Bug 187445 The joint result of script computed column is incorrect[07]
Description: 1, Each dataset including a computed column: name: index; type:integer; expression:0 2, Specify the script of datasets to: beforeOpen: index=0; onFetch: row["index"] = index; index++; 3, Join the two datasets Build number: 2.2.0.v20070516-0630 Steps to reproduce: 1, open the attached report design 2, open the joint dataset and preview Actual result: The result of column Data "Set1::index" is all 0 but no value 1.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/ComputedColumnHelper.java
value );
				}
				else
				{
					throw new DataException( ResourceConstants.EXPR_INVALID_COMPUTED_COLUMN,
							resultObject.getResultClass( )
									.getFieldName( columnIndexArray[i] ) );
				}
			}
		}
		finally
		{
			Context.exit( );
		}
		logger.exiting( ComputedColumnHelper.class.getName( ), "process" );
		return true;
	}
	/**
	 * Indicate the ComputedColumnHelper to reprepare.
	 * 
	 * @param rePrepare
	 */
	public void setRePrepare( boolean rePrepare )
	{
		this.isPrepared = !rePrepare;
	}
	/**
	 * Convert ccList to projComputedColumns, only prepare once.
	 */
	private void prepare( IResultClass resultClass ) throws DataException