webfilter.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.web.data;

import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;

import com.esri.adf.web.ags.data.AGSMapResource;
import com.esri.adf.web.data.GISResource;
import com.esri.adf.web.data.WebLayerInfo;

import com.esri.solutions.jitk.web.ags.data.AGSFilterFunctionality;

public class WebFilter {
	private static final Logger _logger = LogManager.getLogger(WebFilter.class);
	
	public void filter(WebLayerInfo wlInfo, String definitionExpression) 
		throws FilterNotSupportedOnServiceTypeException{
		try {
		   _logger.debug("Applying filter " + definitionExpression);
		   GISResource resource = wlInfo.getResource();
		   
		   if (resource instanceof AGSMapResource) {
			   AGSFilterFunctionality agsFilterFunc =
				   (AGSFilterFunctionality)wlInfo.getResource().getFunctionality("AGSFilter");
				
			   agsFilterFunc.filter(wlInfo, definitionExpression);	
		   } else {
			   _logger.error("Unable to filter on selected resource, resource type not supported");
			   throw new FilterNotSupportedOnServiceTypeException("Unable to filter on selected resource, resource type not supported");
		   }
	   } catch(Exception ex){
		   _logger.error("Filter exception:", ex);
	   }
	}
}