diff -r 18613f052d56 -r 76da86cf9696 common/corpus-common-addon/addon/utils/utils.js
--- a/common/corpus-common-addon/addon/utils/utils.js	Wed Jan 18 11:33:56 2017 +0100
+++ b/common/corpus-common-addon/addon/utils/utils.js	Thu Jan 19 13:53:17 2017 +0100
@@ -75,3 +75,36 @@
 
   return constants.NOID_CHARS[sum % constants.NOID_CHARS.length];
 }
+
+export function getOLACBaseUrl(literalVal) {
+  let olacRes = null;
+
+  if (!literalVal) {
+    return null;
+  }
+  if (typeof literalVal !== 'object') {
+    return null;
+  }
+  const datatype = literalVal.datatype;
+
+  if (!datatype) {
+    return null;
+  }
+
+  _.forEach(constants.OLAC_BASE_URL, function (olacDef, urlPrefix) {
+    if (_.startsWith(datatype, urlPrefix)) {
+      olacRes = olacDef;
+      return false; // we found it, we exit early
+    }
+
+    return true;
+  });
+
+  return olacRes;
+}
+
+export function isOLACLiteral(literalDef) {
+  const olacDef = getOLACBaseUrl(literalDef);
+
+  return Boolean(olacDef);
+}