/*
* Copyright 2002-2013 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 org.springframework.xd.store;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import org.springframework.data.repository.CrudRepository;
/**
* Helper class for repositories, implementing some behavior in terms of unit methods. Implementations that can perform
* operations in bulk are encouraged to override methods implemented here.
*
* @author Eric Bottard
*/
public abstract class AbstractRepository<T, ID extends Serializable> implements CrudRepository<T, ID> {
@Override
public <S extends T> Iterable<S> save(Iterable<S> entities) {
List<S> result = new ArrayList<S>();
for (S entity : entities) {
result.add(save(entity));
}
return result;
}
@Override
public boolean exists(ID id) {
return findOne(id) != null;
}
@Override
public Iterable<T> findAll(Iterable<ID> ids) {
List<T> result = new ArrayList<T>();
for (ID id : ids) {
T found = findOne(id);
if (found != null) {
result.add(found);
}
}
return result;
}
@Override
public void delete(Iterable<? extends T> entities) {
for (T entity : entities) {
delete(entity);
}
}
}