Package org.apache.openjpa.util

Class Id

java.lang.Object

org.apache.openjpa.util.OpenJPAId

org.apache.openjpa.util.Id

All Implemented Interfaces:

Serializable, Comparable

public final class Id
extends OpenJPAId

Datastore identity type. Implementations may choose to use this type, or choose to use their own datastore identity values.

Author:

Abe White

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.openjpa.util.OpenJPAId

subs, type, TYPE_VALUE_SEP

Constructor Summary

Constructors

Constructor	Description
Id(Class cls, long key)	Construct from key value.
Id(Class cls, long key, boolean subs)	Construct from key value.
Id(Class cls, Long key)	Construct from key value.
Id(Class cls, String key)	Construct from the result of a OpenJPAId.toString() call on another instance.
Id(String str)	Create an id from the result of a OpenJPAId.toString() call on another instance.
Id(String str, ClassLoader loader)	Create an id from the result of an OpenJPAId.toString() call on another instance.
Id(String str, OpenJPAConfiguration conf, ClassLoader brokerLoader)	Create an id from the result of an OpenJPAId.toString() call on another instance.

Method Summary

Modifier and Type	Method	Description
long	getId()	Primary key.
Object	getIdObject()	Return the identity value as an object.
protected boolean	idEquals(OpenJPAId other)	Compare the id to the id of the given instance.
protected int	idHash()	Return the id's hash code.
static Id	newInstance(Class cls, Object val)	Create an id from the given type and value; the value might be an id instance, a stringified id, or a primary key value.

Methods inherited from class org.apache.openjpa.util.OpenJPAId

compareTo, equals, getType, hashCode, hasSubclasses, setManagedInstanceType, setManagedInstanceType, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Id

public Id(String str)

Create an id from the result of a OpenJPAId.toString() call on another instance.

Id

public Id(String str,
          OpenJPAConfiguration conf,
          ClassLoader brokerLoader)

Create an id from the result of an OpenJPAId.toString() call on another instance.

Id

public Id(String str,
          ClassLoader loader)

Create an id from the result of an OpenJPAId.toString() call on another instance.

Id

public Id(Class cls,
          String key)

Construct from the result of a OpenJPAId.toString() call on another instance.

Id

public Id(Class cls,
          Long key)

Construct from key value.

Id

public Id(Class cls,
          long key)

Construct from key value.

Id

public Id(Class cls,
          long key,
          boolean subs)

Construct from key value.

Method Detail

newInstance

public static Id newInstance(Class cls,
                             Object val)

Create an id from the given type and value; the value might be an id instance, a stringified id, or a primary key value.

getId

public long getId()

Primary key.

getIdObject

public Object getIdObject()

Description copied from class: OpenJPAId

Return the identity value as an object.

Specified by:

getIdObject in class OpenJPAId

idHash

protected int idHash()

Description copied from class: OpenJPAId

Return the id's hash code.

Specified by:

idHash in class OpenJPAId

idEquals

protected boolean idEquals(OpenJPAId other)

Description copied from class: OpenJPAId

Compare the id to the id of the given instance.

Specified by:

idEquals in class OpenJPAId