12:22 p.m.
I've attached both the xml and the xsd used and re-tested the importation and query
against them with the same result. Thanks for looking into it! Could it be the same issue
as this:
https://jira.jboss.org/jira/browse/TEIID-93
??
My issue is a much simpler case, however. The query needn't be pushed down as apart of
the planner over a federated view to cause the irregularity -- one need only query the XML
source directly.
Thanks again!
And just for giggles:
# xmllint --schema clients.xsd clients.xml
<?xml version="1.0" encoding="UTF-8"?>
<clients>
<client>
<name>acme</name>
<rate>15</rate>
</client>
<client>
<name>toolwerks</name>
<rate>20</rate>
</client>
</clients>
clients.xml validates
:-)
- Mike
________________________________
From: John Doyle <jdoyle(a)redhat.com>
To: Mike Mascari <mascarim(a)yahoo.com>
Cc: teiid-users(a)lists.jboss.org
Sent: Tuesday, September 1, 2009 11:48:24 AM
Subject: Re: [teiid-users] unexpected query results against XML data source
Hi Mike,
I've tried to reproduce this but get no root elements to select from during the import
process. Is it possible that the XSD pasted here is different from what you're
using?
~jd
----- "Mike Mascari" <mascarim(a)yahoo.com> wrote:
Hello. I've downloaded and installed the snapshot as of today (8/31/2009) and,
using the designer:
1. Used Import->XML Schema as Relational Source Model
2. Selected Document over HTTP with no request parameters
3. Selected No Catalog
4. Chose "File System" as source of XML Schema
(inlined below)
5. Chose "client" (I've tried
w/"clients" as well) as the root element and "Finish"
6. Create a "purchasing" View Model and, with
"purchasing" selected, created an "example" BaseTable. I then
drag-and-drop "client" from clients.xmi Source Model into SOURCES pane. (This
View abstraction turns out not to be the problem -- I query the Source via the
Execute'd VDB with the same outcome.)
7. Created a "billing" vdb, cleaned, built, and
synchronized.
8. Then, with this data served up by apache:
<?xml version="1.0"
encoding="UTF-8"?>
<clients>
<client>
<name>acme</name>
<rate>15</rate>
</client>
<client>
<name>toolwerks</name>
<rate>20</rate>
</client>
</clients>
I issued the following query:
select * from clients.client
and received the expected result:
null;acme;15
null;toolwerks;20
9. Then I did this:
select * from clients.client where name = 'acme'
and received *two rows*:
null;acme;15
null;toolwerks;20
10. So I did this:
select * from clients.client where name != 'acme'
and received the expected one row:
null;toolwerks;20
???
Is there something goofy with the equality operator against
XML data? Is there flag that needs flipped on these attributes? I went with the
"string" mapping on the 'XML Schema as Relational Source Model' dialog
wizard (pane 4 IIRC). Oughtn't I have? I also changed XML node names that might have
been SQL keywords ('name' -> 'fullname') but no dice...
Thoughts?
- Mike
Schema:
<?xml version="1.0"?>
<!-- our client database -->
<xs:element name="clients">
<xs:complexType>
<xs:sequence>
<!-- the client -->
<xs:element name="client" minOccurs="1"
maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<!-- client name -->
<xs:element name="name"
type="xs:string" minOccurs="1" maxOccurs="1"/>
<!-- bill rate -->
<xs:element name="rate"
minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:decimal">
<xs:minInclusive value="50"/>
<xs:maxInclusive value="250"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
>
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