Examples of it.unimi.dsi.mg4j.query.nodes.Remap

it.unimi.dsi.mg4j.query.nodes.Remap
A node representing an index remapping.
A remapping takes results of the underlying {@link Query} for an internal index (which must be one of the indices for which the query provides results) and exhibits them as results of an external index. The map provided at construction time under the form of two parallel arrays should remap internal indices to external indices. @author Sebastiano Vigna @see RemappingDocumentIterator

    assertFalse( intervalIterator.hasNext() );
    assertFalse( documentIterator.hasNext() );
  }


  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 );

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    assertFalse( documentIterator.hasNext() );
  }


  
  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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Related Classes of it.unimi.dsi.mg4j.query.nodes.Remap

it.unimi.dsi.mg4j.search.RemappingDocumentIteratorTest

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