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/document/RowSaveUtil.java
IOUtil.writeRawBytes( this.rowExprsDos, bytes );
			tempBaos = null;
			tempBos = null;
			tempDos = null;
			
			return rowBytes;
		}
		catch ( IOException e )
		{
			throw new DataException( ResourceConstants.RD_SAVE_ERROR,
					e,
					"Result Data" );
		}
	}
	/**
	 * @return
	 */
	Set getExprNameSet( )
	{
		return this.exprNameSet;
	}
	
	/**
	 * @param currIndex
	 * @throws DataException
	 */
	void saveFinish( int currIndex ) throws DataException
	{
		initSave( true );
		try