Specifies a namespace allowing types within it to be referred by their unqualified short type names.

namespace

A namespace name to be used as implicit type name qualifier for type references.

Remarks

The <Using> element can be used in a manner similar to the using directive in C#. When schema compiler encounters an unqualified type name in the schema definition file, the namespaces specified in one or more using directives are used to resolve the type reference.

If the type name is the full name of a class in one of the referenced assemblies, the type reference is resolved to this class. If the type name is ambiguous as regards the namespaces, the schema compiler throws a compilation error.

Examples

<Mapping xmlns="urn:TechTalk:TT.OODAL.XmlMapping">
    ...
    <Using namespace="System" />
    <Using namespace="Northwind.Business" />

    <Type name="Employee">
            <!-- reference to Northwind.Business.Employee type with short name -->
        ...
    </Type> 

    <Type name="Northwind.Business.Order">
            <!-- reference to Northwind.Business.Order type with full name -->
        ...
    </Type> 

    <Type name="Type">
            <!-- This is an ambiguous reference bacause there is a "Type" enum created 
                 in the Northwind.Business namespace and it conflicts with System.Type. -->
        ...
    </Type> 

</Mapping>
                

Requirements

Type: TechTalk.Genome.Schema.Builder.Xml.UsingXmlData

Assembly: TechTalk.Genome.dll

Version: 4.2.4

Editions: Professional, Evaluation, Express

Database Platforms: Microsoft SQL Server 2000, Microsoft SQL Server 2005, Oracle 9i Release 2, Oracle 10g Release 2

See Also

<Mapping> Element | <Reference> Element