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| Changing Namespace Prefix |
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Message
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| martc |
 Posted: Tue Aug 28, 2007 8:59 am Post subject: Changing Namespace Prefix |
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Apprentice
Joined: 23 Mar 2005
Posts: 39
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Hi,
Is there a simple ESQL command to change the namespace prefix ONLY, leaving the namespace intact.
We have a client that hardcoded for a specific prefix and a temporary solution until they fix their issue was to change the prefix to their expectation.
thanks |
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| jefflowrey |
| Posted: Tue Aug 28, 2007 9:08 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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If you're using MRM-XML, you can configure this on the message properties.
If you're using XMLNS or XMLNSC... You can set a Namespace Declaration.
Set OutputRoot.XMLNSC.(XMLNSC.NamespaceDecl)xmlns:prefix='namespace';
Set OutputRoot.XMLNS.(XML.NamespaceDecl)xmlns:prefix='namespace';
or something similar.
_________________
I am *not* the model of the modern major general. |
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| martc |
| Posted: Tue Aug 28, 2007 2:25 pm Post subject: |
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Apprentice
Joined: 23 Mar 2005
Posts: 39
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Thanks Jeff, the DECLARE did not change an existing prefix for me.
My approach was to strip the namespaces first and then recreate them using these procs which I got from another link. The strip works nicely but the setnamespace only sets the namespace and not the prefix. The command SET FieldRefPtr.(XML.NamespaceDecl)xmlns:svc = namespace; actually placed this namespace on every tag which is not what i was hoping for.
CREATE PROCEDURE StripNamespac(IN StartRefPtr REFERENCE)
BEGIN
DECLARE FieldRefPtr REFERENCE TO StartRefPtr;
MOVE FieldRefPtr FIRSTCHILD;
IF LASTMOVE(FieldRefPtr) THEN
IF FIELDTYPE(FieldRefPtr) IN (0x01000000, 0x03000000) THEN
SET FieldRefPtr.(XML.NamespaceDecl)* = NULL;
SET FieldRefPtr NAMESPACE = '';
END IF;
END IF;
WHILE LASTMOVE(FieldRefPtr) DO
CALL StripNamespac(FieldRefPtr);
IF FIELDTYPE(FieldRefPtr) IN (0x01000000, 0x03000000) THEN
SET FieldRefPtr.(XML.NamespaceDecl)* = NULL;
SET FieldRefPtr NAMESPACE = '';
END IF;
MOVE FieldRefPtr NEXTSIBLING;
END WHILE;
END;
CREATE PROCEDURE SetNamespace(IN StartRefPtr REFERENCE, IN namespace CHARACTER)
BEGIN
DECLARE FieldRefPtr REFERENCE TO StartRefPtr;
MOVE FieldRefPtr FIRSTCHILD;
IF LASTMOVE(FieldRefPtr) THEN
IF FIELDTYPE(FieldRefPtr) IN (0x01000000, 0x03000000) THEN
SET FieldRefPtr.(XML.NamespaceDecl)* = NULL;
SET FieldRefPtr NAMESPACE = '';
END IF;
END IF;
WHILE LASTMOVE(FieldRefPtr) DO
CALL SetNamespace(FieldRefPtr,namespace);
IF FIELDTYPE(FieldRefPtr) IN (0x01000000, 0x03000000) THEN
SET FieldRefPtr.(XML.NamespaceDecl)* = NULL;
--SET FieldRefPtr.(XML.NamespaceDecl)xmlns:svc = namespace;
END IF;
MOVE FieldRefPtr NEXTSIBLING;
END WHILE;
END; |
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| kimbert |
| Posted: Tue Aug 28, 2007 2:38 pm Post subject: |
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Jedi Council
Joined: 29 Jul 2003
Posts: 5542
Location: Southampton
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| Quote: |
| Thanks Jeff, the DECLARE did not change an existing prefix for me. |
What?! Jeff never said anything about using DECLARE!
You need to understand how the XMLNS and XMLNSC parsers use namespaces.
a) Every field in the message tree has a namespace, which may be the empty string if the element does not have one.
b) When parsing, <prefix:el xmlns:prefix="myNamespace"/> causes the element 'el' to be put into the message tree with a child 'attribute' representing the namespace declaration. The child 'attribute' has type 'XML.NamespaceDecl'
c) When writing a message tree, the XMLNS parser scans for elements with Type set to 'XML.NamespaceDecl' and modifies the prefixes in the output bitstream accordingly. So if you don't change the parsed message tree, the prefixes will be the same in the ouput XML as they were in the input XML.
d) If you want to change the prefixes, you have exactly one option : change the namespace declarations in the message tree. |
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| martc |
| Posted: Fri Sep 07, 2007 1:11 pm Post subject: |
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Apprentice
Joined: 23 Mar 2005
Posts: 39
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| Hey guys, thanks for the tip. I got it working by setting the namespace as you suggested. |
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