/*
* Copyright 2014 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 ratpack.spring.internal;
import com.google.common.base.Supplier;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.ImmutableList;
import com.google.common.reflect.TypeToken;
import org.springframework.beans.factory.BeanFactoryUtils;
import org.springframework.beans.factory.ListableBeanFactory;
import ratpack.registry.RegistryBacking;
import ratpack.util.Types;
public class SpringRegistryBacking implements RegistryBacking {
private final ListableBeanFactory beanFactory;
public SpringRegistryBacking(ListableBeanFactory beanFactory) {
this.beanFactory = beanFactory;
}
@Override
public <T> Iterable<Supplier<? extends T>> provide(TypeToken<T> type) {
return FluentIterable.from(
ImmutableList.copyOf(
BeanFactoryUtils.beanNamesForTypeIncludingAncestors(beanFactory, type.getRawType())
).reverse()
).transform(beanName ->
() -> Types.cast(beanFactory.getBean(beanName))
);
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
SpringRegistryBacking that = (SpringRegistryBacking) o;
return beanFactory.equals(that.beanFactory);
}
@Override
public int hashCode() {
return beanFactory.hashCode();
}
}