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https://issues.apache.org/jira/browse/DERBY-2279?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vemund Østgaard closed DERBY-2279.
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> JDBC3 driver is loaded instead of JDBC4 when running with jdk1.7
> -----------------------------------------------------------------
>
> Key: DERBY-2279
> URL: https://issues.apache.org/jira/browse/DERBY-2279
> Project: Derby
> Issue Type: Bug
> Components: JDBC
> Affects Versions: 10.2.2.0
> Environment: jdk1.7
> Reporter: Vemund Østgaard
> Assignee: Vemund Østgaard
> Fix For: 10.2.2.1, 10.3.1.4
>
> Attachments: 2279-diff, 2279-diff.stat
>
>
> When running tests with jdk1.7 I discovered that the test harness used 1.6
> master files and tested JDBC4 functionality, but Derby loaded a JDBC3 driver,
> causing a lot of failures.
> The problem is caused by code in
> engine/org/apache/derby/iapi/services/info/JVMInfo.java that controls what
> version of JDBC to use, based on the version of java that the jvm is running.
> A check at the end seems to be intended to make sure that Derby is compatible
> with future jdk versions, but it is outdated and makes sure that any
> "unknown" jvm newer than 1.4 uses JDBC3. The check should be changed to make
> sure that any jvm newer than 1.6 uses JDBC4:
> - if
> (Float.valueOf(javaVersion).floatValue() > 1.4f)
> - id = 5;
> + if
> (Float.valueOf(javaVersion).floatValue() > 1.6f)
> + id = J2SE_16;
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