Handlers · 2 min read

XmlToXElementPropertyHandler

A property handler that maps the SQL Server xml type into an XElement property.

A property handler that maps the SQL Server xml type, which the database returns as a string, into an XElement property.

Overview

Name	Description
Class	`XmlToXElementPropertyHandler`
Namespace	`RepoDb.PropertyHandlers`
Package	RepoDb
Implements	IPropertyHandler`<string, XElement>`
Column type	The SQL Server `xml` type, returned by the database as a `string`
Property type	`XElement`

Conversions

Method	Direction	Description
Get	Database to property	Parses the XML text via `XElement.Parse()`. A `null` or an empty value is returned as `null`.
Set	Property to database	Converts the `XElement` into its unformatted XML text via `ToString(SaveOptions.DisableFormatting)`. A `null` value is written as `null`.

Usability

Bind the handler to the property that maps to an xml column.

Attribute

public class Document
{
    public int Id { get; set; }

    [Map("content"), PropertyHandler(typeof(XmlToXElementPropertyHandler))]
    public XElement Content { get; set; }
}

Once bound, the library invokes the handler automatically when the property is read or written.

using (var connection = new SqlConnection(connectionString))
{
    var content = XElement.Parse("<root><item id=\"1\" /></root>");
    connection.Insert(new Document { Id = 1, Content = content });
    var document = connection.Query<Document>(e => e.Id == 1).First();
}

Fluent Mapping

To configure via FluentMapper:

FluentMapper
    .Entity<Document>()
    .PropertyHandler<XmlToXElementPropertyHandler>(e => e.Content);

Property Level Mapping

To configure via PropertyHandlerMapper:

PropertyHandlerMapper.Add<Document, XmlToXElementPropertyHandler>(e => e.Content, new XmlToXElementPropertyHandler(), true);

Type Level Mapping

To apply the handler to every property of the type XElement:

PropertyHandlerMapper.Add<XElement, XmlToXElementPropertyHandler>(new XmlToXElementPropertyHandler(), true);