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  1. Calcite
  2. CALCITE-795

Loss of precision when sending a decimal number via the remote JSON service

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.4.0-incubating
    • Component/s: None
    • Labels:
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    • Flags:
      Patch

      Description

      When sending for example 

      {"type":"NUMBER","value":"333.333"}

      to the "fetch" request of the remote JSON service, the exact value will not be kept and after one UPSERT/SELECT roundtrip in Phoenix I will get 333.332 back.

      Interestingly enough, this worked in Calcite 1.2 before the TypedValue class was introduced, but I think that was working just by accident.

      The attached patch changes the Jackson object mapper to decode any JSON float to BigDecimal, unless the code explicitly asks for Float/Double. I think that shouldn't break anything and it solves this problem.

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            • Assignee:
              julianhyde Julian Hyde
              Reporter:
              lukaslalinsky Lukas Lalinsky
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              • Created:
                Updated:
                Resolved: