Class DeleteRule

java.lang.Object
org.apache.cayenne.map.DeleteRule

public class DeleteRule
extends Object
Defines constants for the possible values of ObjRelationship delete rules.
  • Field Summary

    Fields
    Modifier and Type Field Description
    static int CASCADE
    Delete the destination object(s)
    static int DEFAULT_DELETE_RULE_TO_MANY
    Default delete rule for one-to-many relationships.
    static int DEFAULT_DELETE_RULE_TO_ONE
    Default delete rule for many-to-one relationships.
    static int DENY
    If the relationship has any objects (toOne or toMany), deny the delete.
    static int NO_ACTION  
    static int NULLIFY
    Remove the reference that the destination has to this source (if the inverse relationship is toOne, nullify, if toMany, remove the source object)
  • Constructor Summary

    Constructors
    Constructor Description
    DeleteRule()  
  • Method Summary

    Modifier and Type Method Description
    static int deleteRuleForName​(String name)
    Translates a possible delete rule name (typically returned from deleteRuleName at some stage), into a deleteRule constant
    static String deleteRuleName​(int deleteRule)
    Returns String label for a delete rule state.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  • Field Details

    • NO_ACTION

      public static final int NO_ACTION
      See Also:
      Constant Field Values
    • NULLIFY

      public static final int NULLIFY
      Remove the reference that the destination has to this source (if the inverse relationship is toOne, nullify, if toMany, remove the source object)
      See Also:
      Constant Field Values
    • CASCADE

      public static final int CASCADE
      Delete the destination object(s)
      See Also:
      Constant Field Values
    • DENY

      public static final int DENY
      If the relationship has any objects (toOne or toMany), deny the delete. (Destination objects would therefore have to be deleted manually first)
      See Also:
      Constant Field Values
    • DEFAULT_DELETE_RULE_TO_MANY

      public static final int DEFAULT_DELETE_RULE_TO_MANY
      Default delete rule for one-to-many relationships. It is used when new rels are created via modeler, or when synchrozining Obj- and DbEntities
      See Also:
      Constant Field Values
    • DEFAULT_DELETE_RULE_TO_ONE

      public static final int DEFAULT_DELETE_RULE_TO_ONE
      Default delete rule for many-to-one relationships. It is used when new rels are created via modeler, or when synchrozining Obj- and DbEntities
      See Also:
      Constant Field Values
  • Constructor Details

    • DeleteRule

      public DeleteRule()
  • Method Details

    • deleteRuleName

      public static String deleteRuleName​(int deleteRule)
      Returns String label for a delete rule state. Used for save/load (xml), display in modeler etc. Must remain the same, or else great care taken with loading old maps.
    • deleteRuleForName

      public static int deleteRuleForName​(String name)
      Translates a possible delete rule name (typically returned from deleteRuleName at some stage), into a deleteRule constant