rrenkert@41: package de.intevation.mxd.writer;
rrenkert@41:
rrenkert@41: import org.apache.log4j.Logger;
rrenkert@41:
rrenkert@41: import org.w3c.dom.Document;
rrenkert@41: import org.w3c.dom.Element;
rrenkert@41: import org.w3c.dom.NodeList;
rrenkert@42:
rrenkert@98: import java.io.File;
rrenkert@98:
rrenkert@41: import javax.xml.xpath.XPathConstants;
rrenkert@41:
rrenkert@41: import edu.umn.gis.mapscript.mapObj;
rrenkert@41: import edu.umn.gis.mapscript.layerObj;
rrenkert@42: import edu.umn.gis.mapscript.classObj;
rrenkert@42:
rrenkert@41: import edu.umn.gis.mapscript.MS_UNITS;
rrenkert@42: import edu.umn.gis.mapscript.MS_LAYER_TYPE;
rrenkert@41:
rrenkert@41: import de.intevation.mxd.utils.XMLUtils;
rrenkert@41:
rrenkert@41: /**
rrenkert@43: * The Mapfile Writer.
rrenkert@43: * This Writer uses the MapScript Java API to create Mapfiles from a DOM.
rrenkert@41: *
rrenkert@41: * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
rrenkert@41: */
rrenkert@41: public class MapScriptWriter
rrenkert@41: implements IWriter
rrenkert@41: {
rrenkert@43: /**
rrenkert@43: * The Logger.
rrenkert@43: */
rrenkert@43: private static final Logger logger = Logger.getLogger(MapScriptWriter.class);
rrenkert@43:
rrenkert@43: /**
rrenkert@43: * Private member.
rrenkert@43: */
rrenkert@41: private Document root;
rrenkert@41: private mapObj map;
rrenkert@55: private String mapFilename;
rrenkert@41:
rrenkert@41: public MapScriptWriter() {
rrenkert@55: map = new mapObj("");
rrenkert@55: mapFilename = "";
rrenkert@41: }
rrenkert@41:
rrenkert@55: public MapScriptWriter(String templ, String filename) {
rrenkert@55: map = new mapObj(templ);
rrenkert@55: mapFilename = filename;
rrenkert@41: }
rrenkert@41:
rrenkert@43: /**
rrenkert@43: * Write the mapfile.
rrenkert@43: * @param doc The root document containin the map attributes.
rrenkert@43: *
rrenkert@43: * @return Currently always true.
rrenkert@43: */
rrenkert@87: public boolean write(Document doc)
rrenkert@87: throws Exception {
rrenkert@41: logger.debug("write()");
rrenkert@41: this.root = doc;
rrenkert@41:
rrenkert@41: //Get the filename.
rrenkert@41: Element fileNode = (Element)XMLUtils.xpath(
rrenkert@41: root,
rrenkert@41: "/mxd/file",
rrenkert@41: XPathConstants.NODE);
rrenkert@41: //Write the map attributes.
rrenkert@41: writeMap();
rrenkert@42: //Write the layers.
rrenkert@42: writeLayer();
rrenkert@41: //Save the map.
rrenkert@42: mapObj cloneMap = map.cloneMap();
rrenkert@55: cloneMap.save(mapFilename);
rrenkert@41: return true;
rrenkert@41: }
rrenkert@41:
rrenkert@43: /**
rrenkert@43: * Create the map object and set the attributes.
rrenkert@43: */
rrenkert@41: private void writeMap() {
rrenkert@41: logger.debug("writeMap()");
rrenkert@41: //Get the map.
rrenkert@41: Element mapNode = (Element)XMLUtils.xpath(
rrenkert@41: root,
rrenkert@41: "/mxd/map",
rrenkert@41: XPathConstants.NODE);
rrenkert@41:
rrenkert@41: //Set the name.
rrenkert@41: map.setName(mapNode.getAttribute("name"));
rrenkert@42: map.setMetaData("wms_title", mapNode.getAttribute("name"));
rrenkert@41: //Set the extent.
rrenkert@41: map.setExtent(
rrenkert@41: Double.parseDouble(mapNode.getAttribute("extent_min_x")),
rrenkert@41: Double.parseDouble(mapNode.getAttribute("extent_min_y")),
rrenkert@41: Double.parseDouble(mapNode.getAttribute("extent_max_x")),
rrenkert@41: Double.parseDouble(mapNode.getAttribute("extent_max_y")));
rrenkert@41:
rrenkert@41: //Set the units.
rrenkert@41: String units = mapNode.getAttribute("units");
rrenkert@41: MS_UNITS msu;
rrenkert@41: if(units.equals("feet")) {
rrenkert@41: msu = MS_UNITS.MS_FEET;
rrenkert@41: }
rrenkert@41: else if(units.equals("inches")) {
rrenkert@41: msu = MS_UNITS.MS_INCHES;
rrenkert@41: }
rrenkert@41: else if(units.equals("kilometers")) {
rrenkert@41: msu = MS_UNITS.MS_KILOMETERS;
rrenkert@41: }
rrenkert@41: else if(units.equals("meters")) {
rrenkert@41: msu = MS_UNITS.MS_METERS;
rrenkert@41: }
rrenkert@41: else if(units.equals("miles")) {
rrenkert@41: msu = MS_UNITS.MS_MILES;
rrenkert@41: }
rrenkert@41: else if(units.equals("nauticalmiles")) {
rrenkert@41: msu = MS_UNITS.MS_NAUTICALMILES;
rrenkert@41: }
rrenkert@41: else if(units.equals("points")) {
rrenkert@41: msu = MS_UNITS.MS_PIXELS;
rrenkert@41: }
rrenkert@41: else {
rrenkert@57: msu = MS_UNITS.MS_METERS;
rrenkert@41: }
rrenkert@41: map.setUnits(msu);
rrenkert@41:
rrenkert@41: //TODO: Find out whats the correct scale value.
rrenkert@41: //map.setScaledenom(Double.parseDouble(mapNode.getAttribute("scale")));
rrenkert@41: }
rrenkert@41:
rrenkert@43: /**
rrenkert@43: * Create layer objects and set the attributes.
rrenkert@43: */
rrenkert@87: private void writeLayer()
rrenkert@87: throws Exception {
rrenkert@42: logger.debug("writeLayer()");
rrenkert@42: Element mapNode = (Element)XMLUtils.xpath(
rrenkert@42: root,
rrenkert@42: "/mxd/map",
rrenkert@42: XPathConstants.NODE);
rrenkert@42: NodeList list = mapNode.getElementsByTagName("layer");
rrenkert@42: for(int i = 0; i < list.getLength(); i++) {
rrenkert@42: Element layerElement = (Element)list.item(i);
rrenkert@42: layerObj layer = new layerObj(map);
rrenkert@42:
rrenkert@42: //The layer name.
rrenkert@42: layer.setName(layerElement.getAttribute("name"));
rrenkert@42:
rrenkert@42: //The layer status.
rrenkert@42: String stat = layerElement.getAttribute("status");
rrenkert@42: if (stat.equals("on")) {
rrenkert@42: layer.setStatus(1);
rrenkert@42: }
rrenkert@42: else {
rrenkert@42: layer.setStatus(0);
rrenkert@42: }
rrenkert@42:
rrenkert@42: //The scale.
rrenkert@42: double maxScale =
rrenkert@42: Double.parseDouble(layerElement.getAttribute("max_scale"));
rrenkert@42: double minScale =
rrenkert@42: Double.parseDouble(layerElement.getAttribute("min_scale"));
rrenkert@42: layer.setMaxscaledenom(maxScale);
rrenkert@42: layer.setMinscaledenom(minScale);
rrenkert@42:
rrenkert@42: //The layer type.
rrenkert@42: String type = layerElement.getAttribute("type");
rrenkert@42: if(type.equals("point")) {
rrenkert@42: layer.setType(MS_LAYER_TYPE.MS_LAYER_POINT);
rrenkert@42: }
rrenkert@62: else if (type.equals("line")) {
rrenkert@62: layer.setType(MS_LAYER_TYPE.MS_LAYER_LINE);
rrenkert@62: }
rrenkert@97: else if (type.equals("polygon")) {
rrenkert@97: layer.setType(MS_LAYER_TYPE.MS_LAYER_POLYGON);
rrenkert@97: }
rrenkert@102: layer.setTileitem("");
rrenkert@42:
rrenkert@42: //The layer datasource.
rrenkert@98: String datasource = "";
rrenkert@98: if(layerElement.hasAttribute("workspace")) {
rrenkert@98: datasource = layerElement.getAttribute("workspace");
rrenkert@98: datasource += File.separator;
rrenkert@98: }
rrenkert@98: datasource += layerElement.getAttribute("data_source");
rrenkert@98: layer.setData(datasource);
rrenkert@42:
rrenkert@42: //Write classes.
rrenkert@42: writeClass(layer, layerElement);
rrenkert@42: }
rrenkert@41:
rrenkert@41: }
rrenkert@41:
rrenkert@42: /**
rrenkert@42: * Adds the classes to the layer.
rrenkert@42: * @param layer Mapscript layer object.
rrenkert@42: * @param layerElement Dom element containing the class attributes.
rrenkert@42: */
rrenkert@87: private void writeClass(layerObj layer, Element layerElement)
rrenkert@87: throws Exception {
rrenkert@87: logger.debug("writeClass(layerObj, Element)");
rrenkert@42: //Get all renderer elements (renderer in arcgis equals class in the
rrenkert@42: //mapfile.)
rrenkert@42: NodeList list = layerElement.getElementsByTagName("renderer");
rrenkert@41:
rrenkert@42: //Create all found class objects and write the symbols and styles for
rrenkert@42: //each class.
rrenkert@42: for(int i = 0; i < list.getLength(); i++) {
rrenkert@42: Element classElement = (Element)list.item(i);
rrenkert@42: classObj co = new classObj(layer);
rrenkert@99: String name = classElement.getAttribute("name");
rrenkert@99: if (name.equals("")) {
rrenkert@99: name = layerElement.getAttribute("name");
rrenkert@99: if (list.getLength() > 1) {
rrenkert@99: name += "-" + i;
rrenkert@99: }
rrenkert@99: }
rrenkert@99: co.setName (name);
rrenkert@44: if(classElement.hasAttribute("field_count")) {
rrenkert@44: int count =
rrenkert@44: Integer.parseInt(classElement.getAttribute("field_count"));
rrenkert@44: String exp = "";
rrenkert@44: for(int j = 0; j < count; j++) {
rrenkert@44: //TODO Find a way to create Expressions.
rrenkert@44: exp = "([" + classElement.getAttribute("expression_field_" + j);
rrenkert@46: exp += "] " + classElement.getAttribute("expression_operator");
rrenkert@46: exp += " " + classElement.getAttribute("value") + ")";
rrenkert@44: }
rrenkert@44: co.setExpression(exp);
rrenkert@44: }
rrenkert@42: //Write symbols and styles.
rrenkert@97: NodeList l = classElement.getChildNodes();
rrenkert@97: for (int j = 0; j < l.getLength(); j++) {
rrenkert@97: Element elem = (Element)l.item(j);
rrenkert@97:
rrenkert@97: String type = layerElement.getAttribute("type");
rrenkert@97: if(type.equals("point") && elem.getTagName().equals("symbol")) {
rrenkert@87: MarkerStyleWriter swriter = new MarkerStyleWriter (this.map, co);
rrenkert@97: swriter.write (elem);
rrenkert@87: }
rrenkert@97: else if(type.equals("line") && elem.getTagName().equals("symbol")) {
rrenkert@95: LineStyleWriter swriter = new LineStyleWriter (this.map, co);
rrenkert@97: swriter.write (elem);
rrenkert@97: }
rrenkert@97: else if(type.equals("polygon") && elem.getTagName().equals("symbol")) {
rrenkert@97: FillStyleWriter swriter = new FillStyleWriter (this.map, co);
rrenkert@97: swriter.write (elem);
rrenkert@87: }
rrenkert@87: }
rrenkert@42: }
rrenkert@41: }
rrenkert@41: }
rrenkert@41: