Sonarr/NzbDrone.Core/Datastore/BasicRepository.cs

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using System;
using System.Collections.Generic;
using System.Data;
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using System.Linq;
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using System.Linq.Expressions;
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using Marr.Data;
using Marr.Data.QGen;
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using NzbDrone.Core.Tv;
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namespace NzbDrone.Core.Datastore
{
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public interface IBasicRepository<TModel> where TModel : ModelBase, new()
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{
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IEnumerable<TModel> All();
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int Count();
TModel Get(int id);
TModel SingleOrDefault();
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TModel Insert(TModel model);
TModel Update(TModel model);
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TModel Upsert(TModel model);
void Delete(int id);
void Delete(TModel model);
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void InsertMany(IList<TModel> model);
void UpdateMany(IList<TModel> model);
void DeleteMany(List<TModel> model);
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void Purge();
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bool HasItems();
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void DeleteMany(IEnumerable<int> ids);
void SetFields(TModel model, params Expression<Func<TModel, object>>[] properties);
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}
public class BasicRepository<TModel> : IBasicRepository<TModel> where TModel : ModelBase, new()
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{
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private readonly IDataMapper _dataMapper;
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public BasicRepository(IDatabase database)
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{
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_dataMapper = database.DataMapper;
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}
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protected QueryBuilder<TModel> Query
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{
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get { return _dataMapper.Query<TModel>(); }
}
protected void Delete(Expression<Func<TModel, bool>> filter)
{
_dataMapper.Delete(filter);
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}
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public IEnumerable<TModel> All()
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{
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return _dataMapper.Query<TModel>().ToList();
}
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public int Count()
{
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return _dataMapper.Query<TModel>().Count();
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}
public TModel Get(int id)
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{
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return _dataMapper.Query<TModel>().Single(c => c.Id == id);
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}
public TModel SingleOrDefault()
{
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return All().Single();
}
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public TModel Insert(TModel model)
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{
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if (model.Id != 0)
{
throw new InvalidOperationException("Can't insert model with existing ID");
}
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var id = _dataMapper.Insert(model);
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return model;
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}
public TModel Update(TModel model)
{
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if (model.Id == 0)
{
throw new InvalidOperationException("Can't update model with ID 0");
}
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_dataMapper.Update(model, c => c.Id == model.Id);
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return model;
}
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public void Delete(TModel model)
{
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_dataMapper.Delete<TModel>(c => c.Id == model.Id);
}
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public void InsertMany(IList<TModel> models)
{
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foreach (var model in models)
{
Insert(model);
}
}
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public void UpdateMany(IList<TModel> models)
{
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foreach (var model in models)
{
Update(model);
}
}
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public void DeleteMany(List<TModel> models)
{
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models.ForEach(Delete);
}
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public TModel Upsert(TModel model)
{
if (model.Id == 0)
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{
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Insert(model);
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return model;
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}
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Update(model);
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return model;
}
public void Delete(int id)
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{
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_dataMapper.Delete<TModel>(c => c.Id == id);
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}
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public void DeleteMany(IEnumerable<int> ids)
{
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ids.ToList().ForEach(Delete);
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}
public void Purge()
{
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_dataMapper.Delete<TModel>(c => c.Id > -1);
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}
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public bool HasItems()
{
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return Count() > 0;
}
public void SetFields(TModel model, params Expression<Func<TModel, object>>[] properties)
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{
if (model.Id == 0)
{
throw new InvalidOperationException("Attempted to updated model without ID");
}
_dataMapper.Update<TModel>()
.Where(c => c.Id == model.Id)
.ColumnsIncluding(properties)
.Entity(model)
.Execute();
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}
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}
}