| /* |
| * 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.olingo.commons.core.edm.primitivetype; |
| |
| import java.sql.Timestamp; |
| import java.time.Instant; |
| import java.time.LocalDateTime; |
| import java.time.ZoneId; |
| import java.time.ZoneOffset; |
| import java.time.ZonedDateTime; |
| import java.time.format.DateTimeParseException; |
| import java.time.temporal.ChronoUnit; |
| import java.util.Calendar; |
| import java.util.GregorianCalendar; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import org.apache.olingo.commons.api.edm.EdmPrimitiveTypeException; |
| |
| /** |
| * Implementation of the EDM primitive type DateTimeOffset. |
| */ |
| public final class EdmDateTimeOffset extends SingletonPrimitiveType { |
| |
| private static final ZoneId ZULU = ZoneId.of("Z"); |
| |
| private static final Pattern PATTERN = Pattern.compile("(-?\\p{Digit}{4,})-(\\p{Digit}{2})-(\\p{Digit}{2})" |
| + "T(\\p{Digit}{2}):(\\p{Digit}{2})(?::(\\p{Digit}{2})(\\.(\\p{Digit}{0,12}?)0*)?)?" |
| + "(Z|([-+]\\p{Digit}{2}:\\p{Digit}{2}))?"); |
| |
| private static final EdmDateTimeOffset INSTANCE = new EdmDateTimeOffset(); |
| |
| public static EdmDateTimeOffset getInstance() { |
| return INSTANCE; |
| } |
| |
| @Override |
| public Class<?> getDefaultType() { |
| return Timestamp.class; |
| } |
| |
| @Override |
| protected <T> T internalValueOfString(final String value, final Boolean isNullable, final Integer maxLength, |
| final Integer precision, final Integer scale, final Boolean isUnicode, final Class<T> returnType) |
| throws EdmPrimitiveTypeException { |
| try { |
| ZonedDateTime zdt = parseZonedDateTime(value); |
| |
| return convertZonedDateTime(zdt, returnType); |
| } catch (DateTimeParseException ex) { |
| throw new EdmPrimitiveTypeException("The literal '" + value + "' has illegal content.", ex); |
| } catch (final ClassCastException e) { |
| throw new EdmPrimitiveTypeException("The value type " + returnType + " is not supported.", e); |
| } |
| } |
| |
| private static ZonedDateTime parseZonedDateTime(final String value) { |
| ZonedDateTime zdt; |
| try { |
| // ISO-8601 conform pattern |
| zdt = ZonedDateTime.parse(value); |
| } catch (DateTimeParseException ex) { |
| // for backward compatibility - allow patterns that don't specify a time zone |
| final Matcher matcher = PATTERN.matcher(value); |
| if (matcher.matches() && matcher.group(9) == null) { |
| zdt = ZonedDateTime.parse(value + "Z"); |
| } else { |
| throw ex; |
| } |
| } |
| return zdt; |
| } |
| |
| @SuppressWarnings("unchecked") |
| private static <T> T convertZonedDateTime(ZonedDateTime zdt, Class<T> returnType) { |
| if (returnType == ZonedDateTime.class) { |
| return (T) zdt; |
| } else if (returnType == Instant.class) { |
| return (T) zdt.toInstant(); |
| } else if (returnType.isAssignableFrom(Timestamp.class)) { |
| return (T) Timestamp.from(zdt.toInstant()); |
| } else if (returnType.isAssignableFrom(java.util.Date.class)) { |
| return (T) java.util.Date.from(zdt.toInstant()); |
| } else if (returnType.isAssignableFrom(java.sql.Time.class)) { |
| return (T) new java.sql.Time(zdt.toInstant().truncatedTo(ChronoUnit.SECONDS).toEpochMilli()); |
| } else if (returnType.isAssignableFrom(java.sql.Date.class)) { |
| return (T) new java.sql.Date(zdt.toInstant().truncatedTo(ChronoUnit.SECONDS).toEpochMilli()); |
| } else if (returnType.isAssignableFrom(Long.class)) { |
| return (T) Long.valueOf(zdt.toInstant().toEpochMilli()); |
| } else if (returnType.isAssignableFrom(Calendar.class)) { |
| return (T) GregorianCalendar.from(zdt); |
| } else { |
| throw new ClassCastException("Unsupported return type " + returnType.getSimpleName()); |
| } |
| } |
| |
| @Override |
| protected <T> String internalValueToString(final T value, final Boolean isNullable, final Integer maxLength, |
| final Integer precision, final Integer scale, final Boolean isUnicode) throws EdmPrimitiveTypeException { |
| ZonedDateTime zdt = createZonedDateTime(value); |
| |
| return format(zdt.toLocalDateTime(), zdt.getOffset(), zdt.getNano()); |
| } |
| |
| private static <T> ZonedDateTime createZonedDateTime(final T value) throws EdmPrimitiveTypeException { |
| if (value instanceof ZonedDateTime) { |
| return (ZonedDateTime) value; |
| } |
| |
| if (value instanceof Instant) { |
| return ((Instant) value).atZone(ZULU); |
| } |
| |
| if (value instanceof GregorianCalendar) { |
| GregorianCalendar calendar = (GregorianCalendar) value; |
| ZonedDateTime zdt = calendar.toZonedDateTime(); |
| ZoneId normalizedZoneId = calendar.getTimeZone().toZoneId().normalized(); |
| return zdt.withZoneSameInstant(normalizedZoneId); |
| } |
| |
| return convertToInstant(value).atZone(ZULU); |
| } |
| |
| private static String format(LocalDateTime dateTime, ZoneOffset offset, int nanos) { |
| String str = dateTime.toString(); |
| if (nanos > 0) { |
| str = removeTrailingZeros(str); |
| } |
| return str + offset.toString(); |
| } |
| |
| private static String removeTrailingZeros(String str) { |
| char[] chars = str.toCharArray(); |
| int trailingZeros = 0; |
| for (int i = chars.length - 1; i >= 0 && chars[i] == '0'; i--) { |
| trailingZeros++; |
| } |
| return str.substring(0, chars.length - trailingZeros); |
| } |
| |
| /** |
| * Creates an {@link Instant} from the given value. |
| * |
| * @param value the value as {@link Instant}, {@link java.util.Date}, |
| * {@link java.sql.Timestamp}, {@link Long} or |
| * {@link GregorianCalendar} |
| * @return the value as {@link Instant} |
| * @throws EdmPrimitiveTypeException if the type of the value is not supported |
| */ |
| private static <T> Instant convertToInstant(final T value) throws EdmPrimitiveTypeException { |
| if (value instanceof java.sql.Time || value instanceof java.sql.Date) { |
| throw new EdmPrimitiveTypeException("The value type " + value.getClass() + " is not supported."); |
| } else if (value instanceof java.util.Date) { |
| return ((java.util.Date) value).toInstant(); |
| } else if (value instanceof Timestamp) { |
| return ((Timestamp) value).toInstant(); |
| } else if (value instanceof Long) { |
| return Instant.ofEpochMilli((Long) value); |
| } else { |
| throw new EdmPrimitiveTypeException("The value type " + value.getClass() + " is not supported."); |
| } |
| } |
| } |