Bug 142430 Available data set should be invisible for dynamic image
Steps to reproduce: 1.New a sample data source and data set with table "PRODUCTLINES" 2.Add a dynamic image, binding with data set 3.Click "Expression Builder" Expected result: Available data set is not listed in Category to avoid user choose it Actual result: Available data set is listed in Category but we didn't support such expression like dataSetRow["image"]
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ImageBuilder.java
* (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.dialogs.Dialog#okPressed()
	 */
	protected void okPressed( )
	{
		try
		{
			switch ( selectedType )
			{
				case FILE_TYPE :
					inputImage.setFile( uriEditor.getText( ).trim( ) );
					break;
				case URI_TYPE :
					inputImage.setURI( uriEditor.getText( ).trim( ) );
					break;
				case EMBEDDED_TYPE :
					inputImage.setImageName( embeddedImageList.getSelection( )[0] );
					break;
				case BLOB_TYPE :
					inputImage.setValueExpression( uriEditor.getText( ).trim( ) );
			}
			setResult( inputImage );
		}
		catch ( SemanticException e )
		{
			ExceptionHandler.handle( e );
		}
		super.okPressed( );
	}