A transform system for the Query abstract syntax tree (and updates) that
was written a while back when we were discussing this:
https://github.com/afs/AFS-Dev/tree/master/src/main/java/element
Like ParameterizedSparqlString, it is client-side.
Andy
On 02/09/14 13:51, Claude Warren wrote:
I have a QueryBuilder that currently builds a query string. Andy had asked
if I could make it build the query object so that we didn't have to parse
the string. One of the features of the current method is that it allows
you to use the String.format() parameters and replace them before calling
the parser. I am looking for a way to do that while building the query
objects. I had thought about allowing replacement of the variables with
concrete values similar to what the parameterized-sparql-strings does.
On Tue, Sep 2, 2014 at 1:27 PM, Rob Vesse <[email protected]> wrote:
Claude
There is the ParameterizedSparqlString functionality which is essentially
just textual parameterization -
https://jena.apache.org/documentation/query/parameterized-sparql-strings.ht
ml - so it is somewhat limited but that has existed in ARQ for a year or
two now.
There was some talk about doing the parameterisation at the query/algebra
level. Certainly some of the plumbing that supports parameterisation at
the algebra level already exists because it is used by optimisations
Maybe you could elaborate more on what you intend?
Rob
On 02/09/2014 11:10, "Claude Warren" <[email protected]> wrote:
I recall a discussion of prepared statements in Jena awhile back. Now my
google search has turned up using bind to do something like a prepared
statement, but for some reason I thought there was a proposal to do real
prepared statement with replacable parameters. Somthing that would work
with service calls as the parameters would be replaced before the
statement
executed.
Does anyone else remember such a conversation? Does anyone know of such a
solution?
Claude
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