org.wso2.siddhi.core.util.snapshot

Interface Snapshotable

All Known Implementing Classes:

AbstractAggregationAttributeExecutor, AbstractStreamProcessor, AggregationAttributeExecutor, AllPerEventOutputRateLimiter, AllPerTimeOutputRateLimiter, AttributeAggregator, AvgAttributeAggregator, CastFunctionExecutor, CoalesceFunctionExecutor, ConvertFunctionExecutor, CountAttributeAggregator, CountPreStateProcessor, CronWindowProcessor, DistinctcountAttributeAggregator, EventTimeBasedScheduler, EventWindow, ExternalTimeBatchWindowProcessor, ExternalTimeWindowProcessor, FirstGroupByPerEventOutputRateLimiter, FirstGroupByPerTimeOutputRateLimiter, FirstPerEventOutputRateLimiter, FirstPerTimeOutputRateLimiter, FirstUniqueWindowProcessor, FrequentWindowProcessor, FunctionExecutor, GroupByAggregationAttributeExecutor, IfThenElseFunctionExecutor, InMemoryEventTable, InstanceOfBooleanFunctionExecutor, InstanceOfDoubleFunctionExecutor, InstanceOfFloatFunctionExecutor, InstanceOfIntegerFunctionExecutor, InstanceOfLongFunctionExecutor, InstanceOfStringFunctionExecutor, LastGroupByPerEventOutputRateLimiter, LastGroupByPerTimeOutputRateLimiter, LastPerEventOutputRateLimiter, LastPerTimeOutputRateLimiter, LengthBatchWindowProcessor, LengthWindowProcessor, LogicalPreStateProcessor, LogStreamProcessor, LossyFrequentWindowProcessor, MaxAttributeAggregator, MaxForeverAttributeAggregator, MaximumFunctionExecutor, MinAttributeAggregator, MinForeverAttributeAggregator, MinimumFunctionExecutor, OutputRateLimiter, PartitionRuntime, PassThroughOutputRateLimiter, Pol2CartStreamFunctionProcessor, Scheduler, ScriptFunctionExecutor, SortWindowProcessor, StddevAttributeAggregator, StreamFunctionProcessor, StreamPreStateProcessor, StreamProcessor, SumAttributeAggregator, SystemTimeBasedScheduler, TableWindowProcessor, TimeBatchWindowProcessor, TimeLengthWindowProcessor, TimeWindowProcessor, UniqueExternalTimeBatchWindowProcessor, UniqueWindowProcessor, UUIDFunctionExecutor, WindowProcessor, WindowWindowProcessor, WrappedSnapshotOutputRateLimiter

public interface Snapshotable

Method Summary

Modifier and Type	Method and Description
Object[]	currentState() Used to collect the serializable state of the processing element, that need to be persisted for the reconstructing the element to the same state on a different point of time
String	getElementId()
void	restoreState(Object[] state) Used to restore serialized state of the processing element, for reconstructing the element to the same state as if was on a previous point of time.

Method Detail

currentState

Object[] currentState()

Used to collect the serializable state of the processing element, that need to be persisted for the reconstructing the element to the same state on a different point of time

Returns:

stateful objects of the processing element as an array

restoreState

void restoreState(Object[] state)

Used to restore serialized state of the processing element, for reconstructing the element to the same state as if was on a previous point of time.

Parameters:

state - the stateful objects of the element as an array on the same order provided by currentState().

getElementId

String getElementId()