/**************************************************************************************
* Copyright (C) 2008 EsperTech, Inc. All rights reserved. *
* http://esper.codehaus.org *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
**************************************************************************************/
package com.espertech.esper.epl.agg.service;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.epl.agg.access.AggregationAccessorSlotPair;
import com.espertech.esper.epl.agg.access.AggregationState;
import com.espertech.esper.epl.agg.aggregator.AggregationMethod;
import com.espertech.esper.epl.expression.ExprEvaluator;
import com.espertech.esper.epl.expression.ExprEvaluatorContext;
import com.espertech.esper.metrics.instrumentation.InstrumentationHelper;
import java.util.Collection;
/**
* Implementation for handling aggregation without any grouping (no group-by).
*/
public class AggSvcGroupAllMixedAccessImpl extends AggregationServiceBaseUngrouped
{
private final AggregationAccessorSlotPair[] accessors;
protected AggregationState[] states;
public AggSvcGroupAllMixedAccessImpl(ExprEvaluator evaluators[], AggregationMethod aggregators[], AggregationAccessorSlotPair[] accessors, AggregationState[] states, AggregationMethodFactory aggregatorFactories[], AggregationStateFactory[] accessAggregations) {
super(evaluators, aggregators, aggregatorFactories, accessAggregations);
this.accessors = accessors;
this.states = states;
}
public void applyEnter(EventBean[] eventsPerStream, Object optionalGroupKeyPerRow, ExprEvaluatorContext exprEvaluatorContext)
{
if (InstrumentationHelper.ENABLED) { InstrumentationHelper.get().qAggregationUngroupedApplyEnterLeave(true, evaluators.length, accessAggregations.length);}
for (int i = 0; i < evaluators.length; i++)
{
if (InstrumentationHelper.ENABLED) { InstrumentationHelper.get().qAggNoAccessEnterLeave(true, i, aggregators[i], aggregatorFactories[i]);}
Object columnResult = evaluators[i].evaluate(eventsPerStream, true, exprEvaluatorContext);
aggregators[i].enter(columnResult);
if (InstrumentationHelper.ENABLED) { InstrumentationHelper.get().aAggNoAccessEnterLeave(true, i, aggregators[i]);}
}
for (int i = 0; i < states.length; i++) {
if (InstrumentationHelper.ENABLED) { InstrumentationHelper.get().qAggAccessEnterLeave(true, i, states[i], accessAggregations[i]);}
states[i].applyEnter(eventsPerStream, exprEvaluatorContext);
if (InstrumentationHelper.ENABLED) { InstrumentationHelper.get().aAggAccessEnterLeave(true, i, states[i]);}
}
if (InstrumentationHelper.ENABLED) { InstrumentationHelper.get().aAggregationUngroupedApplyEnterLeave(true);}
}
public void applyLeave(EventBean[] eventsPerStream, Object optionalGroupKeyPerRow, ExprEvaluatorContext exprEvaluatorContext)
{
if (InstrumentationHelper.ENABLED) { InstrumentationHelper.get().qAggregationUngroupedApplyEnterLeave(false, evaluators.length, accessAggregations.length);}
for (int i = 0; i < evaluators.length; i++)
{
if (InstrumentationHelper.ENABLED) { InstrumentationHelper.get().qAggNoAccessEnterLeave(false, i, aggregators[i], aggregatorFactories[i]);}
Object columnResult = evaluators[i].evaluate(eventsPerStream, false, exprEvaluatorContext);
aggregators[i].leave(columnResult);
if (InstrumentationHelper.ENABLED) { InstrumentationHelper.get().aAggNoAccessEnterLeave(false, i, aggregators[i]);}
}
for (int i = 0; i < states.length; i++) {
if (InstrumentationHelper.ENABLED) { InstrumentationHelper.get().qAggAccessEnterLeave(false, i, states[i], accessAggregations[i]);}
states[i].applyLeave(eventsPerStream, exprEvaluatorContext);
if (InstrumentationHelper.ENABLED) { InstrumentationHelper.get().aAggAccessEnterLeave(false, i, states[i]);}
}
if (InstrumentationHelper.ENABLED) { InstrumentationHelper.get().aAggregationUngroupedApplyEnterLeave(false);}
}
public void setCurrentAccess(Object groupKey, int agentInstanceId, AggregationGroupByRollupLevel rollupLevel)
{
// no action needed - this implementation does not group and the current row is the single group
}
public Object getValue(int column, int agentInstanceId)
{
if (column < aggregators.length) {
return aggregators[column].getValue();
}
else {
AggregationAccessorSlotPair pair = accessors[column - aggregators.length];
return pair.getAccessor().getValue(states[pair.getSlot()]);
}
}
public Collection<EventBean> getCollection(int column, ExprEvaluatorContext context) {
if (column < aggregators.length) {
return null;
}
else {
AggregationAccessorSlotPair pair = accessors[column - aggregators.length];
return pair.getAccessor().getEnumerableEvents(states[pair.getSlot()]);
}
}
public EventBean getEventBean(int column, ExprEvaluatorContext context) {
if (column < aggregators.length) {
return null;
}
else {
AggregationAccessorSlotPair pair = accessors[column - aggregators.length];
return pair.getAccessor().getEnumerableEvent(states[pair.getSlot()]);
}
}
public void clearResults(ExprEvaluatorContext exprEvaluatorContext)
{
for (AggregationState state : states) {
state.clear();
}
for (AggregationMethod aggregator : aggregators)
{
aggregator.clear();
}
}
public void setRemovedCallback(AggregationRowRemovedCallback callback) {
// not applicable
}
public void accept(AggregationServiceVisitor visitor) {
visitor.visitAggregations(1, states, aggregators);
}
public void acceptGroupDetail(AggregationServiceVisitorWGroupDetail visitor) {
}
public boolean isGrouped() {
return false;
}
public Object getGroupKey(int agentInstanceId) {
return null;
}
public Collection<Object> getGroupKeys(ExprEvaluatorContext exprEvaluatorContext) {
return null;
}
}