/*
***************************************************************************************
* 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.avro.selectexprrep;
import com.espertech.esper.avro.core.AvroEventType;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.EventType;
import com.espertech.esper.epl.core.SelectExprProcessor;
import com.espertech.esper.epl.expression.core.ExprEvaluatorContext;
import com.espertech.esper.event.EventAdapterService;
import org.apache.avro.Schema;
import org.apache.avro.generic.GenericData;
/**
* Processor for select-clause expressions that handles wildcards. Computes results based on matching events.
*/
public class SelectExprJoinWildcardProcessorAvro implements SelectExprProcessor {
private final EventType resultEventType;
private final Schema schema;
private final EventAdapterService eventAdapterService;
public SelectExprJoinWildcardProcessorAvro(EventType resultEventType, EventAdapterService eventAdapterService) {
this.resultEventType = resultEventType;
this.schema = ((AvroEventType) resultEventType).getSchemaAvro();
this.eventAdapterService = eventAdapterService;
}
public EventBean process(EventBean[] eventsPerStream, boolean isNewData, boolean isSynthesize, ExprEvaluatorContext exprEvaluatorContext) {
GenericData.Record event = new GenericData.Record(schema);
for (int i = 0; i < eventsPerStream.length; i++) {
EventBean streamEvent = eventsPerStream[i];
if (streamEvent != null) {
GenericData.Record record = (GenericData.Record) streamEvent.getUnderlying();
event.put(i, record);
}
}
return eventAdapterService.adapterForTypedAvro(event, resultEventType);
}
public EventType getResultEventType() {
return resultEventType;
}
}