Re: What do an empty document mean ?

/ Innovimax SARL <innovimax@gmail.com> was heard to say:
| Dear,
|
| There is many places where an "empty document" can appear....but what
| does it mean and what are the use case
|
| 1) by construct
| 2) by deleting all the nodes
| 3) in a sequence, generate by for-each
|
| ?? do I have here a sequence of "empty-document" ??

In each case, it means that any step that reads the port in
question will receive zero documents.

For each step, I think we need to describe clear semantics for
receiving zero documents on each of its input ports.

At first glance:

A.1.1 Count [proposed]

Produces a count of 0.

A.1.2 Delete

Produces an empty sequence.

A.1.4 Escape Markup

Produces an empty sequence.

A.1.5 Head

Produces an empty sequence.

A.1.6 Identity

Produces an empty sequence.

A.1.7 Insert

Produces an empty sequence.

A.1.8 Label Elements

Produces an empty sequence.

A.1.10 Matching Documents

Produces an empty sequence.

A.1.11 Namespace Rename

Produces an empty sequence.

A.1.12 Rename

Produces an empty sequence.

A.1.13 Replace

Produces an empty sequence.

A.1.14 Set Attributes

Error.

A.1.15 String Replace

Produces an empty sequence.

A.1.16 Store

Does nothing or error.

A.1.17 Tee [proposed]

Produces an empty sequence.

A.1.18 Tail

Produces an empty sequence.

A.1.19 Unescape Markup

Produces an empty sequence.

A.1.20 Unwrap

Produces an empty sequence.

A.1.21 Wrap

Produces <wrapper/> if the match was on the document element, otherwise
produces an empty sequence.

A.1.22 XInclude

Produces an empty sequence.

A.1.23 XSLT

Error.

A.2.1 HTTP Request

Error?

A.2.2 Relax NG Validate

Error.

A.2.3 XML Schema Validate

Error.

A.2.4 XSLT 2.0

Error unless template-name is specified.

A.2.5 XSL Formatter

Error.

A.2.6 XQuery 1.0

Error.

                                        Be seeing you,
                                          norm

-- 
Norman Walsh <ndw@nwalsh.com> | On the other hand, you have different
http://nwalsh.com/            | fingers.