skrueger/geotools/StyledFeatureCollection.java

/*******************************************************************************
 * Copyright (c) 2009 Martin O. J. Schmitz.
 * 
 * This file is part of the SCHMITZM library - a collection of utility 
 * classes based on Java 1.6, focusing (not only) on Java Swing 
 * and the Geotools library.
 * 
 * The SCHMITZM project is hosted at:
 * http://wald.intevation.org/projects/schmitzm/
 * 
 * This program 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 3
 * of the License, or (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License (license.txt)
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 * or try this link: http://www.gnu.org/licenses/lgpl.html
 * 
 * Contributors:
 *     Martin O. J. Schmitz - initial API and implementation
 *     Stefan A. Tzeggai - additional utility classes
 ******************************************************************************/
package skrueger.geotools;

import java.io.IOException;
import java.net.URL;

import javax.swing.ImageIcon;

import org.geotools.data.FeatureSource;
import org.geotools.data.collection.CollectionDataStore;
import org.geotools.data.store.EmptyFeatureCollection;
import org.geotools.feature.FeatureCollection;
import org.geotools.feature.NameImpl;
import org.geotools.feature.collection.SubFeatureCollection;
import org.geotools.styling.Style;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import org.opengis.feature.type.AttributeDescriptor;
import org.opengis.filter.Filter;

import schmitzm.geotools.feature.FeatureUtil;
import skrueger.AttributeMetadataImpl;
import skrueger.i8n.Translation;

/**
 * This class provides a simple implementation of {@link StyledLayerInterface}
 * for {@link FeatureCollection}. The uncache functionality is not supported,
 * because this class bases on an existing {@link FeatureCollection} object in
 * memory.
 * 
 * @author <a href="mailto:[email protected]">Martin Schmitz</a>
 *         (University of Bonn/Germany)
 * @version 1.0
 */
public class StyledFeatureCollection
                extends
                AbstractStyledLayer<FeatureCollection<SimpleFeatureType, SimpleFeature>>
                implements StyledFeatureCollectionInterface {

        /** Holds the meta data for displaying a legend. */
        protected AttributeMetadataMap<AttributeMetadataImpl> attrMetaData = null;

        /**
         * We be filled with a "virtual" {@link FeatureSource} on demand.
         */
        private FeatureSource<SimpleFeatureType, SimpleFeature> featureSource = null;

        /**
         * A Filter that will be applied internally applied to this
         * FeatureCollection
         **/
        private Filter filter = Filter.INCLUDE;

        /**
         * Creates a styled {@link FeatureCollection} with language-specific
         * informations.
         * 
         * @param fc
         *            the {@link FeatureCollection}
         * @param id
         *            a unique ID for the object
         * @param title
         *            a (language-specific) short description
         * @param desc
         *            a (language-specific) long description
         * @param keywords
         *            (language-specific) keywords for the geo objects
         * @param style
         *            a display style (if {@code null}, a default style is created)
         * @param attrMetaData
         *            meta data for displaying a legend
         * @param icon
         *            an icon for the object (can be {@code null})
         * @exception IllegalArgumentException
         *                if {@code null} is given as ID or geo object
         */
        public StyledFeatureCollection(
                        FeatureCollection<SimpleFeatureType, SimpleFeature> fc, String id,
                        Translation title, Translation desc, Translation keywords,
                        Style style, AttributeMetadataMap attrMetaData, ImageIcon icon) {
                super(fc, fc.getBounds(), fc.getSchema().getGeometryDescriptor()
                                .getCoordinateReferenceSystem(), id, title, desc, keywords,
                                style, icon);
                setAttributeMetaData(attrMetaData);
        }

        /**
         * Creates a styled {@link FeatureCollection} with language-specific
         * informations.
         * 
         * @param fc
         *            the {@link FeatureCollection}
         * @param id
         *            a unique ID for the object
         * @param title
         *            a (language-specific) short description
         * @param desc
         *            a (language-specific) long description
         * @param keywords
         *            (language-specific) keywords for the geo objects
         * @param style
         *            a display style with attribute meta data information
         * @param icon
         *            an icon for the object (can be {@code null})
         * @exception IllegalArgumentException
         *                if {@code null} is given as ID or geo object
         */
        public StyledFeatureCollection(
                        FeatureCollection<SimpleFeatureType, SimpleFeature> fc, String id,
                        Translation title, Translation desc, Translation keywords,
                        StyledLayerStyle<AttributeMetadataMap> style, ImageIcon icon) {
                super(fc, fc.getBounds(), fc.getSchema().getGeometryDescriptor()
                                .getCoordinateReferenceSystem(), id, title, desc, keywords,
                                style != null ? style.getGeoObjectStyle() : null, icon);
                setAttributeMetaData(style != null ? style.getMetaData() : null);
        }

        /**
         * Creates a styled {@link FeatureCollection} with a language-specific
         * title, no long description, no keywords, default attribute meta data and
         * no icon.
         * 
         * @param fc
         *            the {@link FeatureCollection}
         * @param id
         *            a unique ID for the object
         * @param title
         *            a short description
         * @param style
         *            a display style (if {@code null}, a default style is created)
         * @exception IllegalArgumentException
         *                if {@code null} is given as ID or geo object
         * @see #createDefaultAttributeMetaDataMap(FeatureCollection)
         */
        public StyledFeatureCollection(
                        FeatureCollection<SimpleFeatureType, SimpleFeature> fc, String id,
                        Translation title, Style style) {
                this(fc, id, title, null, null, style, null, null);
        }

        /**
         * Creates a styled {@link FeatureCollection} with non-translated
         * informations.
         * 
         * @param fc
         *            the {@link FeatureCollection}
         * @param id
         *            a unique ID for the object
         * @param title
         *            a short description
         * @param desc
         *            a long description
         * @param keywords
         *            keywords for the geo objects
         * @param style
         *            a display style (if {@code null}, a default style is created)
         * @param attrMetaData
         *            meta data for displaying a legend
         * @param icon
         *            an icon for the object (can be {@code null})
         * @exception IllegalArgumentException
         *                if {@code null} is given as ID or geo object
         */
        public StyledFeatureCollection(
                        FeatureCollection<SimpleFeatureType, SimpleFeature> fc, String id,
                        String title, String desc, String keywords, Style style,
                        AttributeMetadataMap attrMetaData, ImageIcon icon) {
                this(fc, id, (Translation) null, null, null, style, attrMetaData, icon);
                setTitle(title);
                setDesc(desc);
                setKeywords(keywords);
        }

        /**
         * Creates a styled {@link FeatureCollection} with non-translated
         * informations.
         * 
         * @param fc
         *            the {@link FeatureCollection}
         * @param id
         *            a unique ID for the object
         * @param title
         *            a short description
         * @param desc
         *            a long description
         * @param keywords
         *            keywords for the geo objects
         * @param style
         *            a display style with attribute meta data information
         * @param icon
         *            an icon for the object (can be {@code null})
         * @exception IllegalArgumentException
         *                if {@code null} is given as ID or geo object
         */
        public StyledFeatureCollection(
                        FeatureCollection<SimpleFeatureType, SimpleFeature> fc, String id,
                        String title, String desc, String keywords,
                        StyledLayerStyle<AttributeMetadataMap> style, ImageIcon icon) {
                this(fc, id, title, desc, keywords, style != null ? style
                                .getGeoObjectStyle() : null, style != null ? style
                                .getMetaData() : null, icon);
        }

        /**
         * Creates a styled {@link FeatureCollection} with a non-translated title,
         * no long description, no keywords, default attribute meta data and no
         * icon.
         * 
         * @param fc
         *            the {@link FeatureCollection}
         * @param id
         *            a unique ID for the object
         * @param title
         *            a short description
         * @param style
         *            a display style (if {@code null}, a default style is created)
         * @exception IllegalArgumentException
         *                if {@code null} is given as ID or geo object
         * @see #createDefaultAttributeMetaDataMap(FeatureCollection)
         */
        public StyledFeatureCollection(
                        FeatureCollection<SimpleFeatureType, SimpleFeature> fc, String id,
                        String title, Style style) {
                this(fc, id, title, null, null, style, null, null);
        }

        /**
         * Creates a styled {@link FeatureCollection} with a non-translated title,
         * no long description, no keywords, default attribute meta data and no
         * icon.
         * 
         * @param fc
         *            the {@link FeatureCollection}
         * @param id
         *            a unique ID for the object
         * @param title
         *            a short description
         * @param style
         *            a display style (if {@code null}, a default style is created)
         * @exception IllegalArgumentException
         *                if {@code null} is given as ID or geo object
         * @see #createDefaultAttributeMetaDataMap(FeatureCollection)
         */
        public StyledFeatureCollection(
                        FeatureCollection<SimpleFeatureType, SimpleFeature> fc, String id,
                        String title, StyledLayerStyle<AttributeMetadataMap> style) {
                this(fc, id, title, null, null, style != null ? style
                                .getGeoObjectStyle() : null, style != null ? style
                                .getMetaData() : null, null);
        }

        /**
         * Creates a default style for the {@link FeatureCollection}.
         * 
         * @see FeatureUtil#createDefaultStyle(FeatureCollection)
         */
        protected Style createDefaultStyle() {
                return FeatureUtil.createDefaultStyle(geoObject);
        }

        /**
         * Returns the meta data needed for displaying a legend.
         */
        public AttributeMetadataMap getAttributeMetaDataMap() {
                return attrMetaData;
        }

        /**
         * Sets the meta data needed for displaying a legend. If {@code legendData}
         * is {@code null} an empty map is set, so
         * {@link #getAttributeMetaDataMap()} never returns {@code null}.
         * 
         * @param attrMetaData
         *            map of attribute meta data
         */
        public void setAttributeMetaData(AttributeMetadataMap attrMetaData) {
                this.attrMetaData = (attrMetaData != null) ? attrMetaData
                                : createDefaultAttributeMetaDataMap(geoObject);
        }

        /**
         * Creates non-translated default meta data for a {@link FeatureCollection}
         * with all attributes visible and no unit set.
         * 
         * @param fc
         *            a {@link FeatureCollection}
         */
        public static AttributeMetadataMap createDefaultAttributeMetaDataMap(
                        FeatureCollection<SimpleFeatureType, SimpleFeature> fc) {
                AttributeMetadataMap metaDataMap = new AttributeMetadataImplMap();
                SimpleFeatureType ftype = fc.getSchema();
                for (int i = 0; i < ftype.getAttributeCount(); i++) {
                        AttributeDescriptor aDesc = ftype.getAttributeDescriptors().get(i);
                        if ( !FeatureUtil.isGeometryAttribute(aDesc) )
                                metaDataMap.put(aDesc.getName(), new AttributeMetadataImpl( new NameImpl( aDesc.getName().getNamespaceURI(), aDesc.getName().getLocalPart()), 
                                                true, // visible
                                                new Translation(aDesc.getLocalName()), // Column name
                                                new Translation(aDesc.getLocalName()), // description
                                                "" // Unit
                                ));
                }
                return metaDataMap;
        }

        /**
         * Simply sets the {@link #geoObject}, {@link #crs}, {@link #envelope} and
         * {@link #attrMetaData} to {@code null}.
         */
        public void dispose() {
                this.geoObject = null;
                this.envelope = null;
                this.crs = null;
                this.attrMetaData = null;
        }

        /**
         * Tests whether the geo object is disposed.
         */
        public boolean isDisposed() {
                return geoObject == null;
        }

        /**
         * Does nothing, because the {@link AbstractStyledLayer} bases on existing
         * objects (in memory) which can not be uncached and reloaded.
         */
        public void uncache() {

                /** It will be recreated on the next getFetureSource() **/
                featureSource = null;

                LOGGER
                                .warn("Uncache onyl uncached any virtual FeatureSource. Object remains in memory.");
        }

        /*
         * (non-Javadoc)
         * 
         * @see skrueger.geotools.StyledLayerInterface#getInfoURL()
         */
        public URL getInfoURL() {
                return null;
        }

        /**
         * Same as {@link #getGeoObject()} method, but complies to the
         * {@link StyledFeaturesInterface}. The associated {@link Filter} is NOT
         * automatically applied.
         * 
         * @see {@link StyledFeaturesInterface}
         * @see #getFeatureCollectionFiltered()
         */
        @Override
        public FeatureCollection<SimpleFeatureType, SimpleFeature> getFeatureCollection() {
                return getGeoObject();
        }

        /**
         * Same as {@link #getGeoObject()} method, but complies to the
         * {@link StyledFeaturesInterface}. The associated {@link Filter} is
         * automatically applied by creating a {@link SubFeatureCollection}.
         * 
         * @see {@link StyledFeaturesInterface}
         * @see #getFeatureCollectionFiltered()
         */
        @Override
        public FeatureCollection<SimpleFeatureType, SimpleFeature> getFeatureCollectionFiltered() {
                final FeatureCollection<SimpleFeatureType, SimpleFeature> fc = getFeatureCollection();
                if (filter == Filter.EXCLUDE)
                        return new EmptyFeatureCollection(fc.getSchema());
                if (filter == Filter.INCLUDE)
                        return fc;
                return fc.subCollection(filter);
        }

        /**
         * Returns a virtual {@link FeatureSource} to access the
         * {@link FeatureCollection}. Once created, it will be reused until
         * {@link #uncache()} is called.<br/>
         * 
         * @see {@link StyledFeaturesInterface}
         */
        @Override
        public FeatureSource<SimpleFeatureType, SimpleFeature> getFeatureSource() {
                if (featureSource == null) {
                        CollectionDataStore store = new CollectionDataStore(getGeoObject());
                        try {
                                featureSource = store.getFeatureSource(store.getTypeNames()[0]);
                        } catch (IOException e) {
                                throw new RuntimeException(
                                                "Could not create a FeatureSource from the CollectionDataStore:",
                                                e);
                        }
                }
                return featureSource;
        }

        @Override
        public Filter getFilter() {
                return filter;
        }

        @Override
        public void setFilter(Filter filter) {
                this.filter = filter;
        }

        @Override
        public SimpleFeatureType getSchema() {
                return getGeoObject().getSchema();
        }


}
1	alfonx	244	/*******************************************************************************
2			* Copyright (c) 2009 Martin O. J. Schmitz.
3			*
4			* This file is part of the SCHMITZM library - a collection of utility
5	alfonx	256	* classes based on Java 1.6, focusing (not only) on Java Swing
6	alfonx	244	* and the Geotools library.
7			*
8			* The SCHMITZM project is hosted at:
9			* http://wald.intevation.org/projects/schmitzm/
10			*
11			* 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			* as published by the Free Software Foundation; either version 3
14			* of the License, or (at your option) any later version.
15			*
16			* This program is distributed in the hope that it will be useful,
17			* but WITHOUT ANY WARRANTY; without even the implied warranty of
18			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19			* GNU General Public License for more details.
20			*
21			* You should have received a copy of the GNU Lesser General Public License (license.txt)
22			* 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			*
26			* Contributors:
27			* Martin O. J. Schmitz - initial API and implementation
28	alfonx	862	* Stefan A. Tzeggai - additional utility classes
29	alfonx	244	******************************************************************************/
30			package skrueger.geotools;
31
32			import java.io.IOException;
33			import java.net.URL;
34
35			import javax.swing.ImageIcon;
36
37			import org.geotools.data.FeatureSource;
38			import org.geotools.data.collection.CollectionDataStore;
39	alfonx	426	import org.geotools.data.store.EmptyFeatureCollection;
40	alfonx	244	import org.geotools.feature.FeatureCollection;
41	alfonx	770	import org.geotools.feature.NameImpl;
42	alfonx	426	import org.geotools.feature.collection.SubFeatureCollection;
43	mojays	325	import org.geotools.styling.Style;
44	alfonx	324	import org.opengis.feature.simple.SimpleFeature;
45	alfonx	322	import org.opengis.feature.simple.SimpleFeatureType;
46	mojays	331	import org.opengis.feature.type.AttributeDescriptor;
47	alfonx	426	import org.opengis.filter.Filter;
48	alfonx	244
49			import schmitzm.geotools.feature.FeatureUtil;
50	alfonx	769	import skrueger.AttributeMetadataImpl;
51	alfonx	244	import skrueger.i8n.Translation;
52
53			/**
54	alfonx	426	* This class provides a simple implementation of {@link StyledLayerInterface}
55			* for {@link FeatureCollection}. The uncache functionality is not supported,
56	alfonx	244	* because this class bases on an existing {@link FeatureCollection} object in
57			* memory.
58			*
59			* @author <a href="mailto:[email protected]">Martin Schmitz</a>
60			* (University of Bonn/Germany)
61			* @version 1.0
62			*/
63	alfonx	426	public class StyledFeatureCollection
64			extends
65			AbstractStyledLayer<FeatureCollection<SimpleFeatureType, SimpleFeature>>
66			implements StyledFeatureCollectionInterface {
67	alfonx	244
68			/** Holds the meta data for displaying a legend. */
69	alfonx	769	protected AttributeMetadataMap<AttributeMetadataImpl> attrMetaData = null;
70	alfonx	244
71			/**
72			* We be filled with a "virtual" {@link FeatureSource} on demand.
73			*/
74	alfonx	324	private FeatureSource<SimpleFeatureType, SimpleFeature> featureSource = null;
75	alfonx	244
76			/**
77	alfonx	426	* A Filter that will be applied internally applied to this
78			* FeatureCollection
79			**/
80			private Filter filter = Filter.INCLUDE;
81
82			/**
83	alfonx	244	* Creates a styled {@link FeatureCollection} with language-specific
84			* informations.
85			*
86			* @param fc
87			* the {@link FeatureCollection}
88			* @param id
89			* a unique ID for the object
90			* @param title
91			* a (language-specific) short description
92			* @param desc
93			* a (language-specific) long description
94			* @param keywords
95			* (language-specific) keywords for the geo objects
96			* @param style
97			* a display style (if {@code null}, a default style is created)
98			* @param attrMetaData
99			* meta data for displaying a legend
100			* @param icon
101			* an icon for the object (can be {@code null})
102			* @exception IllegalArgumentException
103			* if {@code null} is given as ID or geo object
104			*/
105	alfonx	426	public StyledFeatureCollection(
106			FeatureCollection<SimpleFeatureType, SimpleFeature> fc, String id,
107	alfonx	244	Translation title, Translation desc, Translation keywords,
108	alfonx	426	Style style, AttributeMetadataMap attrMetaData, ImageIcon icon) {
109	mojays	331	super(fc, fc.getBounds(), fc.getSchema().getGeometryDescriptor()
110	alfonx	426	.getCoordinateReferenceSystem(), id, title, desc, keywords,
111			style, icon);
112	alfonx	244	setAttributeMetaData(attrMetaData);
113			}
114
115			/**
116			* Creates a styled {@link FeatureCollection} with language-specific
117			* informations.
118			*
119			* @param fc
120			* the {@link FeatureCollection}
121			* @param id
122			* a unique ID for the object
123			* @param title
124			* a (language-specific) short description
125			* @param desc
126			* a (language-specific) long description
127			* @param keywords
128			* (language-specific) keywords for the geo objects
129			* @param style
130			* a display style with attribute meta data information
131			* @param icon
132			* an icon for the object (can be {@code null})
133			* @exception IllegalArgumentException
134			* if {@code null} is given as ID or geo object
135			*/
136	alfonx	426	public StyledFeatureCollection(
137			FeatureCollection<SimpleFeatureType, SimpleFeature> fc, String id,
138	alfonx	244	Translation title, Translation desc, Translation keywords,
139	alfonx	426	StyledLayerStyle<AttributeMetadataMap> style, ImageIcon icon) {
140	mojays	331	super(fc, fc.getBounds(), fc.getSchema().getGeometryDescriptor()
141			.getCoordinateReferenceSystem(), id, title, desc, keywords,
142	alfonx	244	style != null ? style.getGeoObjectStyle() : null, icon);
143			setAttributeMetaData(style != null ? style.getMetaData() : null);
144			}
145
146			/**
147			* Creates a styled {@link FeatureCollection} with a language-specific
148			* title, no long description, no keywords, default attribute meta data and
149			* no icon.
150			*
151			* @param fc
152			* the {@link FeatureCollection}
153			* @param id
154			* a unique ID for the object
155			* @param title
156			* a short description
157			* @param style
158			* a display style (if {@code null}, a default style is created)
159			* @exception IllegalArgumentException
160			* if {@code null} is given as ID or geo object
161			* @see #createDefaultAttributeMetaDataMap(FeatureCollection)
162			*/
163	alfonx	426	public StyledFeatureCollection(
164			FeatureCollection<SimpleFeatureType, SimpleFeature> fc, String id,
165	alfonx	244	Translation title, Style style) {
166			this(fc, id, title, null, null, style, null, null);
167			}
168
169			/**
170			* Creates a styled {@link FeatureCollection} with non-translated
171			* informations.
172			*
173			* @param fc
174			* the {@link FeatureCollection}
175			* @param id
176			* a unique ID for the object
177			* @param title
178			* a short description
179			* @param desc
180			* a long description
181			* @param keywords
182			* keywords for the geo objects
183			* @param style
184			* a display style (if {@code null}, a default style is created)
185			* @param attrMetaData
186			* meta data for displaying a legend
187			* @param icon
188			* an icon for the object (can be {@code null})
189			* @exception IllegalArgumentException
190			* if {@code null} is given as ID or geo object
191			*/
192	alfonx	426	public StyledFeatureCollection(
193			FeatureCollection<SimpleFeatureType, SimpleFeature> fc, String id,
194	alfonx	244	String title, String desc, String keywords, Style style,
195	alfonx	420	AttributeMetadataMap attrMetaData, ImageIcon icon) {
196	alfonx	244	this(fc, id, (Translation) null, null, null, style, attrMetaData, icon);
197			setTitle(title);
198			setDesc(desc);
199			setKeywords(keywords);
200			}
201
202			/**
203			* Creates a styled {@link FeatureCollection} with non-translated
204			* informations.
205			*
206			* @param fc
207			* the {@link FeatureCollection}
208			* @param id
209			* a unique ID for the object
210			* @param title
211			* a short description
212			* @param desc
213			* a long description
214			* @param keywords
215			* keywords for the geo objects
216			* @param style
217			* a display style with attribute meta data information
218			* @param icon
219			* an icon for the object (can be {@code null})
220			* @exception IllegalArgumentException
221			* if {@code null} is given as ID or geo object
222			*/
223	alfonx	426	public StyledFeatureCollection(
224			FeatureCollection<SimpleFeatureType, SimpleFeature> fc, String id,
225	alfonx	244	String title, String desc, String keywords,
226	alfonx	426	StyledLayerStyle<AttributeMetadataMap> style, ImageIcon icon) {
227	alfonx	244	this(fc, id, title, desc, keywords, style != null ? style
228			.getGeoObjectStyle() : null, style != null ? style
229			.getMetaData() : null, icon);
230			}
231
232			/**
233			* Creates a styled {@link FeatureCollection} with a non-translated title,
234			* no long description, no keywords, default attribute meta data and no
235			* icon.
236			*
237			* @param fc
238			* the {@link FeatureCollection}
239			* @param id
240			* a unique ID for the object
241			* @param title
242			* a short description
243			* @param style
244			* a display style (if {@code null}, a default style is created)
245			* @exception IllegalArgumentException
246			* if {@code null} is given as ID or geo object
247			* @see #createDefaultAttributeMetaDataMap(FeatureCollection)
248			*/
249	alfonx	426	public StyledFeatureCollection(
250			FeatureCollection<SimpleFeatureType, SimpleFeature> fc, String id,
251	alfonx	244	String title, Style style) {
252			this(fc, id, title, null, null, style, null, null);
253			}
254
255			/**
256			* Creates a styled {@link FeatureCollection} with a non-translated title,
257			* no long description, no keywords, default attribute meta data and no
258			* icon.
259			*
260			* @param fc
261			* the {@link FeatureCollection}
262			* @param id
263			* a unique ID for the object
264			* @param title
265			* a short description
266			* @param style
267			* a display style (if {@code null}, a default style is created)
268			* @exception IllegalArgumentException
269			* if {@code null} is given as ID or geo object
270			* @see #createDefaultAttributeMetaDataMap(FeatureCollection)
271			*/
272	alfonx	426	public StyledFeatureCollection(
273			FeatureCollection<SimpleFeatureType, SimpleFeature> fc, String id,
274	alfonx	420	String title, StyledLayerStyle<AttributeMetadataMap> style) {
275	alfonx	244	this(fc, id, title, null, null, style != null ? style
276			.getGeoObjectStyle() : null, style != null ? style
277			.getMetaData() : null, null);
278			}
279
280			/**
281			* Creates a default style for the {@link FeatureCollection}.
282			*
283			* @see FeatureUtil#createDefaultStyle(FeatureCollection)
284			*/
285			protected Style createDefaultStyle() {
286			return FeatureUtil.createDefaultStyle(geoObject);
287			}
288
289			/**
290			* Returns the meta data needed for displaying a legend.
291			*/
292	alfonx	420	public AttributeMetadataMap getAttributeMetaDataMap() {
293	alfonx	244	return attrMetaData;
294			}
295
296			/**
297			* Sets the meta data needed for displaying a legend. If {@code legendData}
298			* is {@code null} an empty map is set, so
299			* {@link #getAttributeMetaDataMap()} never returns {@code null}.
300			*
301			* @param attrMetaData
302			* map of attribute meta data
303			*/
304	alfonx	426	public void setAttributeMetaData(AttributeMetadataMap attrMetaData) {
305	alfonx	244	this.attrMetaData = (attrMetaData != null) ? attrMetaData
306			: createDefaultAttributeMetaDataMap(geoObject);
307			}
308
309			/**
310			* Creates non-translated default meta data for a {@link FeatureCollection}
311			* with all attributes visible and no unit set.
312			*
313			* @param fc
314			* a {@link FeatureCollection}
315			*/
316	alfonx	420	public static AttributeMetadataMap createDefaultAttributeMetaDataMap(
317	alfonx	426	FeatureCollection<SimpleFeatureType, SimpleFeature> fc) {
318	alfonx	769	AttributeMetadataMap metaDataMap = new AttributeMetadataImplMap();
319	alfonx	318	SimpleFeatureType ftype = fc.getSchema();
320	alfonx	244	for (int i = 0; i < ftype.getAttributeCount(); i++) {
321	alfonx	464	AttributeDescriptor aDesc = ftype.getAttributeDescriptors().get(i);
322	mojays	1047	if ( !FeatureUtil.isGeometryAttribute(aDesc) )
323	alfonx	770	metaDataMap.put(aDesc.getName(), new AttributeMetadataImpl( new NameImpl( aDesc.getName().getNamespaceURI(), aDesc.getName().getLocalPart()),
324	alfonx	244	true, // visible
325	alfonx	464	new Translation(aDesc.getLocalName()), // Column name
326			new Translation(aDesc.getLocalName()), // description
327	alfonx	244	"" // Unit
328			));
329			}
330			return metaDataMap;
331			}
332
333			/**
334			* Simply sets the {@link #geoObject}, {@link #crs}, {@link #envelope} and
335			* {@link #attrMetaData} to {@code null}.
336			*/
337			public void dispose() {
338			this.geoObject = null;
339			this.envelope = null;
340			this.crs = null;
341			this.attrMetaData = null;
342			}
343
344			/**
345			* Tests whether the geo object is disposed.
346			*/
347			public boolean isDisposed() {
348			return geoObject == null;
349			}
350
351			/**
352			* Does nothing, because the {@link AbstractStyledLayer} bases on existing
353			* objects (in memory) which can not be uncached and reloaded.
354			*/
355			public void uncache() {
356
357			/ It will be recreated on the next getFetureSource() /
358			featureSource = null;
359
360			LOGGER
361			.warn("Uncache onyl uncached any virtual FeatureSource. Object remains in memory.");
362			}
363
364			/*
365			* (non-Javadoc)
366			*
367			* @see skrueger.geotools.StyledLayerInterface#getInfoURL()
368			*/
369			public URL getInfoURL() {
370			return null;
371			}
372
373			/**
374	alfonx	426	* Same as {@link #getGeoObject()} method, but complies to the
375			* {@link StyledFeaturesInterface}. The associated {@link Filter} is NOT
376			* automatically applied.
377			*
378	alfonx	244	* @see {@link StyledFeaturesInterface}
379	alfonx	426	* @see #getFeatureCollectionFiltered()
380	alfonx	244	*/
381			@Override
382	alfonx	426	public FeatureCollection<SimpleFeatureType, SimpleFeature> getFeatureCollection() {
383	alfonx	244	return getGeoObject();
384			}
385
386			/**
387	alfonx	426	* Same as {@link #getGeoObject()} method, but complies to the
388			* {@link StyledFeaturesInterface}. The associated {@link Filter} is
389			* automatically applied by creating a {@link SubFeatureCollection}.
390			*
391			* @see {@link StyledFeaturesInterface}
392			* @see #getFeatureCollectionFiltered()
393			*/
394			@Override
395			public FeatureCollection<SimpleFeatureType, SimpleFeature> getFeatureCollectionFiltered() {
396			final FeatureCollection<SimpleFeatureType, SimpleFeature> fc = getFeatureCollection();
397			if (filter == Filter.EXCLUDE)
398			return new EmptyFeatureCollection(fc.getSchema());
399			if (filter == Filter.INCLUDE)
400			return fc;
401			return fc.subCollection(filter);
402			}
403
404			/**
405	alfonx	244	* Returns a virtual {@link FeatureSource} to access the
406			* {@link FeatureCollection}. Once created, it will be reused until
407			* {@link #uncache()} is called.<br/>
408	alfonx	426	*
409	alfonx	244	* @see {@link StyledFeaturesInterface}
410			*/
411			@Override
412	alfonx	426	public FeatureSource<SimpleFeatureType, SimpleFeature> getFeatureSource() {
413	alfonx	244	if (featureSource == null) {
414			CollectionDataStore store = new CollectionDataStore(getGeoObject());
415			try {
416			featureSource = store.getFeatureSource(store.getTypeNames()[0]);
417			} catch (IOException e) {
418			throw new RuntimeException(
419			"Could not create a FeatureSource from the CollectionDataStore:",
420			e);
421			}
422			}
423			return featureSource;
424			}
425
426	alfonx	426	@Override
427			public Filter getFilter() {
428			return filter;
429			}
430
431			@Override
432			public void setFilter(Filter filter) {
433			this.filter = filter;
434			}
435
436			@Override
437			public SimpleFeatureType getSchema() {
438			return getGeoObject().getSchema();
439			}
440
441
442	alfonx	244	}