/[schmitzm]/trunk/src/skrueger/geotools/StyledLayerUtil.java
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trunk/src/skrueger/geotools/StyledMapUtil.java revision 2 by mojays, Tue Feb 24 22:43:52 2009 UTC branches/1.0-gt2-2.6/src/skrueger/geotools/StyledLayerUtil.java revision 315 by mojays, Wed Aug 26 11:03:27 2009 UTC
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1  package skrueger.geotools;  /*******************************************************************************
2     * Copyright (c) 2009 Martin O. J. Schmitz.
3  import java.text.DecimalFormat;   *
4  import java.util.Map;   * This file is part of the SCHMITZM library - a collection of utility
5  import java.util.HashMap;   * classes based on Java 1.6, focusing (not only) on Java Swing
6  import java.util.List;   * and the Geotools library.
7  import java.net.URL;   *
8     * The SCHMITZM project is hosted at:
9  import org.geotools.feature.FeatureCollection;   * http://wald.intevation.org/projects/schmitzm/
10  import org.geotools.map.MapLayer;   *
11  import org.geotools.map.DefaultMapLayer;   * This program is free software; you can redistribute it and/or
12  import org.geotools.coverage.grid.GridCoverage2D;   * modify it under the terms of the GNU Lesser General Public License
13  import org.geotools.coverage.grid.io.AbstractGridCoverage2DReader;   * as published by the Free Software Foundation; either version 3
14  import org.geotools.styling.ColorMap;   * of the License, or (at your option) any later version.
15  import org.geotools.styling.ColorMapEntry;   *
16  import org.geotools.styling.Style;   * This program is distributed in the hope that it will be useful,
17     * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  import org.apache.log4j.Logger;   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19     * GNU General Public License for more details.
20  import org.jdom.Element;   *
21  import org.jdom.Document;   * You should have received a copy of the GNU Lesser General Public License (license.txt)
22  import org.jdom.input.SAXBuilder;   * along with this program; if not, write to the Free Software
23  import org.jdom.output.XMLOutputter;   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
24     * or try this link: http://www.gnu.org/licenses/lgpl.html
25  import schmitzm.geotools.styling.StylingUtil;   *
26  import skrueger.AttributeMetaData;   * Contributors:
27  import skrueger.RasterLegendData;   *     Martin O. J. Schmitz - initial API and implementation
28  import skrueger.i8n.Translation;   *     Stefan A. Krüger - additional utility classes
29  import schmitzm.io.IOUtil;   ******************************************************************************/
30  import java.io.File;  package skrueger.geotools;
31  import java.io.FileNotFoundException;  
32  import schmitzm.lang.LangUtil;  import java.io.File;
33  import schmitzm.swing.SwingUtil;  import java.io.FileNotFoundException;
34    import java.io.FileWriter;
35  import java.io.FileWriter;  import java.net.URL;
36    import java.text.DecimalFormat;
37  /**  import java.util.HashMap;
38   * This class provides static helper methods for dealing with  import java.util.List;
39   * {@link StyledMapInterface} stuff.  import java.util.Map;
40   * @author <a href="mailto:[email protected]">Martin Schmitz</a> (University of Bonn/Germany)  import java.util.SortedMap;
41   * @version 1.0  import java.util.TreeMap;
42   */  
43  public class StyledMapUtil {  import org.apache.log4j.Logger;
44    private static final Logger LOGGER = Logger.getLogger(StyledMapUtil.class.getName());  import org.geotools.coverage.grid.GridCoverage2D;
45    private static final SAXBuilder SAX_BUILDER = new SAXBuilder();  import org.geotools.coverage.grid.io.AbstractGridCoverage2DReader;
46    private static final XMLOutputter XML_OUTPUTTER = new XMLOutputter();  import org.geotools.feature.FeatureCollection;
47    import org.geotools.map.DefaultMapLayer;
48    /** URL for Atlas XML schema */  import org.geotools.map.MapLayer;
49    public static final String AMLURI = "http://www.wikisquare.de/AtlasML";  import org.geotools.styling.ColorMap;
50    /** Name of the XML Element for the attribute meta data map */  import org.geotools.styling.ColorMapEntry;
51    public static final String ELEM_NAME_AMD = "attributeMetaData";  import org.geotools.styling.RasterSymbolizer;
52    /** Name of the XML Element for the raster legend data */  import org.geotools.styling.Style;
53    public static final String ELEM_NAME_RLD = "rasterLegendData";  import org.jdom.Document;
54    /** Name of the XML Element for an attribute meta data map entry */  import org.jdom.Element;
55    public static final String ELEM_NAME_ATTRIBUTE = "dataAttribute";  import org.jdom.input.SAXBuilder;
56    /** Name of the XML Element for an raster legend data entry */  import org.jdom.output.XMLOutputter;
57    public static final String ELEM_NAME_RASTERLEGEND = "rasterLegendItem";  
58    /** Name of the XML Element for a translation */  import schmitzm.geotools.styling.StylingUtil;
59    public static final String ELEM_NAME_TRANSLATION = "translation";  import schmitzm.io.IOUtil;
60    import schmitzm.lang.LangUtil;
61    /**  import schmitzm.swing.SwingUtil;
62     * Creates a Geotools {@link MapLayer} from an object. If the object is a  import skrueger.AttributeMetaData;
63     * {@link StyledMapInterface} then its sytle is used. In case of direct  import skrueger.RasterLegendData;
64     * Geotools objects ({@link GridCoverage2D}, {@link AbstractGridCoverage2DReader},  import skrueger.i8n.Translation;
65     * {@link FeatureCollection}) a default style is generated.  
66     * @param object an Object  /**
67     * @exception Exception if {@code null} is given as object or an error occurs during layer creation   * This class provides static helper methods for dealing with
68     */   * {@link StyledLayerInterface} stuff.
69    public static MapLayer createMapLayer(Object object) throws Exception {   * @author <a href="mailto:[email protected]">Martin Schmitz</a> (University of Bonn/Germany)
70      return createMapLayer(object,null);   * @version 1.0
71    }   */
72    public class StyledLayerUtil {
73    /**    private static final Logger LOGGER = Logger.getLogger(StyledLayerUtil.class.getName());
74     * Creates a Geotools {@link MapLayer} from an object. If the object is a    private static final SAXBuilder SAX_BUILDER = new SAXBuilder();
75     * {@link StyledMapInterface} then its sytle is used. In case of direct    private static final XMLOutputter XML_OUTPUTTER = new XMLOutputter();
76     * Geotools objects ({@link GridCoverage2D}, {@link AbstractGridCoverage2DReader},  
77     * {@link FeatureCollection}) a default style is generated.    /** URL for Atlas XML schema */
78     * @param object an Object    public static final String AMLURI = "http://www.wikisquare.de/AtlasML";
79     * @param forcedStyle (SLD-)Style to force for the object    /** Name of the XML Element for the attribute meta data map */
80     * @exception Exception if {@code null} is given as object or an error occurs during layer creation    public static final String ELEM_NAME_AMD = "attributeMetaData";
81     */    /** Name of the XML Element for the raster legend data */
82    public static MapLayer createMapLayer(Object object, Style forcedStyle) throws Exception {    public static final String ELEM_NAME_RLD = "rasterLegendData";
83      MapLayer layer     = null;    /** Name of the XML Element for an attribute meta data map entry */
84      Style    style     = null;    public static final String ELEM_NAME_ATTRIBUTE = "dataAttribute";
85      if ( object instanceof StyledMapInterface ) {    /** Name of the XML Element for an raster legend data entry */
86        style =  ((StyledMapInterface<?>)object).getStyle();    public static final String ELEM_NAME_RASTERLEGEND = "rasterLegendItem";
87        object = ((StyledMapInterface<?>)object).getGeoObject();    /** Name of the XML Element for a translation */
88      }    public static final String ELEM_NAME_TRANSLATION = "translation";
89      if ( forcedStyle != null )  
90        style = forcedStyle;    /**
91      if ( style == null )     * Creates a Geotools {@link MapLayer} from an object. If the object is a
92        style = StylingUtil.createDefaultStyle(object);     * {@link StyledLayerInterface} then its sytle is used. In case of direct
93       * Geotools objects ({@link GridCoverage2D}, {@link AbstractGridCoverage2DReader},
94      if (object instanceof GridCoverage2D)     * {@link FeatureCollection}) a default style is generated.
95        layer = new DefaultMapLayer( (GridCoverage2D) object, style);     * @param object an Object
96      if (object instanceof AbstractGridCoverage2DReader)     * @exception Exception if {@code null} is given as object or an error occurs during layer creation
97        layer = new DefaultMapLayer( (AbstractGridCoverage2DReader) object, style);     */
98      if (object instanceof FeatureCollection)    public static MapLayer createMapLayer(Object object) throws Exception {
99        layer = new DefaultMapLayer( (FeatureCollection) object, style);      return createMapLayer(object,null);
100      }
101      if ( layer == null )  
102        throw new Exception("Can not create MapLayer from "+(object == null ? "null" : object.getClass()));    /**
103       * Creates a Geotools {@link MapLayer} from an object. If the object is a
104      return layer;     * {@link StyledLayerInterface} then its sytle is used. In case of direct
105    }     * Geotools objects ({@link GridCoverage2D}, {@link AbstractGridCoverage2DReader},
106       * {@link FeatureCollection}) a default style is generated.
107    /**     * @param object an Object
108     * Creates an default instance of {@link StyledMapInterface} for a Geotools     * @param forcedStyle (SLD-)Style to force for the object
109     * object ({@link GridCoverage2D}, {@link FeatureCollection}) with a default     * @exception Exception if {@code null} is given as object or an error occurs during layer creation
110     * style.     */
111     * @param object an Object    public static MapLayer createMapLayer(Object object, Style forcedStyle) throws Exception {
112     * @param title  title for the object      MapLayer layer     = null;
113     * @exception UnsupportedOperationException if {@code null} is given as object or an error occurs during creation      Style    style     = null;
114     */      if ( object instanceof StyledLayerInterface ) {
115    public static StyledMapInterface<?> createStyledMap(Object object, String title) {        style =  ((StyledLayerInterface<?>)object).getStyle();
116       return createStyledMap(object, title, null);        object = ((StyledLayerInterface<?>)object).getGeoObject();
117    }      }
118        if ( forcedStyle != null )
119    /**        style = forcedStyle;
120     * Creates an default instance of {@link StyledMapInterface} for a Geotools      if ( style == null )
121     * object ({@link GridCoverage2D}, {@link FeatureCollection}) with a given        style = StylingUtil.createDefaultStyle(object);
122     * style.  
123     * @param object an Object      if (object instanceof GridCoverage2D)
124     * @param title  title for the object        layer = new DefaultMapLayer( (GridCoverage2D) object, style);
125     * @param style  style and meta data for the object      if (object instanceof AbstractGridCoverage2DReader)
126     * @exception UnsupportedOperationException if {@code null} is given as object or an error occurs during creation        layer = new DefaultMapLayer( (AbstractGridCoverage2DReader) object, style);
127     */      if (object instanceof FeatureCollection)
128    public static StyledMapInterface<?> createStyledMap(Object object, String title, StyledMapStyle style) {        layer = new DefaultMapLayer( (FeatureCollection) object, style);
129      StyledMapInterface<?> styledObject = null;  
130        if ( layer == null )
131      String id = (title != null) ? title : "defaultID";        throw new Exception("Can not create MapLayer from "+(object == null ? "null" : object.getClass()));
132    
133      if ( object instanceof GridCoverage2D )      return layer;
134        styledObject = new StyledGridCoverage(    }
135            (GridCoverage2D)object,  
136            id,    /**
137            title,     * Creates an default instance of {@link StyledLayerInterface} for a Geotools
138            style     * object ({@link GridCoverage2D}, {@link FeatureCollection}) with a default
139        );     * style.
140      else if ( object instanceof AbstractGridCoverage2DReader )     * @param object an Object
141             styledObject = new StyledGridCoverageReader(     * @param title  title for the object
142                 (AbstractGridCoverage2DReader)object,     * @exception UnsupportedOperationException if {@code null} is given as object or an error occurs during creation
143                 id,     */
144                 title,    public static StyledLayerInterface<?> createStyledLayer(Object object, String title) {
145                 style       return createStyledLayer(object, title, null);
146             );    }
147      else if ( object instanceof FeatureCollection )  
148        styledObject = new StyledFeatureCollection(    /**
149            (FeatureCollection)object,     * Creates an default instance of {@link StyledLayerInterface} for a Geotools
150            id,     * object ({@link GridCoverage2D}, {@link FeatureCollection}) with a given
151            title,     * style.
152            style     * @param object an Object
153        );     * @param title  title for the object
154       * @param style  style and meta data for the object
155      if ( styledObject == null )     * @exception UnsupportedOperationException if {@code null} is given as object or an error occurs during creation
156        throw new UnsupportedOperationException("Can not create StyledMapInterface object from "+(object == null ? "null" : object.getClass()));     */
157      public static StyledLayerInterface<?> createStyledLayer(Object object, String title, StyledLayerStyle style) {
158      return styledObject;      StyledLayerInterface<?> styledLayer = null;
159    }  
160        String id = (title != null) ? title : "defaultID";
161    /**  
162     * Parses a {@link AttributeMetaData} object from an JDOM-{@link Element}.      if ( object instanceof GridCoverage2D )
163     * This method works like {@link AMLImport#parseDataAttribute(org.w3c.dom.Node},        styledLayer = new StyledGridCoverage(
164     * but for JDOM.            (GridCoverage2D)object,
165     * @param element {@link Element} to parse            id,
166     */            title,
167    public static AttributeMetaData parseAttributeMetaData(final Element element) {            style
168      final Integer col = Integer.valueOf(element.getAttributeValue("col"));        );
169      final Boolean visible = Boolean.valueOf(element.getAttributeValue("visible"));      else if ( object instanceof AbstractGridCoverage2DReader )
170      final String unit = element.getAttributeValue("unit");             styledLayer = new StyledGridCoverageReader(
171                   (AbstractGridCoverage2DReader)object,
172      Translation name = new Translation();                 id,
173      Translation desc = new Translation();                 title,
174      for (final Element childElement : (List<Element>)element.getChildren()) {                 style
175        if (childElement.getName() == null)             );
176          continue;      else if ( object instanceof FeatureCollection )
177          styledLayer = new StyledFeatureCollection(
178        if (childElement.getName().equals("name"))            (FeatureCollection)object,
179          name = parseTranslation(childElement);            id,
180        else if (childElement.getName().equals("desc"))            title,
181          desc = parseTranslation(childElement);            style
182      }        );
183      return new AttributeMetaData(col, visible, name, desc, unit);      
184    }      if ( styledLayer == null )
185          throw new UnsupportedOperationException("Can not create StyledLayerInterface object from "+(object == null ? "null" : object.getClass()));
186    /**  
187     * Parses a {@link AttributeMetaData} map from an JDOM-{@link Element}      return styledLayer;
188     * with {@code <attribute>}-childs.    }
189     * @param element {@link Element} to parse  
190     */    /**
191    public static Map<Integer,AttributeMetaData> parseAttributeMetaDataMap(final Element element) {     * Return only the visible or invisible entries of an AttributeMetaData-Map.
192      HashMap<Integer,AttributeMetaData> metaData = new HashMap<Integer,AttributeMetaData>();     * @param amdMap AttributeMetaData-Map
193      List<Element> attributesElements = element.getChildren( ELEM_NAME_ATTRIBUTE );     * @param visible indicated whether the visible or invisible entries are
194      for (Element attibuteElement : attributesElements)     *                returned
195      {     */
196        AttributeMetaData attrMetaData = parseAttributeMetaData( attibuteElement );    public static SortedMap<Integer,AttributeMetaData> getVisibleAttributeMetaData(Map<Integer,AttributeMetaData> amdMap, boolean visible) {
197        metaData.put( attrMetaData.getColIdx(), attrMetaData );      SortedMap<Integer,AttributeMetaData> filteredMap = new TreeMap<Integer,AttributeMetaData>();
198      }      for (AttributeMetaData amd : amdMap.values())
199      return metaData;        if ( amd.isVisible() )
200    }          filteredMap.put(amd.getColIdx(), amd);
201        
202    /**      return filteredMap;
203     * Loads a {@link AttributeMetaData} object from an URL.    }
204     * @param documentUrl {@link URL} to parse    
205     * @see #parseAttributeMetaData(Element)    
206     */    /**
207    public static Map<Integer,AttributeMetaData> loadAttributeMetaDataMap(final URL documentUrl) throws Exception {     * Parses a {@link AttributeMetaData} object from an JDOM-{@link Element}.
208      Document document = SAX_BUILDER.build(documentUrl);     * This method works like {@link AMLImport#parseDataAttribute(org.w3c.dom.Node},
209      return parseAttributeMetaDataMap( document.getRootElement() );     * but for JDOM.
210    }     * @param element {@link Element} to parse
211       */
212    /**    public static AttributeMetaData parseAttributeMetaData(final Element element) {
213     * Creates an JDOM {@link Element} for the given {@link AttributeMetaData}      final Integer col = Integer.valueOf(element.getAttributeValue("col"));
214     * object.      final Boolean visible = Boolean.valueOf(element.getAttributeValue("visible"));
215     * @param amd meta data for one attribute      final String unit = element.getAttributeValue("unit");
216     */  
217    public static Element createAttributeMetaDataElement(final AttributeMetaData amd) {      Translation name = new Translation();
218      final Element element = new Element( ELEM_NAME_ATTRIBUTE , AMLURI);      Translation desc = new Translation();
219      element.setAttribute("col", String.valueOf( amd.getColIdx() ) );      for (final Element childElement : (List<Element>)element.getChildren()) {
220      element.setAttribute("visible", String.valueOf( amd.isVisible() ) );        if (childElement.getName() == null)
221      element.setAttribute("unit", amd.getUnit() );          continue;
222      // Creating a aml:name tag...  
223      element.addContent( createTranslationElement("name", amd.getTitle()) );        if (childElement.getName().equals("name"))
224      // Creating a aml:desc tag...          name = parseTranslation(childElement);
225      element.addContent( createTranslationElement("desc", amd.getDesc()) );        else if (childElement.getName().equals("desc"))
226      return element;          desc = parseTranslation(childElement);
227    }      }
228        return new AttributeMetaData(col, visible, name, desc, unit);
229    /**    }
230     * Creates an JDOM {@link Element} for the given {@link AttributeMetaData}  
231     * map.    /**
232     * @param amdMap map of attribute meta data     * Parses a {@link AttributeMetaData} map from an JDOM-{@link Element}
233     */     * with {@code <attribute>}-childs.
234    public static Element createAttributeMetaDataMapElement(final Map<Integer,AttributeMetaData> amdMap) {     * @param element {@link Element} to parse
235      final Element element = new Element( ELEM_NAME_AMD , AMLURI);     */
236      for (AttributeMetaData amd : amdMap.values())    public static Map<Integer,AttributeMetaData> parseAttributeMetaDataMap(final Element element) {
237        element.addContent( createAttributeMetaDataElement( amd ) );      HashMap<Integer,AttributeMetaData> metaData = new HashMap<Integer,AttributeMetaData>();
238      return element;      List<Element> attributesElements = element.getChildren( ELEM_NAME_ATTRIBUTE );
239    }      for (Element attibuteElement : attributesElements)
240        {
241    /**        AttributeMetaData attrMetaData = parseAttributeMetaData( attibuteElement );
242     * Saves a {@link AttributeMetaData AttributeMetaData-Map} to an URL.        metaData.put( attrMetaData.getColIdx(), attrMetaData );
243     * @param amdMap map of {@link AttributeMetaData}      }
244     * @param documentUrl {@link URL} to store the XML      return metaData;
245     */    }
246    public static void saveAttributeMetaDataMap(final Map<Integer,AttributeMetaData> amdMap, final URL documentUrl) throws Exception {  
247      // Create XML-Document    /**
248      final FileWriter out = new FileWriter( new File(documentUrl.toURI()) );     * Loads a {@link AttributeMetaData} object from an URL.
249      XML_OUTPUTTER.output(     * @param documentUrl {@link URL} to parse
250        createAttributeMetaDataMapElement(amdMap),     * @see #parseAttributeMetaData(Element)
251        out     */
252      );    public static Map<Integer,AttributeMetaData> loadAttributeMetaDataMap(final URL documentUrl) throws Exception {
253      out.flush();      Document document = SAX_BUILDER.build(documentUrl);
254      out.close();      return parseAttributeMetaDataMap( document.getRootElement() );
255    }    }
256    
257      /**
258       * Creates an JDOM {@link Element} for the given {@link AttributeMetaData}
259    /**     * object.
260     * Parses a {@link RasterLegendData} object from an JDOM-{@link Element}.     * @param amd meta data for one attribute
261     * This method works like {@link AMLImport#parseRasterLegendData(org.w3c.dom.Node},     */
262     * but for JDOM.    public static Element createAttributeMetaDataElement(final AttributeMetaData amd) {
263     * @param element {@link Element} to parse      final Element element = new Element( ELEM_NAME_ATTRIBUTE , AMLURI);
264     */      element.setAttribute("col", String.valueOf( amd.getColIdx() ) );
265    public static RasterLegendData parseRasterLegendData(Element element) {      element.setAttribute("visible", String.valueOf( amd.isVisible() ) );
266        element.setAttribute("unit", amd.getUnit() );
267      final boolean paintGaps = Boolean.valueOf( element.getAttributeValue("paintGaps") );      // Creating a aml:name tag...
268        element.addContent( createTranslationElement("name", amd.getTitle()) );
269      RasterLegendData rld = new RasterLegendData(paintGaps);      // Creating a aml:desc tag...
270        element.addContent( createTranslationElement("desc", amd.getDesc()) );
271      for ( Element childElement : (List<Element>)element.getChildren() ) {      return element;
272        final String name = childElement.getName();    }
273        // Cancel if it's an attribute  
274        if ( childElement.getChildren().size() == 0 )    /**
275          continue;     * Creates an JDOM {@link Element} for the given {@link AttributeMetaData}
276       * map.
277        if (name.equals( ELEM_NAME_RASTERLEGEND )) {     * @param amdMap map of attribute meta data
278          final String valueAttr = childElement.getAttributeValue("value");     */
279          if ( valueAttr == null )    public static Element createAttributeMetaDataMapElement(final Map<Integer,AttributeMetaData> amdMap) {
280            throw new UnsupportedOperationException("Attribute 'value' missing for definition of <"+ELEM_NAME_RASTERLEGEND+">");      final Element element = new Element( ELEM_NAME_AMD , AMLURI);
281          final double value = Double.valueOf(valueAttr);      for (AttributeMetaData amd : amdMap.values())
282          element.addContent( createAttributeMetaDataElement( amd ) );
283          // first and only item should be the label      return element;
284          final Element labelElement = childElement.getChild("label");    }
285          // id label element is missing, the translation is searched directly  
286          // as childs of the rasterLegendItem element    /**
287          Translation label = parseTranslation( labelElement != null ? labelElement : childElement );     * Saves a {@link AttributeMetaData AttributeMetaData-Map} to an URL.
288          rld.put(value, label);     * @param amdMap map of {@link AttributeMetaData}
289        }     * @param documentUrl {@link URL} to store the XML
290      }     */
291      public static void saveAttributeMetaDataMap(final Map<Integer,AttributeMetaData> amdMap, final URL documentUrl) throws Exception {
292      return rld;      // Create XML-Document
293    }      final FileWriter out = new FileWriter( new File(documentUrl.toURI()) );
294        XML_OUTPUTTER.output(
295    /**        createAttributeMetaDataMapElement(amdMap),
296     * Loads a {@link RasterLegendData} object from an URL.        out
297     * @param documentUrl {@link URL} to parse      );
298     * @see #parseAttributeMetaData(Element)      out.flush();
299     */      out.close();
300    public static RasterLegendData loadRasterLegendData(final URL documentUrl) throws Exception {    }
301      Document document = SAX_BUILDER.build(documentUrl);  
302      return parseRasterLegendData( document.getRootElement() );  
303    }  
304      /**
305   /**     * Parses a {@link RasterLegendData} object from an JDOM-{@link Element}.
306     * Creates an JDOM {@link Element} for the given {@link RasterLegendData}     * This method works like {@link AMLImport#parseRasterLegendData(org.w3c.dom.Node},
307     * map.     * but for JDOM.
308     * @param rld raster legend data     * @param element {@link Element} to parse
309     */     */
310    public static Element createRasterLegendDataElement(final RasterLegendData rld) {    public static RasterLegendData parseRasterLegendData(Element element) {
311      final Element element = new Element( ELEM_NAME_RLD , AMLURI);  
312      element.setAttribute("paintGaps", rld.isPaintGaps().toString());      final boolean paintGaps = Boolean.valueOf( element.getAttributeValue("paintGaps") );
313      for (Double key : rld.getSortedKeys()) {  
314        Element item = new Element( ELEM_NAME_RASTERLEGEND, AMLURI);      RasterLegendData rld = new RasterLegendData(paintGaps);
315        item.setAttribute("value", key.toString());  
316        item.addContent( createTranslationElement("label", rld.get(key)) );      for ( Element childElement : (List<Element>)element.getChildren() ) {
317        element.addContent(item);        final String name = childElement.getName();
318      }        // Cancel if it's an attribute
319      return element;        if ( childElement.getChildren().size() == 0 )
320    }          continue;
321    
322    /**        if (name.equals( ELEM_NAME_RASTERLEGEND )) {
323     * Creates {@link RasterLegendData} from a {@link ColorMap}.          final String valueAttr = childElement.getAttributeValue("value");
324     * @param colorMap  a color map          if ( valueAttr == null )
325     * @param paintGaps indicated whether gaps are painted between the legend items            throw new UnsupportedOperationException("Attribute 'value' missing for definition of <"+ELEM_NAME_RASTERLEGEND+">");
326     * @param digits    number of digits the grid value classes (and legend) are          final double value = Double.valueOf(valueAttr);
327     *                  rounded to (null means no round; >= 0 means digits after comma;  
328     *                  < 0 means digits before comma)    */          // first and only item should be the label
329    public static RasterLegendData generateRasterLegendData(ColorMap colorMap, boolean paintGaps, Integer digits) {          final Element labelElement = childElement.getChild("label");
330      DecimalFormat    decFormat = digits != null ? new DecimalFormat( SwingUtil.getNumberFormatPattern(digits) ) : null;          // id label element is missing, the translation is searched directly
331      RasterLegendData rld       = new RasterLegendData(paintGaps);          // as childs of the rasterLegendItem element
332      for (ColorMapEntry cme : colorMap.getColorMapEntries())          Translation label = parseTranslation( labelElement != null ? labelElement : childElement );
333      {          rld.put(value, label);
334        double value = StylingUtil.getQuantityFromColorMapEntry(cme);        }
335        String label = cme.getLabel();      }
336        // if no label is set (e.g. quantitative style),  
337        // use the value as label      return rld;
338        if ( label == null || label.equals("") )    }
339          if ( digits == null )  
340            label = String.valueOf(value);    /**
341          else     * Loads a {@link RasterLegendData} object from an URL.
342            label = decFormat.format( LangUtil.round(value, digits) );     * @param documentUrl {@link URL} to parse
343        rld.put( value, new Translation("   "+label) );     * @see #parseAttributeMetaData(Element)
344      }     */
345      return rld;    public static RasterLegendData loadRasterLegendData(final URL documentUrl) throws Exception {
346    }      Document document = SAX_BUILDER.build(documentUrl);
347        return parseRasterLegendData( document.getRootElement() );
348    /**    }
349     * Creates {@link RasterLegendData} from the {@link ColorMap} of a style.  
350     * @param style     a raster style (must contain a  {@link RasterSymbolizer})   /**
351     * @param paintGaps indicated whether gaps are painted between the legend items     * Creates an JDOM {@link Element} for the given {@link RasterLegendData}
352     * @param digits    number of digits the grid value classes (and legend) are     * map.
353     *                  rounded to (null means no round; >= 0 means digits after comma;     * @param rld raster legend data
354     *                  < 0 means digits before comma)    */     */
355    public static RasterLegendData generateRasterLegendData(Style style, boolean paintGaps, Integer digits) {    public static Element createRasterLegendDataElement(final RasterLegendData rld) {
356      ColorMap colorMap = StylingUtil.getColorMapFromStyle(style);      final Element element = new Element( ELEM_NAME_RLD , AMLURI);
357      if ( colorMap == null)      element.setAttribute("paintGaps", rld.isPaintGaps().toString());
358        throw new IllegalArgumentException("Color map can not be determined from style!");      for (Double key : rld.getSortedKeys()) {
359      return generateRasterLegendData(colorMap, paintGaps, digits);        Element item = new Element( ELEM_NAME_RASTERLEGEND, AMLURI);
360    }        item.setAttribute("value", key.toString());
361          item.addContent( createTranslationElement("label", rld.get(key)) );
362    /**        element.addContent(item);
363     * Saves a {@link RasterLegendData} to an URL.      }
364     * @param rld raster legend data      return element;
365     * @param documentUrl {@link URL} to store the XML    }
366     */  
367    public static void saveRasterLegendData(final RasterLegendData rld, final URL documentUrl) throws Exception {    /**
368      // Create XML-Document     * Creates {@link RasterLegendData} from a {@link ColorMap}.
369      final FileWriter out = new FileWriter( new File(documentUrl.toURI()) );     * @param colorMap  a color map
370      XML_OUTPUTTER.output(     * @param paintGaps indicated whether gaps are painted between the legend items
371        createRasterLegendDataElement(rld),     * @param digits    number of digits the grid value classes (and legend) are
372        out     *                  rounded to (null means no round; >= 0 means digits after comma;
373      );     *                  < 0 means digits before comma)    */
374      out.flush();    public static RasterLegendData generateRasterLegendData(ColorMap colorMap, boolean paintGaps, Integer digits) {
375      out.close();      DecimalFormat    decFormat = digits != null ? new DecimalFormat( SwingUtil.getNumberFormatPattern(digits) ) : null;
376    }      RasterLegendData rld       = new RasterLegendData(paintGaps);
377        for (ColorMapEntry cme : colorMap.getColorMapEntries())
378    /**      {
379     * Parses a {@link Translation} object from an JDOM-{@link Element}.        double value = StylingUtil.getQuantityFromColorMapEntry(cme);
380     * This method works like {@link AMLImport#parseTranslation(org.w3c.dom.Node},        String label = cme.getLabel();
381     * but for JDOM.        // if no label is set (e.g. quantitative style),
382     * @param element {@link Element} to parse        // use the value as label
383     */        if ( label == null || label.equals("") )
384    public final static Translation parseTranslation(final Element element) {          if ( digits == null )
385      Translation trans = new Translation();            label = String.valueOf(value);
386            else
387      if (element == null)            label = decFormat.format( LangUtil.round(value, digits) );
388       return trans;        rld.put( value, new Translation("   "+label) );
389        }
390      for (final Element translationElement : (List<Element>)element.getChildren()) {      return rld;
391        final String name = translationElement.getName();    }
392        if (name == null)  
393          continue;    /**
394       * Creates {@link RasterLegendData} from the {@link ColorMap} of a style.
395        // lang attribute     * @param style     a raster style (must contain a  {@link RasterSymbolizer})
396        String lang = translationElement.getAttributeValue("lang");     * @param paintGaps indicated whether gaps are painted between the legend items
397        // set the default, if no language code is set     * @param digits    number of digits the grid value classes (and legend) are
398        if ( lang == null )     *                  rounded to (null means no round; >= 0 means digits after comma;
399          lang = Translation.DEFAULT_KEY;     *                  < 0 means digits before comma)    */
400      public static RasterLegendData generateRasterLegendData(Style style, boolean paintGaps, Integer digits) {
401        final String translationText = translationElement.getValue();      ColorMap colorMap = StylingUtil.getColorMapFromStyle(style);
402        if (translationText == null)      if ( colorMap == null)
403          trans.put(lang, "");        throw new IllegalArgumentException("Color map can not be determined from style!");
404        else      return generateRasterLegendData(colorMap, paintGaps, digits);
405          trans.put(lang, translationText);    }
406      }  
407      /**
408      // if no <translation> is given, the value of the node should     * Saves a {@link RasterLegendData} to an URL.
409      // be used as a default translation     * @param rld raster legend data
410      if (trans.size() == 0)     * @param documentUrl {@link URL} to store the XML
411        trans.put( Translation.DEFAULT_KEY, element.getValue() );     */
412      //     trans = new Translation( ((List<Element>)element.getChildren()).get(0).getValue() );    public static void saveRasterLegendData(final RasterLegendData rld, final URL documentUrl) throws Exception {
413        // Create XML-Document
414      return trans;      final FileWriter out = new FileWriter( new File(documentUrl.toURI()) );
415    }      XML_OUTPUTTER.output(
416          createRasterLegendDataElement(rld),
417    /**        out
418     * Creates an JDOM {@link Element} for the given {@link Translation}.      );
419     * @param tagname Name of the Element      out.flush();
420     * @param translation Translation to store in the Element      out.close();
421     */    }
422    public final static Element createTranslationElement(String tagname, Translation translation) {  
423      Element element = new Element(tagname, AMLURI);    /**
424      if ( translation == null )     * Parses a {@link Translation} object from an JDOM-{@link Element}.
425        throw new UnsupportedOperationException("Translation element can not be created from null!");     * This method works like {@link AMLImport#parseTranslation(org.w3c.dom.Node},
426       * but for JDOM.
427      // If only a default translation is set, the <translation lang="..">..</tranlation>     * @param element {@link Element} to parse
428      // part is not used     */
429      if (translation.keySet().size() == 1 && translation.get(Translation.DEFAULT_KEY) != null) {    public final static Translation parseTranslation(final Element element) {
430        element.addContent( translation.get(Translation.DEFAULT_KEY) );      Translation trans = new Translation();
431        return element;  
432      }      if (element == null)
433         return trans;
434      // add a <translation lang="..">..</tranlation> part to the element for  
435      // all languages      for (final Element translationElement : (List<Element>)element.getChildren()) {
436      for (String lang : translation.keySet()) {        final String name = translationElement.getName();
437        Element translationElement = new Element( ELEM_NAME_TRANSLATION , AMLURI);        if (name == null)
438        translationElement.setAttribute("lang", lang);          continue;
439        String translationString = translation.get(lang);  
440        if (translationString == null)        // lang attribute
441         translationString = "";        String lang = translationElement.getAttributeValue("lang");
442        translationElement.addContent( translationString );        // set the default, if no language code is set
443        element.addContent(translationElement);        if ( lang == null )
444      }          lang = Translation.DEFAULT_KEY;
445    
446      return element;        final String translationText = translationElement.getValue();
447    }        if (translationText == null)
448            trans.put(lang, "");
449          else
450    /**          trans.put(lang, translationText);
451     * Sets a style to {@link StyledMapInterface}.      }
452     * @param styledObject a styled object  
453     * @param style a Style      // if no <translation> is given, the value of the node should
454     */      // be used as a default translation
455    public static void setStyledMapStyle(StyledMapInterface styledObject, StyledMapStyle<?> style) {      if (trans.size() == 0)
456      // set SLD style        trans.put( Translation.DEFAULT_KEY, element.getValue() );
457      styledObject.setStyle( style.getGeoObjectStyle() );      //     trans = new Translation( ((List<Element>)element.getChildren()).get(0).getValue() );
458      // set meta data  
459      if ( styledObject        instanceof StyledGridCoverageInterface &&      return trans;
460           (style.getMetaData() instanceof RasterLegendData || style.getMetaData() == null) ) {    }
461        RasterLegendData sourceRld = (RasterLegendData)style.getMetaData();  
462        RasterLegendData destRld = ((StyledGridCoverageInterface)styledObject).getLegendMetaData();    /**
463        if ( destRld != null && sourceRld != null ) {     * Creates an JDOM {@link Element} for the given {@link Translation}.
464          destRld.setPaintGaps(sourceRld.isPaintGaps());     * @param tagname Name of the Element
465          destRld.clear();     * @param translation Translation to store in the Element
466          destRld.putAll( sourceRld );     */
467        }    public final static Element createTranslationElement(String tagname, Translation translation) {
468        return;      Element element = new Element(tagname, AMLURI);
469      }      if ( translation == null )
470      if ( styledObject        instanceof StyledFeatureCollectionInterface &&        throw new UnsupportedOperationException("Translation element can not be created from null!");
471           (style.getMetaData() instanceof Map || style.getMetaData() == null) ) {  
472        Map<Integer, AttributeMetaData> sourceAmd = (Map<Integer, AttributeMetaData>)style.getMetaData();      // If only a default translation is set, the <translation lang="..">..</tranlation>
473        Map<Integer, AttributeMetaData> destAmd   = ((StyledFeatureCollectionInterface)styledObject).getAttributeMetaDataMap();      // part is not used
474        if ( destAmd != null && sourceAmd != null ) {      if (translation.keySet().size() == 1 && translation.get(Translation.DEFAULT_KEY) != null) {
475          destAmd.clear();        element.addContent( translation.get(Translation.DEFAULT_KEY) );
476          destAmd.putAll( sourceAmd );        return element;
477        }      }
478        return;  
479      }      // add a <translation lang="..">..</tranlation> part to the element for
480        // all languages
481      throw new UnsupportedOperationException("Style is not compatible to object: " +      for (String lang : translation.keySet()) {
482                                              (style.getMetaData() == null ? null : style.getMetaData().getClass().getSimpleName()) +        Element translationElement = new Element( ELEM_NAME_TRANSLATION , AMLURI);
483                                              " <-> " +        translationElement.setAttribute("lang", lang);
484                                              (styledObject == null ? null : styledObject.getClass().getSimpleName()));        String translationString = translation.get(lang);
485    }        if (translationString == null)
486           translationString = "";
487    /**        translationElement.addContent( translationString );
488     * Returns the style a {@link StyledMapInterface} as a {@link StyledMapStyle}.        element.addContent(translationElement);
489     * @param styledObject a styled object      }
490     * @return {@code StyledMapStyle<RasterLegendData>} for {@link StyledGridCoverageInterface}  
491     *         or {@code StyledMapStyle<Map<Integer,AttributeMetaData>>} for      return element;
492     *         {@link StyledFeatureCollectionInterface}    }
493     */  
494    public static StyledMapStyle<?> getStyledMapStyle(StyledMapInterface styledObject) {  
495      if ( styledObject instanceof StyledGridCoverageInterface )    /**
496        return getStyledMapStyle( (StyledGridCoverageInterface)styledObject );     * Sets a style to {@link StyledLayerInterface}.
497      if ( styledObject instanceof StyledFeatureCollectionInterface )     * @param styledObject a styled object
498        return getStyledMapStyle( (StyledFeatureCollectionInterface)styledObject );     * @param style a Style
499      throw new UnsupportedOperationException("Unknown type of StyledMapInterface: "+(styledObject == null ? null : styledObject.getClass().getSimpleName()));     */
500    }    public static void setStyledLayerStyle(StyledLayerInterface styledObject, StyledLayerStyle<?> style) {
501        // set SLD style
502    /**      styledObject.setStyle( style.getGeoObjectStyle() );
503     * Returns the style and raster meta data of a {@link StyledGridCoverageInterface}      // set meta data
504     * as a {@link StyledMapStyle}.      if ( styledObject        instanceof StyledGridCoverageInterface &&
505     * @param styledGC a styled grid coverage           (style.getMetaData() instanceof RasterLegendData || style.getMetaData() == null) ) {
506     */        RasterLegendData sourceRld = (RasterLegendData)style.getMetaData();
507    public static StyledMapStyle<RasterLegendData> getStyledMapStyle(StyledGridCoverageInterface styledGC) {        RasterLegendData destRld = ((StyledGridCoverageInterface)styledObject).getLegendMetaData();
508      return new StyledMapStyle<RasterLegendData>(        if ( destRld != null && sourceRld != null ) {
509        styledGC.getStyle(),          destRld.setPaintGaps(sourceRld.isPaintGaps());
510        styledGC.getLegendMetaData()          destRld.clear();
511      );          destRld.putAll( sourceRld );
512    }        }
513          return;
514    /**      }
515     * Returns the style and attribute meta data of a {@link StyledFeatureCollectionInterface}      if ( styledObject        instanceof StyledFeatureCollectionInterface &&
516     * as a {@link StyledMapStyle}.           (style.getMetaData() instanceof Map || style.getMetaData() == null) ) {
517     * @param styledFC a styled feature collection        Map<Integer, AttributeMetaData> sourceAmd = (Map<Integer, AttributeMetaData>)style.getMetaData();
518     */        Map<Integer, AttributeMetaData> destAmd   = ((StyledFeatureCollectionInterface)styledObject).getAttributeMetaDataMap();
519    public static StyledMapStyle<Map<Integer,AttributeMetaData>> getStyledMapStyle(StyledFeatureCollectionInterface styledFC) {        if ( destAmd != null && sourceAmd != null ) {
520      return new StyledMapStyle<Map<Integer,AttributeMetaData>>(          destAmd.clear();
521        styledFC.getStyle(),          destAmd.putAll( sourceAmd );
522        styledFC.getAttributeMetaDataMap()        }
523      );        return;
524    }      }
525    
526    /**      throw new UnsupportedOperationException("Style is not compatible to object: " +
527     * Loads a {@linkplain Style SLD-Style} and {@linkplain RasterLegendData Raster-LegendData}                                              (style.getMetaData() == null ? null : style.getMetaData().getClass().getSimpleName()) +
528     * for a given geo-object (raster) source. The SLD file must be present. A missing                                              " <-> " +
529     * raster legend-data file is tolerated.                                              (styledObject == null ? null : styledObject.getClass().getSimpleName()));
530     * @param geoObjectURL URL of the (already read) raster object    }
531     * @param sldExt file extention for the SLD file  
532     * @param rldExt file extention for the raster legend-data file    /**
533     * @return {@code null} in case of any error     * Returns the style a {@link StyledLayerInterface} as a {@link StyledLayerStyle}.
534     */     * @param styledObject a styled object
535    public static StyledMapStyle<RasterLegendData> loadStyledRasterStyle(URL geoObjectURL, String sldExt, String rldExt) {     * @return {@code StyledLayerStyle<RasterLegendData>} for {@link StyledGridCoverageInterface}
536      RasterLegendData metaData = null;     *         or {@code StyledLayerStyle<Map<Integer,AttributeMetaData>>} for
537      Style sldStyle = null;     *         {@link StyledFeatureCollectionInterface}
538      try {     */
539        Style[] styles = StylingUtil.loadSLD(IOUtil.changeUrlExt(geoObjectURL, sldExt));    public static StyledLayerStyle<?> getStyledLayerStyle(StyledLayerInterface styledObject) {
540        // SLD must be present      if ( styledObject instanceof StyledGridCoverageInterface )
541        if ( styles == null || styles.length == 0 )        return getStyledLayerStyle( (StyledGridCoverageInterface)styledObject );
542          return null;      if ( styledObject instanceof StyledFeatureCollectionInterface )
543        sldStyle = styles[0];        return getStyledLayerStyle( (StyledFeatureCollectionInterface)styledObject );
544      }      throw new UnsupportedOperationException("Unknown type of StyledLayerInterface: "+(styledObject == null ? null : styledObject.getClass().getSimpleName()));
545      catch (Exception err) {    }
546        // SLD must be present  
547        LangUtil.logDebugError(LOGGER,err);    /**
548        return null;     * Returns the style and raster meta data of a {@link StyledGridCoverageInterface}
549      }     * as a {@link StyledLayerStyle}.
550       * @param styledGC a styled grid coverage
551      try {     */
552        metaData = StyledMapUtil.loadRasterLegendData( IOUtil.changeUrlExt(geoObjectURL,rldExt) );    public static StyledLayerStyle<RasterLegendData> getStyledLayerStyle(StyledGridCoverageInterface styledGC) {
553      } catch (FileNotFoundException err) {      return new StyledLayerStyle<RasterLegendData>(
554        // ignore missing raster legend data        styledGC.getStyle(),
555      } catch (Exception err) {        styledGC.getLegendMetaData()
556        // any other error during legend data creation leads to error      );
557        LangUtil.logDebugError(LOGGER,err);    }
558        return null;  
559      }    /**
560      return new StyledMapStyle<RasterLegendData>(sldStyle, metaData);     * Returns the style and attribute meta data of a {@link StyledFeatureCollectionInterface}
561    }     * as a {@link StyledLayerStyle}.
562       * @param styledFC a styled feature collection
563    /**     */
564     * Loads a {@linkplain Style SLD-Style} from a {@code .sld} file and    public static StyledLayerStyle<Map<Integer,AttributeMetaData>> getStyledLayerStyle(StyledFeatureCollectionInterface styledFC) {
565     * {@linkplain RasterLegendData Raster-LegendData} from a {@code .rld} file      return new StyledLayerStyle<Map<Integer,AttributeMetaData>>(
566     * for a given geo-object (raster) source. The SLD file must be present. A missing        styledFC.getStyle(),
567     * raster legend-data file is tolerated.        styledFC.getAttributeMetaDataMap()
568     * @param geoObjectURL URL of the (already read) raster object      );
569     * @param sldExt file extention for the SLD file    }
570     * @param rldExt file extention for the raster legend-data file  
571     * @return {@code null} in case of any error    /**
572     */     * Loads a {@linkplain Style SLD-Style} and {@linkplain RasterLegendData Raster-LegendData}
573    public static StyledMapStyle<RasterLegendData> loadStyledRasterStyle(URL geoObjectURL) {     * for a given geo-object (raster) source. The SLD file must be present. A missing
574      return loadStyledRasterStyle(geoObjectURL, "sld", "rld");     * raster legend-data file is tolerated.
575    }     * @param geoObjectURL URL of the (already read) raster object
576       * @param sldExt file extention for the SLD file
577    /**     * @param rldExt file extention for the raster legend-data file
578     * Loads a {@linkplain Style SLD-Style} and a {@linkplain AttributeMetaData AttributeMetaData-Map}     * @return {@code null} in case of any error
579     * for a given geo-object (feature) source. The SLD file must be present. A missing     */
580     * attribute meta-data file is tolerated.    public static StyledLayerStyle<RasterLegendData> loadStyledRasterStyle(URL geoObjectURL, String sldExt, String rldExt) {
581     * @param geoObjectURL URL of the (already read) feature object      RasterLegendData metaData = null;
582     * @param sldExt file extention for the SLD file      Style sldStyle = null;
583     * @param rldExt file extention for the raster legend-data file      try {
584     * @return {@code null} in case of any error        Style[] styles = StylingUtil.loadSLD(IOUtil.changeUrlExt(geoObjectURL, sldExt));
585     */        // SLD must be present
586    public static StyledMapStyle<Map<Integer,AttributeMetaData>> loadStyledFeatureStyle(URL geoObjectURL, String sldExt, String rldExt) {        if ( styles == null || styles.length == 0 )
587      Map<Integer,AttributeMetaData> metaData = null;          return null;
588      Style                          sldStyle = null;        sldStyle = styles[0];
589      try {      }
590        Style[] styles = StylingUtil.loadSLD(IOUtil.changeUrlExt(geoObjectURL, sldExt));      catch (Exception err) {
591        // SLD must be present        // SLD must be present
592        if ( styles == null || styles.length == 0 )        LangUtil.logDebugError(LOGGER,err);
593          return null;        return null;
594        sldStyle = styles[0];      }
595      } catch (Exception err) {  
596        // SLD must be present      try {
597        LangUtil.logDebugError(LOGGER,err);        metaData = StyledLayerUtil.loadRasterLegendData( IOUtil.changeUrlExt(geoObjectURL,rldExt) );
598        return null;      } catch (FileNotFoundException err) {
599      }        // ignore missing raster legend data
600        } catch (Exception err) {
601      try {        // any other error during legend data creation leads to error
602        metaData = StyledMapUtil.loadAttributeMetaDataMap( IOUtil.changeUrlExt(geoObjectURL,rldExt) );        LangUtil.logDebugError(LOGGER,err);
603      } catch (FileNotFoundException err) {        return null;
604        // ignore missing attribute meta data      }
605      } catch (Exception err) {      return new StyledLayerStyle<RasterLegendData>(sldStyle, metaData);
606        // any other error during meta data creation leads to error    }
607        LangUtil.logDebugError(LOGGER,err);  
608        return null;    /**
609      }     * Loads a {@linkplain Style SLD-Style} from a {@code .sld} file and
610       * {@linkplain RasterLegendData Raster-LegendData} from a {@code .rld} file
611      return new StyledMapStyle<Map<Integer,AttributeMetaData>>(sldStyle, metaData);     * for a given geo-object (raster) source. The SLD file must be present. A missing
612    }     * raster legend-data file is tolerated.
613       * @param geoObjectURL URL of the (already read) raster object
614    /**     * @param sldExt file extention for the SLD file
615     * Loads a {@linkplain Style SLD-Style} from a {@code .sld} file and     * @param rldExt file extention for the raster legend-data file
616     * {@linkplain AttributeMetaData AttributeMetaData-Map} from a {@code .amd} file     * @return {@code null} in case of any error
617     * for a given geo-object (feature) source. The SLD file must be present. A missing     */
618     * attribute meta-data file is tolerated.    public static StyledLayerStyle<RasterLegendData> loadStyledRasterStyle(URL geoObjectURL) {
619     * @param geoObjectURL URL of the (already read) feature object      return loadStyledRasterStyle(geoObjectURL, "sld", "rld");
620     * @param sldExt file extention for the SLD file    }
621     * @param rldExt file extention for the raster legend-data file  
622     * @return {@code null} in case of any error    /**
623     */     * Loads a {@linkplain Style SLD-Style} and a {@linkplain AttributeMetaData AttributeMetaData-Map}
624    public static StyledMapStyle<Map<Integer,AttributeMetaData>> loadStyledFeatureStyle(URL geoObjectURL) {     * for a given geo-object (feature) source. The SLD file must be present. A missing
625      return loadStyledFeatureStyle(geoObjectURL, "sld", "amd");     * attribute meta-data file is tolerated.
626    }     * @param geoObjectURL URL of the (already read) feature object
627       * @param sldExt file extention for the SLD file
628    /**     * @param rldExt file extention for the raster legend-data file
629     * Stores a {@linkplain Style SLD-Style} and {@linkplain RasterLegendData Raster-LegendData}     * @return {@code null} in case of any error
630     * for a given geo-object (raster) source.     */
631     * @param style  style to save    public static StyledLayerStyle<Map<Integer,AttributeMetaData>> loadStyledFeatureStyle(URL geoObjectURL, String sldExt, String rldExt) {
632     * @param geoObjectURL URL of the raster object      Map<Integer,AttributeMetaData> metaData = null;
633     * @param sldExt file extention for the SLD file      Style                          sldStyle = null;
634     * @param mdExt file extention for the meta-data file      try {
635     */        Style[] styles = StylingUtil.loadSLD(IOUtil.changeUrlExt(geoObjectURL, sldExt));
636    public static <T> void saveStyledMapStyle(StyledMapStyle<T> style, URL geoObjectURL, String sldExt, String mdExt) throws Exception {        // SLD must be present
637      // Store the SLD        if ( styles == null || styles.length == 0 )
638      Style sldStyle = style.getGeoObjectStyle();          return null;
639      if ( sldStyle != null ) {        sldStyle = styles[0];
640        StylingUtil.saveStyleToSLD(      } catch (Exception err) {
641           sldStyle,        // SLD must be present
642           IOUtil.changeFileExt(        LangUtil.logDebugError(LOGGER,err);
643                new File(geoObjectURL.toURI()),        return null;
644                sldExt      }
645           )  
646        );      try {
647      }        metaData = StyledLayerUtil.loadAttributeMetaDataMap( IOUtil.changeUrlExt(geoObjectURL,rldExt) );
648        } catch (FileNotFoundException err) {
649      // Store the meta data        // ignore missing attribute meta data
650      T metaData = style.getMetaData();      } catch (Exception err) {
651      if ( metaData != null ) {        // any other error during meta data creation leads to error
652        if ( metaData instanceof RasterLegendData ) {        LangUtil.logDebugError(LOGGER,err);
653          saveRasterLegendData(        return null;
654              (RasterLegendData)metaData,      }
655              IOUtil.changeUrlExt(geoObjectURL,mdExt)  
656          );      return new StyledLayerStyle<Map<Integer,AttributeMetaData>>(sldStyle, metaData);
657  //      } else if ( metaData instanceof Map<Integer,AttributeMetaData> ) { // LEIDER NICHT KOMPILIERBAR!!    }
658        } else if ( metaData instanceof Map ) {  
659          saveAttributeMetaDataMap(    /**
660              (Map<Integer,AttributeMetaData>)metaData,     * Loads a {@linkplain Style SLD-Style} from a {@code .sld} file and
661              IOUtil.changeUrlExt(geoObjectURL,mdExt)     * {@linkplain AttributeMetaData AttributeMetaData-Map} from a {@code .amd} file
662          );     * for a given geo-object (feature) source. The SLD file must be present. A missing
663        } else     * attribute meta-data file is tolerated.
664          throw new UnsupportedOperationException("Export for meta data not yet supported: "+metaData.getClass().getSimpleName());     * @param geoObjectURL URL of the (already read) feature object
665      }     * @param sldExt file extention for the SLD file
666    }     * @param rldExt file extention for the raster legend-data file
667       * @return {@code null} in case of any error
668    /**     */
669     * Stores the {@linkplain Style SLD-Style} to a {@code .sld} file and    public static StyledLayerStyle<Map<Integer,AttributeMetaData>> loadStyledFeatureStyle(URL geoObjectURL) {
670     * the meta data ({@link RasterLegendData} or {@link AttributeMetaData})      return loadStyledFeatureStyle(geoObjectURL, "sld", "amd");
671     * to a {@code .rld} or {@code .amd} file.    }
672     * for a given geo-object source.  
673     * @param style  style to save    /**
674     * @param geoObjectURL URL of the (already read) raster object     * Stores a {@linkplain Style SLD-Style} and {@linkplain RasterLegendData Raster-LegendData}
675     */     * for a given geo-object (raster) source.
676    public static void saveStyledMapStyle(StyledMapStyle<?> style, URL geoObjectURL) throws Exception {     * @param style  style to save
677      if ( style.getMetaData() instanceof RasterLegendData )     * @param geoObjectURL URL of the raster object
678        saveStyledMapStyle(style,geoObjectURL, "sld", "rld");     * @param sldExt file extention for the SLD file
679      else     * @param mdExt file extention for the meta-data file
680        saveStyledMapStyle(style,geoObjectURL, "sld", "amd");     */
681    }    public static <T> void saveStyledLayerStyle(StyledLayerStyle<T> style, URL geoObjectURL, String sldExt, String mdExt) throws Exception {
682        // Store the SLD
683  }      Style sldStyle = style.getGeoObjectStyle();
684        if ( sldStyle != null ) {
685          StylingUtil.saveStyleToSLD(
686             sldStyle,
687             IOUtil.changeFileExt(
688                  new File(geoObjectURL.toURI()),
689                  sldExt
690             )
691          );
692        }
693    
694        // Store the meta data
695        T metaData = style.getMetaData();
696        if ( metaData != null ) {
697          if ( metaData instanceof RasterLegendData ) {
698            saveRasterLegendData(
699                (RasterLegendData)metaData,
700                IOUtil.changeUrlExt(geoObjectURL,mdExt)
701            );
702    //      } else if ( metaData instanceof Map<Integer,AttributeMetaData> ) { // LEIDER NICHT KOMPILIERBAR!!
703          } else if ( metaData instanceof Map ) {
704            saveAttributeMetaDataMap(
705                (Map<Integer,AttributeMetaData>)metaData,
706                IOUtil.changeUrlExt(geoObjectURL,mdExt)
707            );
708          } else
709            throw new UnsupportedOperationException("Export for meta data not yet supported: "+metaData.getClass().getSimpleName());
710        }
711      }
712    
713      /**
714       * Stores the {@linkplain Style SLD-Style} to a {@code .sld} file and
715       * the meta data ({@link RasterLegendData} or {@link AttributeMetaData})
716       * to a {@code .rld} or {@code .amd} file.
717       * for a given geo-object source.
718       * @param style  style to save
719       * @param geoObjectURL URL of the (already read) raster object
720       */
721      public static void saveStyledLayerStyle(StyledLayerStyle<?> style, URL geoObjectURL) throws Exception {
722        if ( style.getMetaData() instanceof RasterLegendData )
723          saveStyledLayerStyle(style,geoObjectURL, "sld", "rld");
724        else
725          saveStyledLayerStyle(style,geoObjectURL, "sld", "amd");
726      }
727    
728    }

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