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