Uses of Interface
com.espertech.esper.epl.db.DataCache

Packages that use DataCache

Package	Description
com.espertech.esper.epl.core	Contains EPL statement specification classes define the constructs that make up an EPL statement, such as the list of items in the select clause, the insert-into stream name and property names etc.
com.espertech.esper.epl.db	Database SQL polling views and caches
com.espertech.esper.view	View infrastructure concerned with view creation and destroy, cloning and hooking views trees into filtering.

Uses of DataCache in com.espertech.esper.epl.core

Methods in com.espertech.esper.epl.core that return DataCache

Modifier and Type	Method and Description
DataCache	MethodPollingViewable.getOptionalDataCache()

Methods in com.espertech.esper.epl.core that return types with arguments of type DataCache

Modifier and Type	Method and Description
ThreadLocal<DataCache>	MethodPollingViewable.getDataCacheThreadLocal()

Constructors in com.espertech.esper.epl.core with parameters of type DataCache

Constructor and Description
MethodPollingViewable(MethodStreamSpec methodStreamSpec, DataCache dataCache, EventType eventType, ExprEvaluatorContext exprEvaluatorContext, MethodPollingViewableMeta metadata)

Uses of DataCache in com.espertech.esper.epl.db

Classes in com.espertech.esper.epl.db that implement DataCache

Modifier and Type	Class and Description
class	DataCacheClearableMap For use in iteration over historical joins, a DataCache implementation that serves to hold EventBean rows generated during a join evaluation involving historical streams stable for the same cache lookup keys.
class	DataCacheExpiringImpl Implements an expiry-time cache that evicts data when data becomes stale after a given number of seconds.
class	DataCacheLRUImpl Query result data cache implementation that uses a least-recently-used algorithm to store and evict query results.
class	DataCacheNullImpl Null implementation for a data cache that doesn't ever hit.

Methods in com.espertech.esper.epl.db that return DataCache

Modifier and Type	Method and Description
DataCache	DataCacheFactory.getDataCache(ConfigurationDataCache cacheDesc, StatementContext statementContext, EPStatementAgentInstanceHandle epStatementAgentInstanceHandle, SchedulingService schedulingService, ScheduleBucket scheduleBucket, int streamNum) Creates a cache implementation for the strategy as defined by the cache descriptor.
DataCache	DatabaseConfigServiceImpl.getDataCache(String databaseName, StatementContext statementContext, EPStatementAgentInstanceHandle epStatementAgentInstanceHandle, DataCacheFactory dataCacheFactory, int streamNumber)
DataCache	DatabaseConfigService.getDataCache(String databaseName, StatementContext statementContext, EPStatementAgentInstanceHandle epStatementAgentInstanceHandle, DataCacheFactory dataCacheFactory, int streamNumber) Returns a new cache implementation for this database.
DataCache	DatabasePollingViewable.getOptionalDataCache()
protected DataCache	DataCacheFactory.makeTimeCache(ConfigurationExpiryTimeCache expCache, StatementContext statementContext, EPStatementAgentInstanceHandle epStatementAgentInstanceHandle, SchedulingService schedulingService, ScheduleBucket scheduleBucket, int streamNum)

Methods in com.espertech.esper.epl.db that return types with arguments of type DataCache

Modifier and Type	Method and Description
ThreadLocal<DataCache>	DatabasePollingViewable.getDataCacheThreadLocal()

Constructors in com.espertech.esper.epl.db with parameters of type DataCache

Constructor and Description
DatabasePollingViewable(int myStreamNumber, List<String> inputParameters, PollExecStrategy pollExecStrategy, DataCache dataCache, EventType eventType) Ctor.

Uses of DataCache in com.espertech.esper.view

Methods in com.espertech.esper.view that return DataCache

Modifier and Type	Method and Description
DataCache	HistoricalEventViewable.getOptionalDataCache()

Methods in com.espertech.esper.view that return types with arguments of type DataCache

Modifier and Type	Method and Description
ThreadLocal<DataCache>	HistoricalEventViewable.getDataCacheThreadLocal() Historical views are expected to provide a thread-local data cache for use in keeping row (EventBean references) returned during iteration stable, since the concept of a primary key does not exist.