/// <summary>Limits the query results to only the properties that are defined in the specified projection.</summary>
/// <returns>
/// A new <see cref="T:System.Data.Entity.Core.Objects.ObjectQuery`1" /> instance of type
/// <see
/// cref="T:System.Data.Common.DbDataRecord" />
/// that is equivalent to the original instance with SELECT applied.
/// </returns>
/// <param name="projection">The list of selected properties that defines the projection.</param>
/// <param name="parameters">Zero or more parameters that are used in this method.</param>
/// <exception cref="T:System.ArgumentNullException"> projection is null or parameters is null.</exception>
/// <exception cref="T:System.ArgumentException">The projection is an empty string.</exception>
public ObjectQuery <DbDataRecord> Select(string projection, params ObjectParameter[] parameters)
{
Check.NotEmpty(projection, "projection");
Check.NotNull(parameters, "parameters");
return(new ObjectQuery <DbDataRecord>(EntitySqlQueryBuilder.Select(QueryState, Name, projection, parameters)));
}
/// <summary>Limits the query results to only the properties that are defined in the specified projection.</summary>
/// <returns>
/// A new <see cref="T:System.Data.Entity.Core.Objects.ObjectQuery`1" /> instance of type
/// <see cref="T:System.Data.Common.DbDataRecord" />
/// that is equivalent to the original instance with SELECT applied.
/// </returns>
/// <param name="projection">The list of selected properties that defines the projection.</param>
/// <param name="parameters">Zero or more parameters that are used in this method.</param>
/// <exception cref="T:System.ArgumentNullException"> projection is null or parameters is null.</exception>
/// <exception cref="T:System.ArgumentException">The projection is an empty string.</exception>
public ObjectQuery <DbDataRecord> Select(
string projection,
params ObjectParameter[] parameters)
{
Check.NotEmpty(projection, nameof(projection));
Check.NotNull <ObjectParameter[]>(parameters, nameof(parameters));
return(new ObjectQuery <DbDataRecord>(EntitySqlQueryBuilder.Select(this.QueryState, this.Name, projection, parameters)));
}
/// <summary>
/// This query-builder method creates a new query whose results are data
/// records containing selected fields of the results of this query.
/// </summary>
/// <param name="projection">
/// The projection list.
/// </param>
/// <param name="parameters">
/// An optional set of query parameters that should be in scope when parsing.
/// </param>
/// <returns>
/// a new ObjectQuery instance.
/// </returns>
/// <exception cref="ArgumentNullException">
/// If either argument is null.
/// </exception>
/// <exception cref="ArgumentException">
/// If the projection list command text is empty.
/// </exception>
public ObjectQuery <DbDataRecord> Select(string projection, params ObjectParameter[] parameters)
{
EntityUtil.CheckArgumentNull(projection, "projection");
EntityUtil.CheckArgumentNull(parameters, "parameters");
if (StringUtil.IsNullOrEmptyOrWhiteSpace(projection))
{
throw EntityUtil.Argument(System.Data.Entity.Strings.ObjectQuery_QueryBuilder_InvalidProjectionList, "projection");
}
return(new ObjectQuery <DbDataRecord>(EntitySqlQueryBuilder.Select(this.QueryState, this.Name, projection, parameters)));
}
