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added a node to download from geofabrik related #74
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169 changes: 169 additions & 0 deletions
169
.../ch/res_ear/samthiriot/knime/shapefilesaswkt/read/read_from_geofabrik/GeofabrikUtils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,169 @@ | ||
| package ch.res_ear.samthiriot.knime.shapefilesaswkt.read.read_from_geofabrik; | ||
|
|
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| import java.io.File; | ||
| import java.io.FileWriter; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.net.MalformedURLException; | ||
| import java.net.URL; | ||
| import java.nio.charset.StandardCharsets; | ||
| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.Iterator; | ||
| import java.util.LinkedHashMap; | ||
| import java.util.Map; | ||
| import java.util.TreeMap; | ||
|
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| import org.apache.commons.io.IOUtils; | ||
| import org.geotools.data.FeatureReader; | ||
| import org.geotools.data.FileDataStore; | ||
| import org.geotools.data.geojson.GeoJSONDataStoreFactory; | ||
| import org.geotools.data.simple.SimpleFeatureCollection; | ||
| import org.geotools.data.simple.SimpleFeatureIterator; | ||
| import org.geotools.data.simple.SimpleFeatureSource; | ||
| import org.opengis.feature.simple.SimpleFeature; | ||
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| import com.fasterxml.jackson.databind.JsonNode; | ||
| import com.fasterxml.jackson.databind.node.ObjectNode; | ||
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| public class GeofabrikUtils { | ||
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| public static final String URL_INDEX_GEOFABRIK = "https://download.geofabrik.de/index-v1.json"; | ||
| // | ||
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| // https://download.geofabrik.de/index-v1-nogeom.json | ||
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| public static File readGeofabrikIndexIntoFile() { | ||
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| try { | ||
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| // load the file first | ||
| URL url = new URL(URL_INDEX_GEOFABRIK); | ||
| InputStream inputStream = url.openStream(); | ||
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| File f = new File("/tmp/test.json"); | ||
| if (f.exists()) | ||
| return f; | ||
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| FileWriter fileWriter = new FileWriter(f); | ||
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| IOUtils.copy(inputStream, fileWriter, StandardCharsets.UTF_8); | ||
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| return f; | ||
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| } catch (IOException e) { | ||
| // TODO Auto-generated catch block | ||
| e.printStackTrace(); | ||
| throw new RuntimeException("unable to read the file"); | ||
| } | ||
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| } | ||
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| private static Map<String,String> cachedName2Url = null; | ||
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| public static Map<String,String> fetchListOfDataExtracts() { | ||
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| if (cachedName2Url != null) | ||
| return cachedName2Url; | ||
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| GeoJSONDataStoreFactory factory = new GeoJSONDataStoreFactory(); | ||
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| FileDataStore store = null; | ||
| SimpleFeatureIterator it = null; | ||
| try { | ||
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| /*Map<String,?> params = new HashMap<>(); | ||
| params.put(GeoJSONDataStoreFactory.URL_PARAM.key, new URL(URL_INDEX_GEOFABRIK)); | ||
| */ | ||
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| File f = readGeofabrikIndexIntoFile(); | ||
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| store = factory.createDataStore(f); | ||
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| SimpleFeatureCollection features = store.getFeatureSource(store.getTypeNames()[0]).getFeatures(); | ||
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| it = features.features(); | ||
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| Map<String,String> name2url = new HashMap<>(); | ||
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| Map<String,String> id2parent = new HashMap<>(); | ||
| Map<String,String> id2name = new HashMap(); | ||
|
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| // decode features | ||
| while (it.hasNext()) { | ||
| SimpleFeature ft = it.next(); | ||
| String id = ft.getAttribute("id").toString(); | ||
| String name = ft.getAttribute("name").toString(); | ||
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| id2name.put(id, name); | ||
|
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| // find parent (optional) | ||
| String parent = (String) ft.getAttribute("parent"); | ||
| if (parent != null) { | ||
| id2parent.put(id, parent); | ||
| //System.out.println(id+" has for parent "+parent); | ||
| } else { | ||
| //System.out.println(id+" has no parent"); | ||
| } | ||
|
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| // find url | ||
| ObjectNode urls = (ObjectNode)ft.getAttribute("urls"); | ||
| JsonNode nodeShp = urls.findValue("shp"); | ||
| // skip index without shp | ||
| if (nodeShp == null) | ||
| continue; | ||
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| String shp = nodeShp.asText(); | ||
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| name2url.put(id, shp); | ||
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| /* | ||
| System.out.println(ft); | ||
| System.out.println(id); | ||
| System.out.println(name); | ||
| System.out.println(shp); | ||
| System.out.println(); | ||
| */ | ||
| } | ||
|
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| // find parents | ||
| Map<String,String> hierarchy2url = new TreeMap<>(); | ||
| for (String id: name2url.keySet()) { | ||
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| final String url = name2url.get(id); | ||
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| String newId = id2name.get(id); | ||
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| String parent = id2parent.get(id); | ||
| while (parent != null) { | ||
| newId = id2name.get(parent) +"/" + newId; | ||
| id = parent; | ||
| parent = id2parent.get(id); | ||
| } | ||
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| hierarchy2url.put(newId, url); | ||
| } | ||
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| cachedName2Url = Collections.unmodifiableMap(hierarchy2url); | ||
| return cachedName2Url; | ||
|
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| } catch (MalformedURLException e) { | ||
| e.printStackTrace(); | ||
| throw new RuntimeException("The index URL seems corrupted: "+URL_INDEX_GEOFABRIK, e); | ||
| } catch (IOException e) { | ||
| e.printStackTrace(); | ||
| throw new RuntimeException("unable to access the list of data from "+URL_INDEX_GEOFABRIK, e); | ||
| } finally { | ||
| if (it != null) | ||
| it.close(); | ||
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| if (store != null) | ||
| store.dispose(); | ||
|
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| } | ||
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| } | ||
| } |
82 changes: 82 additions & 0 deletions
82
...hiriot/knime/shapefilesaswkt/read/read_from_geofabrik/ReadWKTFromGeofabrikNodeDialog.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2019 EIfER[1] (European Institute for Energy Research). | ||
| * This program and the accompanying materials | ||
| * are made available under the terms of the GNU GENERAL PUBLIC LICENSE | ||
| * which accompanies this distribution, and is available at | ||
| * https://www.gnu.org/licenses/gpl-3.0.html | ||
| * | ||
| * Contributors: | ||
| * Samuel Thiriot - original version and contributions | ||
| *******************************************************************************/ | ||
| package ch.res_ear.samthiriot.knime.shapefilesaswkt.read.read_from_geofabrik; | ||
|
|
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| import java.util.Arrays; | ||
| import java.util.Collection; | ||
| import java.util.LinkedList; | ||
|
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| import org.knime.core.node.defaultnodesettings.DefaultNodeSettingsPane; | ||
| import org.knime.core.node.defaultnodesettings.DialogComponentStringSelection; | ||
| import org.knime.core.node.defaultnodesettings.SettingsModelString; | ||
|
|
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| /** | ||
| * This is an example implementation of the node dialog of the | ||
| * "ReadWKTFromDatabase" node. | ||
| * | ||
| * This node dialog derives from {@link DefaultNodeSettingsPane} which allows | ||
| * creation of a simple dialog with standard components. If you need a more | ||
| * complex dialog please derive directly from | ||
| * {@link org.knime.core.node.NodeDialogPane}. In general, one can create an | ||
| * arbitrary complex dialog using Java Swing. | ||
| * | ||
| * @author Samuel Thiriot | ||
| */ | ||
| public class ReadWKTFromGeofabrikNodeDialog extends DefaultNodeSettingsPane { | ||
|
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|
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| /** | ||
| * New dialog pane for configuring the node. The dialog created here | ||
| * will show up when double clicking on a node in KNIME Analytics Platform. | ||
| */ | ||
| protected ReadWKTFromGeofabrikNodeDialog() { | ||
| super(); | ||
|
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| { | ||
| SettingsModelString m_nameToLoad = new SettingsModelString("name_to_load", "Europe/Germany/Baden-Württemberg/Regierungsbezirk Karlsruhe"); | ||
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| Collection<String> names = GeofabrikUtils.fetchListOfDataExtracts().keySet(); | ||
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| addDialogComponent(new DialogComponentStringSelection( | ||
| m_nameToLoad, | ||
| "Zone to load", | ||
| names | ||
| )); | ||
| } | ||
|
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| { | ||
| SettingsModelString m_layerToLoad = new SettingsModelString( | ||
| "layer_to_load", | ||
| "buildings (Building outlines)"); | ||
|
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| Collection<String> layers = new LinkedList<>(Arrays.asList( | ||
| "buildings (Building outlines)", | ||
| "landuse (Forests, residential areas, industrial areas,...)", | ||
| "natural (Natural features)", | ||
| "places (Cities, towns, suburbs, villages,...)", | ||
| "pofw (Places of worship such as churches, mosques, ...)", | ||
| "pois (Points of Interest)", | ||
| "railways (Railway, subways, light rail, trams, ...)", | ||
| "roads (Roads, tracks, paths, ...)", | ||
| "traffic", | ||
| "transport (Parking lots, petrol (gas) stations, ...)", | ||
| "water (Lakes, ...)", | ||
| "waterways (Rivers, canals, streams, ...)" | ||
| )); | ||
| addDialogComponent(new DialogComponentStringSelection( | ||
| m_layerToLoad, | ||
| "layer to load", | ||
| layers | ||
| )); | ||
| } | ||
| } | ||
| } | ||
|
|
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