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/******************************************************************************* |
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* Copyright (c) 2009 Martin O. J. Schmitz. |
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* |
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* This file is part of the SCHMITZM library - a collection of utility |
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* classes based on Java 1.6, focusing (not only) on Java Swing |
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* and the Geotools library. |
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* |
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* The SCHMITZM project is hosted at: |
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* http://wald.intevation.org/projects/schmitzm/ |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public License |
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* as published by the Free Software Foundation; either version 3 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License (license.txt) |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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* or try this link: http://www.gnu.org/licenses/lgpl.html |
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* |
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* Contributors: |
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* Martin O. J. Schmitz - initial API and implementation |
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* Stefan A. Tzeggai - additional utility classes |
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******************************************************************************/ |
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package skrueger.geotools.labelsearch; |
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|
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import java.io.IOException; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.Iterator; |
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import java.util.List; |
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|
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import org.apache.log4j.Logger; |
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import org.geotools.data.DefaultQuery; |
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import org.geotools.data.FeatureSource; |
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import org.geotools.feature.FeatureCollection; |
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import org.geotools.filter.text.cql2.CQL; |
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import org.geotools.filter.text.cql2.CQLException; |
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import org.geotools.map.MapLayer; |
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import org.geotools.styling.Style; |
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import org.geotools.styling.TextSymbolizer; |
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import org.opengis.feature.simple.SimpleFeature; |
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import org.opengis.feature.simple.SimpleFeatureType; |
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import org.opengis.filter.Filter; |
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import org.opengis.filter.expression.PropertyName; |
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|
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import schmitzm.geotools.feature.FeatureUtil; |
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import schmitzm.geotools.gui.GeotoolsGUIUtil; |
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import schmitzm.geotools.styling.StylingUtil; |
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import schmitzm.lang.LangUtil; |
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|
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/** |
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* This class allows to search for a {@link String} in a map. The algorithm will |
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* analyze the {@link Style} of every visible(?) layer and determine the label |
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* attribute. This field is then searched for every feature. |
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* |
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* @author Stefan A. Tzeggai |
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* |
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*/ |
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public class LabelSearch { |
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final static private Logger LOGGER = Logger.getLogger(LabelSearch.class); |
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|
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/** Translations come from GTResourceBundle **/ |
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public static String R(String key, Object... values) { |
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return GeotoolsGUIUtil.R(key, values); |
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} |
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|
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protected final schmitzm.geotools.gui.SelectableXMapPane mapPane; |
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|
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public LabelSearch(final schmitzm.geotools.gui.SelectableXMapPane mapPane) { |
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this.mapPane = mapPane; |
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} |
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|
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public List<SearchResult> search(final String string) { |
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|
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final String searchMe = string.toUpperCase(); |
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|
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final ArrayList<SearchResult> hits = new ArrayList<SearchResult>(); |
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|
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for (final MapLayer ml : mapPane.getMapContext().getLayers()) { |
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try { |
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|
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// System.out.println("layer = "+ml.getTitle()); |
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|
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if (!ml.isVisible()) |
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continue; |
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|
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final List<TextSymbolizer> allTS = StylingUtil |
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.getVisibleTextSymbolizers(ml.getStyle()); |
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if (allTS.size() == 0) { |
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// A layer without any TextSymbolizer doesn't have to be |
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// searched any more. |
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continue; |
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} |
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|
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// We only deal with one TextSymbolizer so far: |
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TextSymbolizer ts = allTS.get(0); |
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|
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final FeatureSource<SimpleFeatureType, SimpleFeature> featureSource = (FeatureSource<SimpleFeatureType, SimpleFeature>) ml |
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.getFeatureSource(); |
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|
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SimpleFeatureType schema = featureSource.getSchema(); |
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|
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final String typeName = schema.getName().getLocalPart(); |
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|
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PropertyName prop1 = StylingUtil.getFirstPropertyName(schema, |
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ts); |
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PropertyName prop2 = StylingUtil.getSecondPropertyName(schema, |
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ts); |
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|
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if (StylingUtil.getFirstPropertyName(schema, ts) == null) { |
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// At least one property field we need |
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continue; |
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} |
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|
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Filter searchFilter; |
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String[] properties = new String[] { schema.getGeometryDescriptor().getLocalName(), prop1.getPropertyName() }; |
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// Only one property used... |
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|
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searchFilter = CQL.toFilter("strToUpperCase " |
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+ prop1.getPropertyName() + " LIKE '%" + searchMe |
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+ "%'"); |
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|
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if (prop2 != null) { |
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Filter searchFilter2 = CQL.toFilter("strToUpperCase " |
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+ prop2.getPropertyName() + " LIKE '%" + searchMe |
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+ "%'"); |
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|
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searchFilter = FeatureUtil.FILTER_FACTORY2.or(searchFilter, |
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searchFilter2); |
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|
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properties = LangUtil.extendArray(properties, prop2 |
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.getPropertyName()); |
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} |
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|
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// Add the layer's filter if it exists |
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Filter layerFilter = ml.getQuery().getFilter(); |
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if (layerFilter != null && layerFilter != Filter.INCLUDE) { |
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searchFilter = FeatureUtil.FILTER_FACTORY2.and(layerFilter, |
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searchFilter); |
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} |
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|
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// LOGGER.info("Searching for "+searchFilter.toString()); |
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|
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FeatureCollection<SimpleFeatureType, SimpleFeature> features = (FeatureCollection<SimpleFeatureType, SimpleFeature>) ml |
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.getFeatureSource().getFeatures( |
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new DefaultQuery(typeName, searchFilter, |
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properties)); |
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|
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final Iterator<SimpleFeature> fi = features.iterator(); |
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try { |
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while (fi.hasNext()) { |
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final SimpleFeature f = fi.next(); |
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|
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String valueString = ""; |
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valueString = f.getAttribute(prop1.getPropertyName()) |
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.toString(); |
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|
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if (prop2 != null) { |
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String valueString2 = f.getAttribute( |
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prop2.getPropertyName()).toString(); |
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|
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if (valueString2 != null && !valueString2.isEmpty()) |
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valueString += ", " + valueString2; |
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} |
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|
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hits.add(createSearchResult(f, valueString, ml |
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.getTitle(), ml)); |
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} |
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} finally { |
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features.close(fi); |
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} |
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} catch (final IOException e) { |
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// Searching this layer failed |
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LOGGER.error("",e); |
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} catch (CQLException e) { |
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LOGGER.error("",e); |
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} |
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} // next layer |
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|
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// Hits from the top-most layer should appear first. |
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Collections.reverse(hits); |
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|
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return hits; |
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} |
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|
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protected SearchResult createSearchResult(final SimpleFeature f, |
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final String title, final String inTitle, MapLayer ml) { |
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return new SearchResultFeature(f, title, inTitle, mapPane, ml); |
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} |
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|
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} |
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