Hello Erdal,

an XML document has to have at least one (root) element, otherwise it isn't a well-formed XML document. This is specified by the W3C, see https://www.w3.org/TR/2008/REC-xml-20081126/#sec-well-formed: " A textual object is a *well-formed* XML document if [...] it contains one or more elements.". So, nothing we can do about this :)

But you can create a simple document with a lonely root node to later put content into. E.g. you could execute the following query:

db:add("test", <root/>, "doc.xml")

which creates the well-formed XML document doc.xml with the root element <root/> in your test database.

Hope this helps

Dirk

On 10/06/2016 07:19 PM, Erdal Karaca wrote:

Hi Dirk, Thanks for the answer! When creating the database, I do not know what the root of the document to create will be. Also, I do not have any physical documents (xml files) to add initially as the root elements will be created programmatically (basex embedded mode). the db:add() command needs an initial input: Is there a way to create an empty document?

Thanks.

2016-10-06 18:29 GMT+02:00 Dirk Kirsten <dk@basex.org mailto:dk@basex.org>:

Hello Erdal,

a database consists of (multiple) documents. When you create a
database
with the given command it will be en empty database without any
document. So to write into it you will have to add at least one
document
first, e.g. by using the ADD command
(http://docs.basex.org/wiki/Commands#ADD
<http://docs.basex.org/wiki/Commands#ADD>) or db:add()
(http://docs.basex.org/wiki/Database_Module#db:add
<http://docs.basex.org/wiki/Database_Module#db:add>)

Cheers
Dirk

On 10/06/2016 06:03 PM, Erdal Karaca wrote:
> Hi,
> When creating an empty database, then trying to insert a node
into its
> root, I get the following error message:
>
> Command:
> create db test
>
> XQuery:
> insert node <test></test> into /
>
> Error:
> [XUDY0027] Insert target is an empty sequence.
>
> How can I populate an empty database? - I am using basex 8.5.3.
>
> Thanks!

--
Dirk Kirsten, BaseX GmbH, http://basexgmbh.de
|-- Firmensitz: Blarerstrasse 56, 78462 Konstanz
|-- Registergericht Freiburg, HRB: 708285, Geschäftsführer:
|   Dr. Christian Grün, Dr. Alexander Holupirek, Michael Seiferle
`-- Phone: 0049 7531 91 68 276 <tel:0049%207531%2091%2068%20276>,
Fax: 0049 7531 20 05 22 <tel:0049%207531%2020%2005%2022>

I will apply the dummy root node solution. Thanks to you both!

2016-10-06 19:41 GMT+02:00 Christian Grün christian.gruen@gmail.com:

+1 for Dirk’s answer. One more thing: You can create a single root node along with your CREATE DB call:

create db test <root/>

On Thu, Oct 6, 2016 at 7:37 PM, Dirk Kirsten dk@basex.org wrote:

...

Hello Erdal,

an XML document has to have at least one (root) element, otherwise it

isn't

...

a well-formed XML document. This is specified by the W3C, see https://www.w3.org/TR/2008/REC-xml-20081126/#sec-well-formed: " A

textual

...

object is a well-formed XML document if [...] it contains one or more elements.". So, nothing we can do about this :)

But you can create a simple document with a lonely root node to later put content into. E.g. you could execute the following query:

db:add("test", <root/>, "doc.xml")

which creates the well-formed XML document doc.xml with the root element <root/> in your test database.

Hope this helps

Dirk

On 10/06/2016 07:19 PM, Erdal Karaca wrote:

Hi Dirk, Thanks for the answer! When creating the database, I do not know what the root of the document

to

...

create will be. Also, I do not have any physical documents (xml files) to add initially

as

...

the root elements will be created programmatically (basex embedded mode). the db:add() command needs an initial input: Is there a way to create an empty document?

Thanks.

2016-10-06 18:29 GMT+02:00 Dirk Kirsten dk@basex.org:

...

Hello Erdal,

a database consists of (multiple) documents. When you create a database with the given command it will be en empty database without any document. So to write into it you will have to add at least one document first, e.g. by using the ADD command (http://docs.basex.org/wiki/Commands#ADD) or db:add() (http://docs.basex.org/wiki/Database_Module#db:add)

Cheers Dirk

On 10/06/2016 06:03 PM, Erdal Karaca wrote:

...

Hi, When creating an empty database, then trying to insert a node into its root, I get the following error message:

Command: create db test

XQuery: insert node <test></test> into /

Error: [XUDY0027] Insert target is an empty sequence.

How can I populate an empty database? - I am using basex 8.5.3.

Thanks!

-- Dirk Kirsten, BaseX GmbH, http://basexgmbh.de |-- Firmensitz: Blarerstrasse 56, 78462 Konstanz |-- Registergericht Freiburg, HRB: 708285, Geschäftsführer: | Dr. Christian Grün, Dr. Alexander Holupirek, Michael Seiferle `-- Phone: 0049 7531 91 68 276, Fax: 0049 7531 20 05 22

-- Dirk Kirsten, BaseX GmbH, http://basexgmbh.de |-- Firmensitz: Blarerstrasse 56, 78462 Konstanz |-- Registergericht Freiburg, HRB: 708285, Geschäftsführer: | Dr. Christian Grün, Dr. Alexander Holupirek, Michael Seiferle `-- Phone: 0049 7531 91 68 276, Fax: 0049 7531 20 05 22