wfsresultsbuilder.java

esri的ArcGIS Server超级学习模板程序（for java）

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

import java.util.ArrayList;
import java.util.List;

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

import com.esri.adf.web.data.WebLayerInfo;
import com.esri.adf.web.data.geometry.GeometryUtil;
import com.esri.adf.web.data.geometry.WebExtent;
import com.esri.adf.web.data.geometry.WebGeometry;
import com.esri.adf.web.data.query.QueryResult;
import com.esri.adf.web.data.query.WebQuery;
import com.esri.solutions.jitk.data.gml.GMLGeometryConverterFactory;
import com.esri.solutions.jitk.data.gml.IGMLGeometryConverter;
import com.esri.solutions.jitk.datasources.ogc.gml.IGMLGeometry;
import com.esri.solutions.jitk.datasources.ogc.wfs.FeatureCollection;
import com.esri.solutions.jitk.datasources.ogc.wfs.FeatureMember;

public class WFSResultsBuilder {
	private static final Logger _logger = LogManager.getLogger(WFSResultsBuilder.class);
	
	public WFSResultsBuilder() {
	}
	
	public List<QueryResult> buildQueryResults(WebQuery query, WebLayerInfo layerInfo, FeatureCollection fc) throws Exception {		 
		// Use full extent as result extent 
		WebExtent ext = query.getWebContext().getWebMap().getFullExtent();
		 
		return buildQueryResults(query, ext, layerInfo, fc);
	}
	
	public List<QueryResult> buildQueryResults(WebQuery query, WebExtent ext, WebLayerInfo layerInfo, FeatureCollection fc) throws Exception {
		 List<QueryResult> results = new ArrayList<QueryResult>();
		 Exception ex = null;
		 int recordNum = 1;
		 IGMLGeometry geometry = null;
		 
		 try {
			 for (FeatureMember fm : fc.getFeatureMembers()) {
				 geometry = fm.getShapeField();
				 IGMLGeometryConverter converter = GMLGeometryConverterFactory.getInstance(geometry);
				 WebGeometry webGeo = converter.toWebGeometry(geometry);
				 
				 QueryResult qr = new QueryResult(layerInfo, "Test", query, fm.getFeatureObjects(), ext, webGeo);
				 WebExtent resultExtent = GeometryUtil.computeWebExtent(webGeo);
				 qr.setExtent(resultExtent);
				 results.add(qr);
				 
				 recordNum++;
			 }
		 } catch (Exception ex2) {
			 _logger.error("Failed on coverting geometry index #" +recordNum);
			 geometry.print();
			 ex = ex2;
		 } finally {
			 if (ex != null) {
				 throw ex;
			 }
		 }
		 
		 return results;
	}	
}