View source for Configuring an EIS One-to-One Mapping (ELUG)

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For information on how to create EclipseLink mappings, see [[Creating%20a%20Mapping%20(ELUG)#CBBHHHJC|Creating a Mapping]].

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


<span id="Table 79-1"></span>

{| class="RuleFormalMax" dir="ltr" title="Configurable Options for EIS One-to-One Mappings" summary="This table lists the configurable options for EIS One-to-One Mappings and indicates if the option can be configured with the  Workbench, Java, or both." width="100%" border="1" frame="border" rules="all" cellpadding="3" frame="border" rules="all"
|- align="left" valign="top"
! id="r1c1-t2" align="left" valign="bottom" | '''Option to Configure'''
! id="r1c2-t2" align="left" valign="bottom" | '''Workbench<br>'''
! id="r1c3-t2" align="left" valign="bottom" | '''Java'''
|- align="left" valign="top"
| id="r2c1-t2" headers="r1c1-t2" align="left" |
[[Configuring%20an%20EIS%20Mapping%20(ELUG)#Configuring Reference Descriptors|Reference descriptors ]]
| headers="r2c1-t2 r1c2-t2" align="left" |
[[Image:support.gif|Supported]]<br>
| headers="r2c1-t2 r1c3-t2" align="left" |
[[Image:support.gif|Supported]]<br>
|- align="left" valign="top"
| id="r3c1-t2" headers="r1c1-t2" align="left" |
[[#Configuring Foreign Key Pairs|Foreign key pairs ]]
| headers="r3c1-t2 r1c2-t2" align="left" |
[[Image:support.gif|Supported]]<br>
| headers="r3c1-t2 r1c3-t2" align="left" |
[[Image:support.gif|Supported]]<br>
|- align="left" valign="top"
| id="r4c1-t2" headers="r1c1-t2" align="left" |
[[Configuring%20a%20Mapping%20(ELUG)#Configuring Bidirectional Relationship|Bidirectional relationship ]]
| headers="r4c1-t2 r1c2-t2" align="left" |
[[Image:support.gif|Supported]]<br>
| headers="r4c1-t2 r1c3-t2" align="left" |
[[Image:support.gif|Supported]]<br>
|- align="left" valign="top"
| id="r5c1-t2" headers="r1c1-t2" align="left" |
[[Configuring%20a%20Mapping%20(ELUG)#Configuring Method or Direct Field Accessing at the Mapping Level|Method or direct field access at the mapping level ]]
| headers="r5c1-t2 r1c2-t2" align="left" |
[[Image:support.gif|Supported]]<br>
| headers="r5c1-t2 r1c3-t2" align="left" |
[[Image:support.gif|Supported]]<br>
|- align="left" valign="top"
| id="r6c1-t2" headers="r1c1-t2" align="left" |
[[Configuring%20a%20Mapping%20(ELUG)#Configuring Read-Only Mappings|Read-only mappings]]
| headers="r6c1-t2 r1c2-t2" align="left" |
[[Image:support.gif|Supported]]<br>
| headers="r6c1-t2 r1c3-t2" align="left" |
[[Image:support.gif|Supported]]<br>
|- align="left" valign="top"
| id="r7c1-t2" headers="r1c1-t2" align="left" |
[[Configuring%20a%20Mapping%20(ELUG)#Configuring Private or Independent Relationships|Private or independent relationships]]
| headers="r7c1-t2 r1c2-t2" align="left" |
[[Image:support.gif|Supported]]<br>
| headers="r7c1-t2 r1c3-t2" align="left" |
[[Image:support.gif|Supported]]<br>
|- align="left" valign="top"
| id="r8c1-t2" headers="r1c1-t2" align="left" |
[[Configuring%20a%20Mapping%20(ELUG)#Configuring Indirection (Lazy Loading)|Indirection (lazy loading)]]
| headers="r8c1-t2 r1c2-t2" align="left" |
[[Image:support.gif|Supported]]<br>
| headers="r8c1-t2 r1c3-t2" align="left" |
[[Image:support.gif|Supported]]<br>
|- align="left" valign="top"
| id="r9c1-t2" headers="r1c1-t2" align="left" |
[[Configuring%20a%20Mapping%20(ELUG)#Configuring Mapping Comments|Mapping comments]]
| headers="r9c1-t2 r1c2-t2" align="left" |
[[Image:support.gif|Supported]]<br>
| headers="r9c1-t2 r1c3-t2" align="left" |
[[Image:unsupport.gif|Supported]]<br>
|- align="left" valign="top"
| id="r10c1-t2" headers="r1c1-t2" align="left" |
[[Configuring%20an%20EIS%20Mapping%20(ELUG)#Configuring Selection Interaction|Selection interaction]]
| headers="r10c1-t2 r1c2-t2" align="left" |
[[Image:support.gif|Supported]]<br>
| headers="r10c1-t2 r1c3-t2" align="left" |
[[Image:support.gif|Supported]]<br>
|}


For more information, see the following:
* [[Introduction%20to%20EIS%20Mappings%20(ELUG)#EIS One-to-One Mapping|EIS One-to-One Mapping]]
* [[Configuring%20an%20EIS%20Mapping%20(ELUG)#CHDHFGAH|Configuring an EIS Mapping]]
* [[Configuring%20a%20Mapping%20(ELUG)#CEGFEFJG|Configuring a Mapping]]



==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 [[Introduction%20to%20EIS%20Mappings%20(ELUG)#EIS One-to-One Mappings with Key on Source|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 [[Introduction%20to%20EIS%20Mappings%20(ELUG)#EIS One-to-One Mappings with Key on Target|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:
# Select the one-to-one EIS mapping in the '''Navigator'''. Its properties appear in the Editor.
# Click the '''General''' tab. The General tab opens.<br><span id="Figure 79-1"></span>''''' General Tab, Foreign Keys Field'''''<br>[[Image:onetoone_eis_fk.gif|General Tab, Foreign Keys Field]]<br><br>
# Click '''Add''' in the Foreign Keys area to add a key pair. The Specify Field Pair dialog box appears.<br><span id="Figure 79-2"></span>''''' Specify Field Pair Dialog Box'''''<br>[[Image:spfldpr.gif|Specify Field Pair Dialog Box]]<br><br>
# Click '''Browse''' to add a foreign key for the '''Source XPath''' and '''Target XPath''' fields.




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