Bug 324546 external .js file has no effect in beforeOpen if the data set is used to generate a dynamic parameter selection
Build Identifier: I define a function "replace_query" in an external .js file, and then include it in the report. I then use the function in the beforeOpen script. If the data set is not used to generate a dynamic parameter selection, then it works fine. Otherwise, when viewing the report, it will give this error: Error evaluating Javascript expression. Script engine error: ReferenceError: "replace_query" is not defined. Reproducible: Always Steps to Reproduce: 1. Define a function in an external .js file 2. Include the .js file in the report 3. Call the function in the beforeOpen script of a data set that is also used to generate a dynamic parameter selection
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/GetParameterDefinitionTask.java
ParameterHelper[] parameterHelpers = new ParameterHelper[parameterCount];
		for ( int i = 0; i < parameterCount; i++ )
		{
			AbstractScalarParameterHandle parameter = (AbstractScalarParameterHandle) parameters
					.get( i );
			parameterHelpers[i] = new ParameterHelper( parameter, ulocale,
					timeZone );
		}
		return parameterHelpers;
	}
	
	private Collection getChoicesFromParameterGroup(
			AbstractScalarParameterHandle parameter, Object[] groupKeyValues )
	{
		assert isCascadingParameter( parameter );
		CascadingParameterGroupHandle parameterGroup = getCascadingGroup( parameter );
		IResultIterator iterator = getResultSetOfCascadingGroup( parameterGroup );
		if ( iterator == null )
		{
			return Collections.EMPTY_LIST;
		}
		return populateToList( iterator, parameter, new ParameterGroupFilter(
				groupKeyValues, parameterGroup ) );
	}
	private interface SelectionFilter
	{
		boolean accept( IResultIterator iterator ) throws BirtException;
	}
	
	private class ParameterGroupFilter implements SelectionFilter