    001    //$HeadURL: svn+ssh://mschneider@svn.wald.intevation.org/deegree/base/trunk/src/org/deegree/model/feature/DefaultFeatureCollection.java $
    002    /*----------------------------------------------------------------------------
    003     This file is part of deegree, http://deegree.org/
    004     Copyright (C) 2001-2009 by:
    005       Department of Geography, University of Bonn
    006     and
    007       lat/lon GmbH
    008
    009     This library is free software; you can redistribute it and/or modify it under
    010     the terms of the GNU Lesser General Public License as published by the Free
    011     Software Foundation; either version 2.1 of the License, or (at your option)
    012     any later version.
    013     This library is distributed in the hope that it will be useful, but WITHOUT
    014     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    015     FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
    016     details.
    017     You should have received a copy of the GNU Lesser General Public License
    018     along with this library; if not, write to the Free Software Foundation, Inc.,
    019     59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    020
    021     Contact information:
    022
    023     lat/lon GmbH
    024     Aennchenstr. 19, 53177 Bonn
    025     Germany
    026     http://lat-lon.de/
    027
    028     Department of Geography, University of Bonn
    029     Prof. Dr. Klaus Greve
    030     Postfach 1147, 53001 Bonn
    031     Germany
    032     http://www.geographie.uni-bonn.de/deegree/
    033
    034     e-mail: info@deegree.org
    035    ----------------------------------------------------------------------------*/
    036    package org.deegree.model.feature;
    037
    038    import java.io.Serializable;
    039    import java.util.HashSet;
    040    import java.util.Iterator;
    041    import java.util.List;
    042    import java.util.Set;
    043
    044    import org.deegree.datatypes.QualifiedName;
    045    import org.deegree.io.datastore.PropertyPathResolvingException;
    046    import org.deegree.model.spatialschema.Envelope;
    047    import org.deegree.model.spatialschema.GeometryException;
    048    import org.deegree.ogcbase.PropertyPath;
    049
    050    /**
    051     * Represents a {@link FeatureCollection} that only contains <code>wfs:featureTuple</code> elements (as introduced by
    052     * the draft WFS 1.2 spec).
    053     * <p>
    054     * NOTE: Some concepts of ordinary feature collections (like adding and removing of features) do not match well to this
    055     * special kind of feature collection, mostly because it uses a <code>FeatureArrayPropertyType</code> for the
    056     * <code>wfs:featureTuple</code> element. Thus, many methods inherited from {@link AbstractFeatureCollection} have no
    057     * clear semantic and are not available.
    058     *
    059     * !!!Please note that most methods are not implemented yet!!!
    060     *
    061     * @author <a href="mailto:schneider@lat-lon.de">Markus Schneider</a>
    062     * @version $Revision: 6840 $ $Date: 2007-05-07 10:27:43 +0200 (Mo, 07 Mai 2007) $
    063     */
    064    public class FeatureTupleCollection extends AbstractFeatureCollection implements Serializable {
    065
    066        private static final long serialVersionUID = 2651676067288914826L;
    067
    068        private int tupleLength;
    069
    070        private List<Feature[]> tuples;
    071
    072        private Set<Feature> allFeatures = new HashSet<Feature>();
    073
    074        private Envelope envelope;
    075
    076        FeatureTupleCollection( String id, List<Feature[]> tuples, int tupleLength ) {
    077            super( id );
    078            this.tuples = tuples;
    079            this.tupleLength = tupleLength;
    080            for ( Feature[] features : tuples ) {
    081                assert features.length == tupleLength;
    082                for ( Feature feature : features ) {
    083                    allFeatures.add( feature );
    084                }
    085            }
    086        }
    087
    088        /*
    089         * (non-Javadoc)
    090         *
    091         * @see org.deegree.model.feature.FeatureCollection#clear()
    092         */
    093        public void clear() {
    094            allFeatures.clear();
    095        }
    096
    097        /**
    098         * Returns the feature tuple at the given index.
    099         *
    100         * @param index
    101         * @return the feature tuple at the given index
    102         */
    103        public Feature[] getTuple( int index ) {
    104            return this.tuples.get( index );
    105        }
    106
    107        /**
    108         * Returns the number of feature tuples contained in this collection.
    109         *
    110         * @return the number of feature tuples contained in this collection
    111         */
    112        public int numTuples() {
    113            return this.tuples.size();
    114        }
    115
    116        /**
    117         * Returns the length (number of features) of each tuple.
    118         *
    119         * @return the length (number of features) of each tuple.
    120         */
    121        public int tupleLength() {
    122            return this.tupleLength;
    123        }
    124
    125        @Override
    126        public synchronized Envelope getBoundedBy()
    127                                throws GeometryException {
    128
    129            Envelope combinedEnvelope = this.envelope;
    130
    131            if ( combinedEnvelope == null && this.allFeatures.size() > 0 ) {
    132                for ( Feature feature : this.allFeatures ) {
    133                    Envelope nextFeatureEnvelope = feature.getBoundedBy();
    134                    if ( combinedEnvelope == null ) {
    135                        combinedEnvelope = nextFeatureEnvelope;
    136                    } else if ( nextFeatureEnvelope != null ) {
    137                        combinedEnvelope = combinedEnvelope.merge( nextFeatureEnvelope );
    138                    }
    139                }
    140                this.envelope = combinedEnvelope;
    141            }
    142            return combinedEnvelope;
    143        }
    144
    145        public int size() {
    146            return this.tuples.size();
    147        }
    148
    149        public void add( Feature feature ) {
    150            throw new NoSuchMethodError();
    151        }
    152
    153        public Feature getFeature( int index ) {
    154            return null;
    155        }
    156
    157        public Feature getFeature( String id ) {
    158            throw new NoSuchMethodError();
    159        }
    160
    161        public Iterator<Feature> iterator() {
    162            throw new NoSuchMethodError();
    163        }
    164
    165        public Feature remove( Feature feature ) {
    166            throw new NoSuchMethodError();
    167        }
    168
    169        public Feature remove( int index ) {
    170            throw new NoSuchMethodError();
    171        }
    172
    173        public Feature[] toArray() {
    174            throw new NoSuchMethodError();
    175        }
    176
    177        public void addProperty( FeatureProperty property ) {
    178            throw new NoSuchMethodError();
    179        }
    180
    181        public FeatureProperty getDefaultProperty( PropertyPath path )
    182                                throws PropertyPathResolvingException {
    183            throw new NoSuchMethodError();
    184        }
    185
    186        public void removeProperty( QualifiedName propertyName ) {
    187            throw new NoSuchMethodError();
    188        }
    189
    190        public void replaceProperty( FeatureProperty oldProperty, FeatureProperty newProperty ) {
    191            throw new NoSuchMethodError();
    192        }
    193
    194        public void setProperty( FeatureProperty property, int index ) {
    195            throw new NoSuchMethodError();
    196        }
    197
    198        /*
    199         * (non-Javadoc)
    200         *
    201         * @see org.deegree.model.feature.Feature#cloneDeep()
    202         */
    203        public Feature cloneDeep()
    204                                throws CloneNotSupportedException {
    205            throw new CloneNotSupportedException();
    206        }
    207
    208    }