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   1 /**
   2  * Copyright (c) 2010-2021 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.mqtt.generic.values;
  14
  15 import java.time.format.DateTimeFormatter;
  16 import java.util.stream.Collectors;
  17 import java.util.stream.Stream;
  18
  19 import org.eclipse.jdt.annotation.NonNullByDefault;
  20 import org.eclipse.jdt.annotation.Nullable;
  21 import org.openhab.core.library.CoreItemFactory;
  22 import org.openhab.core.library.types.DateTimeType;
  23 import org.openhab.core.library.types.StringType;
  24 import org.openhab.core.types.Command;
  25 import org.openhab.core.types.UnDefType;
  26
  27 /**
  28  * Implements a datetime value.
  29  *
  30  * @author David Graeff - Initial contribution
  31  */
  32 @NonNullByDefault
  33 public class DateTimeValue extends Value {
  34     public DateTimeValue() {
  35         super(CoreItemFactory.DATETIME, Stream.of(DateTimeType.class, StringType.class).collect(Collectors.toList()));
  36     }
  37
  38     @Override
  39     public void update(Command command) throws IllegalArgumentException {
  40         if (command instanceof DateTimeType) {
  41             state = ((DateTimeType) command);
  42         } else {
  43             state = DateTimeType.valueOf(command.toString());
  44         }
  45     }
  46
  47     @Override
  48     public String getMQTTpublishValue(@Nullable String pattern) {
  49         if (state == UnDefType.UNDEF) {
  50             return "";
  51         }
  52         String formatPattern = pattern;
  53         if (formatPattern == null || "%s".contentEquals(formatPattern)) {
  54             return DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(((DateTimeType) state).getZonedDateTime());
  55         }
  56         return String.format(formatPattern, ((DateTimeType) state).getZonedDateTime());
  57     }
  58 }