Bug 172092 [regression][automation] __maxrows=1 url pattern did not work
steps to reproduce: - preview report using the following url fragment, preview?__report=report/regression_142673.rptdesign&__designer=true&__maxrows=1 expected behavior: - only one data row is displayed actual behavior/: - all data rows are displayed
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/EngineTask.java
ParameterAttribute attribute = (ParameterAttribute) entry
					.getValue( );
			runValues.put( key, attribute.getValue( ) );
			executionContext.setParameter( (String) key, attribute.getValue( ),
					attribute.getDisplayText( ) );
		}
		if ( runnable == null )
		{
			return;
		}
		
		new ParameterVisitor( ) {
			boolean visitScalarParameter( ScalarParameterHandle param,
					Object userData )
			{
				String name = param.getName( );
				if ( !inputValues.containsKey( name ) )
				{
					Object value = convertToType( param.getDefaultValue( ),
							param.getDataType( ) );
					executionContext.setParameterValue( name, value );
					runValues.put( name, value );
				}
				return true;
			}
			boolean visitParameterGroup( ParameterGroupHandle group,
					Object value )
			{
				return visitParametersInGroup( group, value );
			}