issue #75: add tag MNI

CHANGELOG.md

@@ -8,5 +8,5 @@
   690, 692, 852$a (code list), 859, 909, 916, 917, 945, 950, 954, 955, 957, 959, 960,
   961, 962, 963, 964, 966, 968, 970, 975, 976, 979, 980, 985, 990, 992, 996, 997,
   A02, AQN, BGT, BUF, CFI, CNF, DGM, DRT, EST, EXP, FFP, FIN, LAS, LCS, LDO, LEO, LET,
-  MIS
+  MIS, MNI
 

src/main/java/de/gwdg/metadataqa/marc/definition/tags/bltags/TagMNI.java

@@ -0,0 +1,47 @@
+package de.gwdg.metadataqa.marc.definition.tags.bltags;
+
+import de.gwdg.metadataqa.marc.definition.Cardinality;
+import de.gwdg.metadataqa.marc.definition.DataFieldDefinition;
+import de.gwdg.metadataqa.marc.definition.Indicator;
+import de.gwdg.metadataqa.marc.definition.general.validator.ISSNValidator;
+
+/**
+ * Medium-Neutral Identifier
+ */
+public class TagMNI extends DataFieldDefinition {
+
+  private static TagMNI uniqueInstance;
+
+  private TagMNI() {
+    initialize();
+    postCreation();
+  }
+
+  public static TagMNI getInstance() {
+    if (uniqueInstance == null)
+      uniqueInstance = new TagMNI();
+    return uniqueInstance;
+  }
+
+  private void initialize() {
+
+    tag = "MNI";
+    label = "Medium-Neutral Identifier";
+    mqTag = "MediumNeutralIdentifier";
+    cardinality = Cardinality.Nonrepeatable;
+    // descriptionUrl = "https://www.loc.gov/marc/bibliographic/bd037.html";
+    // setCompilanceLevels("O");
+
+    ind1 = new Indicator();
+
+    ind2 = new Indicator();
+
+    setSubfieldsWithCardinality(
+      "a", "Medium-neutral identifier", "NR"
+    );
+
+    getSubfield("a")
+      .setValidator(ISSNValidator.getInstance())
+      .setMqTag("mediumNeutralIdentifier");
+  }
+}

src/test/java/de/gwdg/metadataqa/marc/definition/tags/bltags/TagMNITest.java

@@ -0,0 +1,21 @@
+package de.gwdg.metadataqa.marc.definition.tags.bltags;
+
+import org.junit.Test;
+
+public class TagMNITest extends BLTagTest {
+
+  public TagMNITest() {
+    super(TagMNI.getInstance());
+  }
+
+  @Test
+  public void testValidFields() {
+    validField("a", "0894-069X");
+  }
+
+  @Test
+  public void testInvalidFields() {
+    invalidField("1", "a", "Y");
+    invalidField("e", "20050944");
+  }
+}

src/test/java/de/gwdg/metadataqa/marc/utils/MarcTagListerTest.java

@@ -21,7 +21,7 @@ public void testListTag() {
     List<Class<? extends DataFieldDefinition>> tags = MarcTagLister.listTags();
     assertNotNull(tags);
     assertNotEquals(0, tags.size());
-    assertEquals(383, tags.size());
+    assertEquals(384, tags.size());
     assertEquals("Tag010", tags.get(0).getSimpleName());
     Map<String, Integer> versionCounter = new HashMap<>();
     Map<MarcVersion, Integer> versionCounter2 = new HashMap<>();