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https://issues.apache.org/jira/browse/OPENJPA-2671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15575455#comment-15575455
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Andreas Borg commented on OPENJPA-2671:
---------------------------------------
I am using HSQLDB 2.3.3. Our specific problem is that
{{Double.NEGATIVE_INFINITY}} (this probably also applies to
{{POSITIVE-INFINITY}}) cannot be saved when a {{NUMERIC}} column is used (HSQL
raises an exception saying "numeric value out of range". This problem does not
ocur when enforcing a {{DOUBLE}} column by annotating
{{@Column(columnDefinition = "DOUBLE")}}. I have attached test code (executable
with {{mvn test}}), which reproduces this error and demonstrates that it does
not occur with mapping to database type {{DOUBLE}}.
> 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).
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