[jira] [Created] (CAY-1923) Optimize BatchTranslator - use fixed size array of BatchParameterBinding

["Andrus Adamchik (JIRA)" <ji...@apache.org>]

Andrus Adamchik created CAY-1923:
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             Summary: Optimize BatchTranslator - use fixed size array of BatchParameterBinding
                 Key: CAY-1923
                 URL: https://issues.apache.org/jira/browse/CAY-1923
             Project: Cayenne
          Issue Type: Bug
            Reporter: Andrus Adamchik
            Assignee: Andrus Adamchik
             Fix For: 3.2.M2


The new BatchTranslator has this method:

   List<BatchParameterBinding> createBindings(BatchQueryRow row);

The list contents differ from row to row (e.g. due to NULL handling). This creates an inefficiency in the default mode of operation (List and  BatchParameterBinding are created over and over again in the same tx), and makes crypto interception doubly inefficient, as we'll need to compile encryptors for each row individually. So need to batch this somehow. E.g. by allocating a single BatchParameterBinding[], filling it with bindings and then reusing it for each row. Excluded bindings for a given row will be marked with some flag. This will also allow to precompile encryptors in the crypto module.



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