/[schmitzm]/trunk/src/skrueger/geotools/StyledFeatureCollectionTableModel.java
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revision 46 by mojays, Fri Apr 17 11:44:05 2009 UTC revision 62 by alfonx, Fri Apr 17 18:56:17 2009 UTC
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1    /** SCHMITZM - This file is part of the java library of Martin O.J. Schmitz (SCHMITZM)
2    
3        This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
4        This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
5        You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
6    
7        Diese Bibliothek ist freie Software; Sie dürfen sie unter den Bedingungen der GNU Lesser General Public License, wie von der Free Software Foundation veröffentlicht, weiterverteilen und/oder modifizieren; entweder gemäß Version 2.1 der Lizenz oder (nach Ihrer Option) jeder späteren Version.
8        Diese Bibliothek wird in der Hoffnung weiterverbreitet, daß sie nützlich sein wird, jedoch OHNE IRGENDEINE GARANTIE, auch ohne die implizierte Garantie der MARKTREIFE oder der VERWENDBARKEIT FÜR EINEN BESTIMMTEN ZWECK. Mehr Details finden Sie in der GNU Lesser General Public License.
9        Sie sollten eine Kopie der GNU Lesser General Public License zusammen mit dieser Bibliothek erhalten haben; falls nicht, schreiben Sie an die Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA.
10     **/
11  package skrueger.geotools;  package skrueger.geotools;
12    
13    import java.util.Iterator;
14    import java.util.Map;
15    import java.util.TreeMap;
16    import java.util.Vector;
17    
18    import org.geotools.data.DefaultQuery;
19    import org.geotools.data.FeatureSource;
20    import org.geotools.data.Query;
21    import org.geotools.data.memory.MemoryDataStore;
22    import org.geotools.feature.FeatureCollection;
23    import org.opengis.filter.Filter;
24    
25    import com.vividsolutions.jts.geom.Envelope;
26    
27  import schmitzm.geotools.gui.FeatureCollectionTableModel;  import schmitzm.geotools.gui.FeatureCollectionTableModel;
28    import skrueger.AttributeMetaData;
29    import skrueger.i8n.I8NUtil;
30    import skrueger.i8n.Translation;
31    
32    /**
33     * This class extends the the {@link FeatureCollectionTableModel} with the
34     * functionalities of the {@link AttributeMetaData} of
35     * {@linkplain StyledMapInterface styled objects}.
36     * <ul>
37     *   <li>column names are translated according to {@link AttributeMetaData#getTitle()}</li>
38     *   <li>columns are hidden according to {@link AttributeMetaData#isVisible()()}</li>
39     * </ul>
40     * @author <a href="mailto:[email protected]">Martin Schmitz</a> (University of Bonn/Germany)
41     */
42  public class StyledFeatureCollectionTableModel extends FeatureCollectionTableModel {  public class StyledFeatureCollectionTableModel extends FeatureCollectionTableModel {
43        /** Holds the data source as styled map. */
44      protected StyledMapInterface map = null;
45      /** Contains only the visible elements of the {@link AttributeMetaData}-Map */
46      protected Map<Integer, AttributeMetaData> visibleAMD = null;
47      /** Holds the data source for the table as {@code FeatureSource}. */
48      protected FeatureSource featureSource = null;
49      /** Contains the complete {@link AttributeMetaData}-Map of the styled layer. */
50      protected Map<Integer, AttributeMetaData> origAMD = null;
51      /** Holds the current filter on the table */
52      protected Filter filter = null;
53      /** Holds the Bounds for all features. Only set once during the constructor **/
54      protected Envelope bounds;
55    
56      /**
57       * Creates a new table model for a styled map.
58       * @param map the styled map
59       */
60    public StyledFeatureCollectionTableModel(StyledFeatureCollectionInterface map) {    public StyledFeatureCollectionTableModel(StyledFeatureCollectionInterface map) {
61      super(null);      this(map,Filter.INCLUDE);
62    }    }
63      
64      /**
65       * Creates a new table model for a styled map.
66       * @param map the styled map
67       * @param filter filter applied to the table
68       */
69      public StyledFeatureCollectionTableModel(StyledFeatureCollectionInterface map, Filter filter) {
70        super();
71        setFeatureCollection(map, filter);
72      }
73    
74      /**
75       * Creates a new table model for a styled map.
76       * @param map the styled map
77       */
78    public StyledFeatureCollectionTableModel(StyledFeatureSourceInterface map) {    public StyledFeatureCollectionTableModel(StyledFeatureSourceInterface map) {
79      super(null);      this(map,Filter.INCLUDE);
80    }    }
81    
82    public String[] createColumnNames() {    /**
83      return new String[0];     * Creates a new table model for a styled map.
84       * @param map the styled map
85       * @param filter filter applied to the table
86       */
87      public StyledFeatureCollectionTableModel(StyledFeatureSourceInterface map, Filter filter) {
88        super();
89        setFeatureCollection(map, filter);
90      }
91    
92      /**
93       * Sets a new data source for the table.
94       * @param fs     the feature source
95       * @param amd    {@link AttributeMetaData}-Map to define the visible attributes
96       *               and translation
97       */
98      protected void setFeatureSource(FeatureSource fs, Map<Integer, AttributeMetaData> amd, Filter filter) throws Exception {
99        if ( filter == null )
100          filter = Filter.INCLUDE;
101        
102        this.featureSource = fs;
103        this.filter        = filter;
104        this.origAMD       = amd;
105        this.visibleAMD    = null;
106        
107        FeatureCollection fc = null;
108        if (fs != null) {
109            
110           bounds = fs.getBounds();
111            
112          Query query = new DefaultQuery(fs.getSchema().getTypeName(), filter);
113          if (amd != null) {
114            // determine the names of the visible Attributes
115            this.visibleAMD = StyledMapUtil.getVisibleAttributeMetaData(amd, true);
116            Vector<String> visibleAttrNames = new Vector<String>();
117            // Add the column with the geometry (usually "the_geom")
118            visibleAttrNames.add(fs.getSchema().getDefaultGeometry().getLocalName());
119            for (int attrIdx : visibleAMD.keySet())
120              visibleAttrNames.add(fs.getSchema().getAttributeType(attrIdx).getLocalName());
121    
122            // create a query for the visible attributes
123            String[] properties = visibleAttrNames.toArray(new String[0]);
124            
125            query = new DefaultQuery(fs.getSchema().getTypeName(), filter, properties);
126          }
127          fc = fs.getFeatures(query);
128    
129    // FAILS:!!!, even with  query = new DefaultQuery(fs.getSchema().getTypeName(), filter);
130                            // java.lang.UnsupportedOperationException: Unknown feature
131                            // attribute: PQM_MOD
132                            // at
133                            // schmitzm.geotools.feature.FeatureOperationTree.evaluate(FeatureOperationTree.java:93)
134                            // bounds = fc.getBounds();
135                            // SK, 17.4.2009
136                            //      
137                            // System.out.println("Filter = "+filter);
138                            // System.out.println("Size of FC = "+fc.size());
139                            // System.out.println("anz att= "+fc.getNumberOfAttributes());
140        }
141        setFeatureCollection(fc);
142      }
143    
144      /**
145       * Converts the {@code StyledFeatureCollection} to a {@code FeatureSource}
146       * and sets this as the new data source for the table.
147       * @param fs     the feature source
148       * @param amd    {@link AttributeMetaData}-Map to define the visible attributes
149       *               and translation
150       */
151      public void setFeatureCollection(StyledFeatureCollectionInterface map, Filter filter) {
152        this.map = map;
153        try {
154          if (map == null)
155            setFeatureSource(null, null, null);
156          else {
157            FeatureCollection fc = map.getGeoObject();
158            String fcName = fc.getFeatureType().getTypeName();
159            FeatureSource fs = new MemoryDataStore(fc).getFeatureSource(fcName);
160            setFeatureSource(fs, map.getAttributeMetaDataMap(), filter);
161          }
162        } catch (Exception err) {
163          throw new RuntimeException(err);
164        }
165      }
166    
167      /**
168       * Sets the {@code StyledFeatureCollection} as new data source for the table.
169       * @param fs     the feature source
170       * @param amd    {@link AttributeMetaData}-Map to define the visible attributes
171       *               and translation
172       */
173      public void setFeatureCollection(StyledFeatureSourceInterface map, Filter filter) {
174        this.map = map;
175        try {
176          if (map == null)
177            setFeatureSource(null, null, null);
178          else
179            setFeatureSource(map.getGeoObject(), map.getAttributeMetaDataMap(), filter);
180        } catch (Exception err) {
181          throw new RuntimeException(err);
182        }
183    }    }
184        
185    public int getRowCount() {    /**
186      return 0;     * Resets the filter for the table.
187       * @param filter a filter
188       */
189      public void setFilter(Filter filter) {
190        try{
191          setFeatureSource(this.featureSource, this.origAMD, filter);
192        } catch (Exception err) {
193          throw new RuntimeException(err);
194        }
195    }    }
196        
197    public Object getValueAt(int row, int col) {    /**
198      return "";     * @return <code>Filter.INCLUDE</code> or the {@link Filter} applied to the Features
199       */
200      public Filter getFilter() {
201              return this.filter;
202    }    }
203    
204      /**
205       * After calling {@code super.reorganize(.)} this method replaced the
206       * column descriptions with the titles of the {@code AttributeMetaData}.
207       * @param fireTableStructureChanged indicates whether a table event is
208       *        initiated after reorganize
209       */
210      @Override
211      protected void reorganize(boolean fireTableStructureChanged) {
212        super.reorganize(false);
213        // translate the column names
214        if (visibleAMD != null) {
215          Iterator<Integer> keys = visibleAMD.keySet().iterator();
216          for (int i = 0; i < colNames.length && keys.hasNext(); i++) {
217            Translation title = visibleAMD.get(keys.next()).getTitle();
218            if (!I8NUtil.isEmpty(title)) {
219    //          System.out.println("set colname " + i + " to " + title.toString());
220              colNames[i] = title.toString();
221            }
222          }
223        }
224        if ( fireTableStructureChanged )
225          fireTableStructureChanged();
226      }
227    
228      /**
229             * @returns Cached bounds for the whole dataset (without applying the
230             *          filter) or <code>null</code>
231             */
232            public Envelope getBounds() {
233                    return bounds;
234            }
235  }  }
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