private static QueryColumn CreateFromAttribute(ActiveColumnAttribute attr, MemberInfo info, TableData parentTable)
{
ForeignColumnAttribute foreignAttr = Attribute.GetCustomAttribute(info, typeof(ForeignColumnAttribute)) as ForeignColumnAttribute;
LocalizableColumnAttribute localizeAttr = Attribute.GetCustomAttribute(info, typeof(LocalizableColumnAttribute)) as LocalizableColumnAttribute;
return(new TableColumnData(parentTable, attr.Name, attr.DbType, attr.MaxLength, attr.ColumnProperties, attr.DefaultValue, null,
foreignAttr == null ? null : Create(foreignAttr), localizeAttr == null ? null : Create(localizeAttr)));
}
internal static IEnumerable <QueryColumn> CreateColumns(TableData parentTable, Type dataRecordType)
{
foreach (PropertyInfo property in dataRecordType.GetProperties(BindingFlags.Public | BindingFlags.Instance))
{
ActiveColumnAttribute attribute = (ActiveColumnAttribute)Attribute.GetCustomAttribute(property, typeof(ActiveColumnAttribute));
if (attribute != null)
{
yield return(CreateFromAttribute(attribute, property, parentTable));
}
}
}
/// <summary>
/// Creates a new <see cref="IQueryableColumn"/> from the supplied <paramref name="dataRecordType"/> and <paramref name="columnName"/>.
/// </summary>
/// <remarks>
/// <para>
/// This overload creates a column from the metadata contained in an <see cref="ActiveColumnAttribute"/>.
/// The attribute should be applied to a member of the type represented by the <paramref name="dataRecordType"/> parameter.</para>
/// <para>
/// The <see cref="Type"/> specified by the <paramref name="dataRecordType"/> will be searched for an <see cref="ActiveColumnAttribute"/>
/// that has a value in the <see cref="DynamicPropertyAttribute.Name"/> property matching the supplied <paramref name="columnName"/>.</para>
/// </remarks>
/// <param name="parentTable">An <see cref="TableData"/> implementation representing the table this column belongs to.</param>
/// <param name="dataRecordType">A <see cref="Type"/> containing a member with an <see cref="ActiveColumnAttribute"/> applied to it.</param>
/// <param name="columnName">The value specified in the <see cref="DynamicPropertyAttribute.Name"/> property of the <see cref="ActiveColumnAttribute"/>
/// applied to the member.</param>
/// <returns>A new <see cref="IQueryableColumn"/>.</returns>
private static QueryColumn Create(TableData parentTable, Type dataRecordType, string columnName)
{
foreach (PropertyInfo property in dataRecordType.GetProperties(BindingFlags.Public | BindingFlags.Instance))
{
ActiveColumnAttribute attribute = (ActiveColumnAttribute)Attribute.GetCustomAttribute(property, typeof(ActiveColumnAttribute));
if (attribute == null || attribute.Name != columnName)
{
continue;
}
return(CreateFromAttribute(attribute, property, parentTable));
}
return(null);
}
