package org.jtheque.persistence.utils;
/*
* Copyright JTheque (Baptiste Wicht)
*
* 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.
*/
import org.jtheque.persistence.Entity;
import org.jtheque.utils.annotations.ThreadSafe;
import java.util.Collection;
/**
* A generic data access object. All the operations are directly made in database with no cache.
*
* @author Baptiste Wicht
* @param <T> The class managed by the dao.
*/
@ThreadSafe
public abstract class SimpleJDBCDao<T extends Entity> extends AbstractDao<T> {
/**
* Construct a new CachedJDBCDao.
*
* @param table The database Table.
*/
protected SimpleJDBCDao(String table) {
super(table);
}
@Override
public final Collection<T> getAll() {
return getContext().getSortedList(getTable(), getRowMapper());
}
@Override
public final T get(int id) {
return getContext().getDataByID(getTable(), id, getRowMapper());
}
@Override
public boolean exists(int id) {
return get(id) != null;
}
@Override
public boolean exists(T entity) {
return exists(entity.getId());
}
@Override
public void save(T entity) {
getContext().saveOrUpdate(entity, getQueryMapper());
fireDataChanged();
}
@Override
public boolean delete(T entity) {
return delete(entity.getId());
}
@Override
public boolean delete(int id) {
boolean deleted = getContext().delete(getTable(), id);
if (deleted) {
fireDataChanged();
}
return deleted;
}
/**
* Delete all the entities.
*/
@Override
public final void clearAll() {
getContext().deleteAll(getTable());
}
}