Source Code Cross Referenced for FeatureCollectionUtil.java in  » GIS » openjump » org » openjump » sigle » utilities » geom » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » GIS » openjump » org.openjump.sigle.utilities.geom 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        package org.openjump.sigle.utilities.geom;
02:
03:        import java.util.ArrayList;
04:        import java.util.Iterator;
05:
06:        import com.vividsolutions.jts.geom.GeometryCollection;
07:        import com.vividsolutions.jump.feature.Feature;
08:        import com.vividsolutions.jump.feature.FeatureCollection;
09:        import com.vividsolutions.jump.feature.FeatureSchema;
10:
11:        /**
12:         * @author Erwan Bocher 
13:         * @author Olivier Bedel
14:         * Created on 10 août 2005
15:         * Bassin Versant du Jaudy-Guindy-Bizien, 
16:         * Laboratoire RESO UMR ESO 6590 CNRS, Université de Rennes 2
17:         * licence Cecill
18:         * 
19:         * Cette classe permet de savoir si la feature collection est composée d'une seule géometrie et dans ce cas le type de géometrie
20:         *
21:         */
22:
23:        public class FeatureCollectionUtil {
24:
25:            // renvoie la dimension des entites de la featureCollection fc :
26:            // 0 pour si fc ne contient que des entites ponctuelles
27:            // 1 pour si fc ne contient que des entites lineaires
28:            // 2 pour si fc ne contient que des entites surfaciques
29:            // -1 si fc ne contient aucune entite, ou si elle contient des entites 
30:            // ayant des dimensions differentes
31:
32:            public static int getFeatureCollectionDimension(FeatureCollection fc) {
33:                int type = -1; // type des geometry des entites de la featurecollection
34:                // -1 correspond au type complexe 
35:                // (plusieurs dimensions de geometry dans la meme featureCollection) 
36:
37:                if (fc.getFeatures().size() > 0) {
38:                    Iterator i = fc.getFeatures().iterator();
39:
40:                    // initialisation des la variable type
41:                    Feature f = (Feature) i.next();
42:                    type = f.getGeometry().getDimension();
43:                    // cas particulier des geometryCollection
44:                    if (f.getGeometry() instanceof  GeometryCollection) {
45:                        GeometryCollection geomCol = (GeometryCollection) f
46:                                .getGeometry();
47:                        // on ne prend en compte que les geometryCollection non specialisees, ie pas les
48:                        // multipoint, multilinstring ou multipolygon
49:                        if (geomCol.getGeometryType().equalsIgnoreCase(
50:                                "GeometryCollection"))
51:                            type = -1;
52:                    }
53:
54:                    // on parcourt le reste des entites de la featureCollection
55:                    while (i.hasNext() && type != -1) {
56:                        f = (Feature) i.next();
57:                        // si la geometrie de f est complexe, on marque le type comme complexe
58:                        if (f.getGeometry() instanceof  GeometryCollection) {
59:                            GeometryCollection geomCol = (GeometryCollection) f
60:                                    .getGeometry();
61:                            if (geomCol.getGeometryType().equalsIgnoreCase(
62:                                    "GeometryCollection"))
63:                                type = -1;
64:                        }
65:                        // si sa dimension ne correspond pas au
66:                        // type precedent, on marque le type comme complexe
67:                        if (f.getGeometry().getDimension() != type)
68:                            type = -1;
69:                    }
70:                }
71:
72:                return type;
73:            }
74:
75:            public static ArrayList getAttributesList(FeatureCollection fc) {
76:
77:                ArrayList AttributesList = new ArrayList();
78:                FeatureSchema fs = fc.getFeatureSchema();
79:
80:                for (int i = 0; i < fs.getAttributeCount() - 1; i++) {
81:
82:                    AttributesList.add(fs.getAttributeName(i));
83:
84:                }
85:
86:                return AttributesList;
87:
88:            }
89:        }
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