using System;
using System.Collections.Generic;

namespace ET.Server
{
    public interface IDBComponent
    {
        ETTask Save<T>(long entityId, T entity) where T : class;

        ETTask<T> QueryByEntityId<T>(long entityId) where T : class;

        ETTask<List<T>> Query<T>(Func<T, bool> predicate = null) where T : class;

        ETTask Update<T>(long entityId, T entity) where T : class;

        ETTask Delete<T>(long entityId) where T : class;
    }
}