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
if ( __validate( ) )
			{
				
				this.requesterTag = (RequesterTag) TagSupport
						.findAncestorWithClass( this, RequesterTag.class );
				if ( requesterTag != null )
				{
					this.viewer = requesterTag.viewer;
					if ( this.viewer.isCustom( ) )
					{
						__beforeEndTag( );
						__process( );
					}
				}
			}
		}
		catch ( Exception e )
		{
			__handleException( e );
		}
		return super.doEndTag( );
	}
	/**
	 * validate the tag
	 * 
	 * @return
	 * @throws Exception
	 */
	protected boolean __validate( ) throws Exception
	{