getAgency moved from DOI to DoiFetcher

src/main/java/org/jabref/logic/importer/fetcher/DoiFetcher.java

@@ -25,7 +25,9 @@
 import org.jabref.model.util.DummyFileUpdateMonitor;
 import org.jabref.model.util.OptionalUtil;
 
+import kong.unirest.json.JSONArray;
 import kong.unirest.json.JSONException;
+import kong.unirest.json.JSONObject;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -59,7 +61,7 @@ public Optional<BibEntry> performSearchById(String identifier) throws FetcherExc
                 Optional<BibEntry> fetchedEntry;
 
                 // mEDRA does not return a parsable bibtex string
-                if (doi.get().getAgency().isPresent() && "medra".equalsIgnoreCase(doi.get().getAgency().get())) {
+                if (getAgency(doi.get()).isPresent() && "medra".equalsIgnoreCase(getAgency(doi.get()).get())) {
                     return new Medra().performSearchById(identifier);
                 }
 
@@ -102,4 +104,25 @@ public List<BibEntry> performSearch(BibEntry entry) throws FetcherException {
         }
     }
 
+    /**
+     * Returns registration agency. Optional.empty() if no agency is found.
+     *
+     * @param doi the DOI to be searched
+     */
+    public Optional<String> getAgency(DOI doi) throws IOException {
+        Optional<String> agency = Optional.empty();
+        try {
+            URLDownload download = getUrlDownload(new URL(DOI.AGENCY_RESOLVER + "/" + doi.getDOI()));
+            JSONObject response = new JSONArray(download.asString()).getJSONObject(0);
+            if (response != null) {
+                agency = Optional.ofNullable(response.optString("RA"));
+            }
+        } catch (JSONException e) {
+            LOGGER.error("Cannot parse agency fetcher repsonse to JSON");
+            return Optional.empty();
+        }
+
+        return agency;
+    }
+
 }

src/main/java/org/jabref/model/entry/identifier/DOI.java

@@ -1,22 +1,16 @@
 package org.jabref.model.entry.identifier;
 
-import java.io.IOException;
 import java.net.URI;
 import java.net.URISyntaxException;
-import java.net.URL;
 import java.util.Locale;
 import java.util.Objects;
 import java.util.Optional;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-import org.jabref.logic.net.URLDownload;
 import org.jabref.model.entry.field.Field;
 import org.jabref.model.entry.field.StandardField;
 
-import kong.unirest.json.JSONArray;
-import kong.unirest.json.JSONException;
-import kong.unirest.json.JSONObject;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -260,22 +254,4 @@ public int hashCode() {
         return Objects.hash(doi.toLowerCase(Locale.ENGLISH));
     }
 
-    /**
-     * Returns registration agency. Optional.empty() if no agency is found.
-     */
-    public Optional<String> getAgency() throws IOException {
-        Optional<String> agency = Optional.empty();
-        try {
-            URLDownload download = new URLDownload(new URL(DOI.AGENCY_RESOLVER + "/" + doi));
-            JSONObject response = new JSONArray(download.asString()).getJSONObject(0);
-            if (response != null) {
-                agency = Optional.ofNullable(response.optString("RA"));
-            }
-        } catch (JSONException e) {
-            LOGGER.error("Cannot parse agency fetcher repsonse to JSON");
-            return Optional.empty();
-        }
-
-        return agency;
-    }
 }