Bug 141950 Selection of select value in data set filter is error
Details: Selection of select value in data set filter is error Step: 1.New a report design. 2.Create a sample datasource and dataset. 3.Switch to filter. 4.Select a value in expression. 5.Drop the list of the value1 and select <select value...> Actual result: No value is appear and pop up an error. It said that "An expression has not been set"
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/data/ui/util/DataSetProvider.java
{
		 
		 
		
		
		
		
		String classPath = System.getProperty( "workspace.projectclasspath" );
		if ( classPath == null || classPath.length( ) == 0  )
			return parent;
		
		String[] classPathArray = classPath.split( ";", -1 );
		int count = classPathArray.length; 
		URL[] urls = new URL[count];
		for ( int i = 0; i < count; i++ )
		{
			File file = new File( classPathArray[i] );
			try
			{
				urls[i] = file.toURL( );
			} catch ( MalformedURLException e )
			{
				urls[i] = null;
			}
		}
		return new URLClassLoader( urls, parent);
	}
	
}