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comparison flys-artifacts/src/main/java/de/intevation/flys/utils/GeometryUtils.java @ 1106:e9f66d63bdd0

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Write user defined barriers into a shapefile that is placed in the Artifact's directory. flys-artifacts/trunk@2609 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 30 Aug 2011 11:09:54 +0000
parents eeebf8514c7f
children 005c2964f9af
comparison
equal deleted inserted replaced
1105:adb52a2005e7 1106:e9f66d63bdd0
1 package de.intevation.flys.utils; 1 package de.intevation.flys.utils;
2
3 import java.io.IOException;
4 import java.io.File;
5 import java.io.Serializable;
6 import java.net.MalformedURLException;
7 import java.util.ArrayList;
8 import java.util.HashMap;
9 import java.util.List;
10 import java.util.Map;
2 11
3 import com.vividsolutions.jts.geom.Coordinate; 12 import com.vividsolutions.jts.geom.Coordinate;
4 import com.vividsolutions.jts.geom.Geometry; 13 import com.vividsolutions.jts.geom.Geometry;
5 14
15 import org.opengis.feature.simple.SimpleFeature;
16 import org.opengis.feature.simple.SimpleFeatureType;
17
18 import org.geotools.data.DataStoreFactorySpi;
19 import org.geotools.data.DataUtilities;
20 import org.geotools.data.FeatureStore;
21 import org.geotools.data.DefaultTransaction;
22 import org.geotools.data.Transaction;
23 import org.geotools.data.shapefile.ShapefileDataStore;
24 import org.geotools.data.shapefile.ShapefileDataStoreFactory;
25 import org.geotools.feature.FeatureIterator;
26 import org.geotools.feature.FeatureCollection;
27 import org.geotools.feature.SchemaException;
28 import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
29 import org.geotools.geojson.feature.FeatureJSON;
30 import org.geotools.referencing.crs.DefaultGeographicCRS;
6 31
7 32
8 public class GeometryUtils { 33 public class GeometryUtils {
9 34
10 private GeometryUtils() { 35 private GeometryUtils() {
26 return null; 51 return null;
27 } 52 }
28 53
29 return "" + c[0].x + " " + c[1].y + " " + c[1].x + " " + c[0].y; 54 return "" + c[0].x + " " + c[1].y + " " + c[1].x + " " + c[0].y;
30 } 55 }
56
57
58 /**
59 * Returns a SimpleFeatureType used while parsing the GeoJSON string that
60 * represents the barriers entered by the user.
61 *
62 * @param srs The SRS that is used by the GeoJSON string.
63 *
64 * @return a SimpleFeatureType.
65 */
66 public static SimpleFeatureType buildBarriersFeatureType(String srs) {
67 SimpleFeatureTypeBuilder builder = new SimpleFeatureTypeBuilder();
68
69 builder.setName("flys");
70 builder.setNamespaceURI("http://www.intevation.de/");
71 builder.setSRS(srs);
72 builder.setDefaultGeometry("geometry");
73
74 builder.add("geometry", org.opengis.geometry.Geometry.class);
75
76 return builder.buildFeatureType();
77 }
78
79
80 public static SimpleFeatureType buildFeatureType(
81 String name, String srid, String geometryType)
82 throws SchemaException
83 {
84 String schema = "geom:" + geometryType + ":srid=" + srid;
85
86 return DataUtilities.createType(name, schema);
87 }
88
89
90 public static List<SimpleFeature> parseGeoJSON(
91 String geojson, SimpleFeatureType ft
92 ) {
93 List<SimpleFeature> collection = new ArrayList<SimpleFeature>();
94
95 try {
96 FeatureJSON fjson = new FeatureJSON();
97 fjson.setFeatureType(ft);
98
99 FeatureIterator<SimpleFeature> iterator =
100 fjson.streamFeatureCollection(geojson);
101
102 while (iterator.hasNext()) {
103 collection.add(iterator.next());
104 }
105 }
106 catch (IOException ioe) {
107 // TODO handle exception
108 }
109
110 return collection;
111 }
112
113
114 public static boolean writeShapefile(
115 File shape,
116 SimpleFeatureType featureType,
117 FeatureCollection collection)
118 throws MalformedURLException, IOException
119 {
120 Map<String, Serializable> params = new HashMap<String, Serializable>();
121 params.put("url", shape.toURI().toURL());
122 params.put("create spatial index", Boolean.TRUE);
123
124 DataStoreFactorySpi dataStoreFactory = new ShapefileDataStoreFactory();
125
126 ShapefileDataStore newDataStore =
127 (ShapefileDataStore)dataStoreFactory.createNewDataStore(params);
128
129 newDataStore.createSchema(featureType);
130 newDataStore.forceSchemaCRS(DefaultGeographicCRS.WGS84);
131
132 Transaction transaction = new DefaultTransaction("create");
133
134 String typeName = newDataStore.getTypeNames()[0];
135
136 FeatureStore<SimpleFeatureType, SimpleFeature> featureStore =
137 (FeatureStore<SimpleFeatureType, SimpleFeature>)
138 newDataStore.getFeatureSource(typeName);
139
140 featureStore.setTransaction(transaction);
141
142 featureStore.addFeatures(collection);
143 transaction.commit();
144
145 return true;
146 }
31 } 147 }
32 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : 148 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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