public async Task <IEnumerable <Vehicle> > GetVehicles(VehicleQuery queryObj)
{
if (queryObj is null)
{
throw new ArgumentNullException(nameof(queryObj));
}
var query = context.Vehicles
.Include(v => v.Features)
.ThenInclude(vf => vf.Feature)
.Include(v => v.Model)
.ThenInclude(m => m.Make)
.AsQueryable();
if (queryObj.MakeId.HasValue)
{
query = query.Where(q => q.Model.MakeId == queryObj.MakeId.Value);
}
//Expression<Func<Vehicle, object>> exp; prikaz kako smo napravili expression
var columnsMap = new Dictionary <string, Expression <Func <Vehicle, object> > >()
{
["make"] = v => v.Model.Make.Name,
["model"] = v => v.Model.Name,
["contactName"] = v => v.ContactName,
["id"] = v => v.Id
};
query = query.ApplyOrdering(queryObj, columnsMap);
query = query.ApplyPaging(queryObj);
return(await query.ToListAsync());
}
public async Task <QueryResult <Vehicle> > GetVehicles(VehicleQuery queryObj)
{
var result = new QueryResult <Vehicle>();
var query = context.Vehicles
.Include(v => v.Model)
.ThenInclude(m => m.Make)
.AsQueryable();
query = query.ApplyFiltering(queryObj);
var columnsMap = new Dictionary <string, Expression <Func <Vehicle, object> > >()
{
["make"] = v => v.Model.Make.Name,
["model"] = v => v.Model.Name,
["contactName"] = v => v.ContactName
};
query = query.ApplyOrdering(queryObj, columnsMap);
result.TotalItems = await query.CountAsync();
query = query.ApplyPaging(queryObj);
result.Items = await query.ToListAsync();
return(result);
}
public async Task <QueryResult <Vehicle> > GetVehicles(VehicleQuery queryObj)
{
var result = new QueryResult <Vehicle>();
var query = _context.Vehicles.Include(f => f.Features)
.ThenInclude(vf => vf.Feature).Include(v => v.Model).ThenInclude(m => m.Make.Models).AsQueryable();
if (queryObj.MakeId.HasValue)
{
query = query.Where(v => v.Model.MakeId == queryObj.MakeId);
}
if (queryObj.ModelId.HasValue)
{
query = query.Where(v => v.Model.Id == queryObj.ModelId);
}
var columnsMap = new Dictionary <string, Expression <Func <Vehicle, Object> > >
{
["make"] = v => v.Model.Make.Name,
["model"] = v => v.Model.Name,
["contactName"] = v => v.ContactName,
};
result.TotalItems = await query.CountAsync();
query = query.ApplyOrdering(queryObj, columnsMap);
query = query.ApplyPaging(queryObj);
result.Items = await query.ToListAsync();
return(result);
}
public async Task<QueryResult<Vehicle>> GetVehicles(VehicleQuery queryObj)
{
var result = new QueryResult<Vehicle>();
var query = vegaDbContext.Vehicle
.Include(v => v.Model)
.ThenInclude(m => m.Make)
.Include(v => v.Features)
.ThenInclude(vf => vf.Feature)
.AsQueryable();
if (queryObj.MakeId.HasValue)
query = query.Where(v => v.Model.MakeId == queryObj.MakeId);
if (queryObj.ModelId.HasValue)
query = query.Where(v => v.ModelId == queryObj.ModelId);
var columnsMap = new Dictionary<string, Expression<Func<Vehicle, object>>>()
{
["make"] = v => v.Model.Make.Name,
["model"] = v => v.Model.Name,
// ["contactName"] = v => v.Contact.Name,
//["id"] = v => v.Id NOTE EF auto adds Id if not existing here!
};
query = query.ApplyOrdering(queryObj, columnsMap);
result.TotalItems = await query.CountAsync();
query = query.ApplyPaging(queryObj);
result.Items = await query.ToListAsync();
return result;
}
public async Task <QueryResult <Vehicle> > GetVehicles(VehicleQuery queryObj)
{
var result = new QueryResult <Vehicle>();
var query = context.Vehicles
.Include(v => v.Model)
.ThenInclude(m => m.Make)
.Include(f => f.Features)
.ThenInclude(vf => vf.Feature)
.AsQueryable();
if (queryObj.MakeId.HasValue)
{
query = query.Where(v => v.Model.MakeId == queryObj.MakeId);
}
var columnMap = new Dictionary <string, Expression <Func <Vehicle, object> > >()
{
["make"] = v => v.Model.Make.Name,
["model"] = v => v.Model.Name,
["contactName"] = v => v.ContactName,
// ["id"] = v => v.Id, //ลบออกเพราะ sort แล้วจะ error เพราะ entity framwork เป็นตัว gen id จะไม่ยอมให้ client sort ได้
};
query = query.ApplyOrdering(queryObj, columnMap);
result.TotalItems = await query.CountAsync();
query = query.ApplyPaging(queryObj);
result.Items = await query.ToListAsync();
return(result);
}
private IQueryable <Vehicle> ApplyFiltering(VehicleQuery queryObj, IQueryable <Vehicle> query)
{
if (queryObj.MakeId.HasValue)
{
query = query.Where(v => v.Model.MakeId == queryObj.MakeId.Value);
}
if (queryObj.ModelId.HasValue)
{
query = query.Where(v => v.Model.Id == queryObj.ModelId.Value);
}
return(query);
}
public async Task <QueryResult <Vehicle> > GetVehicles(VehicleQuery queryObj)
{
var result = new QueryResult <Vehicle>();
var query = context.Vehicles
.Include(v => v.Model)
.ThenInclude(m => m.Make)
.Include(v => v.Features)
.ThenInclude(vf => vf.Feature)
.AsQueryable();
// filtering
if (queryObj.MakeId.HasValue)
{
query = query.Where(v => v.Model.MakeId == queryObj.MakeId);
}
if (queryObj.ModelId.HasValue)
{
query = query.Where(v => v.ModelId == queryObj.ModelId);
}
// sorting - poor way
var columnMap = new Dictionary <string, Expression <Func <Vehicle, object> > >()
{
// the way provided in C#6
["make"] = v => v.Model.Make.Name
, ["model"] = v => v.Model.Name
, ["contactName"] = v => v.ContactName
// , ["id"] = v => v.Id, // EF add sorty by id by itself, so we can't use it ()
};
// the old way
// columnMap.Add("make", v => v.Model.Make.Name);
// columnMap.Add("model", v => v.Model.Name);
// columnMap.Add("contactName", v => v.ContactName);
// columnMap.Add("id", v => v.Id);
query = query.ApplyOrdering(queryObj, columnMap);
// total
result.TotalItems = await query.CountAsync();
// pagging
query = query.ApplyPaging(queryObj);
result.Items = await query.ToListAsync();
return(result);
}
public async Task <QueryResult <Vehicle> > GetAllAsync(VehicleQuery query = null)
{
var result = new QueryResult <Vehicle>();
var queryable = this.context.Vehicles
.Include(v => v.Model)
.ThenInclude(m => m.Make)
.Include(v => v.Features)
.ThenInclude(vf => vf.Feature)
.AsQueryable();
// apply query attributes
if (query != null)
{
if (query.MakeId.HasValue)
{
queryable = queryable.Where(v => v.Model.MakeId == query.MakeId.Value);
}
if (query.ModelId.HasValue)
{
queryable = queryable.Where(v => v.Model.Id == query.ModelId.Value);
}
// get total item count *before* applying paging options
result.TotalItems = await queryable.CountAsync();
queryable = queryable
.ApplyOrdering(query, this.vehicleFieldExpressionMap)
.ApplyPaging(query);
}
else
{
result.TotalItems = await queryable.CountAsync();
}
result.Items = await queryable.ToArrayAsync();
return(result);
}
public async Task <QueryResult <Vehicle> > GetVehiclesAsync(VehicleQuery vehicleQuery)
{
var result = new QueryResult <Vehicle>();
var query = context.Vehicle
.Include(v => v.Features)
.ThenInclude(f => f.Feature)
.Include(v => v.Model)
.ThenInclude(m => m.Make)
.AsQueryable();
if (vehicleQuery.MakeId.HasValue)
{
query = query.Where(v => v.Model.Make.Id == vehicleQuery.MakeId.Value);
}
if (vehicleQuery.ModelId.HasValue)
{
query = query.Where(v => v.Model.Id == vehicleQuery.ModelId.Value);
}
var ColumnsMap = new Dictionary <string, Expression <Func <Vehicle, object> > >()
{
["Make"] = v => v.Model.Make.Name,
["Model"] = v => v.Model.Name,
["ContactName"] = v => v.ContactName,
["Id"] = v => v.Id
};
query = query.ApplyOrdering(vehicleQuery, ColumnsMap);
result.TotalItems = await query.CountAsync();
query = query.ApplyPaging(vehicleQuery);
result.Items = await query.ToListAsync();
return(result);
}
