todos.JpaPersistenceCallback.java Source code

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Here is the source code for todos.JpaPersistenceCallback.java

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/*
 * 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 todos;

import java.util.List;

import org.springframework.data.domain.Sort;
import org.springframework.data.repository.PagingAndSortingRepository;
import org.springframework.sync.diffsync.PersistenceCallback;

class JpaPersistenceCallback<T> implements PersistenceCallback<T> {

    private final PagingAndSortingRepository<T, Long> repo;
    private Class<T> entityType;

    public JpaPersistenceCallback(PagingAndSortingRepository<T, Long> repo, Class<T> entityType) {
        this.repo = repo;
        this.entityType = entityType;
    }

    @Override
    public List<T> findAll() {
        return (List<T>) repo.findAll(new Sort("id"));
    }

    @Override
    public T findOne(String id) {
        return repo.findOne(Long.valueOf(id));
    }

    @Override
    public void persistChange(T itemToSave) {
        repo.save(itemToSave);
    }

    @Override
    public void persistChanges(List<T> itemsToSave, List<T> itemsToDelete) {
        repo.save(itemsToSave);
        repo.delete(itemsToDelete);
    }

    @Override
    public Class<T> getEntityType() {
        return entityType;
    }

}