NonUniqueResultException

Author: greenrobot

objectbox-java/src/main/java/io/objectbox/exception/NonUniqueResultException.java

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2018 ObjectBox Ltd. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.objectbox.exception;
+
+/** Throw if {@link io.objectbox.query.Query#findUnique()} returns more than one result. */
+public class NonUniqueResultException extends DbException {
+    public NonUniqueResultException(String message) {
+        super(message);
+    }
+}

objectbox-java/src/main/java/io/objectbox/query/Query.java

@@ -169,7 +169,7 @@ private void ensureNoComparator() {
     /**
      * Find the unique Object matching the query.
      *
-     * @throws io.objectbox.exception.DbException if result was not unique
+     * @throws io.objectbox.exception.NonUniqueResultException if result was not unique
      */
     @Nullable
     public T findUnique() {

tests/objectbox-java-test/src/test/java/io/objectbox/query/QueryTest.java

@@ -33,8 +33,8 @@
 import io.objectbox.TestEntity;
 import io.objectbox.TestEntity_;
 import io.objectbox.TxCallback;
-import io.objectbox.exception.DbException;
 import io.objectbox.exception.DbExceptionListener;
+import io.objectbox.exception.NonUniqueResultException;
 import io.objectbox.query.QueryBuilder.StringOrder;
 import io.objectbox.relation.MyObjectBox;
 import io.objectbox.relation.Order;
@@ -720,7 +720,7 @@ public void onDbException(Exception e) {
         try {
             query.findUnique();
             fail("Should have thrown");
-        } catch (DbException e) {
+        } catch (NonUniqueResultException e) {
             assertSame(e, exs[0]);
         }
     }