# Package org.eclipse.emf.cdo.transaction

package org.eclipse.emf.cdo.transaction
Client concepts for dealing with transactions, distributed transactions and their save points.

Zugehörige Packages
Package
Beschreibung
org.eclipse.emf.cdo
Client concepts like `CDOObject` and `CDOState`.
Klasse
Beschreibung
CDOAsyncTransactionHandler
Asynchronously executes a delegate handler's pre-event methods.
CDOAutoAttacher
A `transaction handler` that automatically attaches cross-referenced objects to the `resource` that contains the referencing `object`.
CDOAutoCommitter
A `transaction handler` that automatically `commits` the `transaction` after an `object` was modified.
CDOAutoLocker
A `transaction handler` that automatically acquires `write locks` when `objects` are modified.
CDOAutoLocker.ForSingleValuedChanges
An `auto locker` that only locks objects when their single-valued features are changed.
CDOCommitContext
Provides a context for commit operations.
CDOConflictResolver
A strategy used to customize the default conflict resolution behavior of `transactions`.
CDOConflictResolver.NonConflictAware
A mix-in interface for `conflict resolvers` that need to know about non-conflicting invalidations.
CDOConflictResolver2
A strategy used to customize the default conflict resolution behavior of `transactions`.
CDOConflictResolver3
A strategy used to customize the default conflict resolution behavior of `transactions`.
CDODefaultTransactionHandler
An empty default implementation of `CDOTransactionHandler1` and `CDOTransactionHandler2`.
CDODefaultTransactionHandler1
An empty default implementation of `CDOTransactionHandler1`.
CDODefaultTransactionHandler2
An empty default implementation of `CDOTransactionHandler2`.
CDODefaultTransactionHandler3
An empty default implementation of `CDOTransactionHandler3`.
CDOMerger
Calculates the changes between a source `change set` and a target `change set` and returns the result relative to their common ancestor.
CDOMerger.ConflictException
Thrown from a `merger` in case of conflicting changes in the a source and target `change sets`.
CDOMerger2
Merges the changes between a local `transaction` and a remote `view` into the local transaction.
CDOPostEventTransactionHandler
An abstract call-back class that is called by a `transcation` after `objects` have been attached, modified or detached.
CDOPostEventTransactionHandler.Default
An empty default implementation of `CDOPostEventTransactionHandler`.
CDOPushTransaction
A `transaction` that persists changes to the object graph locally on commit and can later load these changes and push them to the `repository`.
CDOSavepoint
One in a sequence of possibly several points in time of a `transaction` that encapsulates the changes to transactional objects and that later changes can be `rolled back` to.
CDOStaleReferenceCleaner
Interface to externalize the cleaning of stale references created on invalidation.
CDOStaleReferenceCleaner.Default
A default `CDOStaleReferenceCleaner` that can be used on invalidation.
CDOTransaction
A read-write view to the current (i.e.
CDOTransaction.CommitResult<T>
A value type that combines the result of a persistable computation and the `commit info` of the final `transaction commit`.
CDOTransaction.Options
Encapsulates a set of notifying `transaction` configuration options.
CDOTransaction.Options.AttachedRevisionsMap
An `options event` fired from transaction `options` when the `attached revisions map` option has changed.
CDOTransaction.Options.AutoReleaseLocksEvent
An `options event` fired from transaction `options` when the `auto release locks enabled` or `auto release locks exemptions` options have changed.
CDOTransaction.Options.AutoReleaseLocksEvent.AutoReleaseLocksEnabledEvent
An `auto release locks options event` fired from transaction `options` when the `auto release locks enabled` option has changed.
CDOTransaction.Options.AutoReleaseLocksEvent.AutoReleaseLocksExemptionsEvent
An `auto release locks options event` fired from transaction `options` when the `auto release locks exemptions` option has changed.
CDOTransaction.Options.CommitInfoTimeout
An `options event` fired from transaction `options` when the `commit info timeout` option has changed.
CDOTransaction.Options.ConflictResolversEvent
An `options event` fired from transaction `options` when the `conflict resolvers` option has changed.
CDOTransaction.Options.OptimisticLockingTimeout
An `options event` fired from transaction `options` when the `optimistic locking timeout` option has changed.
CDOTransaction.Options.StaleReferenceCleanerEvent
An `options event` fired from transaction `options` when the `stale reference cleaner` option has changed.
CDOTransaction.Options.UndoDetectorEvent
An `options event` fired from transaction `options` when the `undo detector` option has changed.
CDOTransactionCommentator
A utility class that, when associated with a `transaction`, automatically updates the `commit comment` according to local model modifications.
CDOTransactionConflictAddedEvent
A `view event` fired from a `transaction` for each `object` that enters the `conflict` state.
CDOTransactionConflictChangedEvent
A `view event` fired from a `transaction` for each `object` that enters the `conflict` state.
CDOTransactionConflictEvent
Veraltet.
As of 4.19 use `CDOTransactionConflictAddedEvent`.
CDOTransactionConflictRemovedEvent
A `view event` fired from a `transaction` for each `object` that leaves the `conflict` state.
CDOTransactionContainer
Can open new `transactions` and provide access to openend transactions.
CDOTransactionFinishedEvent
A `view event` fired from a `transaction` when it becomes `clean` after a sucessful `commit` or `rollback`.
CDOTransactionFinishedEvent.Cause
Enumerates the possible `causes` for a `transaction` to become finished.
CDOTransactionFinishedEvent.Type
Veraltet.
As of 4.3 use `CDOTransactionFinishedEvent.Cause`.
CDOTransactionHandler
A combination of `CDOTransactionHandler1` and `CDOTransactionHandler2`.
CDOTransactionHandler1
A call-back interface that is called by a `transaction` before `objects` are attached, modified or detached.
CDOTransactionHandler1.WithUndo
A call-back interface that is called by a `transaction` before `objects` are attached, modified, undone or detached.
CDOTransactionHandler2
A call-back interface that is called by a `transcation` before it is committed and after it has been committed or rolled back.
CDOTransactionHandler3
A call-back interface that is called by a `transcation` before it is committed and after it has been committed (with result info) or rolled back.
CDOTransactionHandlerBase
A marker interface for use with `CDOTransaction.addTransactionHandler()` and `CDOTransaction.removeTransactionHandler()`.
CDOTransactionOpener
Can open new `transactions`.
CDOTransactionStartedEvent
A `view event` fired from a `transaction` when it first becomes `dirty`.
CDOUndoDetector
A strategy used to detect whether the feature of an `object` has the original (clean) value after a number of modifications.
CDOUserSavepoint
Creates a save point in a `CDOUserTransaction` that can be used to roll back a part of the transaction.
CDOUserTransaction
Provides functionality that is common to both `single` transactions and `distributed` (XA) transactions.
CDOXASavepoint
Creates a save point in a `CDOXATransaction` that can be used to roll back a part of the transaction.
CDOXATransaction
A distributed (XA) transaction that can atomically commit the changes to multiple `resource sets`, each represented by a registered `view set`.