Bug 188224 DTE should give out APIs about CrossTab filter equal value list and member value list Util.
DTE should give out APIs about CrossTab filter equal value list and member value list Util.
data/org.eclipse.birt.report.data.adapter/src/org/eclipse/birt/report/data/adapter/impl/DataSetIterator.java
* 
		 * @param index
		 * @return
		 */
		public String getFieldName( int index )
		{
			return ( (ColumnMeta) this.indexMap.get( new Integer( index ) ) ).getName( );
		}
		
		/**
		 * 
		 * @param index
		 * @return
		 */
		public Object getNullValueReplacer( int index )
		{
			return this.nullValueReplacer[index - 1];
		}
		
		public IDataProcessor getDataProcessor( int index )
		{
			 return ( (ColumnMeta) this.indexMap.get( new Integer( index ) ) ).getDataProcessor( );
		}
		
		/**
		 * 
		 * @param fieldType
		 * @return
		 */
		private Object createNullValueReplacer( int fieldType )