webgeometryconverterfactory.java

esri的ArcGIS Server超级学习模板程序（for java）

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

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

import com.esri.adf.web.data.WebContext;
import com.esri.adf.web.data.geometry.WebExtent;
import com.esri.adf.web.data.geometry.WebGeometry;
import com.esri.adf.web.data.geometry.WebPoint;
import com.esri.adf.web.data.geometry.WebPolygon;
import com.esri.adf.web.data.geometry.WebPolyline;

public class WebGeometryConverterFactory {
	private static final Logger _logger = LogManager.getLogger(WebGeometryConverterFactory.class);
	
	public static IWebGeometryConverter getInstance(WebContext wContext, WebGeometry geometry) throws WebGeometryConversionNotSupported {
		IWebGeometryConverter converter = null;
		
		if (geometry instanceof WebPoint) {
			converter = new WebPointConverter();
		} else if (geometry instanceof WebPolygon) {
			converter = new WebPolygonConverter(wContext);
		} else if (geometry instanceof WebPolyline) {
			converter = new WebPolylineConverter(WebPolylineConverter.GMLPolylineType.LineString);
		} else if (geometry instanceof WebExtent) {
			converter = new WebExtentConverter(wContext);
		} else {
			_logger.warn("Attempt to convert WebGeometry type " + geometry.getGeometryType() + " which is not supported");
			throw new WebGeometryConversionNotSupported(geometry.getGeometryType() + " conversion to GML not supported");
		}
		
		return converter;
	}
}