com.espertech.esper.common.internal.epl.enummethod.cache

Interface ExpressionResultCacheForDeclaredExprLastValue

All Known Implementing Classes:

ExpressionResultCacheForDeclaredExprLastValueMulti, ExpressionResultCacheForDeclaredExprLastValueNone, ExpressionResultCacheForDeclaredExprLastValueSingle

public interface ExpressionResultCacheForDeclaredExprLastValue

On the level of expression declaration: a) for non-enum evaluation and for enum-evaluation a separate cache b) The cache is keyed by the prototype-node and verified by a events-per-stream (EventBean[]) that is maintained or rewritten.

NOTE: ExpressionResultCacheForDeclaredExprLastValue should not be held onto since the instance returned can be reused.

Field Summary

Fields

Modifier and Type	Field and Description
static EPTypeClass	EPTYPE

Method Summary

Modifier and Type	Method and Description
boolean	cacheEnabled()
ExpressionResultCacheEntryEventBeanArrayAndObj	getDeclaredExpressionLastValue(Object node, EventBean[] eventsPerStream)
void	saveDeclaredExpressionLastValue(Object node, EventBean[] eventsPerStream, Object result)

Field Detail

EPTYPE

static final EPTypeClass EPTYPE

Method Detail

cacheEnabled

boolean cacheEnabled()

getDeclaredExpressionLastValue

ExpressionResultCacheEntryEventBeanArrayAndObj getDeclaredExpressionLastValue(Object node,
                                                                              EventBean[] eventsPerStream)

saveDeclaredExpressionLastValue

void saveDeclaredExpressionLastValue(Object node,
                                     EventBean[] eventsPerStream,
                                     Object result)