[
https://issues.apache.org/jira/browse/OPENJPA-2671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15581503#comment-15581503
]
Andreas Borg commented on OPENJPA-2671:
---------------------------------------
[~struberg], thanks for your suggestion. I fixed my application by detecting at
runtime if HSQLDB is used and if yes, setting this property before initializing
the EntityManagerFactory:
{code}
HashMap<String, String> persistenceOptions = new HashMap<String, String>();
if (isHsqldb()) {
persistenceOptions.put("openjpa.jdbc.DBDictionary",
"(DoubleTypeName=DOUBLE)");
}
EntityManager emf = Persistence.createEntityManagerFactory("myApplication",
persistenceOptions);
{code}
For my application, this issue is thereby solved. I leave it to you to decide
if there should be a general fix.
> 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
> Attachments: testHsqldbDouble.zip
>
>
> 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).
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
