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java.lang.Objectcom.espertech.esper.epl.agg.service.AggregationServiceBaseGrouped
com.espertech.esper.epl.agg.service.AggSvcGroupByReclaimAgedImpl
public class AggSvcGroupByReclaimAgedImpl
Implementation for handling aggregation with grouping by group-keys.
Field Summary | |
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protected AggregationStateFactory[] |
accessAggregations
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protected java.util.Map<java.lang.Object,AggregationMethodRowAged> |
aggregatorsPerGroup
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protected boolean |
isJoin
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Fields inherited from class com.espertech.esper.epl.agg.service.AggregationServiceBaseGrouped |
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aggregators, evaluators, groupKeyBinding |
Constructor Summary | |
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AggSvcGroupByReclaimAgedImpl(ExprEvaluator[] evaluators,
AggregationMethodFactory[] aggregators,
java.lang.Object groupKeyBinding,
AggregationAccessorSlotPair[] accessors,
AggregationStateFactory[] accessAggregations,
boolean join,
AggSvcGroupByReclaimAgedEvalFunc evaluationFunctionMaxAge,
AggSvcGroupByReclaimAgedEvalFunc evaluationFunctionFrequency,
MethodResolutionService methodResolutionService)
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Method Summary | |
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void |
accept(AggregationServiceVisitor visitor)
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void |
acceptGroupDetail(AggregationServiceVisitorWGroupDetail visitor)
|
void |
applyEnter(EventBean[] eventsPerStream,
java.lang.Object groupByKey,
ExprEvaluatorContext exprEvaluatorContext)
Apply events as entering a window (new events). |
void |
applyLeave(EventBean[] eventsPerStream,
java.lang.Object groupByKey,
ExprEvaluatorContext exprEvaluatorContext)
Apply events as leaving a window (old events). |
void |
clearResults(ExprEvaluatorContext exprEvaluatorContext)
Clear current aggregation state. |
java.util.Collection<EventBean> |
getCollection(int column,
ExprEvaluatorContext context)
|
EventBean |
getEventBean(int column,
ExprEvaluatorContext context)
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java.lang.Object |
getGroupKey(int agentInstanceId)
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java.util.Collection<java.lang.Object> |
getGroupKeys(ExprEvaluatorContext exprEvaluatorContext)
|
java.lang.Object |
getValue(int column,
int agentInstanceId)
Returns current aggregation state, for use by expression node representing an aggregation function. |
protected void |
handleRemovedKeys()
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void |
internalHandleRemoved(java.lang.Object key)
|
void |
internalHandleUpdated(java.lang.Object groupByKey,
AggregationMethodRowAged row)
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boolean |
isGrouped()
|
void |
setCurrentAccess(java.lang.Object groupByKey,
int agentInstanceId,
AggregationGroupByRollupLevel rollupLevel)
Set the current aggregation state row - for use when evaluation nodes are asked to evaluate. |
void |
setRemovedCallback(AggregationRowRemovedCallback callback)
|
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected final AggregationStateFactory[] accessAggregations
protected final boolean isJoin
protected java.util.Map<java.lang.Object,AggregationMethodRowAged> aggregatorsPerGroup
Constructor Detail |
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public AggSvcGroupByReclaimAgedImpl(ExprEvaluator[] evaluators, AggregationMethodFactory[] aggregators, java.lang.Object groupKeyBinding, AggregationAccessorSlotPair[] accessors, AggregationStateFactory[] accessAggregations, boolean join, AggSvcGroupByReclaimAgedEvalFunc evaluationFunctionMaxAge, AggSvcGroupByReclaimAgedEvalFunc evaluationFunctionFrequency, MethodResolutionService methodResolutionService)
Method Detail |
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public void clearResults(ExprEvaluatorContext exprEvaluatorContext)
AggregationService
public void applyEnter(EventBean[] eventsPerStream, java.lang.Object groupByKey, ExprEvaluatorContext exprEvaluatorContext)
AggregationService
eventsPerStream
- - events for each stream entering windowgroupByKey
- - can be null if grouping without keys is desired, else the keys
or array of keys to use for grouping, each distinct key value results in a new row of aggregation state.exprEvaluatorContext
- context for expression evaluatiompublic void applyLeave(EventBean[] eventsPerStream, java.lang.Object groupByKey, ExprEvaluatorContext exprEvaluatorContext)
AggregationService
eventsPerStream
- - events for each stream entering windowgroupByKey
- - can be null if grouping without keys is desired, else the keys
or array of keys to use for grouping, each distinct key value results in a new row of aggregation state.exprEvaluatorContext
- context for expression evaluatiompublic void setCurrentAccess(java.lang.Object groupByKey, int agentInstanceId, AggregationGroupByRollupLevel rollupLevel)
AggregationService
groupByKey
- - single key identifying the row of aggregation statesagentInstanceId
- context partition idpublic java.lang.Object getValue(int column, int agentInstanceId)
AggregationResultFuture
column
- is assigned to the aggregation expression node and passed as an column (index) into a rowagentInstanceId
- the context partition id
public java.util.Collection<EventBean> getCollection(int column, ExprEvaluatorContext context)
public EventBean getEventBean(int column, ExprEvaluatorContext context)
public void setRemovedCallback(AggregationRowRemovedCallback callback)
public void internalHandleUpdated(java.lang.Object groupByKey, AggregationMethodRowAged row)
public void internalHandleRemoved(java.lang.Object key)
public void accept(AggregationServiceVisitor visitor)
public void acceptGroupDetail(AggregationServiceVisitorWGroupDetail visitor)
public boolean isGrouped()
protected void handleRemovedKeys()
public java.lang.Object getGroupKey(int agentInstanceId)
public java.util.Collection<java.lang.Object> getGroupKeys(ExprEvaluatorContext exprEvaluatorContext)
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