/*
* Copyright 2011 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 com.jayway.jsonpath.internal.spi.mapper;
import com.google.gson.Gson;
import com.google.gson.JsonElement;
import com.google.gson.JsonSyntaxException;
import com.google.gson.reflect.TypeToken;
import com.jayway.jsonpath.Configuration;
import com.jayway.jsonpath.JsonPathException;
import com.jayway.jsonpath.TypeRef;
import com.jayway.jsonpath.spi.mapper.MappingException;
import com.jayway.jsonpath.spi.mapper.MappingProvider;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class GsonMappingProvider implements MappingProvider {
private static final Logger logger = LoggerFactory.getLogger(GsonMappingProvider.class);
private final Factory<Gson> factory;
public GsonMappingProvider(final Gson gson) {
this(new Factory<Gson>() {
@Override
public Gson createInstance() {
return gson;
}
});
}
public GsonMappingProvider(Factory<Gson> factory) {
this.factory = factory;
}
public GsonMappingProvider() {
super();
try {
Class.forName("com.google.gson.Gson");
this.factory = new Factory<Gson>() {
@Override
public Gson createInstance() {
return new Gson();
}
};
} catch (ClassNotFoundException e) {
logger.error("Gson not found on class path. No converters configured.");
throw new JsonPathException("Gson not found on path", e);
}
}
@Override
public <T> T map(Object source, Class<T> targetType, Configuration configuration) {
try {
return factory.createInstance().getAdapter(targetType).fromJsonTree((JsonElement) source);
} catch (Exception e){
throw new MappingException(e);
}
}
@Override
public <T> T map(Object source, TypeRef<T> targetType, Configuration configuration) {
try {
return (T) factory.createInstance().getAdapter(TypeToken.get(targetType.getType())).fromJsonTree((JsonElement) source);
} catch (Exception e){
throw new MappingException(e);
}
}
}