MyEncodingTime.java

//* Licensed Materials - Property of                                  *
//* IBM                                                               *
//*                                                                   *
//* eu.abc4trust.pabce.1.34                                           *
//*                                                                   *
//* (C) Copyright IBM Corp. 2014. All Rights Reserved.                *
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//* This file is licensed 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         *
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//* under the License.                                                *
//*/**/****************************************************************

package eu.abc4trust.util.attributeEncoding;

import java.math.BigInteger;
import java.net.URI;

import eu.abc4trust.util.attributeTypes.EnumAllowedValues;
import eu.abc4trust.util.attributeTypes.MyAttributeValueTime;

public class MyEncodingTime extends MyAttributeValueTime
    implements
      MyAttributeEncoding {
  
  public static final URI ENCODING = URI.create("urn:abc4trust:1.0:encoding:time:sinceMidnight:unsigned");

  public MyEncodingTime(Object attributeValue, /*IsNull*/ EnumAllowedValues av) {
    super(attributeValue, av);
  }

  @Override
  public BigInteger getIntegerValue() {
    long unixTime = getValue().toGregorianCalendar().getTimeInMillis() / 1000;
    long secondsInDay = 60*60*24;
    long result = unixTime%secondsInDay;
    // Fix modulo for negative numbers
    if(result < 0) {
      result += secondsInDay;
    }
    return BigInteger.valueOf(result);
  }
  
  @Override
  public URI getEncoding() {
    return ENCODING;
  }
  
  public static Object recoverValueFromIntegerValue(BigInteger integerValue, /*IsNull*/ EnumAllowedValues eav) {
    int seconds = integerValue.mod(BigInteger.valueOf(60)).intValue();
    integerValue = integerValue.divide(BigInteger.valueOf(60));
    int minutes = integerValue.mod(BigInteger.valueOf(60)).intValue();
    integerValue = integerValue.divide(BigInteger.valueOf(60));
    int hours = integerValue.intValue();
    return String.format("%02d:%02d:%02dZ", hours, minutes, seconds);
  }
}