Configuring an EIS One-to-One Mapping (ELUG)

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For information on how to create EclipseLink mappings, see Creating a Mapping.

This table lists the configurable options for an EIS one-to-one mapping.


Option to Configure Workbench
Java

Reference descriptors

Supported

Supported

Foreign key pairs

Supported

Supported

Bidirectional relationship

Supported

Supported

Method or direct field access at the mapping level

Supported

Supported

Read-only mappings

Supported

Supported

Private or independent relationships

Supported

Supported

Indirection (lazy loading)

Supported

Supported

Mapping comments

Supported

Supported

Selection interaction

Supported

Supported


For more information, see the following:


Configuring Foreign Key Pairs

In a one-to-one EIS mapping, you relate a source object attribute to a target object attribute by specifying one or more pairs of source and target object fields.

In a one-to-one EIS mapping with key on source (see EIS One-to-One Mappings with Key on Source) using XML records, EclipseLink puts the target XML field value into the source object's record as a simple value.

In a one-to-one EIS mapping with key on target (see EIS One-to-One Mappings with Key on Target) using XML records, EclipseLink uses the source XML field value in the selection interaction to acquire the appropriate instance of target object.


How to Configure Foreign Key Pairs Using Workbench

To specify the source and target XML field pairs for a one-to-one EIS mapping, use this procedure:

  1. Select the one-to-one EIS mapping in the Navigator. Its properties appear in the Editor.
  2. Click the General tab. The General tab opens.
    General Tab, Foreign Keys Field
    General Tab, Foreign Keys Field

  3. Click Add in the Foreign Keys area to add a key pair. The Specify Field Pair dialog box appears.
    Specify Field Pair Dialog Box
    Specify Field Pair Dialog Box

  4. Click Browse to add a foreign key for the Source XPath and Target XPath fields.




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