#ALIAS/#TRYALIAS (access a symbol from another instance)


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#ALIAS( newsymbol , oldsymbol [, instance ] )

#TRYALIAS( newsymbol , oldsymbol [, instance ] )

#ALIAS / #TRYALIAS

Declares a synonym for a user-defined symbol.

newsymbol

Specifies the new synonym for the oldsymbol.

oldsymbol

The name of the symbol for which to declare a synonym. This must meet all the requirements of a user-defined symbol. This must not be a #PROMPT symbol or a variable in the same scope.

instance

An expression containing the instance of the addition containing the oldsymbol.

The #ALIAS statement declares a synonym for the user-defined oldsymbol declared in a #CODE, #CONTROL, or #EXTENSION template prompt for use in another.

The #TRYALIAS statement is similar to #ALIAS except that the symbol is only defined by the template referred to by oldsymbol. If oldsymbol is not defined, no template error is posted.

Example:

#EXTENSION(GlobalSecurity,'Global Password Check'),APPLICATION

 #DECLARE(%PasswordFile)

 #DECLARE(%PasswordFileKey)

 

#EXTENSION(LocalSecurity,'Local Procedure Password Check'),PROCEDURE

#ALIAS(%PswdFile,%PasswordFile,%ControlInstance)

#ALIAS(%PswdFileKey,%PasswordFileKey,%ControlInstance)

 

#GROUP (%QueryHasLocator, %WhichInstance),AUTO

#TRYALIAS (%CurLocatorType, %LocatorType, %WhichInstance)

#IF (VAREXISTS(%CurLocatorType))

 #RETURN (%CurLocatorType)

#END

#RETURN ''

See Also:     #CODE ,#CONTROL ,#EXTENSION