Examples of it.unimi.dsi.mg4j.index.IndexIterator.positions()

Class it.unimi.dsi.mg4j.index.IndexIterator

Examples of it.unimi.dsi.mg4j.index.IndexIterator.positions()

it.unimi.dsi.mg4j.index.IndexIterator.positions()
Returns the positions at which the term appears in the current document. @return the positions of the current document in which the current term appears. @throws UnsupportedOperationException if the index of this iterator does not contain positions.

          
          
          int[] firstPos = new int[1000];
          int[] secondPos = new int[1000];
          int fRet = firstIterator.positions(firstPos);
          int sRet = secondIterator.positions(secondPos);
          System.out.println(fRet + "  " + sRet);
          Assert.assertTrue(fRet == sRet);
          
          for(int j = 0;j<fRet;j++)
            Assert.assertEquals(firstPos[j],secondPos[j]);

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        while(firstIterator.hasNext()){
          firstIterator.next();
          secondIterator.next();
  
          IntIterator firstIntIt = firstIterator.positions();
          IntIterator secondIntIt = secondIterator.positions();        
          while(firstIntIt.hasNext()){                  
            Assert.assertEquals(firstIntIt.nextInt(),secondIntIt.nextInt());
          }        
          Assert.assertEquals(firstIntIt.skip(2),secondIntIt.skip(2));        
          if(firstIntIt.hasNext()){

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                      int c = indexIterator.count();
                      if ( termsInDoc[ i ].get( t ) !=  c ) 
                        LOGGER.error( index[ i ] + ": The count for term " + t + " in document " + currDoc + " is " + c + " instead of " + termsInDoc[ i ].get( t ) );
                      else {
                        if ( index[ i ].hasPositions ) {
                          indexIterator.positions( occ[ i ] );


                          for( int j = 0; j < c; j++ ) 
                            if ( wordInPos[ i ][ occ[ i ][ j ] ] != t )  
                              LOGGER.error( index[ i ] + ": The occurrence of index " + i + " of term " + t + " (position " + occ[ i ] +") in document " + currDoc + " is occupied instead by term " + wordInPos[ i ][ occ[ i ][ j ] ] );
                        }

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                      int c = indexIterator.count();
                      if ( termsInDoc[ i ].get( t ) !=  c ) 
                        LOGGER.error( index[ i ] + ": The count for term " + t + " in document " + currDoc + " is " + c + " instead of " + termsInDoc[ i ].get( t ) );
                      else {
                        if ( index[ i ].hasPositions ) {
                          indexIterator.positions( occ[ i ] );


                          for( int j = 0; j < c; j++ ) 
                            if ( wordInPos[ i ][ occ[ i ][ j ] ] != t )  
                              LOGGER.error( index[ i ] + ": The occurrence of index " + i + " of term " + t + " (position " + occ[ i ] +") in document " + currDoc + " is occupied instead by term " + wordInPos[ i ][ occ[ i ][ j ] ] );
                        }

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                if ( word.length() == 0 || index[ i ].termProcessor != null && ! index[ i ].termProcessor.processTerm( word ) ) continue;
                IndexIterator indexIterator = indexReader[ i ].documents( word );
                if ( currDoc != indexIterator.skipTo( currDoc ) )
                  LOGGER.error( index[ i ] + ": Document " + currDoc + " does not appear in the inverted list of term " + word );
                else if ( index[ i ].hasPositions ) {
                  indexIterator.positions( occ[ i ] );
                  if ( IntArrayList.wrap( occ[ i ], indexIterator.count() ).indexOf( pos ) == -1 )
                    LOGGER.error( index[ i ] + ": Position " + pos + " does not appear in the position list of term " + word + " in document " + currDoc );
                }
                pos++;
              }

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    new IndexBuilder( basename, new StringArrayDocumentCollection( "a a" ) ).keepBatches( true ).run();
    IndexIterator indexIterator = Index.getInstance( basename + "-text@0" ).documents( 0 );
    indexIterator.next();
    assertEquals( 2, indexIterator.count() );
    int[] position = new int[ 2 ];
    indexIterator.positions( position );
    assertEquals( 0, position[ 0 ] );
    assertEquals( 1, position[ 1 ] );
  }

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