com.holonplatform.core.query.lock

Interface LockQuery

All Superinterfaces:

DatastoreCommodity, DataTarget.DataTargetSupport<LockQuery>, ExpressionResolver.ExpressionResolverBuilder<LockQuery>, LockSupport<LockQuery>, QueryAggregation.QueryAggregationSupport<LockQuery>, QueryBuilder<LockQuery>, QueryFilter.QueryFilterSupport<LockQuery>, QueryProjectionOperations<Stream,List,Optional,Long>, QueryResults, QuerySort.QuerySortSupport<LockQuery>, Serializable

public interface LockQuery
extends QueryBuilder<LockQuery>, QueryResults, DatastoreCommodity, LockSupport<LockQuery>

A query with locking support, which is available through the LockSupport API.

Since:

5.2.0

See Also:

LockSupport

Nested Class Summary

Nested classes/interfaces inherited from interface com.holonplatform.core.query.QueryResults

QueryResults.QueryNonUniqueResultException

Method Summary

Modifier and Type	Method and Description
<R> Stream<R>	stream(QueryProjection<R> projection) Execute query and get a Stream of query results using given projection to map results to required type.

Methods inherited from interface com.holonplatform.core.query.QueryBuilder

distinct, getQueryConfiguration, limit, offset, parameter, parameter, restrict

Methods inherited from interface com.holonplatform.core.query.QueryFilter.QueryFilterSupport

filter, filter, filter

Methods inherited from interface com.holonplatform.core.query.QuerySort.QuerySortSupport

sort, sort, sort

Methods inherited from interface com.holonplatform.core.datastore.DataTarget.DataTargetSupport

target, target

Methods inherited from interface com.holonplatform.core.query.QueryAggregation.QueryAggregationSupport

aggregate, aggregate, aggregate

Methods inherited from interface com.holonplatform.core.ExpressionResolver.ExpressionResolverBuilder

withExpressionResolver

Methods inherited from interface com.holonplatform.core.query.QueryResults

count, countAll, findOne, findOne, findOne, list, list, list, stream, stream

Methods inherited from interface com.holonplatform.core.query.lock.LockSupport

lock, lock, lock, lock, tryLock, tryLock, tryLock, tryLock

Method Detail

stream

<R> Stream<R> stream(QueryProjection<R> projection)

Execute query and get a Stream of query results using given projection to map results to required type.

Specified by:

stream in interface QueryProjectionOperations<Stream,List,Optional,Long>

Specified by:

stream in interface QueryResults

Type Parameters:

R - Results type

Parameters:

projection - Query projection (not null)

Returns:

Query results stream, an empty Stream if none

Throws:

LockAcquisitionException - If a lock mode was configured and the lock can't be acquired

DataAccessException - Error in query execution