ninja.leaping.configurate.objectmapping.GuiceObjectMapper Maven / Gradle / Ivy
/**
* Configurate
* Copyright (C) zml and Configurate contributors
*
* 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 ninja.leaping.configurate.objectmapping;
import com.google.inject.ConfigurationException;
import com.google.inject.Injector;
import com.google.inject.Key;
/**
* This subclass creates new object instances using a provided Injector to allow configuration objects to take
* additional arguments with Guice. Instances of this object should be reached using a {@link GuiceObjectMapperFactory}.
*/
class GuiceObjectMapper extends ObjectMapper {
private final Injector injector;
private final Key typeKey;
/**
* Create a new object mapper of a given type
*
* @param clazz The type this object mapper will work with
* @throws ObjectMappingException if the provided class is in someway invalid
*/
protected GuiceObjectMapper(Injector injector, Class clazz) throws ObjectMappingException {
super(clazz);
this.injector = injector;
this.typeKey = Key.get(clazz);
}
@Override
public boolean canCreateInstances() {
try {
injector.getProvider(typeKey);
return true;
} catch (ConfigurationException ex) {
return false;
}
}
@Override
protected T constructObject() throws ObjectMappingException {
return injector.getInstance(this.typeKey);
}
}