# Package org.eclipse.emf.cdo.util

Client utility classes, some common interfaces and exceptions.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  CDOFactory | Creates CDO `objects`.
  CDOUpdatable | Represents facilities that can receive `passive updates`.

- Class Summary
  Class | Description
  --- | ---
  CDOBalancedTree | A utility class that attaches `objects` to a `folder` rooted, balanced tree such that configurable capacities for resources per folder and objects per resource are never exceeded.
  CDOCrossReferenceAdapter | An `ECrossReferenceAdapter` that does instanceof checks of `Notifier` instances in the order `Resource`, `EObject`, and `ResourceSet`.
  CDOLazyContentAdapter | A scalable `content adapter` that uses CDO mechanisms to attach itself to `objects` when they are lazily loaded.
  CDOModificationTrackingAdapter | Maintains the `modified state` of a CDO `resource` with the help of a `transaction handler`.
  CDOURIData | Represents a CDO-specific `URI` in connection-aware format.
  CDOURIUtil | Various static methods that may help with CDO-specific `URIs`.
  CDOUtil | Various static methods that may help in CDO client applications.

- Exception Summary
  Exception | Description
  --- | ---
  CommitConflictException | A `concurrent access exception` that indicates that some of the local modifications are based on old revisions because other transactions have intermittently committed their modifications.
  CommitException | A checked exception being thrown from `CDOUserTransaction.commit()` in case of commit problems such as commit conflicts.
  CommitIntegrityException | A local `data integrity exception` that indicates that the subset of object modifications in a `partial commit` is inconsistent.
  ConcurrentAccessException | A `commit exception` that indicates problems that are caused by concurrent access to the repository.
  ContainmentCycleException | A `concurrent access exception` that indicates an attempt of the local transaction to introduce a containment cycle.
  DanglingIntegrityException | A local `data integrity exception` that indicates the addition of one or more cross references to objects that are not (or no longer) contained in the repository.
  DanglingReferenceException | An unchecked exception being thrown from `CDOUserTransaction.commit()` if the commit `change set` is referencing `objects` that are not contained by any `resource` before the server is contacted.
  DataIntegrityException | A `commit exception` that indicates data integrity problems.
  InvalidObjectException | Exception occurs when an object isn't valid anymore.
  InvalidURIException | An unchecked exception being thrown to indicate problems with the `URI` of a `resource`.
  LegacyModeNotEnabledException | Deprecated As of 4.2 the legacy mode is always enabled.
  LocalCommitConflictException | A `commit conflict exception` that indicates that the transaction has local `conflicts`.
  LockTimeoutException | An unchecked exception being thrown if `locks` could not be `acquired` within the specified timeout period.
  ObjectNotFoundException | Exception occurs when an id doesn't exist on the server.
  OptimisticLockingException | A `concurrent access exception` that indicates that the repository can not acquire optimistic locks for some of the locally modified objects.
  ReadOnlyException | An unchecked exception being thrown if write access to `objects` of a `read-only` view is attempted.
  ReferentialIntegrityException | A `data integrity exception` that indicates an attempt to create stale references.
  ServerException | Deprecated Not used.
  StaleRevisionLockException | An unchecked exception being thrown when attempting to `lock` stale objects.
  UnitIntegrityException | A `data integrity exception` that indicates an attempt to move objects between units.
  ValidationException | A `data integrity exception` indicating that the attempt to commit a transaction was rejected because of violation of server-side validation checks.

## Package org.eclipse.emf.cdo.util Description

Client utility classes, some common interfaces and exceptions.

Copyright (c) 2004-2019 Eike Stepper (Loehne, Germany) and others.
All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html