/// <summary>
/// Converts attribute model with type <see cref="DCConstants.DCAttributeFilterTypeId"/> to <see cref="Select"/>.
/// </summary>
/// <param name="model">Extensible model object.</param>
/// <param name="userConnection">User connection.</param>
/// <returns>Converted <see cref="Select"/> object when attribute is filter and value is correct
/// search data string. And null in othervise.</returns>
public static Select ToFilter(this DCAttributeModel model, UserConnection userConnection)
{
model.CheckArgumentNull(nameof(model));
userConnection.CheckArgumentNull(nameof(userConnection));
if (!model.IsFilter())
{
return(null);
}
var dataSourceFilters = Json.Deserialize <Nui.ServiceModel.DataContract.Filters>(model.Value);
var esq = new EntitySchemaQuery(userConnection.EntitySchemaManager, dataSourceFilters.RootSchemaName);
esq.AddColumn(esq.RootSchema.GetPrimaryColumnName());
IEntitySchemaQueryFilterItem filters = dataSourceFilters.BuildEsqFilter(esq.RootSchema.UId, userConnection);
CommonUtilities.DisableEmptyEntitySchemaQueryFilters(new[] { filters });
if (filters != null)
{
esq.Filters.Add(filters);
}
return(esq.GetSelectQuery(userConnection));
}
/// <summary>
/// Determines whether the attribute is a filter.
/// </summary>
/// <param name="model">Extensible model object.</param>
/// <returns>Returns true when <paramref name="model"/> has type
/// <see cref="DCConstants.DCAttributeFilterTypeId"/>. And false in otherwise.</returns>
public static bool IsFilter(this DCAttributeModel model)
{
model.CheckArgumentNull(nameof(model));
return(model.TypeId == DCConstants.DCAttributeFilterTypeId);
}
