Generating SQLTemplate and Procedure Access Code
------------------------------------------------
Key: CAY-1089
URL: https://issues.apache.org/cayenne/browse/CAY-1089
Project: Cayenne
Issue Type: Task
Components: Cayenne Core Library
Affects Versions: 3.0
Reporter: Andrus Adamchik
Assignee: Andrus Adamchik
Fix For: 3.0
[Splitting from CAY-1070]
The goal to generate a flexible type-safe code to invoke stored procedures and
mapped SQLTemplates, similar to CAY-1070 implementation for SelectQueries.
This feature should target class generation in "datamap" mode with Ant (via
'cgen' task [1]) and CayenneModeler (later this needs to be ported to the Maven
plugin as well). For each ProcedureQuery and SQLTemplate query, a method would
have to return a generic QueryResponse object, as we don't have enough info to
tell whether the query is selecting or updating or both (although we can do
something smart about SQLTemplates, such as greping for SELECT in the beginning
of the query).
public QueryResponse performQuery2(ObjectContext, Object parameter1, Object
parameter2) {
// bind parameters and
// run the query here
}
The number, names and order of parameters must match that of the mapped query
(not yet sure how to do with with SQLTemplate or ProcedureQuery). Also we need
to do something smart about parameter types.
For each stored procedure that does not have at least one procedure query,
create a method that builds a procedure query on the fly. Method name is based
on stored procedure name.
public QueryResponse performProcedure2(ObjectContext, Object parameter1, Object
parameter2) {
// Create ProcedureQuery
// bind parameters and
// run the query here
}
[1] http://cayenne.apache.org/doc/cgen.html
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