/*
* 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.rest.webmvc.json;
import org.hibernate.Version;
import org.springframework.util.ClassUtils;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.datatype.hibernate4.Hibernate4Module;
import com.fasterxml.jackson.datatype.joda.JodaModule;
/**
* Helper class to register datatype modules based on their presence in the classpath.
*
* @author Jon Brisbin
* @author Oliver Gierke
*/
public class Jackson2DatatypeHelper {
private static final boolean IS_HIBERNATE_AVAILABLE = ClassUtils.isPresent("org.hibernate.Version",
Jackson2DatatypeHelper.class.getClassLoader());
private static final boolean IS_HIBERNATE4_MODULE_AVAILABLE = ClassUtils.isPresent(
"com.fasterxml.jackson.datatype.hibernate4.Hibernate4Module", Jackson2DatatypeHelper.class.getClassLoader());
private static final boolean IS_JODA_MODULE_AVAILABLE = ClassUtils.isPresent(
"com.fasterxml.jackson.datatype.joda.JodaModule", Jackson2DatatypeHelper.class.getClassLoader());
public static void configureObjectMapper(ObjectMapper mapper) {
// Hibernate types
if (IS_HIBERNATE_AVAILABLE && Hibernate4Checker.isHibernate4() && IS_HIBERNATE4_MODULE_AVAILABLE) {
Hibernate4ModuleRegistrar.registerModule(mapper);
}
// JODA time
if (IS_JODA_MODULE_AVAILABLE) {
JodaModuleRegistrar.registerModule(mapper);
}
}
private static class Hibernate4Checker {
public static boolean isHibernate4() {
return Version.getVersionString().startsWith("4");
}
}
private static class Hibernate4ModuleRegistrar {
public static void registerModule(ObjectMapper mapper) {
mapper.registerModule(new Hibernate4Module());
}
}
private static class JodaModuleRegistrar {
public static void registerModule(ObjectMapper mapper) {
mapper.registerModule(new JodaModule());
mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
}
}
}