com.goldencode.p2j.persist.orm

Class UniqueTracker.Token

java.lang.Object

com.goldencode.p2j.persist.orm.UniqueTracker.Token

Enclosing class:

UniqueTracker

public static class UniqueTracker.Token
extends java.lang.Object

An object which holds information about the set of UniqueIndex objects locked and updated by an operation on a particular UniqueTracker instance. A token is created by UniqueTracker.lockAndChange(com.goldencode.p2j.persist.orm.BaseRecord, com.goldencode.p2j.persist.orm.UniqueTracker.Context, java.lang.String, boolean) or UniqueTracker.lockAndDelete(BaseRecord, Context), and must subsequently be passed to UniqueTracker.unlock(Token) or UniqueTracker.rollbackChange(Token). The latter method uses the token to roll back the changes made in an update or delete operation. Both methods use the token to unlock any locked UniqueIndex instances.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.List<org.apache.commons.lang3.tuple.Pair<java.lang.Integer,UniqueTracker.UniqueIndex.Key>>	affected Pairs of UniqueIndex offsets and old Key values
private java.lang.Long	id Primary key of record indexed by a unit of work

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Token(long id, java.util.List<org.apache.commons.lang3.tuple.Pair<java.lang.Integer,UniqueTracker.UniqueIndex.Key>> affected) Constructor.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

id

private final java.lang.Long id

Primary key of record indexed by a unit of work

affected

private final java.util.List<org.apache.commons.lang3.tuple.Pair<java.lang.Integer,UniqueTracker.UniqueIndex.Key>> affected

Pairs of UniqueIndex offsets and old Key values

Constructor Detail

Token

private Token(long id,
              java.util.List<org.apache.commons.lang3.tuple.Pair<java.lang.Integer,UniqueTracker.UniqueIndex.Key>> affected)

Constructor.

Parameters:

id - Primary key of the record involved in the operation described by this token.

affected - Pairs of UniqueIndex offsets in their array within the tracker, and Key instances which were affected by the operation.