/*
* *************************************************************************************
* 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.reformatop;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.EventType;
import com.espertech.esper.epl.datetime.eval.DatetimeMethodEnum;
import com.espertech.esper.epl.datetime.eval.ExprDotNodeFilterAnalyzerDesc;
import com.espertech.esper.epl.expression.ExprDotNodeFilterAnalyzerInput;
import com.espertech.esper.epl.expression.ExprEvaluatorContext;
import com.espertech.esper.epl.expression.ExprNode;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
public class ReformatOpStringFormat implements ReformatOp {
public Object evaluate(Long ts, EventBean[] eventsPerStream, boolean newData, ExprEvaluatorContext exprEvaluatorContext) {
return action(new Date(ts));
}
public Object evaluate(Date d, EventBean[] eventsPerStream, boolean newData, ExprEvaluatorContext exprEvaluatorContext) {
return action(d);
}
public Object evaluate(Calendar cal, EventBean[] eventsPerStream, boolean newData, ExprEvaluatorContext exprEvaluatorContext) {
return action(cal.getTime());
}
private static String action(Date d) {
SimpleDateFormat format = new SimpleDateFormat();
return format.format(d);
}
public Class getReturnType() {
return String.class;
}
public ExprDotNodeFilterAnalyzerDesc getFilterDesc(EventType[] typesPerStream, DatetimeMethodEnum currentMethod, List<ExprNode> currentParameters, ExprDotNodeFilterAnalyzerInput inputDesc) {
return null;
}
}