issue #75: add tag 917

src/main/java/de/gwdg/metadataqa/marc/definition/tags/bltags/Tag917.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.RegexValidator;
+
+/**
+ * Production Category
+ */
+public class Tag917 extends DataFieldDefinition {
+
+  private static Tag917 uniqueInstance;
+
+  private Tag917() {
+    initialize();
+    postCreation();
+  }
+
+  public static Tag917 getInstance() {
+    if (uniqueInstance == null)
+      uniqueInstance = new Tag917();
+    return uniqueInstance;
+  }
+
+  private void initialize() {
+
+    tag = "917";
+    label = "Production Category";
+    mqTag = "productionCategory";
+    cardinality = Cardinality.Nonrepeatable;
+    // descriptionUrl = "https://www.loc.gov/marc/bibliographic/bd037.html";
+    // setCompilanceLevels("O");
+
+    ind1 = new Indicator();
+
+    ind2 = new Indicator();
+
+    setSubfieldsWithCardinality(
+      "a", "Production Category", "NR"
+    );
+
+    getSubfield("a")
+      .setValidator(new RegexValidator("^.*[^\\.]$"))
+      .setMqTag("category");
+  }
+}

src/test/java/de/gwdg/metadataqa/marc/definition/tags/bltags/Tag917Test.java

@@ -0,0 +1,21 @@
+package de.gwdg.metadataqa.marc.definition.tags.bltags;
+
+import org.junit.Test;
+
+public class Tag917Test extends BLTagTest {
+
+  public Tag917Test() {
+    super(Tag917.getInstance());
+  }
+
+  @Test
+  public void testValidFields() {
+    validField("a", "Priority processing");
+  }
+
+  @Test
+  public void testInvalidFields() {
+    invalidField("1", "a", "Priority processing");
+    invalidField("b", "Priority processing");
+  }
+}