for (final String termText : termArray) {

        final Term term = getBodyTerm(termText);

        if (hasWildcard(termText)) {
            AND(query, new WildcardQuery(term));
        } else {/*from www  .  ja v  a  2  s  .  com*/
            AND(query, new PrefixQuery(term));
        }

    }

    return query;

}

---

From source file:com.bewsia.script.safe.lucene.SEntity.java

License:Open Source License

public PrefixQuery newPrefixQuery(Term term) {
    return new PrefixQuery(term);
}

---

From source file:com.bluedragon.search.search.QueryAttributes.java

License:Open Source License

public boolean setCategoryTree(String categoryTree) {
    if (categoryTree == null || categoryTree.length() == 0)
        return false;

    Query catTreeQuery = new PrefixQuery(new Term(DocumentWrap.CATEGORYTREE, categoryTree));
    this.query = combineQueries(this.query, catTreeQuery);
    return true;/*from w w w . j a v  a 2 s  .  c  om*/
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• »