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

it.unimi.dsi.mg4j.search.DocumentIterator.skipTo()

Skips all documents smaller than n.

Define the current document k associated with this document iterator as follows:

-1, if {@link #nextDocument()} and this method have never been called;
{@link Integer#MAX_VALUE}, if a call to this method returned {@link Integer#MAX_VALUE};
the last value returned by a call to {@link #nextDocument()} or this method, otherwise.

If k is larger than or equal to n, then this method does nothing and returns k. Otherwise, a call to this method is equivalent to

 while( ( k = nextDocument() ) < n && k != -1 ); return k == -1 ? Integer.MAX_VALUE : k;

Thus, when a result k ≠ {@link Integer#MAX_VALUE}is returned, the state of this iterator will be exactly the same as after a call to {@link #nextDocument()} that returned k. In particular, the first document larger than or equal to n (when returned by this method) will not be returned by the next call to {@link #nextDocument()}. @param n a document pointer. @return a document pointer larger than or equal to n if available, {@link Integer#MAX_VALUE}otherwise.

    
    
    minuendIterator.reset();
    subtrahendIterator.reset();
    differenceIterator = DifferenceDocumentIterator.getInstance( minuendIterator, subtrahendIterator );
    assertEquals( Integer.MAX_VALUE, differenceIterator.skipTo( 10 ) );
    assertEquals( Integer.MAX_VALUE, differenceIterator.skipTo( 10 ) );
    assertEquals( -1, differenceIterator.nextDocument() );
  }


  public void testtrueFalseDifference() throws IOException {

    
    minuendIterator.reset();
    subtrahendIterator.reset();
    differenceIterator = DifferenceDocumentIterator.getInstance( minuendIterator, subtrahendIterator );
    assertEquals( Integer.MAX_VALUE, differenceIterator.skipTo( 10 ) );
    assertEquals( Integer.MAX_VALUE, differenceIterator.skipTo( 10 ) );
    assertEquals( -1, differenceIterator.nextDocument() );
  }


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

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.