diff --git a/pom.xml b/pom.xml index f91941a92..31a0d44f1 100644 --- a/pom.xml +++ b/pom.xml @@ -101,7 +101,7 @@ joda-time joda-time - 1.6 + ${jodatime} true diff --git a/src/main/java/org/springframework/data/convert/JodaTimeConverters.java b/src/main/java/org/springframework/data/convert/JodaTimeConverters.java new file mode 100644 index 000000000..b049ff7d7 --- /dev/null +++ b/src/main/java/org/springframework/data/convert/JodaTimeConverters.java @@ -0,0 +1,137 @@ +/* + * Copyright 2013 the original author or authors. + * + * 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 specific language governing permissions and + * limitations under the License. + */ +package org.springframework.data.convert; + +import java.util.ArrayList; +import java.util.Collection; +import java.util.Collections; +import java.util.Date; +import java.util.List; + +import org.joda.time.DateMidnight; +import org.joda.time.DateTime; +import org.joda.time.LocalDate; +import org.joda.time.LocalDateTime; +import org.springframework.core.convert.converter.Converter; +import org.springframework.util.ClassUtils; + +/** + * Helper class to register JodaTime specific {@link Converter} implementations in case the library is present on the + * classpath. + * + * @author Oliver Gierke + */ +public abstract class JodaTimeConverters { + + private static final boolean JODA_TIME_IS_PRESENT = ClassUtils.isPresent("org.joda.time.LocalDate", null); + + /** + * Returns the converters to be registered. Will only return converters in case JodaTime is present on the class. + * + * @return + */ + public static Collection> getConvertersToRegister() { + + if (!JODA_TIME_IS_PRESENT) { + return Collections.emptySet(); + } + + List> converters = new ArrayList>(); + converters.add(LocalDateToDateConverter.INSTANCE); + converters.add(LocalDateTimeToDateConverter.INSTANCE); + converters.add(DateTimeToDateConverter.INSTANCE); + converters.add(DateMidnightToDateConverter.INSTANCE); + + converters.add(DateToLocalDateConverter.INSTANCE); + converters.add(DateToLocalDateTimeConverter.INSTANCE); + converters.add(DateToDateTimeConverter.INSTANCE); + converters.add(DateToDateMidnightConverter.INSTANCE); + + return converters; + } + + public static enum LocalDateToDateConverter implements Converter { + + INSTANCE; + + public Date convert(LocalDate source) { + return source == null ? null : source.toDate(); + } + } + + public static enum LocalDateTimeToDateConverter implements Converter { + + INSTANCE; + + public Date convert(LocalDateTime source) { + return source == null ? null : source.toDate(); + } + } + + public static enum DateTimeToDateConverter implements Converter { + + INSTANCE; + + public Date convert(DateTime source) { + return source == null ? null : source.toDate(); + } + } + + public static enum DateMidnightToDateConverter implements Converter { + + INSTANCE; + + public Date convert(DateMidnight source) { + return source == null ? null : source.toDate(); + } + } + + public static enum DateToLocalDateConverter implements Converter { + + INSTANCE; + + public LocalDate convert(Date source) { + return source == null ? null : new LocalDate(source.getTime()); + } + } + + public static enum DateToLocalDateTimeConverter implements Converter { + + INSTANCE; + + public LocalDateTime convert(Date source) { + return source == null ? null : new LocalDateTime(source.getTime()); + } + } + + public static enum DateToDateTimeConverter implements Converter { + + INSTANCE; + + public DateTime convert(Date source) { + return source == null ? null : new DateTime(source.getTime()); + } + } + + public static enum DateToDateMidnightConverter implements Converter { + + INSTANCE; + + public DateMidnight convert(Date source) { + return source == null ? null : new DateMidnight(source.getTime()); + } + } +}