Using extractvalue with XMLTYPE to extract multiple nodes

hi ,
I'm trying to fetch data from xml which is stored as clob in db (10g) ,
when i tried to fetch with query as below
SELECT extractvalue(XMLTYPE(xjm.X_MSG_XML), '//orderRequest/order/orderItem/alternativeIdentifer/value') uiid
FROM TABLE_X_MSG_ATTR xma, TABLE_X_JMS_MSG xjm
WHERE xma.X_MSG_ATTR2X_JMS_MSG=xjm.OBJID
AND xma.X_ATTR_NAME='MOP_ID'
AND xma.X_ATTR_VALUE in ('RJM78999')
and got **ORA-19025: EXTRACTVALUE returns value of only one node**
so i modified it as below
SELECT extractvalue(value(x), '//orderRequest/order/orderItem/alternativeIdentifer/value') uiid
FROM TABLE_X_MSG_ATTR xma, TABLE_X_JMS_MSG xjm
,TABLE(XMLSequence(extractvalue(XMLTYPE(xjm.X_MSG_XML),'//orderRequest/order/orderItem/alternativeIdentifer/value'))) x
WHERE xma.X_MSG_ATTR2X_JMS_MSG=xjm.OBJID
AND xma.X_ATTR_NAME='MOP_ID'
AND xma.X_ATTR_VALUE in ('RJM78999')
ORA-29900: operator binding does not exist
ORA-06553: PLS-306: wrong number or types of arguments in call to 'XMLSEQUENCE'
no success :( it is working for single record (node)all perfect
Thnkz
Edited by: Volution2111 on Sep 11, 2010 5:08 AM
Edited by: Volution2111 on Sep 11, 2010 5:10 AM

Difficult to give the exact answer without knowing which node repeats..
Howver it will be something like this
select extractValue(value(x),'/RepeatingNode/NonRepatingNode/NonRepeatingNode)
from TABLE, table(xmlsequence(extract(xmltype(clob),'/Root/Node/RepeatingNode')))) x

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If you google a bit for default namespace and Xpath you will find many topic.
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These links can be giving a clearer picture:
http://www.edankert.com/defaultnamespaces.html
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Copyright (c) 1982, 2010, Oracle. All rights reserved.
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2 (   SELECT '
3 <html xmlns="http://www.w3.org/1999/xhtml">
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http://www.w3.org/1999/xhtml
SQL>
If this would work, then it would be enough to add the optional additional parameter namespace. In case it is null it will be set as xmlsn="" and it will work anyway:
Please note that it will work both if the XML has a default namespace or not
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with default namespace:
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2     xparam         XMLTYPE;
3     v_xpath        VARCHAR2 (500);
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6     xparam :=
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9    <head>
10      <title>Example XHTML document</title>
11    </head>
12    <body>
13      <p>Sample content</p>
14    </body>
15 </html>');
16     v_xpath := '//title/text()';
17     v_ns := 'xmlns="' || xparam.getnamespace () || '"';
18     DBMS_OUTPUT.
19      put_line (
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21 END;
22 /
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SQL>
and without default namespace
SQL> DECLARE
2     xparam         XMLTYPE;
3     v_xpath        VARCHAR2 (500);
4     v_ns           VARCHAR2 (500);
5 BEGIN
6     xparam :=
7        xmltype ('
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9    <head>
10      <title>Example XHTML document</title>
11    </head>
12    <body>
13      <p>Sample content</p>
14    </body>
15 </html>');
16     v_xpath := '//title/text()';
17     v_ns := 'xmlns="' || xparam.getnamespace () || '"';
18     DBMS_OUTPUT.
19      put_line (
20        'Value of title:' || xparam.EXTRACT (v_xpath, v_ns).getstringval ());
21 END;
22 /
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Regards.
Al
Message was edited by: AlbertoFaenza
IF removed as it is working anyway.

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hi,
My customer will use web center 11g on multiple linux server, I noticed there is a comment in wc doc like this:
=========================================
The default file-based policy store can only be used for single-node WebCenter Spaces configurations. For multi-node configurations, you must reassociate the policy and credential store with an external LDAP-based store (such as Oracle Internet Directory) as described in Section 23.4, "Configuring the Policy and Credential Store."
The policy store can be configured to use Oracle Internet Directory 11gR1 and 10.1.4.3, and OVD 11gR1 with the Local Store Adapter (LSA).
The identity store can be configured to use the following LDAP servers:
Oracle Internet Directory (OID) 11gR1 and 10.1.4.3
Oracle Virtual Directory (OVD) 11gR1 and 10.1.4
Sun iPlanet version 4.1.3
Active Directory shipped as part of Windows 2000
Open LDAP version 2.0.7
Novell NDS version 8.5.1
========================================
My customer only has AD, they don't have budget to buy oid at this time, according to the statement "The policy store can be configured to use Oracle Internet Directory 11gR1 and 10.1.4.3, and OVD 11gR1 with the Local Store Adapter (LSA).", does that mean the wc policy store can not use other ldap such as ad in multiple-node wc configuration?
If performance is not an issue, can I use default file-based policy store in this case?
If it's impossible for the customer to buy oid at this time, what's the possible solution?
Thanks a lot!
Regards

You can configure directly with AD.
Basically your WebLogic server needs to be configured to talk to AD. You can configure an Identity provider in Weblogic server which uses AD as LDAP.
This should work in multi-node environment.
Also, i do not see any reason why file based jazn-data should not work.
Best solution from my perspective if Weblogic AD configuration does not work:
Create and manage your users and roles in Weblogic embedded LDAP. All you have to change in your application is the realm to the name of weblogic realm(default is myrealm) and while deploying make sure you uncheck the create users and roles.
Regards,
Venkat

Extracting data from XML using extractValue

Given the following XML stored as xmlType in the database(table name
:opfdata) , i woiuld like to query it using extractValue,existsNode to
retrieve the title of the book (dc:Title).
i wrote the following query
select e.existsNode('/package/metadata/dc-metadata/dc-Title
unique-identifier="uid"') from opfdata e;
Gives result as 1.
But if i run change existNode to extractValue it gives me an error
daying the xpath expression is wrong.
Any ideas?
<package unique-identifier="uid"
xmlns="http://openebook.org/namespaces/oeb-package/1.0/">

<metadata>
<dc-metadata xmlns:dc="http://purl.org/dc/elements/1.0/"
xmlns:oebpackage="http://openebook.org/namespaces/oeb-package/1.0/">
<dc:Title>Midnight Come Again</dc:Title>
<dc:Subject>Shugak, Kate (Fictitious character)
Fiction.</dc:Subject>
<dc:Subject>Women private investigators -- Alaska
Fiction.</dc:Subject>
<dc:Subject>Smuggling Fiction.</dc:Subject>
<dc:Subject>Alaska Fiction.</dc:Subject>
<dc:Subject>Mystery fiction.</dc:Subject>
<dc:Identifier id="uid"
scheme="DTB">us-nls-db00010</dc:Identifier>
<dc:Creator role="aut">Dana Stabenow</dc:Creator>
<dc:Source>ISBN-0-312-20596-1</dc:Source>
<dc:Publisher>National Library Service for the Blind and
Physically
Handicapped</dc:Publisher>
<dc:Date>2002-5</dc:Date>
<dc:Format>ANSI/NISO Z39.86-2002</dc:Format>
<dc:Description>Following the death of her lover, in Hunter's
Moon (RC 49633), depressed Kate Shugak takes a job in a coastal
village as a cargo pilot. Meanwhile Alaska state trooper Jim Chopin is
sent there under cover to investigate Russian smugglers. Some explicit
descriptions of sex, some violence, and some strong language. 2000.
</dc:Description>
<dc:Language>en</dc:Language>
</dc-metadata>
</package>

Hi,
First of all what is the result of the query
select e.existsNode('/package/metadata/dc-metadata/dc-Title
unique-identifier="uid"') from opfdata e;
existsNode returns 1 if it finds the row and 0 if it doesn't find the node.
The xpath which you need to give to retrieve to retrieve the title of the book is:
'/package/metadata/dc-metadata/title'
You can refer the following link to know more about existsNode and extractValue
http://otn.oracle.com/docs/products/oracle9i/doc_library/release2/appdev.920/a96620/xdb03usg.htm#1036760
You can check the samples on XML DB which uses the different functionalities of Oracle XML DB.
http://otn.oracle.com/sample_code/tech/xml/xmldb/content.html
Check the Survey Sample which uses many features of XML DB. The sample is located at:
http://otn.oracle.com/sample_code/tech/xml/survey/content.html
and the various features used in the sample are explained in the page:
http://otn.oracle.com/sample_code/tech/xml/survey/docs/AboutOracleXMLDB.html
Regards,
Anupama
http://otn.oracle.com/sample_code/content.html

How to create the query with multiple node types

Hi,
I am having an issue in creating a query to search multiple node types.
The requirement is to query documents/pages of the type dam:Asset and cq:Page present under a path.
I tried the following code snippet with no luck .
path=/content
1_type=cq:Page
2_type=dam:Asset
property=jcr:content/metadata/@cq:tags
property.1_value=<tag Name>
I was able to write a query with single type. However i could not find any documents/ materials with multipe types as shown above.
Thanks in advance.
Regards
Sudhi

I don't think multiple type is possible. Instead use super type like nt:base that will cover both page and asset.
Yogesh
www.wemblog.com

Using extractvalue with XMLTYPE to extract multiple nodes

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