org.apache.openjpa.util
Class ApplicationIds

java.lang.Object
  org.apache.openjpa.util.ApplicationIds

public class ApplicationIds
extends Object

Utility class for manipulating application object ids.

Author:

Abe White

Constructor Summary

ApplicationIds()

Method Summary

static boolean	assign(OpenJPAStateManager sm, StoreManager store, boolean preFlush) Assign an application identity object to the given state, or return false if determining the application identity requires a flush.
static Object	copy(Object oid, ClassMetaData meta) Copy the given oid value.
static Object	create(PersistenceCapable pc, ClassMetaData meta) Generate an application id based on the current primary key field state of the given instance.
static Object	fromPKValues(Object[] pks, ClassMetaData meta) Return a new object id constructed from the given primary key values.
static Object	get(Object oid, FieldMetaData fmd) Return the given primary key field value from the given oid.
static Object[]	toPKValues(Object oid, ClassMetaData meta) Return the primary key values for the given object id.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ApplicationIds

public ApplicationIds()

Method Detail

toPKValues

public static Object[] toPKValues(Object oid,
                                  ClassMetaData meta)

Return the primary key values for the given object id. The values will be returned in the same order as the metadata primary key fields. Values for PC primary key fields will be the primarky key value or oid value of the related instance (depending on FieldMetaData#isObjectIdFieldIdOfPC).

fromPKValues

public static Object fromPKValues(Object[] pks,
                                  ClassMetaData meta)

Return a new object id constructed from the given primary key values. Values for PC primary key fields should be the primarky key value or oid value of the related instance (depending on FieldMetaData#isObjectIdFieldIdOfPC).

copy

public static Object copy(Object oid,
                          ClassMetaData meta)

Copy the given oid value.

get

public static Object get(Object oid,
                         FieldMetaData fmd)

Return the given primary key field value from the given oid.

create

public static Object create(PersistenceCapable pc,
                            ClassMetaData meta)

Generate an application id based on the current primary key field state of the given instance.

assign

public static boolean assign(OpenJPAStateManager sm,
                             StoreManager store,
                             boolean preFlush)

Assign an application identity object to the given state, or return false if determining the application identity requires a flush.