# Package com.holonplatform.core.query.lock

- Interface Summary
  Interface | Description
  --- | ---
  LockQuery | A query with locking support, which is available through the `LockSupport` API.
  LockQueryAdapter<C extends QueryConfiguration> | Adapter to perform a `LockQuery` `tryLock` operation using the provided `QueryConfiguration`.
  LockSupport<L extends LockSupport<L>> | Provides lock support for suitable `Datastore` operations.

- Enum Summary
  Enum | Description
  --- | ---
  LockMode | Available query lock modes.

- Exception Summary
  Exception | Description
  --- | ---
  LockAcquisitionException | Exception used by Datastore operations indicating a problem acquiring a lock.

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