Examples of org.apache.lucene.index.IndexReader.terms()

Class org.apache.lucene.index.IndexReader

Examples of org.apache.lucene.index.IndexReader.terms()

org.apache.lucene.index.IndexReader.terms()
Returns an enumeration of all the terms in the index. The enumeration is ordered by Term.compareTo(). Each term is greater than all that precede it in the enumeration. Note that after calling terms(), {@link TermEnum#next()} must be calledon the resulting enumeration before calling other methods such as {@link TermEnum#term()}. @throws IOException if there is a low-level IO error

                TermEnum terms = null;
                try
                {
                    indexReader = IndexReader.open( indexLocation );
    
                    terms = indexReader.terms( new Term( fieldName, "" ) );
                    while ( fieldName.equals( terms.term().field() ) )
                    {
                        keys.add( terms.term().text() );
    
                        if ( !terms.next() )

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        } finally {
            writer.close();
        }
        IndexReader reader = IndexReader.open(dir);
        try {
            TermEnum terms = reader.terms();
            if (terms.term() == null) {
                // position at first term
                terms.next();
            }
            return terms;

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                TermEnum terms = null;
                try
                {
                    indexReader = IndexReader.open( indexLocation );
    
                    terms = indexReader.terms( new Term( fieldName, "" ) );
                    while ( fieldName.equals( terms.term().field() ) )
                    {
                        keys.add( terms.term().text() );
    
                        if ( !terms.next() )

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                    Field.Store.NO, Field.Index.NOT_ANALYZED_NO_NORMS));
            writer.addDocument(doc);
        }
        writer.close();
        IndexReader reader = IndexReader.open(dir);
        TermEnum terms = reader.terms();
        if (terms.term() == null) {
            // position at first term
            terms.next();
        }
        return terms;

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   * @param field  - the name of the command or null for all of them.
   */
  public void terms(String field) throws IOException {
    TreeMap termMap = new TreeMap();
    IndexReader indexReader = IndexReader.open(indexName);
    TermEnum terms = indexReader.terms();
    while (terms.next()) {
      Term term = terms.term();
      //message(term.field() + ":" + term.text() + " freq:" + terms.docFreq());
      //if we're either not looking by field or we're matching the specific field
      if ((field == null) || field.equals(term.field()))

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        LinkedList termsWithPrefix = new LinkedList();
        IndexReader ir = IndexReader.open(indexStore);


        // this TermEnum gives "piccadilly", "pie" and "pizza".
        String prefix = "pi";
        TermEnum te = ir.terms(new Term("body", prefix));
        do {
            if (te.term().text().startsWith(prefix))
            {
                termsWithPrefix.add(te.term());
            }

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        // search for "blue* pizza":
        MultiPhraseQuery query3 = new MultiPhraseQuery();
        termsWithPrefix.clear();
        prefix = "blue";
        te = ir.terms(new Term("body", prefix));
        do {
            if (te.term().text().startsWith(prefix))
            {
                termsWithPrefix.add(te.term());
            }

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  {
      IndexReader reader = IndexReader.open(dir);
      TermEnum termEnum = null;


    // create enumeration of all terms
    termEnum = reader.terms();
    // go to the first term (aaa)
    termEnum.next();
    // assert that term is 'aaa'
    assertEquals("aaa", termEnum.term().text());
    assertEquals(200, termEnum.docFreq());

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    termEnum.close();




    // create enumeration of terms after term 'aaa', including 'aaa'
    termEnum = reader.terms(new Term("content", "aaa"));
    // assert that term is 'aaa'
    assertEquals("aaa", termEnum.term().text());
    assertEquals(200, termEnum.docFreq());
    // go to term 'bbb'
    termEnum.next();

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        LinkedList termsWithPrefix = new LinkedList();
        IndexReader ir = IndexReader.open(indexStore);


        // this TermEnum gives "piccadilly", "pie" and "pizza".
        String prefix = "pi";
        TermEnum te = ir.terms(new Term("body", prefix + "*"));
        do {
            if (te.term().text().startsWith(prefix))
            {
                termsWithPrefix.add(te.term());
            }

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