ToOne: suggest fix in DbDetachedException message.

greenrobot-team · greenrobot-team · commit ff4e53daffef · 2018-08-06T08:06:11.000+02:00
#516 #412
diff --git a/objectbox-java/src/main/java/io/objectbox/relation/ToOne.java b/objectbox-java/src/main/java/io/objectbox/relation/ToOne.java
@@ -119,7 +119,8 @@ private void ensureBoxes(TARGET target) {
                         boxStore = (BoxStore) boxStoreField.get(target);
                     }
                     if (boxStore == null) {
-                        throw new DbDetachedException("Cannot resolve relation for detached entities");
+                        throw new DbDetachedException("Cannot resolve relation for detached entities, " +
+                                "call box.attach(entity) beforehand.");
                     }
                 }
             } catch (IllegalAccessException e) {

Original file line number	Diff line number	Diff line change
`@@ -119,7 +119,8 @@ private void ensureBoxes(TARGET target) {`
`119`	`119`	`boxStore = (BoxStore) boxStoreField.get(target);`
`120`	`120`	`}`
`121`	`121`	`if (boxStore == null) {`
`122`		`- throw new DbDetachedException("Cannot resolve relation for detached entities");`
	`122`	`+ throw new DbDetachedException("Cannot resolve relation for detached entities, " +`
	`123`	`+ "call box.attach(entity) beforehand.");`
`123`	`124`	`}`
`124`	`125`	`}`
`125`	`126`	`} catch (IllegalAccessException e) {`