/*
***************************************************************************************
* Copyright (C) 2006 EsperTech, Inc. All rights reserved. *
* http://www.espertech.com/esper *
* 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.core.ExprEvaluator;
import com.espertech.esper.epl.expression.core.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].getAggregationExpression());
}
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].getAggregationExpression());
}
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].getAggregationExpression());
}
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].getAggregationExpression());
}
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, EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext exprEvaluatorContext) {
if (column < aggregators.length) {
return aggregators[column].getValue();
} else {
AggregationAccessorSlotPair pair = accessors[column - aggregators.length];
return pair.getAccessor().getValue(states[pair.getSlot()], eventsPerStream, isNewData, exprEvaluatorContext);
}
}
public Collection<EventBean> getCollectionOfEvents(int column, EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) {
if (column < aggregators.length) {
return null;
} else {
AggregationAccessorSlotPair pair = accessors[column - aggregators.length];
return pair.getAccessor().getEnumerableEvents(states[pair.getSlot()], eventsPerStream, isNewData, context);
}
}
public Collection<Object> getCollectionScalar(int column, EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) {
if (column < aggregators.length) {
return null;
} else {
AggregationAccessorSlotPair pair = accessors[column - aggregators.length];
return pair.getAccessor().getEnumerableScalar(states[pair.getSlot()], eventsPerStream, isNewData, context);
}
}
public EventBean getEventBean(int column, EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) {
if (column < aggregators.length) {
return null;
} else {
AggregationAccessorSlotPair pair = accessors[column - aggregators.length];
return pair.getAccessor().getEnumerableEvent(states[pair.getSlot()], eventsPerStream, isNewData, context);
}
}
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;
}
}