resourcefinder.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.web.tasks.query.querybuilder;

import java.util.Iterator;
import java.util.LinkedHashMap;

import com.esri.adf.web.ags.data.AGSMapResource;
import com.esri.adf.web.aims.data.AIMSMapResource;
import com.esri.adf.web.data.GISResource;
import com.esri.adf.web.data.WebContext;
import com.esri.solutions.jitk.web.wfs.data.WFSMapResource;

public class ResourceFinder {
	public ResourceFinder() {
	}

	/**
	 * Get the map resource associated with the currently selected layer
	 */
	@SuppressWarnings("unused")
	public AGSMapResource getAGSMapResource(WebContext webContext, LinkedHashMap<String, GISResource> resources, String layerName) {
		Object resource;
		for(Iterator<String> it = resources.keySet().iterator(); it.hasNext();) {
			String id = (String)it.next();
        	resource = resources.get(id);
        	
        	if (resource instanceof AGSMapResource){
        		AGSMapResource agsMapResource = (AGSMapResource)resource;	
				
        		LinkedHashMap<String, String> layerList = getAGSLayerList(agsMapResource, id, webContext);
				
				Iterator<String> iter = layerList.keySet().iterator();
				
				while (iter.hasNext()){
					String layer = (String)iter.next();
					if (layerName.equals(layer)){
						return agsMapResource;
					}
				}
			}
		}
		
		return null;
	}
	
	public WFSMapResource getWFSMapResource(WebContext webContext, LinkedHashMap<String, GISResource> resources, String layerName) 
	throws Exception {
		Object resource;
		
		for(Iterator<String> it = resources.keySet().iterator(); it.hasNext();) {
			String id = (String)it.next();
        	resource = resources.get(id);
        	
        	if (resource instanceof WFSMapResource) {
        		WFSMapResource wfsMapResource = (WFSMapResource)resource;	
				
        		LinkedHashMap<String, String> layerList = 
        			QueryBuilderTaskWfsUtil.getServiceLayerList(wfsMapResource, id, webContext.getWebQuery().getQueryLayers());
				
				Iterator<String> iter = layerList.keySet().iterator();
				
				while (iter.hasNext()) {
					String layer = (String)iter.next();
					
					if (layerName.equals(layer)){
						return wfsMapResource;
					}
				}
			}
		}
		
		return null;
	}	
	
	/**
	 * Get the map resource associated with the layername passed in.  This
	 * is used for loading queries because the layer id changes everytime
	 * a new query is loaded.  Have to search for the resource by name 
	 * rather than by layerid.
	 */
	@SuppressWarnings("unused")
	public AGSMapResource getAGSMapResourceByLayerName(WebContext webContext, LinkedHashMap<String, GISResource> resources, String layerName) {
		Object resource;
		for(Iterator<String> it = resources.keySet().iterator(); it.hasNext();) {
			String id = (String)it.next();
        	resource = resources.get(id);
        	
        	if (resource instanceof AGSMapResource){
				
        		AGSMapResource agsMapResource = (AGSMapResource)resource;	
				LinkedHashMap<String, String> layerList = getAGSLayerList(agsMapResource, id, webContext);
				
				if (layerList.containsValue(layerName)){
					return agsMapResource;
				}
			}
		}
		
		return null;
	}
	
	/**
	 * Get the AIMS map resource associated with the currently selected layer
	 */
	@SuppressWarnings("unused")
	public AIMSMapResource getAIMSMapResource(WebContext webContext, LinkedHashMap<String, GISResource> resources, String layerName) {
		Object resource;
		for(Iterator<String> it = resources.keySet().iterator(); it.hasNext();) {
			String id = (String)it.next();
        	resource = resources.get(id);
        	
        	if (resource instanceof AIMSMapResource){
        		AIMSMapResource aimsMapResource = (AIMSMapResource)resource;
        		
        		LinkedHashMap<String, String>layerList = getAIMSLayerList(aimsMapResource, id);
				Iterator<String> iter = layerList.keySet().iterator();
				
				while (iter.hasNext()){
					String layer = (String)iter.next();
					if (layerName.equals(layer)){
						return aimsMapResource;
					}
				}
			}
		}
		
		return null;
	}
	
	/**
	 * Get the map resource associated with the layername passed in.  This
	 * is used for loading queries because the layer id changes every time
	 * a new query is loaded.  Have to search for the layer by name 
	 * rather than by id.
	 */
	@SuppressWarnings("unused")
	public AIMSMapResource getAIMSMapResourceByLayerName(WebContext webContext, LinkedHashMap<String, GISResource> resources, String layerName) {
		Object resource;
		for(Iterator<String> it = resources.keySet().iterator(); it.hasNext();) {
			String id = (String)it.next();
        	resource = resources.get(id);
        	
        	if (resource instanceof AIMSMapResource){
				AIMSMapResource aimsMapResource = (AIMSMapResource)resource;
	
				LinkedHashMap<String, String> layerList = getAIMSLayerList(aimsMapResource, id);
				Iterator<String> iter = layerList.keySet().iterator();
				
				if (layerList.containsValue(layerName)){
					return aimsMapResource;
				}
			}
		}
		
		return null;
	}
	
	private LinkedHashMap<String, String> getAIMSLayerList( AIMSMapResource resource, String id){	
		return QueryBuilderTaskAimsUtil.getServiceLayerList(resource, id);
	}
	
	private LinkedHashMap<String, String> getAGSLayerList( AGSMapResource resource, String id, WebContext context){		
		return QueryBuilderTaskAgsUtil.getServiceLayerList(resource, id, context.getWebQuery().getQueryLayers());
	}
}