Bug 206279 Removed computed cols listed in expression builder[07]
Description: Removed computed column listed in expression builder inside DataSet Editor dialog Build number:2.2.2.v20071011 Steps to reproduce: 1. New data source and dataset. 2. Add a computed column in dataset and click OK. 3. Open the dataset, remove the computed column. 4. Add a new computed column and check columns in available Data Sets. Expected result: The removed computed column isn't there. Actual result: The removed computed column is still there for selection. Error log:n/a
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/data/ui/util/DataSetProvider.java
/**
	 * @param dataSetType
	 * @param dataSourceType
	 * @return
	 */
	public static IConfigurationElement findDataSetElement( String dataSetType,
			String dataSourceType )
	{
		
		IConfigurationElement dataSourceElem = findDataSourceElement( dataSourceType );
		if ( dataSourceElem != null )
		{
			
			IExtension ext = dataSourceElem.getDeclaringExtension( );
			IConfigurationElement[] elements = ext.getConfigurationElements( );
			for ( int n = 0; n < elements.length; n++ )
			{
				if ( elements[n].getAttribute( "id" ).equals( dataSetType ) ) 
				{
					return elements[n];
				}
			}
		}
		return null;
	}
	
	/**
	 * @param dataSourceType
	 * @return