XFA Specification
Chapter 15, Template Specification
Template Reference
475
this property is a normal XFA SOM expression. See the
XFA-Scripting Object Model Expression Specification
[XFA
for more information about XFA SOM expressions.
The usage property
The context(s) in which the connection is to be used. The value of this property must be one of the
following:
exportAndImport
Used during both import and export. This value is allowed both for connections to web services
and connections to XML data documents.
exportOnly
Used during export, ignored during import. This value is only allowed for connections to web
services.
importOnly
Used during import, ignored during export. This value is only allowed for connections to web
services.
The use property
Invokes another object in the same document as a prototype for this object. The content of this property is
either a SOM expression (which cannot start with '#') or a '#' character followed by an XML ID.
Starting with XFA 2.4 the object used as a prototype no longer needs to be the child of
proto
. Any object
of the appropriate class can be used as a prototype.
If both
use
and
usehref
are non-empty
usehref
takes precedence.
The usehref property
Invokes an external object as a prototype for this object. The content of this property is an URL, followed
by '#', followed by either an XML ID or by som(SOM_expr) where
SOM_expr
represents a SOM expression.
The XML ID or SOM expression is resolved in the context of the external document.
If both
use
and
usehref
are non-empty
usehref
takes precedence.