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org.apache.predictionio.data.Utils.scala Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.predictionio.data
import org.joda.time.DateTime
import org.joda.time.format.ISODateTimeFormat
import java.lang.IllegalArgumentException
private[predictionio] object Utils {
// use dateTime() for strict ISO8601 format
val dateTimeFormatter = ISODateTimeFormat.dateTime().withOffsetParsed()
val dateTimeNoMillisFormatter =
ISODateTimeFormat.dateTimeNoMillis().withOffsetParsed()
def stringToDateTime(dt: String): DateTime = {
// We accept two formats.
// 1. "yyyy-MM-dd'T'HH:mm:ss.SSSZZ"
// 2. "yyyy-MM-dd'T'HH:mm:ssZZ"
// The first one also takes milliseconds into account.
try {
// formatting for "yyyy-MM-dd'T'HH:mm:ss.SSSZZ"
dateTimeFormatter.parseDateTime(dt)
} catch {
case e: IllegalArgumentException => {
// handle when the datetime string doesn't specify milliseconds.
dateTimeNoMillisFormatter.parseDateTime(dt)
}
}
}
def dateTimeToString(dt: DateTime): String = dateTimeFormatter.print(dt)
// dt.toString
}
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