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233 lines (200 loc) · 6.43 KB
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using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Data.Entity.Validation;
using System.Linq;
using Nop.Core;
using Nop.Core.Data;
namespace Nop.Data
{
/// <summary>
/// Entity Framework repository
/// </summary>
public partial class EfRepository<T> : IRepository<T> where T : BaseEntity
{
#region Fields
private readonly IDbContext _context;
private IDbSet<T> _entities;
#endregion
#region Ctor
/// <summary>
/// Ctor
/// </summary>
/// <param name="context">Object context</param>
public EfRepository(IDbContext context)
{
this._context = context;
}
#endregion
#region Utilities
/// <summary>
/// Get full error
/// </summary>
/// <param name="exc">Exception</param>
/// <returns>Error</returns>
protected string GetFullErrorText(DbEntityValidationException exc)
{
var msg = string.Empty;
foreach (var validationErrors in exc.EntityValidationErrors)
foreach (var error in validationErrors.ValidationErrors)
msg += string.Format("Property: {0} Error: {1}", error.PropertyName, error.ErrorMessage) + Environment.NewLine;
return msg;
}
#endregion
#region Methods
/// <summary>
/// Get entity by identifier
/// </summary>
/// <param name="id">Identifier</param>
/// <returns>Entity</returns>
public virtual T GetById(object id)
{
//see some suggested performance optimization (not tested)
//http://stackoverflow.com/questions/11686225/dbset-find-method-ridiculously-slow-compared-to-singleordefault-on-id/11688189#comment34876113_11688189
return this.Entities.Find(id);
}
/// <summary>
/// Insert entity
/// </summary>
/// <param name="entity">Entity</param>
public virtual void Insert(T entity)
{
try
{
if (entity == null)
throw new ArgumentNullException("entity");
this.Entities.Add(entity);
this._context.SaveChanges();
}
catch (DbEntityValidationException dbEx)
{
throw new Exception(GetFullErrorText(dbEx), dbEx);
}
}
/// <summary>
/// Insert entities
/// </summary>
/// <param name="entities">Entities</param>
public virtual void Insert(IEnumerable<T> entities)
{
try
{
if (entities == null)
throw new ArgumentNullException("entities");
foreach (var entity in entities)
this.Entities.Add(entity);
this._context.SaveChanges();
}
catch (DbEntityValidationException dbEx)
{
throw new Exception(GetFullErrorText(dbEx), dbEx);
}
}
/// <summary>
/// Update entity
/// </summary>
/// <param name="entity">Entity</param>
public virtual void Update(T entity)
{
try
{
if (entity == null)
throw new ArgumentNullException("entity");
this._context.SaveChanges();
}
catch (DbEntityValidationException dbEx)
{
throw new Exception(GetFullErrorText(dbEx), dbEx);
}
}
/// <summary>
/// Update entities
/// </summary>
/// <param name="entities">Entities</param>
public virtual void Update(IEnumerable<T> entities)
{
try
{
if (entities == null)
throw new ArgumentNullException("entities");
this._context.SaveChanges();
}
catch (DbEntityValidationException dbEx)
{
throw new Exception(GetFullErrorText(dbEx), dbEx);
}
}
/// <summary>
/// Delete entity
/// </summary>
/// <param name="entity">Entity</param>
public virtual void Delete(T entity)
{
try
{
if (entity == null)
throw new ArgumentNullException("entity");
this.Entities.Remove(entity);
this._context.SaveChanges();
}
catch (DbEntityValidationException dbEx)
{
throw new Exception(GetFullErrorText(dbEx), dbEx);
}
}
/// <summary>
/// Delete entities
/// </summary>
/// <param name="entities">Entities</param>
public virtual void Delete(IEnumerable<T> entities)
{
try
{
if (entities == null)
throw new ArgumentNullException("entities");
foreach (var entity in entities)
this.Entities.Remove(entity);
this._context.SaveChanges();
}
catch (DbEntityValidationException dbEx)
{
throw new Exception(GetFullErrorText(dbEx), dbEx);
}
}
#endregion
#region Properties
/// <summary>
/// Gets a table
/// </summary>
public virtual IQueryable<T> Table
{
get
{
return this.Entities;
}
}
/// <summary>
/// Gets a table with "no tracking" enabled (EF feature) Use it only when you load record(s) only for read-only operations
/// </summary>
public virtual IQueryable<T> TableNoTracking
{
get
{
return this.Entities.AsNoTracking();
}
}
/// <summary>
/// Entities
/// </summary>
protected virtual IDbSet<T> Entities
{
get
{
if (_entities == null)
_entities = _context.Set<T>();
return _entities;
}
}
#endregion
}
}