/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* <http://www.gnu.org/licenses/> or <http://www.apache.org/licenses/LICENSE-2.0>.
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.web.jersey.util;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.concurrent.ConcurrentHashMap;
import javax.ws.rs.ext.ParamConverter;
import javax.ws.rs.ext.ParamConverterProvider;
import javax.ws.rs.ext.Provider;
import javax.xml.bind.annotation.adapters.XmlAdapter;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
@Provider
public class XmlAdapterParamConverterProvider implements ParamConverterProvider {
private final ConcurrentHashMap<Class<? extends XmlAdapter>, ParamConverter<?>> CONVERTER_MAP = new ConcurrentHashMap<>();
@Override
public <T> ParamConverter<T> getConverter (final Class<T> rawType, final Type genericType, final Annotation[] annotations) {
for (Annotation annotation : annotations) {
if (annotation.annotationType().equals(XmlJavaTypeAdapter.class)) {
Class<? extends XmlAdapter> xmlAdapterClass;
if ((xmlAdapterClass = ((XmlJavaTypeAdapter)annotation).value()) != null) {
ParamConverter<?> paramConverter;
if ((paramConverter = CONVERTER_MAP.get(xmlAdapterClass)) == null) {
synchronized (CONVERTER_MAP) {
if ((paramConverter = CONVERTER_MAP.get(xmlAdapterClass)) == null) {
try {
CONVERTER_MAP.put(xmlAdapterClass, new XmlAdapterParamConverter<T>(xmlAdapterClass.newInstance()));
} catch (InstantiationException | IllegalAccessException exception) {
throw new XmlAdapterParamConversionException(exception);
}
}
}
}
return (ParamConverter<T>)paramConverter;
}
}
}
return null;
}
private class XmlAdapterParamConverter<T> implements ParamConverter<T> {
private XmlAdapter<String, T> xmlAdapter;
public XmlAdapterParamConverter (XmlAdapter<String, T> xmlAdapter) {
this.xmlAdapter = xmlAdapter;
}
@Override
public T fromString (String value) {
try {
return xmlAdapter.unmarshal(value);
} catch (Exception exception) {
throw new XmlAdapterParamConversionException(exception);
}
}
@Override
public String toString (T value) {
try {
return xmlAdapter.marshal(value);
} catch (Exception exception) {
throw new XmlAdapterParamConversionException(exception);
}
}
}
}