JoinTable Class
NPersistence Reference Guide
Used in the mapping of associations. It is specified on the owning side of an association.

A join table is typically used in the mapping of many-to-many and unidirectional one-to-many associations. It may also be used to map bidirectional many-to-one/one-to-many associations, unidirectional many-to-one relationships, and one-to-one associations (both bidirectional and unidirectional).

When a join table is used in mapping a relationship with an embeddable class on the owning side of the relationship, the containing entity rather than the embeddable class is considered the owner of the relationship.

If the JoinTable annotation is missing, the default values of the annotation elements apply. The name of the join table is assumed to be the table names of the associated primary tables concatenated together (owning side first) using an underscore.

Examples

CopyC#
Example:

[JoinTable(name="CUST_PHONE")]
   [JoinColumn(AttributeRef="CUST_PHONE",name="CUST_ID", referencedColumnName="ID")]
   [JoinColumn(AttributeRef="CUST_PHONE",name="PHONE_ID", referencedColumnName="ID", Inverse=true)]
)

Namespace: NPersistence
Assembly: NPersistence (in NPersistence.dll) Version: 2.0.0.0 (2.0.0.0)

Syntax

   
 C# 
public sealed class JoinTable : Attribute

Members

         
 All Members  Constructors   Fields  
 Public

 Protected
 Instance

 Static 
 Declared

 Inherited
 XNA Framework Only 

 .NET Compact Framework Only 

 MemberDescription
JoinTable()()()()
Initializes a new instance of the JoinTable class
AssociationOverrideRef
(Optional) determines that this join table belongs to an AssociationOverride definition. If populated, this join table overrides a mapping of a relationship. The joinTable element must be specified if a join table is used in the overriding of the mapping of the relationship. The joinTable element must not be specified if a foreign key mapping is used in the overriding of the relationship.
Catalog
(Optional) The catalog of the table. Defaults to the default catalog.
Name
(Optional) The name of the join table. Defaults to the concatenated names of the two associated primary entity tables, separated by an underscore.
Schema
(Optional) The schema of the table. Defaults to the default schema for user.

Inheritance Hierarchy

System..::..Object
  System..::..Attribute
    NPersistence..::..JoinTable

See Also