com.espertech.esper.epl.table.strategy.ExprTableExprEvaluatorAccess Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of esper Show documentation
Show all versions of esper Show documentation
Complex event processing and event series analysis component
The newest version!
/*
***************************************************************************************
* 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.table.strategy;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.EventType;
import com.espertech.esper.codegen.base.CodegenClassScope;
import com.espertech.esper.codegen.base.CodegenMethodScope;
import com.espertech.esper.epl.expression.codegen.CodegenLegoEvaluateSelf;
import com.espertech.esper.codegen.model.expression.CodegenExpression;
import com.espertech.esper.epl.agg.access.AggregationAccessorSlotPair;
import com.espertech.esper.epl.agg.service.common.AggregationRowPair;
import com.espertech.esper.epl.expression.codegen.ExprForgeCodegenSymbol;
import com.espertech.esper.epl.expression.core.*;
import com.espertech.esper.event.EventAdapterService;
import com.espertech.esper.event.ObjectArrayBackedEventBean;
import com.espertech.esper.metrics.instrumentation.InstrumentationHelper;
import java.util.Collection;
import static com.espertech.esper.codegen.model.expression.CodegenExpressionBuilder.constantNull;
public class ExprTableExprEvaluatorAccess extends ExprTableExprEvaluatorBase implements ExprEvaluator, ExprEnumerationForge, ExprEnumerationEval {
private final AggregationAccessorSlotPair accessAccessorSlotPair;
private final EventType eventTypeColl;
public ExprTableExprEvaluatorAccess(ExprNode exprNode, String tableName, String subpropName, int streamNum, Class returnType, AggregationAccessorSlotPair accessAccessorSlotPair, EventType eventTypeColl) {
super(exprNode, tableName, subpropName, streamNum, returnType);
this.accessAccessorSlotPair = accessAccessorSlotPair;
this.eventTypeColl = eventTypeColl;
}
public Object evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) {
if (InstrumentationHelper.ENABLED) {
InstrumentationHelper.get().qExprTableSubproperty(exprNode, tableName, subpropName);
}
ObjectArrayBackedEventBean oa = (ObjectArrayBackedEventBean) eventsPerStream[streamNum];
AggregationRowPair row = ExprTableEvalStrategyUtil.getRow(oa);
Object result = accessAccessorSlotPair.getAccessor().getValue(row.getStates()[accessAccessorSlotPair.getSlot()], eventsPerStream, isNewData, context);
if (InstrumentationHelper.ENABLED) {
InstrumentationHelper.get().aExprTableSubproperty(result);
}
return result;
}
public ExprEnumerationEval getExprEvaluatorEnumeration() {
return this;
}
public EventType getEventTypeCollection(EventAdapterService eventAdapterService, int statementId) throws ExprValidationException {
return eventTypeColl;
}
public Collection evaluateGetROCollectionEvents(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) {
ObjectArrayBackedEventBean oa = (ObjectArrayBackedEventBean) eventsPerStream[streamNum];
AggregationRowPair row = ExprTableEvalStrategyUtil.getRow(oa);
return accessAccessorSlotPair.getAccessor().getEnumerableEvents(row.getStates()[accessAccessorSlotPair.getSlot()], eventsPerStream, isNewData, context);
}
public CodegenExpression evaluateGetROCollectionEventsCodegen(CodegenMethodScope codegenMethodScope, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope) {
return CodegenLegoEvaluateSelf.evaluateSelfGetROCollectionEvents(this, codegenMethodScope, exprSymbol, codegenClassScope);
}
public Class getComponentTypeCollection() throws ExprValidationException {
return null;
}
public Collection evaluateGetROCollectionScalar(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) {
return null;
}
public CodegenExpression evaluateGetROCollectionScalarCodegen(CodegenMethodScope codegenMethodScope, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope) {
return constantNull();
}
public EventType getEventTypeSingle(EventAdapterService eventAdapterService, int statementId) throws ExprValidationException {
return null;
}
public EventBean evaluateGetEventBean(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) {
return null;
}
public CodegenExpression evaluateGetEventBeanCodegen(CodegenMethodScope codegenMethodScope, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope) {
return constantNull();
}
public ExprNodeRenderable getForgeRenderable() {
return exprNode;
}
}