Tag to declare and import constants in EL scope

[eclipse-faces-bot]

This is a commonly requested feature from the community. OmniFaces has o:importConstants, PrimeFaces Extensions has pe:importConstants and pe:importEnum. EL 3.0 offers ImportHandler#importClass(). It would be nice to offer a standard JSF solution such as <f:importConstants>. It's relatively trivial to implement.

Use case:

public enum Gender { MALE, FEMALE, UNKNOWN; }

<f:importConstants type="com.example.Gender" />

<h:selectOneMenu value="#{person.gender}">
    <f:selectItems value="#{Gender}" />
</h:selectOneMenu>

Affected Versions

[2.2]

[eclipse-faces-bot]

@glassfishrobot Commented
Reported by @BalusC

[eclipse-faces-bot]

@glassfishrobot Commented
@BalusC said:
As per mailing list discussion:

• Enforce it as child of <f:metadata> (like viewparam).
• Put constant values in application scope, not request/view/session.
• Allow configuration/override via faces-config.xml.

Additional detail:

• Use var attribute to override name of scoped variable.

[eclipse-faces-bot]

@glassfishrobot Commented
@BalusC said:
<f:importConstants> has been implemented https://java.net/projects/mojarra/sources/git/revision/7e903356fb88df14228f7cf24130c3dd59f0350a

Only configuration/override via faces-config.xml has not been implemented. After all, I'm not really seeing how that's useful.

[eclipse-faces-bot]

@glassfishrobot Commented
Marked as fixed on Monday, June 27th 2016, 3:04:06 am

[eclipse-faces-bot]

@glassfishrobot Commented
This issue was imported from java.net JIRA JAVASERVERFACES_SPEC_PUBLIC-1424

[eclipse-faces-bot]

• Issue Imported From: Tag to declare and import constants in EL scope javaee/javaserverfaces-spec#1424
• Original Issue Raised By:@glassfishrobot
• Original Issue Assigned To: @BalusC
• Original Issue Closed By:@glassfishrobot