Package it.unimi.dsi.mg4j.query.nodes

Examples of it.unimi.dsi.mg4j.query.nodes.Query.accept()

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  }

  public void testQuery() throws IOException, QueryBuilderVisitorException {
    Query query = new Consecutive( new Term( "a" ), new Remap( new Select( "index1", new Term( "b" ) ), new CharSequence[] { "index1" }, new CharSequence[] { "index0" } ) );
    DocumentIteratorBuilderVisitor documentIteratorBuilderVisitor = new DocumentIteratorBuilderVisitor( indexMap, index0, Integer.MAX_VALUE );
    DocumentIterator documentIterator = query.accept( documentIteratorBuilderVisitor );
    assertTrue( documentIterator.hasNext() );
    assertEquals( 0, documentIterator.nextDocument() );
    IntervalIterator intervalIterator = documentIterator.intervalIterator( index0 );
    assertEquals( it.unimi.dsi.util.Interval.valueOf( 0, 1 ), intervalIterator.nextInterval() );
    assertFalse( intervalIterator.hasNext() );
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  public void testDoubleRemapping() throws IOException, QueryBuilderVisitorException {
    Query query = new Remap( new Or( new Term( "a" ), new Select( "index1", new Term( "b" ) ) ), new CharSequence[] { "index0", "index1" }, new CharSequence[] { "index2", "index3" } );
    DocumentIteratorBuilderVisitor documentIteratorBuilderVisitor = new DocumentIteratorBuilderVisitor( indexMap, index0, Integer.MAX_VALUE );
    DocumentIterator documentIterator = query.accept( documentIteratorBuilderVisitor );
    IntervalIterator intervalIterator;
   
    assertTrue( documentIterator.hasNext() );

    assertEquals( 0, documentIterator.nextDocument() );
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    index = DiskBasedIndex.getInstance( basename + "-text", true, true );
    simpleParser = new SimpleParser( index.termProcessor );

    Query query = simpleParser.parse( "(a|b|d)<(a|b|d)" );
    DocumentIteratorBuilderVisitor documentIteratorBuilderVisitor = new DocumentIteratorBuilderVisitor( null, index, Integer.MAX_VALUE );
    DocumentIterator documentIterator = query.accept( documentIteratorBuilderVisitor );
    documentIterator.nextDocument();
    IntervalIterator intervalIterator = documentIterator.intervalIterator();
    assertEquals( Interval.valueOf( 0, 1 ), intervalIterator.nextInterval() );
    assertEquals( Interval.valueOf( 1, 2 ), intervalIterator.nextInterval() );
    assertEquals( Interval.valueOf( 2, 4 ), intervalIterator.nextInterval() );
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  public void testSkipBug() throws QueryParserException, QueryBuilderVisitorException, IOException {
    Query query = simpleParser.parse( "a + b + c" );
    DocumentIteratorBuilderVisitor documentIteratorBuilderVisitor = new DocumentIteratorBuilderVisitor( null, index, Integer.MAX_VALUE );
    DocumentIterator documentIterator = query.accept( documentIteratorBuilderVisitor );
    assertEquals( 2, documentIterator.skipTo( 2 ) );
    documentIterator.dispose();
  }
 
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  public void testSkipBug() throws QueryParserException, QueryBuilderVisitorException, IOException {
    Query query = simpleParser.parse( "a | b | c" );
    DocumentIteratorBuilderVisitor documentIteratorBuilderVisitor = new DocumentIteratorBuilderVisitor( null, index, Integer.MAX_VALUE );
    DocumentIterator documentIterator = query.accept( documentIteratorBuilderVisitor );
    assertEquals( 2, documentIterator.skipTo( 2 ) );
    documentIterator.dispose();
  }
 
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  }

  public void testWeights() throws QueryBuilderVisitorException, IOException {
    Query query = new Weight( 0.5, new And( new Term( "a" ), new Term( "b" ) ) );
    DocumentIteratorBuilderVisitor documentIteratorBuilderVisitor = new DocumentIteratorBuilderVisitor( null, index, Integer.MAX_VALUE );
    DocumentIterator documentIterator = query.accept( documentIteratorBuilderVisitor );
    assertEquals( .5, documentIterator.weight(), 0 );
    documentIterator.dispose();

    query = new Weight( .1, new Weight( 0.5, new And( new Weight( .2, new Term( "a" ) ), new Term( "b" ) ) ) );
    documentIteratorBuilderVisitor = new DocumentIteratorBuilderVisitor( null, index, Integer.MAX_VALUE );
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    assertEquals( .5, documentIterator.weight(), 0 );
    documentIterator.dispose();

    query = new Weight( .1, new Weight( 0.5, new And( new Weight( .2, new Term( "a" ) ), new Term( "b" ) ) ) );
    documentIteratorBuilderVisitor = new DocumentIteratorBuilderVisitor( null, index, Integer.MAX_VALUE );
    documentIterator = query.accept( documentIteratorBuilderVisitor );
    assertEquals( .5, documentIterator.weight(), 0 );
    documentIterator.dispose();
}
}
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