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71 lines
2.6 KiB
Java
71 lines
2.6 KiB
Java
// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package google.registry.xml;
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import static com.google.common.base.Strings.isNullOrEmpty;
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import static org.joda.time.DateTimeZone.UTC;
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import javax.annotation.CheckForNull;
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import javax.annotation.Nullable;
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import javax.xml.bind.annotation.adapters.XmlAdapter;
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import org.joda.time.DateTime;
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import org.joda.time.format.DateTimeFormatter;
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import org.joda.time.format.ISODateTimeFormat;
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/**
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* Adapter to use Joda {@link DateTime} when marshalling XML timestamps.
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*
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* <p>These fields shall contain timestamps indicating the date and time in UTC as specified in
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* RFC3339, with no offset from the zero meridian. For example: {@code 2010-10-17T00:00:00Z}.
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*/
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public class UtcDateTimeAdapter extends XmlAdapter<String, DateTime> {
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/** @see ISODateTimeFormat#dateTimeNoMillis */
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private static final DateTimeFormatter MARSHAL_FORMAT = ISODateTimeFormat.dateTimeNoMillis();
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/** @see ISODateTimeFormat#dateTimeParser */
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private static final DateTimeFormatter UNMARSHAL_FORMAT = ISODateTimeFormat.dateTimeParser();
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/** Same as {@link #marshal(DateTime)}, but in a convenient static format. */
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public static String getFormattedString(@Nullable DateTime timestamp) {
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if (timestamp == null) {
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return "";
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}
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return MARSHAL_FORMAT.print(timestamp.toDateTime(UTC));
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}
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/**
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* Parses an ISO timestamp string into a UTC {@link DateTime} object, converting timezones if
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* necessary. If {@code timestamp} is empty or {@code null} then {@code null} is returned.
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*/
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@Nullable
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@CheckForNull
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@Override
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public DateTime unmarshal(@Nullable String timestamp) {
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if (isNullOrEmpty(timestamp)) {
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return null;
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}
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return UNMARSHAL_FORMAT.parseDateTime(timestamp).withZone(UTC);
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}
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/**
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* Converts {@link DateTime} to UTC and returns it as an RFC3339 string. If {@code timestamp} is
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* {@code null} then an empty string is returned.
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*/
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@Override
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public String marshal(@Nullable DateTime timestamp) {
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return getFormattedString(timestamp);
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}
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}
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