#1228 - Add support to not generate FK Constraint when @JoinColumn(foreignKey=@ForeignKey(ConstraintMode.NO_CONSTRAINT))

src/test/java/org/tests/ddl/DfkNoneViaJoin.java

@@ -0,0 +1,50 @@
+package org.tests.ddl;
+
+import javax.persistence.ConstraintMode;
+import javax.persistence.Entity;
+import javax.persistence.ForeignKey;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+
+@Entity
+public class DfkNoneViaJoin {
+
+  @Id
+  long id;
+
+  String name;
+
+  @ManyToOne
+  @JoinColumn(name = "one_id", foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
+  DfkOne one;
+
+  public DfkNoneViaJoin(String name, DfkOne one) {
+    this.name = name;
+    this.one = one;
+  }
+
+  public long getId() {
+    return id;
+  }
+
+  public void setId(long id) {
+    this.id = id;
+  }
+
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public DfkOne getOne() {
+    return one;
+  }
+
+  public void setOne(DfkOne one) {
+    this.one = one;
+  }
+}

src/test/java/org/tests/ddl/TestForeignKeyModes.java

@@ -30,6 +30,24 @@ public class TestForeignKeyModes extends BaseTestCase {
   }
 
 
+  @Test
+  public void noneViaJoin() {
+
+    DfkOne one = new DfkOne("one2");
+    Ebean.save(one);
+
+    DfkNoneViaJoin none = new DfkNoneViaJoin("none2", one);
+    Ebean.save(none);
+
+    // fails unless there is no Foreign key ...
+    Ebean.delete(one);
+
+    DfkNoneViaJoin found = Ebean.find(DfkNoneViaJoin.class, none.getId());
+    assertThat(found).isNotNull();
+    // we still reference one ... even though it does not exist anymore
+    assertThat(found.getOne()).isNotNull();
+  }
+
   @Test
   public void setNullOnDelete() {