/* * ************************************************************************************* * 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.datetime.interval; import com.espertech.esper.client.EventBean; import com.espertech.esper.client.EventPropertyGetter; import com.espertech.esper.epl.expression.ExprEvaluator; import com.espertech.esper.epl.expression.ExprEvaluatorContext; import com.espertech.esper.epl.expression.ExprValidationException; import java.util.Map; public class ExprEvaluatorStreamLongPropFragment implements ExprEvaluator { private final int streamId; private final EventPropertyGetter getterFragment; private final EventPropertyGetter getterTimestamp; public ExprEvaluatorStreamLongPropFragment(int streamId, EventPropertyGetter getterFragment, EventPropertyGetter getterTimestamp) { this.streamId = streamId; this.getterFragment = getterFragment; this.getterTimestamp = getterTimestamp; } public Object evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) { EventBean theEvent = eventsPerStream[streamId]; if (theEvent == null) { return null; } Object event = getterFragment.getFragment(theEvent); if (!(event instanceof EventBean)) { return null; } return getterTimestamp.get((EventBean) event); } public Class getType() { return Long.class; } public Map<String, Object> getEventType() throws ExprValidationException { return null; } }