Bug 122869 Drag a parameter from data explorer view into a table in library, a new parameter is created automatically.
Description:Drag a parameter from data explorer view into a table in library, a new parameter is created automatically. Steps to reproduce: 1. Add a cascading parameter and a table in a library file. 2. Drag a parameter from data explorer view into a table cell in layout editor. 3. Find that a new parameter was added in data explorer view automatically.
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
.getMethodInfo( );
			if ( method.getName( ).equals( methodName ) )
			{
				Iterator argumentListIterator = method.argumentListIterator( );
				if ( argumentListIterator.hasNext( ) )
				{
					IArgumentInfoList argumentInfoList = (IArgumentInfoList) argumentListIterator
							.next( );
					int i = 0;
					for ( Iterator iterator = argumentInfoList
							.argumentsIterator( ); iterator.hasNext( ); i++ )
					{
						Object arg = iterator.next( );
						if ( argIndex == i )
						{
							return ( (IArgumentInfo) arg ).getType( );
						}
					}
				}
				return null;
			}
		}
		return null;
	}
	public static List getDataSources( )
	{
		return SessionHandleAdapter.getInstance( ).getReportDesignHandle( )
				.getVisibleDataSources( );
	}
}