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68 lines
2.5 KiB
Java
68 lines
2.5 KiB
Java
// Copyright 2016 The Nomulus 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.LocalDate;
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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 LocalDate} when marshalling the XML Schema {@code date} type.
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*
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* <p>Dates are represented as midnight in UTC. The parser aims to be permissive in what it accepts.
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* Timestamps are converted to UTC if a zone is specified and then the time section is truncated.
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* This can lead to unexpected behavior, but it will be your fault.
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*/
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public class DateAdapter extends XmlAdapter<String, LocalDate> {
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/** @see ISODateTimeFormat#date */
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private static final DateTimeFormatter MARSHAL_FORMAT = ISODateTimeFormat.date();
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/** @see ISODateTimeFormat#dateTimeParser */
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private static final DateTimeFormatter UNMARSHAL_FORMAT = ISODateTimeFormat.dateTimeParser();
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/**
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* Parses an ISO timestamp string into a UTC {@link LocalDate} object, converting timezones
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* and truncating time to midnight if necessary. If {@code timestamp} is empty or {@code null}
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* 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 LocalDate 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).toLocalDate();
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}
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/**
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* Converts {@link LocalDate} to UTC and returns it as an RFC3339 string. If {@code timestamp}
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* is {@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 LocalDate date) {
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if (date == null) {
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return "";
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}
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return MARSHAL_FORMAT.print(date.toDateTimeAtStartOfDay(UTC));
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}
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}
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