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/**
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* Copyright (C) 2009 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.ext.geo;
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.StringWriter;
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import java.net.URL;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.TreeSet;
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import javax.xml.stream.XMLOutputFactory;
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import javax.xml.stream.XMLStreamException;
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import javax.xml.stream.XMLStreamWriter;
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import org.apache.log4j.Logger;
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import org.jdom.Element;
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import org.jdom.JDOMException;
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import org.jdom.Namespace;
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import eu.etaxonomy.cdm.common.CdmUtils;
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import eu.etaxonomy.cdm.common.XmlHelp;
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/**
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* Holds all values to map an NamedArea to a geo service area.
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*
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* TODO it must be possible to distinguish mappings for multiple layers in the same map service,
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* that is the combination of GeoServiceType, URL and layer would be a unique key.
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* This is however conflicting with the concept of the subAreas which allows to combine multiple
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* polygons from different layers.
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* <BR><BR>
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* see also https://dev.e-taxonomy.eu/redmine/issues/4263
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*
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* @author a.mueller
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* @since 11.08.2011
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*/
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public class GeoServiceArea {
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@SuppressWarnings("unused")
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private static final Logger logger = Logger.getLogger(GeoServiceArea.class);
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private static final String VALUE = "value";
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private static final String FIELD = "field";
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private static final String LAYER = "layer";
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private static final String AREA = "area";
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private static final String MAP_SERVICE_NAMESPACE = "http://www.etaxonomy.eu/cdm";
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private static final String MAP_SERVICE = "mapService";
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public enum GeoServiceType{
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EDIT("Edit Geo Service"),
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WMS("WMS Service");
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private final String label;
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private GeoServiceType(String label){
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this.label = label;
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}
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public String getLabel(){
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return label;
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}
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}
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private final TreeSet<SubArea> subAreas = new TreeSet<>();
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private URL serviceUri;
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private GeoServiceType type;
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public class SubArea implements Comparable<SubArea>{
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private String layer;
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private String field;
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private String value;
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@Override
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public int hashCode() {
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int hash;
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hash = 236435;
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hash += layer != null ? layer.hashCode() * 29 : 32;
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hash += field != null ? field.hashCode() * 31 : 32;
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hash += value != null ? value.hashCode() * 37 : 32;
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return hash;
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}
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@Override
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public boolean equals(Object otherArea) {
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if (! (otherArea instanceof SubArea)){
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return false;
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}
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SubArea subArea = (SubArea)otherArea;
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if (CdmUtils.nullSafeEqual(layer, subArea.layer)
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&& CdmUtils.nullSafeEqual(field, subArea.field)
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&& CdmUtils.nullSafeEqual(value, subArea.value)
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){
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return true;
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}else{
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return false;
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}
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}
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@Override
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public int compareTo(SubArea otherArea) {
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int compareLayer = CdmUtils.Nz(this.layer).compareToIgnoreCase(CdmUtils.Nz(otherArea.layer));
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int compareField = CdmUtils.Nz(this.field).compareToIgnoreCase(CdmUtils.Nz(otherArea.field));
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int compareValue = CdmUtils.Nz(this.value).compareToIgnoreCase(CdmUtils.Nz(otherArea.value));
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if (compareLayer != 0){
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return compareLayer;
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}else if (compareField != 0 ){
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return compareField;
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}else {
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return compareValue;
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}
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}
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}
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public void add(String layer, String field, String value){
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SubArea newArea = new SubArea();
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newArea.layer = layer;
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newArea.field = field;
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newArea.value = value;
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subAreas.add(newArea);
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}
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/**
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* Returns the areas as a layer, field, area nested map.
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* @return
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*/
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public Map<String, Map<String, List<String>>> getAreasMap(){
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Map<String, Map<String, List<String>>> result = new HashMap<>();
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for (SubArea area : subAreas){
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//layer
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Map<String, List<String>> layer = result.get(area.layer);
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if (layer == null ){
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layer = new HashMap<>();
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result.put(area.layer, layer);
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}
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//field
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List<String> field = layer.get(area.field);
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if (field == null ){
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field = new ArrayList<>();
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layer.put(area.field, field);
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}
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//value
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if (! field.contains(area.value)){
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field.add(area.value);
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}
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}
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return result;
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}
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public List<SubArea> getAreasList(){
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List<SubArea> result = new ArrayList<>();
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for (SubArea area : subAreas){
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result.add(area);
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}
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return result;
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}
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public static boolean isAreaMapping(String xml){
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//TODO check by parsing or only testing root + namespace
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GeoServiceArea mapping = valueOf(xml);
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if (mapping != null){
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return true;
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}else{
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return false;
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}
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}
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public static GeoServiceArea valueOf (String xml){
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if (xml == null){
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return null;
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}
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// StringReader reader = new StringReader (xml);
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// (new InputSource(reader));
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// InputStream is = new java.io.StringBufferInputStream(xml);
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InputStream is = new ByteArrayInputStream(xml.getBytes());
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GeoServiceArea result = new GeoServiceArea();
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try {
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Element root = XmlHelp.getRoot(is);
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if (! root.getName().equals(MAP_SERVICE) || ! root.getNamespace().getURI().equals(MAP_SERVICE_NAMESPACE) ){
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return null;
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}else{
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//TODO schema validation
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Namespace ns = root.getNamespace();
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List<Element> elAreas = root.getChildren(AREA, ns);
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for (Element elArea : elAreas){
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Element layer = elArea.getChild(LAYER, ns);
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Element field = elArea.getChild(FIELD, ns);
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//TODO multiple values
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List<Element> values = elArea.getChildren(VALUE, ns);
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for (Element value : values){
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result.add(layer.getTextTrim(), field.getTextTrim(), value.getTextTrim());
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}
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}
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return result;
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}
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} catch (JDOMException e) {
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throw new RuntimeException(e);
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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//TODO use JAXB or other marshalling techniques
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public String toXml() throws XMLStreamException{
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XMLStreamWriter writer = null;
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XMLOutputFactory factory = XMLOutputFactory.newInstance();
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StringWriter stringWriter = new StringWriter();
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writer = factory.createXMLStreamWriter(stringWriter);
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String rootNamespace = MAP_SERVICE_NAMESPACE;
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String rootName = MAP_SERVICE;
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// create header
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writer.writeStartDocument();
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writer.setDefaultNamespace(rootNamespace);
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// create root element
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writer.writeStartElement(rootName);
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writer.writeNamespace(null, rootNamespace);
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writer.writeAttribute("type", "editMapService");
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writeAreas(writer);
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writer.writeEndElement();
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writer.writeEndDocument();
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return stringWriter.getBuffer().toString();
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}
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private void writeAreas(XMLStreamWriter writer) throws XMLStreamException {
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Map<String, Map<String, List<String>>> areaMap = getAreasMap();
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//TODO multiple
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for (String layerKey : areaMap.keySet()){
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Map<String, List<String>> layer = areaMap.get(layerKey);
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for (String fieldKey: layer.keySet()){
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List<String> field = layer.get(fieldKey);
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//area
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writer.writeStartElement(AREA);
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//layer
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writer.writeStartElement(LAYER);
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writer.writeCharacters(layerKey);
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writer.writeEndElement();
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//field
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writer.writeStartElement(FIELD);
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writer.writeCharacters(fieldKey);
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writer.writeEndElement();
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//value
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for (String value : field){
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writer.writeStartElement(VALUE);
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writer.writeCharacters(value);
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writer.writeEndElement();
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}
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writer.writeEndElement();
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}
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}
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}
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public int size() {
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return this.subAreas.size();
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}
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}
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