Bug 191627 [Regression]Exception occurs when first preview the joint dataset[0706]
Description: [Regression]Exception occurs when preview the flatfile and sampledb joint dataset[0706] Build number: 2.2.0.v20070608-0630 Steps to reproduce: 1, New a flatfile dataset 2, New a CUSTOMER dataset 3, Join two datasets with STATE column 4, Preview in dataset Expected result: Preview successfully Actual result: Exception occurs Error log: A BIRT exception occurred. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Data Engine Plug-in ID:org.eclipse.birt.data Version:2.2.0.v20070607-1421 Error Code:data.engine.ColumnBindingReferToInexistColumn Error Message:Column binding "Employee::CUSTOMERNUMBER" has referred to a data set column "Employee::CUSTOMERNUMBER" which is not exist.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/PreparedJointDataSourceQuery.java
* @param isLeftDataSet
	 * @param queryDefinition
	 * @throws DataException 
	 */
	private void setParameterBindings( DataEngineImpl dataEngine, String dataSetDesignName, boolean isLeftDataSet, QueryDefinition queryDefinition ) throws DataException
	{
		IBaseDataSetDesign dataSetDesign = dataEngine.getDataSetDesign( dataSetDesignName );
		if( dataSetDesign == null )
		{
			throw new DataException( ResourceConstants.UNDEFINED_DATA_SET, dataSetDesignName );
		}
		Iterator it = dataSetDesign.getParameters( ).iterator( );
		if ( it.hasNext( ) )
		{
			Iterator bindingIt = parameterBindings.iterator( );
			while ( bindingIt.hasNext( ) )
			{
				InputParameterBinding iipb = (InputParameterBinding) bindingIt.next( );
				if(JointDataSetParameterUtil.isDatasetParameter( dataSetDesignName, isLeftDataSet, iipb.getName( ) ))
				{
					queryDefinition.addInputParamBinding( new InputParameterBinding( 
							JointDataSetParameterUtil.extractParameterName( iipb.getName( )  ),
							iipb.getExpr( ) ) );
				}
			}
		}
	}
	/**
	 * 
	 * @param condition