/*
* This is eMonocot, a global online biodiversity information resource.
*
* Copyright © 2011–2015 The Board of Trustees of the Royal Botanic Gardens, Kew and The University of Oxford
*
* eMonocot is free software: you can redistribute it and/or modify it under the terms of the
* 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.
*
* eMonocot 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 Affero General Public License for more details.
*
* The complete text of the GNU Affero General Public License is in the source repository as the file
* ‘COPYING’. It is also available from <http://www.gnu.org/licenses/>.
*/
package org.emonocot.model.marshall.json;
import java.io.IOException;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import org.emonocot.api.Service;
import org.emonocot.model.Base;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
* @author ben
*
* @param <T>
*/
public abstract class BaseDeserializer<T extends Base> extends
JsonDeserializer<T> {
private static Logger logger = LoggerFactory.getLogger(BaseDeserializer.class);
/**
*
*/
protected Service<T> service;
/**
*
*/
protected Class<T> type;
/**
*
* @param newType Set the type
*/
public BaseDeserializer(final Class<T> newType) {
type = newType;
}
/**
*
* @param newService
* Set the service
*/
public final void setService(final Service<T> newService) {
this.service = newService;
}
@Override
public T deserialize(final JsonParser jsonParser,
final DeserializationContext deserializationContext)
throws IOException {
String identifier = jsonParser.getText();
/**
* Hack for now should allow client side to
* set "return lazy initialized proxy objs"
*/
if (service != null) {
logger.debug("service is not null, returning object");
return service.load(identifier);
} else {
try {
logger.debug("service is null, returning new object");
T t = type.newInstance();
t.setIdentifier(identifier);
return t;
} catch (InstantiationException ie) {
throw new JsonParseException(ie.getMessage(),
jsonParser.getCurrentLocation());
} catch (IllegalAccessException iae) {
throw new JsonParseException(iae.getMessage(),
jsonParser.getCurrentLocation());
}
}
}
}