Hi
On 06/12/12 17:34, mrkambam wrote:
Hi Sergey,
I have an interesting requirement that recently propped up. We have a ReST
endpoint defined with XPath expression as Payload. Based on this XPath
expression, we need to query database for appropriate resources.
We are using CXF 2.2.12 as our rest layer. Other technologies in the stack
are JAXB/ Spring/ Hibernate.
We are familiar with XML or JSON as payload but not XPath as Payload. So how
do we transform this XPath expression to a meaningful SQL query? . Are there
any proviisons in CXF that we can leverage?
Apparently JCR offers XPath to SQL path:
http://www.day.com/specs/jcr/1.0/6.6.2_XPath_and_SQL.html
I don't know how practical that is but give that a try,
By the way: who is controlling the client producing XPath ? If it is
under your control, then I'd also recommend looking at FIQL support in CXF:
http://cxf.apache.org/docs/jax-rs-advanced-features.html#JAX-RSAdvancedFeatures-FIQLsearchqueries
a simple expression or a combination of expressions can be captured and
then converted to SQL or other untyped expressions or to JPA2 Query, etc.
We can review how XPath expressions can be captured with URI & FIQL
Sergey
Please share if anybody came across this scenario.
Thanks,
=Mahesh Kambam.
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Sergey Beryozkin
Talend Community Coders
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