/[schmitzm]/trunk/src/skrueger/geotools/StyledFeatureCollectionTableModel.java
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trunk/src/skrueger/geotools/StyledFeatureCollectionTableModel.java revision 47 by mojays, Fri Apr 17 12:28:50 2009 UTC branches/1.0-gt2-2.6/src/skrueger/geotools/StyledFeatureCollectionTableModel.java revision 464 by alfonx, Tue Oct 13 13:22:31 2009 UTC
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1  /** SCHMITZM - This file is part of the java library of Martin O.J. Schmitz (SCHMITZM)  /*******************************************************************************
2     * Copyright (c) 2009 Martin O. J. Schmitz.
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.   * This file is part of the SCHMITZM library - a collection of utility
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   * classes based on Java 1.6, focusing (not only) on Java Swing
6     * and the Geotools library.
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.   * The SCHMITZM project is hosted at:
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.   * http://wald.intevation.org/projects/schmitzm/
10   **/   *
11  package skrueger.geotools;   * This program is free software; you can redistribute it and/or
12     * modify it under the terms of the GNU Lesser General Public License
13  import schmitzm.geotools.gui.FeatureCollectionTableModel;   * as published by the Free Software Foundation; either version 3
14     * of the License, or (at your option) any later version.
15  public class StyledFeatureCollectionTableModel extends FeatureCollectionTableModel {   *
16       * This program is distributed in the hope that it will be useful,
17    public StyledFeatureCollectionTableModel(StyledFeatureCollectionInterface map) {   * but WITHOUT ANY WARRANTY; without even the implied warranty of
18      super(null);   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19    }   * GNU General Public License for more details.
20       *
21    public StyledFeatureCollectionTableModel(StyledFeatureSourceInterface map) {   * You should have received a copy of the GNU Lesser General Public License (license.txt)
22      super(null);   * along with this program; if not, write to the Free Software
23    }   * 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    public String[] createColumnNames() {   *
26      return new String[0];   * Contributors:
27    }   *     Martin O. J. Schmitz - initial API and implementation
28       *     Stefan A. Krüger - additional utility classes
29    public int getRowCount() {   ******************************************************************************/
30      return 0;  package skrueger.geotools;
31    }  
32      import java.util.Vector;
33    public Object getValueAt(int row, int col) {  
34      return "";  import org.apache.log4j.Logger;
35    }  import org.geotools.data.DefaultQuery;
36  }  import org.geotools.data.FeatureSource;
37    import org.geotools.data.Query;
38    import org.geotools.feature.FeatureCollection;
39    import org.opengis.feature.simple.SimpleFeature;
40    import org.opengis.feature.simple.SimpleFeatureType;
41    import org.opengis.feature.type.AttributeDescriptor;
42    import org.opengis.filter.Filter;
43    
44    import schmitzm.geotools.gui.FeatureCollectionTableModel;
45    import skrueger.AttributeMetadata;
46    
47    import com.vividsolutions.jts.geom.Envelope;
48    
49    /**
50     * This class extends the the {@link FeatureCollectionTableModel} with the
51     * functionalities of the {@link AttributeMetadata}.
52     * <ul>
53     * <li>column names are translated according to
54     * {@link AttributeMetadata#getTitle()}</li>
55     * <li>columns are hidden according to {@link AttributeMetaData#isVisible()()}</li>
56     * <li>Any filter defined in the {@link StyledFeaturesInterface} will be applied.</li>
57     * </ul>
58     *
59     * @author Stefan A. Krüger
60     */
61    public class StyledFeatureCollectionTableModel extends
62                    FeatureCollectionTableModel {
63            final static private Logger LOGGER = Logger
64                            .getLogger(StyledFeatureCollectionTableModel.class);
65            /** Contains the complete {@link AttributeMetadata}-Map of the styled layer. */
66            protected AttributeMetadataMap origAMD = null;
67            /** Holds the current filter on the table */
68            protected Filter filter = null;
69            /** Holds the Bounds for all features. Only set once during the constructor **/
70            protected Envelope bounds;
71    
72            
73            /**
74             * Creates a new table model for a styled layer.
75             *
76             * @param styledFeatures
77             *            the styled layer
78             * @param filter
79             *            filter applied to the table
80             */
81            public StyledFeatureCollectionTableModel(StyledFeaturesInterface<?> styledFeatures) {
82                    setStyledFeatures(styledFeatures);
83            }
84    
85            /**
86             * Sets a new data source for the table.
87             *
88             * @param fs
89             *            the feature source
90             * @param amd
91             *            {@link AttributeMetadata}-Map to define the visible attributes
92             *            and translation
93             */
94            protected void setFeatureSource(FeatureSource<SimpleFeatureType, SimpleFeature> fs,
95                            AttributeMetadataMap amd, Filter filter)
96                            throws Exception {
97                    
98                    if (filter == null)
99                            filter = Filter.INCLUDE;
100    
101    //              this.featureSource = fs;
102                    this.filter = filter;
103                    this.origAMD = amd;
104    
105                    FeatureCollection<SimpleFeatureType, SimpleFeature> fc = null;
106                    if (fs != null) {
107    
108                            bounds = fs.getBounds();
109    
110                            final SimpleFeatureType schema = fs.getSchema();
111                            Query query = new DefaultQuery(schema.getTypeName(), filter);
112                            if (amd != null) {
113                                    Vector<String> visibleAttrNames = new Vector<String>();
114                                    // Add the column with the geometry (usually "the_geom")
115                                    
116                                    for (AttributeDescriptor aDesc : schema.getAttributeDescriptors()) {
117                                            
118                                            // Always add the geometry
119                                            if (schema.getGeometryDescriptor()
120                                                    .getName().equals(aDesc.getName())) {
121                                                    visibleAttrNames.add(schema.getGeometryDescriptor()
122                                                                    .getLocalName());
123                                                    continue;
124                                            }
125                                            
126                                            if (amd.get(aDesc.getName()).isVisible())
127                                                    visibleAttrNames.add(aDesc.getName().getLocalPart());
128                                    }
129    
130                                    // create a query for the visible attributes
131                                    String[] properties = visibleAttrNames.toArray(new String[] {});
132    
133                                    LOGGER.debug("Query contains the following attributes: "
134                                                    + visibleAttrNames);
135    
136                                    query = new DefaultQuery(schema.getTypeName(), filter,
137                                                    properties);
138                            }
139                            fc = fs.getFeatures(query);
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             *
148             * @param fs
149             *            the feature source
150             * @param amd
151             *            {@link AttributeMetadata}-Map to define the visible attributes
152             *            and translation
153             */
154            public void setStyledFeatures(StyledFeaturesInterface<?> styledFeatures) {
155                    try {
156                            if (styledFeatures == null)
157                                    setFeatureSource(null, null, null);
158                            else {
159                                    setFeatureSource(styledFeatures.getFeatureSource(), styledFeatures.getAttributeMetaDataMap(), styledFeatures.getFilter());
160                            }
161                    } catch (Exception err) {
162                            throw new RuntimeException(err);
163                    }
164            }
165    
166            /**
167             * After calling {@code super.reorganize(.)} this method replaced the column
168             * descriptions with the titles of the {@code AttributeMetaData}.
169             *
170             * @param fireTableStructureChanged
171             *            indicates whether a table event is initiated after reorganize
172             */
173            @Override
174            protected void reorganize(boolean fireTableStructureChanged) {
175                    
176                    super.reorganize(false);
177                    
178                    // translate the column names
179                    if (origAMD != null) {
180                            for (int i = 0; i < colNames.length; i++) {
181                                    colNames[i] = origAMD.get(colNames[i]).getTitle().toString();
182                            }
183                            
184                    }
185                    if (fireTableStructureChanged)
186                            fireTableStructureChanged();
187            }
188    
189            /**
190             * @return Cached bounds for the whole dataset (without applying the filter)
191             *         or <code>null</code>
192             */
193            public Envelope getBounds() {
194                    return bounds;
195            }
196    }

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