set (Nuxeo VDL Generated Documentation)

Description:
Facelet tag handler that exposes an expression as a variable, and makes it possible to cache it.

This is very close to the c:set tag, but allows caching, and the variable is only exposed inside the tag. Note that this tag will not work as expected when used with iteration variables inside a standard table, for instance.
Example:
```
        <nxu:set var="actions" value="#{webActions.getActionsList('SUBVIEW_UPPER_LIST')}" cache="true">
          <nxu:dataList var="action" value="#{actions}">
            ...
          </nxu:dataList>
        </nxu:set>
      
```

Component Information
Info	Value
Component Type	`org.nuxeo.ecm.platform.ui.web.binding.alias.UIAliasHolder`
Handler Class	`org.nuxeo.ecm.platform.ui.web.tag.handler.SetTagHandler`
Renderer Type	None
Description	None

Attributes
Name	Required	Type	Description
`var`	`true`	`javax.el.ValueExpression` (must evaluate to `java.lang.String`)	Name of the variable that will be set.
`value`	`true`	`javax.el.ValueExpression` (must evaluate to `java.lang.Object`)	Expression that will be evaluated to set the attribute value.
`cache`	`false`	`javax.el.ValueExpression` (must evaluate to `java.lang.Boolean`)	Boolean. Flag indicating if the expression should be evaluated when constructing the JSF tree. If true, it is evaluated only once and not called again when resolving other expressions using the result variable. However, the tag will not work as expected when using request variables in its expression (like table variable). Set to "false" by default.
`resolveTwice`	`false`	`javax.el.ValueExpression` (must evaluate to `java.lang.Boolean`)	Boolean. Flag indicating if the expression should be evaluated twice when resolving it: if value resolved is a String that still contains EL expressions after the first resolution, a second resolution is done. Set to "false" by default. Available since 5.5.
`blockPatterns`	`false`	`javax.el.ValueExpression` (must evaluate to `java.lang.String`)	String indicating that some variables in existing context should be "blocked" e.g resolve to null. This is useful when trying to isolate a resolution context. Accepted syntax is a comma separated list of the variables names, accepting character "" at the end as a wild card. Blocked variabled include the ones exposed via tags c:set, nxu:set, as well as variables exposed by the layout system. Example: "widget, widgetProperty". Available since 5.6.

nxu

Tag set