Bug 192829 Aggregation binding filter doesn't work for crosstab
The filter condition on bindings for Crosstab doesn't take effect. Currently Dte hasn't supported this yet.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/olap/data/impl/facttable/FactTableAccessor.java
maxRange = 0;
			for ( int j = 0; j < ranges.length; j++ )
			{
				if ( ranges[j].end - ranges[j].start > maxRange )
				{
					maxRange = ranges[j].end - ranges[j].start + 1;
				}
			}
			dimensionBitLength[i] = getBitLength( maxRange );
			totalBitLength += dimensionBitLength[i];
		}
	}
	/**
	 * 
	 * @param maxInt
	 * @return
	 */
	private int getBitLength( int maxInt )
	{
		int bitLength = 1;
		int powerValue = 2;
		while ( powerValue < maxInt )
		{
			bitLength++;
			powerValue *= 2;
		}
		return bitLength;
	}
	/**
	 *