Examples of it.unimi.dsi.mg4j.search.DocumentIterator.intervalIterator()

Class it.unimi.dsi.mg4j.search.DocumentIterator

Examples of it.unimi.dsi.mg4j.search.DocumentIterator.intervalIterator()

it.unimi.dsi.mg4j.search.DocumentIterator.intervalIterator()
Returns the interval iterator of this document iterator for single-index queries.
This is a commodity method that can be used only for queries built over a single index. @return an interval iterator. @see #intervalIterator(Index) @throws IllegalStateException if this document iterator is not built on a single index.


    DocumentIterator subtrahendIterator = new IntArrayDocumentIterator( new int[] { 1 }, new int[][][] { {} } );
    DocumentIterator differenceIterator = DifferenceDocumentIterator.getInstance( minuendIterator, subtrahendIterator );
    assertTrue( differenceIterator.hasNext() );
    assertEquals( 0, differenceIterator.nextDocument() );
    assertEquals( Interval.valueOf( 0, 1 ), differenceIterator.intervalIterator().nextInterval() );
  }


  public void testEnlargment() throws IOException {
    DocumentIterator minuendIterator = new IntArrayDocumentIterator( new int[] { 0, 1, 2, 3 }, 
        new int[][][] {

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        { { 0 }, { 1 }, { 4 } },
        } );
    DocumentIterator differenceIterator = DifferenceDocumentIterator.getInstance( minuendIterator, subtrahendIterator, 1, 1 );
    assertTrue( differenceIterator.hasNext() );
    assertEquals( 1, differenceIterator.nextDocument() );
    assertEquals( Interval.valueOf( 0, 1 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 1, 2 ), differenceIterator.intervalIterator().nextInterval() );
    assertFalse( differenceIterator.intervalIterator().hasNext() );
    assertEquals( 2, differenceIterator.nextDocument() );
    assertEquals( IntervalIterators.TRUE, differenceIterator.intervalIterator() );
    assertEquals( 3, differenceIterator.nextDocument() );

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        } );
    DocumentIterator differenceIterator = DifferenceDocumentIterator.getInstance( minuendIterator, subtrahendIterator, 1, 1 );
    assertTrue( differenceIterator.hasNext() );
    assertEquals( 1, differenceIterator.nextDocument() );
    assertEquals( Interval.valueOf( 0, 1 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 1, 2 ), differenceIterator.intervalIterator().nextInterval() );
    assertFalse( differenceIterator.intervalIterator().hasNext() );
    assertEquals( 2, differenceIterator.nextDocument() );
    assertEquals( IntervalIterators.TRUE, differenceIterator.intervalIterator() );
    assertEquals( 3, differenceIterator.nextDocument() );
    assertEquals( Interval.valueOf( 0, 1 ), differenceIterator.intervalIterator().nextInterval() );

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    DocumentIterator differenceIterator = DifferenceDocumentIterator.getInstance( minuendIterator, subtrahendIterator, 1, 1 );
    assertTrue( differenceIterator.hasNext() );
    assertEquals( 1, differenceIterator.nextDocument() );
    assertEquals( Interval.valueOf( 0, 1 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 1, 2 ), differenceIterator.intervalIterator().nextInterval() );
    assertFalse( differenceIterator.intervalIterator().hasNext() );
    assertEquals( 2, differenceIterator.nextDocument() );
    assertEquals( IntervalIterators.TRUE, differenceIterator.intervalIterator() );
    assertEquals( 3, differenceIterator.nextDocument() );
    assertEquals( Interval.valueOf( 0, 1 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 1, 2 ), differenceIterator.intervalIterator().nextInterval() );

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    assertEquals( 1, differenceIterator.nextDocument() );
    assertEquals( Interval.valueOf( 0, 1 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 1, 2 ), differenceIterator.intervalIterator().nextInterval() );
    assertFalse( differenceIterator.intervalIterator().hasNext() );
    assertEquals( 2, differenceIterator.nextDocument() );
    assertEquals( IntervalIterators.TRUE, differenceIterator.intervalIterator() );
    assertEquals( 3, differenceIterator.nextDocument() );
    assertEquals( Interval.valueOf( 0, 1 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 1, 2 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 4, 6 ), differenceIterator.intervalIterator().nextInterval() );
    assertFalse( differenceIterator.intervalIterator().hasNext() );

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    assertEquals( Interval.valueOf( 1, 2 ), differenceIterator.intervalIterator().nextInterval() );
    assertFalse( differenceIterator.intervalIterator().hasNext() );
    assertEquals( 2, differenceIterator.nextDocument() );
    assertEquals( IntervalIterators.TRUE, differenceIterator.intervalIterator() );
    assertEquals( 3, differenceIterator.nextDocument() );
    assertEquals( Interval.valueOf( 0, 1 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 1, 2 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 4, 6 ), differenceIterator.intervalIterator().nextInterval() );
    assertFalse( differenceIterator.intervalIterator().hasNext() );
    assertFalse( differenceIterator.hasNext() );
  }

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    assertFalse( differenceIterator.intervalIterator().hasNext() );
    assertEquals( 2, differenceIterator.nextDocument() );
    assertEquals( IntervalIterators.TRUE, differenceIterator.intervalIterator() );
    assertEquals( 3, differenceIterator.nextDocument() );
    assertEquals( Interval.valueOf( 0, 1 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 1, 2 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 4, 6 ), differenceIterator.intervalIterator().nextInterval() );
    assertFalse( differenceIterator.intervalIterator().hasNext() );
    assertFalse( differenceIterator.hasNext() );
  }
}

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    assertEquals( 2, differenceIterator.nextDocument() );
    assertEquals( IntervalIterators.TRUE, differenceIterator.intervalIterator() );
    assertEquals( 3, differenceIterator.nextDocument() );
    assertEquals( Interval.valueOf( 0, 1 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 1, 2 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 4, 6 ), differenceIterator.intervalIterator().nextInterval() );
    assertFalse( differenceIterator.intervalIterator().hasNext() );
    assertFalse( differenceIterator.hasNext() );
  }
}

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    assertEquals( IntervalIterators.TRUE, differenceIterator.intervalIterator() );
    assertEquals( 3, differenceIterator.nextDocument() );
    assertEquals( Interval.valueOf( 0, 1 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 1, 2 ), differenceIterator.intervalIterator().nextInterval() );
    assertEquals( Interval.valueOf( 4, 6 ), differenceIterator.intervalIterator().nextInterval() );
    assertFalse( differenceIterator.intervalIterator().hasNext() );
    assertFalse( differenceIterator.hasNext() );
  }
}

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