Bug 195970 Two issues when evaluate a query inlcuding a subquery[07]
Description: Currently, when evaluating a query which includes a subquery, the query will be evaluated twice. The binding of query will pass to subquery twice. If user write a java script such as new Date() and i++. The result of query will be incorrect. Another issue: when write the report document, the binding of query will be written twice and the performance is not good to evalulate it twice.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/ResultIterator.java
}
			else if ( fieldValue != null && groupKeyValues[i] != null )
			{
				if ( fieldValue.getClass( )
						.equals( groupKeyValues[i].getClass( ) ) )
				{
					retValue = isTwoObjectEqual( fieldValue, groupKeyValues[i] );
				}
				else
				{
					Object convertedOb = DataTypeUtil.convert( groupKeyValues[i],
							fieldValue.getClass( ) );
					retValue = isTwoObjectEqual( fieldValue, convertedOb );
				}
			}
			return retValue;
		}
		/**
		 * @param value1
		 * @param value2
		 * @return
		 */
		private boolean isTwoObjectEqual( Object value1, Object value2 )
		{
			 
			if( value1 instanceof Date && value2 instanceof Date)
				return ((Date)value1).getTime() == ((Date)value2).getTime();
			else
			    return  value1.equals( value2 );
		}