List of nextInterval() Examples

Examples of nextInterval()

it.unimi.dsi.mg4j.search.IntervalIterator.nextInterval()
Returns the next interval provided by this interval iterator, or null if no more intervals are available.
This method has been reintroduced in MG4J 1.2 with a different semantics. The special return value null is used to mark the end of iteration. The reason for this change is providing fully lazy iteration over intervals. Fully lazy iteration does not provide an hasNext() method—you have to actually ask for the next element and check the return value. Fully lazy iteration is much lighter on method calls (half) and in most (if not all) MG4J classes leads to a much simpler logic. Moreover, {@link #nextInterval()}can be specified as throwing an {@link IOException}, which avoids the pernicious proliferation of try/catch blocks in very short, low-level methods (it was having a detectable impact on performance). @return the next interval, or null if no more intervals are available.

Examples of it.unimi.dsi.mg4j.search.IntervalIterator.nextInterval()

          /** Compare position IntIterator*/
          IntervalIterator firstIntervalIt = firstIterator.intervalIterator(firstIndex);
          IntervalIterator secondIntervalIt = secondIterator.intervalIterator(secondIndex);
          while(firstIntervalIt.hasNext()){              
            Interval firstIntv = firstIntervalIt.nextInterval();
            Interval secondIntv = secondIntervalIt.nextInterval();
            
            System.out.println("left:" +  firstIntv.left + "   " + "right:" + firstIntv.right);
            Assert.assertEquals(firstIntv.left,secondIntv.left);
            Assert.assertEquals(firstIntv.right,secondIntv.right);
          }

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Examples of it.unimi.dsi.mg4j.search.IntervalIterator.nextInterval()

    final IntervalIterator it = documentIterator.intervalIterator( index );
    if ( it == IntervalIterators.TRUE || it == IntervalIterators.FALSE ) return 0;
    double score = 0, residual = 1, t;
    int extent = it.extent(), length;
    Interval interval;
    while ( ( interval = it.nextInterval() ) != null ) {
      length = interval.length();
      t = residual * Math.min( (double)extent / length, 1 ) / 2;
      residual -= t;
      score += t;
      if ( score > .99 ) return 1;

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Examples of it.unimi.dsi.mg4j.search.IntervalIterator.nextInterval()

    final IntervalIterator it = documentIterator.intervalIterator( index );
    if ( it == IntervalIterators.TRUE || it == IntervalIterators.FALSE ) return 0;
    double result = 0;
    int lt, count = 0;
    Interval interval;
    while ( ( interval = it.nextInterval() ) != null ) {
      count++;
      lt = interval.length();
      if ( lt < h ) result += 1;
      else result += Math.pow( h / (double) lt, alpha );
    }

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Examples of it.unimi.dsi.mg4j.search.IntervalIterator.nextInterval()

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

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Examples of it.unimi.dsi.mg4j.search.IntervalIterator.nextInterval()

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

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Examples of it.unimi.dsi.mg4j.search.IntervalIterator.nextInterval()

    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() );
    assertFalse( intervalIterator.hasNext() );
    documentIterator.dispose();
  } 
  
  public void testTrue() throws IOException {

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