src/skrueger/AttributeMetadataImpl.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;

import java.util.HashSet;
import java.util.List;

import org.apache.log4j.Logger;
import org.geotools.feature.NameImpl;
import org.opengis.feature.type.AttributeDescriptor;
import org.opengis.feature.type.Name;

import skrueger.geotools.Copyable;
import skrueger.geotools.StyledLayerInterface;
import skrueger.i8n.I8NUtil;
import skrueger.i8n.Translation;

/**
 * This class holds meta information about an attribute/column. This information
 * is used by {@link StyledLayerInterface} and many others.<br/>
 * 
 * @author <a href="mailto:[email protected]">Stefan Alfons Kr&uuml;ger</a>
 */
public class AttributeMetadata implements Copyable<AttributeMetadata>,
                Comparable<AttributeMetadata> {
        
        static private final Logger LOGGER = Logger
                        .getLogger(AttributeMetadata.class);

        /** Translation of the attribute's description **/
        protected Translation desc = new Translation();

        /**
         * For numerical attributes the value can be transformed by VALUE*X+A when
         * presented on screen. TODO not implemented yet
         **/
        protected Double functionA = 0.;

        /**
         * For numerical attributes the value can be transformed by VALUE*X+A when
         * presented on screen. TODO not implemented yet
         **/
        protected Double functionX = 1.;

        /** The Name of the attribute **/
        private Name name;

        /**
         * Allows to define general NODATA values for an attribute. e.g. -9999 can
         * be set and will always be interpreted as NULL internally and will usually
         * be ignored. This overcomes the problem, that 
         **/
        protected HashSet<Object> nodataValues = new HashSet<Object>();

        /** Translation of the attribute's title **/
        protected Translation title = new Translation();

        /**
         * The unit append to all visualizations of values of this attribute (is not
         * null)
         **/
        protected String unit = "";

        /** Is the attribute visible to the user or ignored where possible **/
        protected boolean visible = true;

        /**
         * When listed, the attributes are listed according to their {@link #weight} (heavier
         * => further down)
         * @see #compareTo(AttributeMetadata)
         **/
        protected int weight = 0;

        /** Only used for {@link Copyable<AttributeMetaData>#copy()} **/
        private AttributeMetadata() {
        }

        public AttributeMetadata(final AttributeDescriptor attDesc, final int weight,
                        final List<String> langs) {
                this(attDesc.getName(), langs);
                setWeight(weight);
        }

        public AttributeMetadata(final AttributeDescriptor attDesc, final List<String> langs) {
                this(attDesc.getName(), langs);
        }

        /**
         * Creates an {@link AttributeMetadata} object with the following
         * information
         * 
         * @param colIdx
         *            The column index of this attribute in the underlying
         *            table/dbf/etc...
         * @param visible
         *            Shall this attribute be displayed or hidden from the user?
         * @param title
         *            {@link Translation} for Name
         * @param desc
         *            {@link Translation} for an attribute description
         * @param unit
         *            {@link String} of the unit that the information is in
         */
        public AttributeMetadata(final Name name, final Boolean visible,
                        final Translation title, final Translation desc, final String unit) {

                this.setName(name);
                this.title = title;
                this.desc = desc;
                this.visible = visible;
                this.unit = unit;
        }
        

        /**
         * Creates an {@link AttributeMetadata} object with the following
         * information
         * 
         * @param colIdx
         *            The column index of this attribute in the underlying
         *            table/dbf/etc...
         * @param visible
         *            Shall this attribute be displayed or hidden from the user?
         * @param unit
         *            {@link String} of the unit that the information is in
         */
        public AttributeMetadata(final Name name, final Boolean visible, final String unit) {
                this.setName(name);
                this.visible = visible;
                this.unit = unit;
        }

        /**
         * Creates a new visible {@link AttributeMetadata}
         */
        public AttributeMetadata(final Name name, final List<String> langs) {
                this(name, true, new Translation(langs, name.getLocalPart()),
                                new Translation(), "");
        }

        /**
         * Creates a new visible {@link AttributeMetadata} 
         */
        public AttributeMetadata(final Name name, final String defaultTitle,
                        final List<String> langs) {
                this(name, true, new Translation(langs, defaultTitle),
                                new Translation(), "");
        }

        /**
         * Creates an {@link AttributeMetadata} object with the following
         * information
         * 
         * @param visible
         *            Shall this attribute be displayed or hidden from the user?
         * @param title
         *            {@link Translation} for Name
         * @param desc
         *            {@link Translation} for an attribute description
         * @param unit
         *            {@link String} of the unit that the information is in
         */
        public AttributeMetadata(final String localName, final Boolean visible,
                        final Translation title, final Translation desc, final String unit) {
                this(new NameImpl(localName), true, title, desc, "");
        }

        /**
         * Creates a new visible {@link AttributeMetadata} with default (no) values.
         */
        public AttributeMetadata(final String localName, final List<String> langs) {
                this(localName, true, new Translation(langs, localName),
                                new Translation(), "");
        }

        /**
         * Creates a new visible {@link AttributeMetadata} 
         */
        public AttributeMetadata(final String localName, final String defaultTitle,
                        final List<String> langs) {
                this(localName, true, new Translation(langs, defaultTitle),
                                new Translation(), "");
        }

        /**
         * Orders the attributes according to their {@link #weight}. Heavier =>
         * further down.
         */
        @Override
        public int compareTo(final AttributeMetadata atm2) {
                return new Integer(weight).compareTo(atm2.getWeight());
        }

        /**
         * @see Copyable inferface
         */
        @Override
        public AttributeMetadata copy() {
                return copyTo(new AttributeMetadata());
        }

        /**
         * @see Copyable inferface
         */
        @Override
        public AttributeMetadata copyTo(final AttributeMetadata amd) {
                getTitle().copyTo(amd.getTitle());
                getDesc().copyTo(amd.getDesc());
                amd.setUnit(getUnit());
                amd.setVisible(isVisible());
                amd.setName(new NameImpl(getName().getNamespaceURI(), getName()
                                .getLocalPart()));

                amd.setWeight(getWeight());
                amd.setFunctionX(getFunctionX());
                amd.setFunctionA(getFunctionA());

                amd.setNodataValues(getNodataValues());

                return amd;
        }

        // only to be used by copyTo()
        private void setNodataValues(HashSet<Object> nodataValues2) {
                nodataValues = nodataValues2;
        }

        public Translation getDesc() {
                return desc;
        }

        public Double getFunctionA() {
                return functionA;
        }

        public Double getFunctionX() {
                return functionX;
        }

        /**
         * The local name. E.g. the name of the DBF column as a {@link String}
         */
        public String getLocalName() {
                return getName().getLocalPart();
        }

        /**
         * The fully qualified {@link Name} of the attribute, e.g. <code>org.bla.plo:blub</code>
         */
        public Name getName() {
                return name;
        }

        public HashSet<Object> getNodataValues() {
                return nodataValues;
        }

        /**
         * @return a number between 0 (bad) and 1 (good) that is calculated from the
         *         amount of translation available. If this attribute is not
         *         {@link #visible}, it will return 1.
         */
        public double getQuality(final List<String> languages) {

                if (!isVisible())
                        return 1.;

                return (I8NUtil.qmTranslation(languages, getTitle()) * 2. + I8NUtil
                                .qmTranslation(languages, getDesc()) * 1.) / 3.;
        }

        public Translation getTitle() {
                return title;
        }

        public String getUnit() {
                return unit;
        }

        public int getWeight() {
                return weight;
        }

        /**
         * Will the end-user see this attribute?
         */
        public boolean isVisible() {
                return visible;
        }

        public void setDesc(final Translation desc) {
                this.desc = desc;
        }

        public void setFunctionA(final Double functionA) {
                this.functionA = functionA;
        }

        public void setFunctionX(final Double functionX) {
                this.functionX = functionX;
        }

        /**
         * The fully qualified Name of the attribute, e.g. org.bla.plo:blub
         */
        public void setLocalName(final String localName) {
                this.name = new NameImpl(localName);
        }

        /**
         * The fully qualified {@link Name} of the attribute, e.g. <code>org.bla.plo:blub</code>
         */
        public void setName(final Name name) {
                this.name = name;
        }

        public void addNodataValue(Object nodataValue) {
                this.nodataValues.add(nodataValue);
        }
        
        public void removeNodataValue(Object nodataValue) {
                this.nodataValues.remove(nodataValue);
        }

        public void setTitle(final Translation title) {
                this.title = title;
        }

        public void setUnit(final String unit) {
                this.unit = unit;
        }

        public void setVisible(final boolean visible) {
                this.visible = visible;
        }

        /**
         * Shall the end-user see this attribute?
         * @param visible
         */
        public void setVisible(final Boolean visible) {
//              // The THE_GEOM and shall never be visible! 
//              if (name.getLocalPart().equalsIgnoreCase("the_geom"))
//                      this.visible = false;
//              else
//                      this.visible = visible;

                this.visible = visible;
        }

        public void setWeight(final int weight) {
                this.weight = weight;
        }
        
        /**
         * For nicer debugging
         */
        @Override
        public String toString() {
                StringBuffer sb = new StringBuffer();
                if (name != null) sb.append(name.toString()+" ");
                sb.append("weight="+weight+" ");
                sb.append("title="+getTitle().toString());
                return sb.toString();
        }

        /**
         * Takes any value object and checks it against the NODATA values. If the
         * value equals a NODATA value, <code>null</code> is returned. Otherwise the
         * same object is returned.
         * 
         * Note: This method is called often.
         */
        public Object fiterNodata(final Object value) {
                if (nodataValues.contains(value)) return null;
                return value;
        }
}
1	/*******************************************************************************
2	* Copyright (c) 2009 Martin O. J. Schmitz.
3	*
4	* This file is part of the SCHMITZM library - a collection of utility
5	* classes based on Java 1.6, focusing (not only) on Java Swing
6	* 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;
31
32	import java.util.HashSet;
33	import java.util.List;
34
35	import org.apache.log4j.Logger;
36	import org.geotools.feature.NameImpl;
37	import org.opengis.feature.type.AttributeDescriptor;
38	import org.opengis.feature.type.Name;
39
40	import skrueger.geotools.Copyable;
41	import skrueger.geotools.StyledLayerInterface;
42	import skrueger.i8n.I8NUtil;
43	import skrueger.i8n.Translation;
44
45	/**
46	* This class holds meta information about an attribute/column. This information
47	* is used by {@link StyledLayerInterface} and many others.<br/>
48	*
49	* @author <a href="mailto:[email protected]">Stefan Alfons Krüger</a>
50	*/
51	public class AttributeMetadata implements Copyable<AttributeMetadata>,
52	Comparable<AttributeMetadata> {
53
54	static private final Logger LOGGER = Logger
55	.getLogger(AttributeMetadata.class);
56
57	/ Translation of the attribute's description /
58	protected Translation desc = new Translation();
59
60	/**
61	* For numerical attributes the value can be transformed by VALUE*X+A when
62	* presented on screen. TODO not implemented yet
63	**/
64	protected Double functionA = 0.;
65
66	/**
67	* For numerical attributes the value can be transformed by VALUE*X+A when
68	* presented on screen. TODO not implemented yet
69	**/
70	protected Double functionX = 1.;
71
72	/ The Name of the attribute /
73	private Name name;
74
75	/**
76	* Allows to define general NODATA values for an attribute. e.g. -9999 can
77	* be set and will always be interpreted as NULL internally and will usually
78	* be ignored. This overcomes the problem, that
79	**/
80	protected HashSet<Object> nodataValues = new HashSet<Object>();
81
82	/ Translation of the attribute's title /
83	protected Translation title = new Translation();
84
85	/**
86	* The unit append to all visualizations of values of this attribute (is not
87	* null)
88	**/
89	protected String unit = "";
90
91	/ Is the attribute visible to the user or ignored where possible /
92	protected boolean visible = true;
93
94	/**
95	* When listed, the attributes are listed according to their {@link #weight} (heavier
96	* => further down)
97	* @see #compareTo(AttributeMetadata)
98	**/
99	protected int weight = 0;
100
101	/ Only used for {@link Copyable<AttributeMetaData>#copy()} /
102	private AttributeMetadata() {
103	}
104
105	public AttributeMetadata(final AttributeDescriptor attDesc, final int weight,
106	final List<String> langs) {
107	this(attDesc.getName(), langs);
108	setWeight(weight);
109	}
110
111	public AttributeMetadata(final AttributeDescriptor attDesc, final List<String> langs) {
112	this(attDesc.getName(), langs);
113	}
114
115	/**
116	* Creates an {@link AttributeMetadata} object with the following
117	* information
118	*
119	* @param colIdx
120	* The column index of this attribute in the underlying
121	* table/dbf/etc...
122	* @param visible
123	* Shall this attribute be displayed or hidden from the user?
124	* @param title
125	* {@link Translation} for Name
126	* @param desc
127	* {@link Translation} for an attribute description
128	* @param unit
129	* {@link String} of the unit that the information is in
130	*/
131	public AttributeMetadata(final Name name, final Boolean visible,
132	final Translation title, final Translation desc, final String unit) {
133
134	this.setName(name);
135	this.title = title;
136	this.desc = desc;
137	this.visible = visible;
138	this.unit = unit;
139	}
140
141
142	/**
143	* Creates an {@link AttributeMetadata} object with the following
144	* information
145	*
146	* @param colIdx
147	* The column index of this attribute in the underlying
148	* table/dbf/etc...
149	* @param visible
150	* Shall this attribute be displayed or hidden from the user?
151	* @param unit
152	* {@link String} of the unit that the information is in
153	*/
154	public AttributeMetadata(final Name name, final Boolean visible, final String unit) {
155	this.setName(name);
156	this.visible = visible;
157	this.unit = unit;
158	}
159
160	/**
161	* Creates a new visible {@link AttributeMetadata}
162	*/
163	public AttributeMetadata(final Name name, final List<String> langs) {
164	this(name, true, new Translation(langs, name.getLocalPart()),
165	new Translation(), "");
166	}
167
168	/**
169	* Creates a new visible {@link AttributeMetadata}
170	*/
171	public AttributeMetadata(final Name name, final String defaultTitle,
172	final List<String> langs) {
173	this(name, true, new Translation(langs, defaultTitle),
174	new Translation(), "");
175	}
176
177	/**
178	* Creates an {@link AttributeMetadata} object with the following
179	* information
180	*
181	* @param visible
182	* Shall this attribute be displayed or hidden from the user?
183	* @param title
184	* {@link Translation} for Name
185	* @param desc
186	* {@link Translation} for an attribute description
187	* @param unit
188	* {@link String} of the unit that the information is in
189	*/
190	public AttributeMetadata(final String localName, final Boolean visible,
191	final Translation title, final Translation desc, final String unit) {
192	this(new NameImpl(localName), true, title, desc, "");
193	}
194
195	/**
196	* Creates a new visible {@link AttributeMetadata} with default (no) values.
197	*/
198	public AttributeMetadata(final String localName, final List<String> langs) {
199	this(localName, true, new Translation(langs, localName),
200	new Translation(), "");
201	}
202
203	/**
204	* Creates a new visible {@link AttributeMetadata}
205	*/
206	public AttributeMetadata(final String localName, final String defaultTitle,
207	final List<String> langs) {
208	this(localName, true, new Translation(langs, defaultTitle),
209	new Translation(), "");
210	}
211
212	/**
213	* Orders the attributes according to their {@link #weight}. Heavier =>
214	* further down.
215	*/
216	@Override
217	public int compareTo(final AttributeMetadata atm2) {
218	return new Integer(weight).compareTo(atm2.getWeight());
219	}
220
221	/**
222	* @see Copyable inferface
223	*/
224	@Override
225	public AttributeMetadata copy() {
226	return copyTo(new AttributeMetadata());
227	}
228
229	/**
230	* @see Copyable inferface
231	*/
232	@Override
233	public AttributeMetadata copyTo(final AttributeMetadata amd) {
234	getTitle().copyTo(amd.getTitle());
235	getDesc().copyTo(amd.getDesc());
236	amd.setUnit(getUnit());
237	amd.setVisible(isVisible());
238	amd.setName(new NameImpl(getName().getNamespaceURI(), getName()
239	.getLocalPart()));
240
241	amd.setWeight(getWeight());
242	amd.setFunctionX(getFunctionX());
243	amd.setFunctionA(getFunctionA());
244
245	amd.setNodataValues(getNodataValues());
246
247	return amd;
248	}
249
250	// only to be used by copyTo()
251	private void setNodataValues(HashSet<Object> nodataValues2) {
252	nodataValues = nodataValues2;
253	}
254
255	public Translation getDesc() {
256	return desc;
257	}
258
259	public Double getFunctionA() {
260	return functionA;
261	}
262
263	public Double getFunctionX() {
264	return functionX;
265	}
266
267	/**
268	* The local name. E.g. the name of the DBF column as a {@link String}
269	*/
270	public String getLocalName() {
271	return getName().getLocalPart();
272	}
273
274	/**
275	* The fully qualified {@link Name} of the attribute, e.g. <code>org.bla.plo:blub</code>
276	*/
277	public Name getName() {
278	return name;
279	}
280
281	public HashSet<Object> getNodataValues() {
282	return nodataValues;
283	}
284
285	/**
286	* @return a number between 0 (bad) and 1 (good) that is calculated from the
287	* amount of translation available. If this attribute is not
288	* {@link #visible}, it will return 1.
289	*/
290	public double getQuality(final List<String> languages) {
291
292	if (!isVisible())
293	return 1.;
294
295	return (I8NUtil.qmTranslation(languages, getTitle()) * 2. + I8NUtil
296	.qmTranslation(languages, getDesc()) * 1.) / 3.;
297	}
298
299	public Translation getTitle() {
300	return title;
301	}
302
303	public String getUnit() {
304	return unit;
305	}
306
307	public int getWeight() {
308	return weight;
309	}
310
311	/**
312	* Will the end-user see this attribute?
313	*/
314	public boolean isVisible() {
315	return visible;
316	}
317
318	public void setDesc(final Translation desc) {
319	this.desc = desc;
320	}
321
322	public void setFunctionA(final Double functionA) {
323	this.functionA = functionA;
324	}
325
326	public void setFunctionX(final Double functionX) {
327	this.functionX = functionX;
328	}
329
330	/**
331	* The fully qualified Name of the attribute, e.g. org.bla.plo:blub
332	*/
333	public void setLocalName(final String localName) {
334	this.name = new NameImpl(localName);
335	}
336
337	/**
338	* The fully qualified {@link Name} of the attribute, e.g. <code>org.bla.plo:blub</code>
339	*/
340	public void setName(final Name name) {
341	this.name = name;
342	}
343
344	public void addNodataValue(Object nodataValue) {
345	this.nodataValues.add(nodataValue);
346	}
347
348	public void removeNodataValue(Object nodataValue) {
349	this.nodataValues.remove(nodataValue);
350	}
351
352	public void setTitle(final Translation title) {
353	this.title = title;
354	}
355
356	public void setUnit(final String unit) {
357	this.unit = unit;
358	}
359
360	public void setVisible(final boolean visible) {
361	this.visible = visible;
362	}
363
364	/**
365	* Shall the end-user see this attribute?
366	* @param visible
367	*/
368	public void setVisible(final Boolean visible) {
369	// // The THE_GEOM and shall never be visible!
370	// if (name.getLocalPart().equalsIgnoreCase("the_geom"))
371	// this.visible = false;
372	// else
373	// this.visible = visible;
374
375	this.visible = visible;
376	}
377
378	public void setWeight(final int weight) {
379	this.weight = weight;
380	}
381
382	/**
383	* For nicer debugging
384	*/
385	@Override
386	public String toString() {
387	StringBuffer sb = new StringBuffer();
388	if (name != null) sb.append(name.toString()+" ");
389	sb.append("weight="+weight+" ");
390	sb.append("title="+getTitle().toString());
391	return sb.toString();
392	}
393
394	/**
395	* Takes any value object and checks it against the NODATA values. If the
396	* value equals a NODATA value, <code>null</code> is returned. Otherwise the
397	* same object is returned.
398	*
399	* Note: This method is called often.
400	*/
401	public Object fiterNodata(final Object value) {
402	if (nodataValues.contains(value)) return null;
403	return value;
404	}
405	}