com.espertech.esper.core.service

Interface EPStatementSPI

All Superinterfaces:

EPIterable, EPListenable, EPStatement

All Known Implementing Classes:

EPStatementImpl

public interface EPStatementSPI
extends EPStatement

Statement SPI for statements operations for state transitions and internal management.

Method Summary

Modifier and Type	Method and Description
String	getExpressionNoAnnotations() Returns the statements expression without annotations.
EPStatementListenerSet	getListenerSet() Returns the current set of listeners for read-only operations.
Viewable	getParentView() Returns the parent view.
StatementContext	getStatementContext() Returns the statement context.
int	getStatementId() Returns the statement id.
StatementMetadata	getStatementMetadata() Returns additional metadata about a statement.
boolean	isNameProvided() True if an explicit statement name has been provided, false if the statement name is system-generated.
void	setCurrentState(EPStatementState currentState, long timeLastStateChange) Set statement state.
void	setListeners(EPStatementListenerSet listeners, boolean isRecovery) Sets the statement listeners.
void	setParentView(Viewable viewable) Sets the parent view.
void	setServiceIsolated(String serviceIsolated) Set the statement's isolated service name, or null to clear.

Methods inherited from interface com.espertech.esper.client.EPStatement

addListenerWithReplay, destroy, getAnnotations, getName, getServiceIsolated, getState, getSubscriber, getText, getTimeLastStateChange, getUserObject, isDestroyed, isPattern, isStarted, isStopped, iterator, safeIterator, setSubscriber, setSubscriber, start, stop

Methods inherited from interface com.espertech.esper.client.EPListenable

addListener, addListener, getStatementAwareListeners, getUpdateListeners, removeAllListeners, removeListener, removeListener

Methods inherited from interface com.espertech.esper.client.EPIterable

getEventType, iterator, safeIterator

Method Detail

getStatementId

int getStatementId()

Returns the statement id.

Returns:

statement id

setServiceIsolated

void setServiceIsolated(String serviceIsolated)

Set the statement's isolated service name, or null to clear.

Parameters:

serviceIsolated - name of isolated service

getExpressionNoAnnotations

String getExpressionNoAnnotations()

Returns the statements expression without annotations.

Returns:

expression

getListenerSet

EPStatementListenerSet getListenerSet()

Returns the current set of listeners for read-only operations.

Returns:

listener set

setListeners

void setListeners(EPStatementListenerSet listeners,
                  boolean isRecovery)

Sets the statement listeners.

Care must be taken in the use of this method as unsynchronized modification to the listeners of a statement can yield problems.

Parameters:

listeners - set

isRecovery - whether we are recovering

setCurrentState

void setCurrentState(EPStatementState currentState,
                     long timeLastStateChange)

Set statement state.

Parameters:

currentState - new current state

timeLastStateChange - the timestamp the statement changed state

setParentView

void setParentView(Viewable viewable)

Sets the parent view.

Parameters:

viewable - is the statement viewable

getParentView

Viewable getParentView()

Returns the parent view.

Returns:

viewable is the statement parent viewable

getStatementMetadata

StatementMetadata getStatementMetadata()

Returns additional metadata about a statement.

Returns:

statement metadata

getStatementContext

StatementContext getStatementContext()

Returns the statement context.

Returns:

statement context

isNameProvided

boolean isNameProvided()

True if an explicit statement name has been provided, false if the statement name is system-generated.

Returns:

indicator if statement name exists