taskresultrenderer.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.web.results.tasks;

import com.esri.adf.web.data.TocModel;
import com.esri.adf.web.data.WebToc;
import com.esri.adf.web.data.results.WebResultsToc;
import com.esri.adf.web.data.results.WebResults;
import com.esri.adf.web.data.results.ResultNode;
import com.esri.adf.web.templates.MapViewerResults;

import com.esri.adf.web.faces.component.TocControl;

import org.apache.log4j.Logger;

import java.util.List;
import java.util.Iterator;
import org.w3c.dom.Element;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import com.esri.adf.web.faces.renderkit.xml.ajax.AJAXRenderer;
import com.esri.adf.web.util.XMLUtil;

class Token{
  private String taskName = null;
  private String detail = null;
	
  public String getTaskName(){
	return this.taskName;
  }
	
  public void setTaskName(String taskName){
	this.taskName = taskName;
  }
	
  public String getDetail(){
	return this.detail;
  }
	
  public void setDetail(String detail){
	this.detail = detail;
  }
}


/**
 * AJAXRenderer to render current extent & scale of map
 */
public class TaskResultRenderer implements AJAXRenderer {
  private static Logger logger = Logger.getLogger(TaskResultRenderer.class.getName());
  
  @SuppressWarnings("unchecked")
  public Class getControlClass() {
    //returns MapControl
    return TocControl.class;
  }
  
  public Object getOriginalState(UIComponent component) {
    TocControl tocControl = (TocControl) component;
    return tocControl.getTocModel();
  }
  
  private static Token getToken(String disp){
	try{
		Token token = new Token();
		String vstart = "\\(";
		String vend = ")";
		String[] vs = disp.split(vstart);
		token.setDetail(vs[1].substring(0, vs[1].indexOf(vend)));
		token.setTaskName(vs[2].substring(0, vs[2].indexOf(vend)));
		return token;
	}catch(Exception e){
		//NOTE: This method does not only get called by the information
		//      controls.
		//logger.log(Level.SEVERE, "Not a jitk task element", e);
	}
	return null;
  }
    
  public void renderAjaxResponse(FacesContext facesContext, UIComponent component, Object state, boolean isEventSource, Element parentElement) {
	TocControl tocControl = (TocControl) component;
	TocModel tocModel = tocControl.getTocModel();
    
	if (tocModel instanceof WebToc) return;

	try {
        //render table result tag
    	if (tocModel instanceof WebResultsToc || tocModel instanceof MapViewerResults){
    	    Element rootElement = XMLUtil.createElement("jitk-task-result", null, parentElement);
    		
    		WebResults webResults = null;
    		if (tocModel instanceof WebResultsToc){
    			webResults = ((WebResultsToc)tocModel).getResults();
    		}
    		if (tocModel instanceof MapViewerResults){
    			webResults = ((MapViewerResults)tocModel).getResults();
    		}
    		if (tocModel == null) return;
    		List<ResultNode> resultsList = webResults.getResultNodes();
    		Iterator<ResultNode> it = resultsList.iterator();
    		while (it.hasNext()){
    			ResultNode resultNode = (ResultNode)it.next();
    			Token token = getToken(resultNode.getDisplayName());
    			if (token != null){
    				XMLUtil.createElement("taskName", token.getTaskName(), rootElement);
    				XMLUtil.createElement("detail", token.getDetail(), rootElement);
    				webResults.removeResultNode(resultNode);
    			}
    		}    		
    	}
      }
      catch (Exception e) {
          logger.warn("Unable to encode xml.", e);
      }
  }
}