From ab1d70ef8a349511242a9e492e2c399a50d6b498 Mon Sep 17 00:00:00 2001
From: Luz-Maria Priego <lpriego2003@hotmail.com>
Date: Wed, 28 May 2014 15:42:38 +0000
Subject: [PATCH] LOV service implemented
---
.../align/service/LOVAlignmentService.java | 151 ++++++++++++++++++
1 file changed, 151 insertions(+)
create mode 100644 src/fr/inrialpes/exmo/align/service/LOVAlignmentService.java
diff --git a/src/fr/inrialpes/exmo/align/service/LOVAlignmentService.java b/src/fr/inrialpes/exmo/align/service/LOVAlignmentService.java
new file mode 100644
index 00000000..d9b554d1
--- /dev/null
+++ b/src/fr/inrialpes/exmo/align/service/LOVAlignmentService.java
@@ -0,0 +1,151 @@
+package fr.inrialpes.exmo.align.service;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.Set;
+
+import org.semanticweb.owl.align.AlignmentException;
+import org.semanticweb.owl.align.OntologyNetwork;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+
+import fr.inrialpes.exmo.align.impl.BasicOntologyNetwork;
+
+public class LOVAlignmentService extends AlignmentService{
+
+ private AServProtocolManager manager;
+ public LOVAlignmentService(AServProtocolManager manager) {
+ this.manager = manager;
+ }
+
+ public static JsonObject getJsonObject( String uri ) throws IOException {
+
+ URL url = new URL(uri);
+ HttpURLConnection request = (HttpURLConnection) url.openConnection();
+ request.connect();
+ // Convert to a JSON object to print data
+ JsonParser jp = new JsonParser();
+ //convert the input stream to a json element
+ JsonElement root = jp.parse(new InputStreamReader((InputStream) request.getContent()));
+ JsonObject jsonobject = root.getAsJsonObject();
+ return jsonobject;
+ }
+
+
+ public static BasicOntologyNetwork readLOV( String uri ) throws AlignmentException {
+
+ JsonObject jsonobject;
+ try {
+ jsonobject = getJsonObject(uri);
+ } catch (IOException e) {
+ throw new AlignmentException( "Ontology Network error: unable to create Json Object from ("+uri+")" );
+ }
+
+ /*
+ * lov Structure at May 27th, 2014
+ * using api: http://lov.okfn.org/dataset/lov/api/v1/vocabs
+ * "vocabularies": [
+ * {
+ * "uri", "namespace", "prefix",
+ * "titles": [ {"value", "language", "dataType"} ],
+ * "descriptions": [ {"value", "language", "dataType"} ],
+ * "lastVersionReviewed": {"date", "versionDecimal", "label", "link"}
+ * }
+ * ]
+ * We are getting the ontologies' uri
+ */
+
+ BasicOntologyNetwork on = null;
+ //fetching the ontologies in the network
+ JsonElement ontologynetwork = jsonobject.get("vocabularies");
+ JsonArray array = ontologynetwork.getAsJsonArray();
+ Iterator<JsonElement> itr = array.iterator();
+ on = new BasicOntologyNetwork();
+ while(itr.hasNext()) {
+ JsonElement element = itr.next();
+ JsonObject data = element.getAsJsonObject();
+
+ // main data
+ String ontouri = data.get("uri").isJsonNull() ? null : data.get("uri").getAsString();
+ try {
+ on.addOntology(new URI(ontouri) );
+ } catch (URISyntaxException e) {
+ throw new AlignmentException( "Ontologies must be identified by URIs" );
+ }
+ /* if other information is needed:
+ String namespace = data.get("namespace").isJsonNull() ? null : data.get("namespace").getAsString();
+ String prefix = data.get("prefix").isJsonNull() ? null : data.get("prefix").getAsString();
+
+ // titles
+ JsonArray array_titles = data.get("titles").getAsJsonArray();
+ Iterator<JsonElement> itr_titles = array_titles.iterator();
+ while(itr_titles.hasNext()) {
+ JsonElement titles = itr_titles.next();
+ JsonObject data_titles = titles.getAsJsonObject();
+ String title_value = data_titles.get("value").isJsonNull() ? null : data_titles.get("value").getAsString();
+ String title_language = data_titles.get("language").isJsonNull() ? null : data_titles.get("language").getAsString();
+ String title_dataType = data_titles.get("dataType").isJsonNull() ? null : data_titles.get("dataType").getAsString();
+ }
+
+ // descriptions
+ JsonArray array_descriptions = data.get("descriptions").getAsJsonArray();
+ Iterator<JsonElement> itr_descriptions = array_descriptions.iterator();
+ while(itr_descriptions.hasNext()) {
+ JsonElement descriptions = itr_descriptions.next();
+ JsonObject data_descriptions = descriptions.getAsJsonObject();
+ String descriptions_value = data_descriptions.get("value").isJsonNull() ? null : data_descriptions.get("value").getAsString();
+ String descriptions_language = data_descriptions.get("language").isJsonNull() ? null : data_descriptions.get("language").getAsString();
+ String descriptions_dataType = data_descriptions.get("dataType").isJsonNull() ? null : data_descriptions.get("dataType").getAsString();
+ }
+
+ // descriptions
+ if (!data.get("lastVersionReviewed").isJsonNull()) {
+ JsonObject lastVersionReviewed = data.get("lastVersionReviewed").getAsJsonObject();
+ String lastVersionReviewed_date = lastVersionReviewed.get("date").isJsonNull() ? null : lastVersionReviewed.get("date").getAsString();
+ String lastVersionReviewed_versionDecimal = lastVersionReviewed.get("versionDecimal").isJsonNull() ? null : lastVersionReviewed.get("versionDecimal").getAsString();
+ String lastVersionReviewed_label = lastVersionReviewed.get("label").isJsonNull() ? null : lastVersionReviewed.get("label").getAsString();
+ String lastVersionReviewed_link = lastVersionReviewed.get("link").isJsonNull() ? null : lastVersionReviewed.get("link").getAsString();
+ }
+ */
+ }
+ return on;
+ }
+
+ public void lovServer( ) {
+
+ logger.info("LOVAlignment server running");
+ BasicOntologyNetwork noo1 = new BasicOntologyNetwork();
+ BasicOntologyNetwork noo2 = new BasicOntologyNetwork();
+ String uri = "http://lov.okfn.org/dataset/lov/api/v1/vocabs";
+ Collection<OntologyNetwork> allOntologyNetworks = manager.ontologyNetworks();
+ for ( OntologyNetwork oNetwork : allOntologyNetworks ) {
+ noo1 = (BasicOntologyNetwork) oNetwork;
+ }
+
+ try {
+ noo2 = readLOV (uri);
+ String id = manager.alignmentCache.recordNewNetwork( noo2, true );
+ logger.info("Loading network of ontology (lov) {}",uri);
+ } catch (AlignmentException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ }
+ Set<URI> networkOntology1 = noo1.getOntologies();
+ Set<URI> networkOntology2 = noo2.getOntologies();
+ if( !(networkOntology1.containsAll(networkOntology2) && networkOntology2.containsAll(networkOntology1))) {
+ //update differences
+ logger.info("lov Network has changed {}",uri);
+ }
+
+ }
+}
--
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