conversion to Dublin Core has been implemented

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/xslt/DataFetcher.java

@@ -3,10 +3,13 @@ package eu.dnetlib.dhp.transformation.xslt;
 import com.mongodb.util.JSON;
 import org.apache.commons.io.IOUtils;
 import org.json.JSONObject;
+import scala.Char;
 
 import java.io.IOException;
 import java.net.URL;
 import java.nio.charset.Charset;
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
 
@@ -27,38 +30,51 @@ public class DataFetcher {
     }
 
     /**
-     * This method extracts authors (contributors) from a given JSON
+     * This method extracts authors from a given JSON
+     *
      * @param jsonObject
      * @return
      */
-    static List<String> getContributorsFromJson(JSONObject jsonObject){
+    static List<String> getAuthorsFromJson(JSONObject jsonObject) {
-        List<String> contributors;
+
+        List<String> authors = new ArrayList<>();
 
         // count of authors
-        int countAuthors = jsonObject.getJSONArray("data").length();
+        int countOfAuthors = jsonObject.getJSONArray("data").length();
 
+        for (int i = 0; i < countOfAuthors; i++) {
 
-//        jsonObject.getJSONArray("data").forEach(json1 -> System.out.println(json1));
+            authors.add(jsonObject
-
+                    .getJSONArray("data")
-
+                    .getJSONObject(i)
-
+                    .getJSONObject("embeds")
-//        String x = testJsonObj
+                    .getJSONObject("users")
-//                .getJSONArray("data")
+                    .getJSONObject("data")
-//                .getJSONObject(0)
+                    .getJSONObject("attributes")
-//                .getJSONObject("embeds")
+                    .getString("full_name"));
-//                .getJSONObject("users")
-//                .getJSONObject("data")
-//                .getJSONObject("attributes")
-//                .getString("full_name");
-
-        return null;
-
 
         }
+        return authors;
+    }
 
+    // transform list of authors into Dublin Core
+    static List<String> transformListToDublinCore(List<String> authors) {
 
-    // transform it into Dublin Core
+        List<String> dublinCoreAuthors = new ArrayList<>();
-    private void transformToDublinCore(JSON jsonData) {
+        for (String author : authors){
-        System.out.println(jsonData);
+
+            //splitting full name into first and last names according to OpenAIRE v3 guidelines at:
+            // https://guidelines.openaire.eu/en/latest/literature/field_creator.html
+            // “surname”, “initials” (“first name”) “prefix”.
+            String[] parts = author.split(" ");
+            String firstName = parts[0];
+            String lastName = parts[1];
+            char initialOfFirstName = firstName.charAt(0);
+
+            dublinCoreAuthors.add(
+                    "<dc:creator>" + lastName + ", " + initialOfFirstName +  ". (" + firstName + ")" + "</dc:creator>");
+
+        }
+        return dublinCoreAuthors;
     }
 }

dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/transformation/xslt/DataFetcherTest.java

@@ -1,18 +1,16 @@
 package eu.dnetlib.dhp.transformation.xslt;
 
-import org.json.JSONArray;
 import org.json.JSONObject;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
+import javax.xml.crypto.Data;
 import java.io.IOException;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URL;
 import java.util.List;
-import java.util.stream.Collectors;
-import java.util.stream.IntStream;
 
 import static org.junit.jupiter.api.Assertions.*;
 
@@ -39,13 +37,19 @@ class DataFetcherTest {
                 .getJSONObject("data")
                 .getJSONObject("attributes")
                 .getString("full_name");
-
         System.out.println(x);
-
         System.out.println(testJsonObj.getJSONArray("data").length());
-
         testJsonObj.getJSONArray("data").forEach(json1 -> System.out.println(json1));
+    }
 
+    @Test
+    void getAuthorsFromJson() throws IOException, URISyntaxException {
+        URL contributorsUrl = new URI("https://api.osf.io/v2/preprints/mrwqb/contributors/?format=json").toURL();
+        JSONObject testJsonObj = DataFetcher.getJson(contributorsUrl);
+        List<String> authors = DataFetcher.getAuthorsFromJson(testJsonObj);
+        System.out.println(authors);
+
+        System.out.println(DataFetcher.transformListToDublinCore(authors));
 
     }
 }