Bug 201236 Issue about Allow multiple and duplicate values in Layout preview[0705]
Description: Issue about Allow multiple and duplicate values in Layout preview Build number:2.2.1.v20070827 Steps to reproduce: 1. New sample data source and dataset from CUSTOMERS. 2. New a parameter p1, listbox, dynamic, value field COUNTRY, tick on allow duplicate value, tick on allow multiple values. 3. Insert a data item to Layout, set expression as var values=""; for (i=0;i<params["p1"].value.length;i++) values=values+params["p1"].value[i]+"."; values; 4. In Layout, click Preview and select France. Expected result: Display one France. Actual result: Display several France. I tried the same action but preview in Web viewer and extenal html, the result is only one France. Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/taglib/ParamDefTag.java
for ( int i = 0; i < values.length; i++ )
				{
					String value = DataUtil.getDisplayValue( values[i] );
					this.valueStringList.add( value );
				}
			}
		}
		else
		{
			this.valueString = DataUtil.getDisplayValue( param.getValue( ) );
			if ( this.valueString == null )
				this.valueString = ""; 
		}
		
		this.displayTextString = param.getDisplayText( );
		if ( this.displayTextString == null )
		{
			Object obj = param.getValue( );
			if ( obj != null )
			{
				if ( obj instanceof Object[] )
				{
					Object[] objs = (Object[]) obj;
					if ( objs.length > 0 )
						obj = objs[0];
					else
						obj = null;
				}
				this.displayTextString = ParameterValidationUtil
						.getDisplayValue( dataType, this.pattern, obj, locale );