[jira] [Created] (OPENJPA-2671) Wrong type mapping for double in HSQLDB

["Andreas Borg (JIRA)" <ji...@apache.org>]

Andreas Borg created OPENJPA-2671:
-------------------------------------

             Summary: Wrong type mapping for double in HSQLDB
                 Key: OPENJPA-2671
                 URL: https://issues.apache.org/jira/browse/OPENJPA-2671
             Project: OpenJPA
          Issue Type: Bug
          Components: jdbc
    Affects Versions: 2.4.1
            Reporter: Andreas Borg


Currently, Java type {{double}} is mapped to {{NUMERIC}} for HSQLDB:

{code:title=HSQLDictionary.java, line 82|borderStyle=solid}
       doubleTypeName = "NUMERIC";
{code}

(see https://fisheye6.atlassian.com/browse/~tag=2.4.1/openjpa/tags/2.4.1/openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/sql/HSQLDictionary.java?hb=true).

This seems wrong to me, as HSQLDB's {{NUMERIC}} is not a binary floating point type, but represents exact decimal numbers and maps to Java type {{BigDecimal}} (see HSQL documentation: http://hsqldb.org/doc/2.0/guide/sqlgeneral-chapt.html#sgc_numeric_types). The corresponding HSQL type for {{double}} is, according to this manual, {{REAL}}, {{FLOAT}} or {{DOUBLE}} (all being equivalent).



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