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

src/main/java/io/ebeaninternal/server/deploy/PropertyForeignKey.java

@@ -10,6 +10,19 @@ public class PropertyForeignKey {
   private final ConstraintMode onDelete;
   private final ConstraintMode onUpdate;
 
+  /**
+   * Construct for "No Constraint".
+   */
+  public PropertyForeignKey() {
+    this.noConstraint = true;
+    this.noIndex = false;
+    this.onDelete = ConstraintMode.GLOBAL_DEFAULT;
+    this.onUpdate = ConstraintMode.GLOBAL_DEFAULT;
+  }
+
+  /**
+   * Construct for the mapping annotation.
+   */
   public PropertyForeignKey(DbForeignKey dbForeignKey) {
     this.noIndex = dbForeignKey.noIndex();
     this.noConstraint = dbForeignKey.noConstraint();

src/main/java/io/ebeaninternal/server/deploy/parse/AnnotationAssocOnes.java

@@ -16,8 +16,10 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import javax.persistence.Column;
+import javax.persistence.ConstraintMode;
 import javax.persistence.Embedded;
 import javax.persistence.EmbeddedId;
+import javax.persistence.ForeignKey;
 import javax.persistence.Id;
 import javax.persistence.JoinColumn;
 import javax.persistence.JoinTable;
@@ -131,6 +133,7 @@ public class AnnotationAssocOnes extends AnnotationParser {
       if (!joinColumn.nullable()) {
         prop.setNullable(false);
       }
+      checkForNoConstraint(prop, joinColumn);
     }
 
 
@@ -171,6 +174,13 @@ public class AnnotationAssocOnes extends AnnotationParser {
     }
   }
 
+  private void checkForNoConstraint(DeployBeanPropertyAssocOne<?> prop, JoinColumn joinColumn) {
+    ForeignKey foreignKey = joinColumn.foreignKey();
+    if (foreignKey != null && foreignKey.value() == ConstraintMode.NO_CONSTRAINT) {
+      prop.setForeignKey(new PropertyForeignKey());
+    }
+  }
+
   private String errorMsgMissingBeanTable(Class<?> type, String from) {
     return "Error with association to [" + type + "] from [" + from + "]. Is " + type + " registered?";
   }