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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DERBY-5840) Clean up compiler warnings introduced by using Java 5 language features
Date Tue, 21 May 2013 15:25:16 GMT

     [ https://issues.apache.org/jira/browse/DERBY-5840?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Knut Anders Hatlen updated DERBY-5840:

    Attachment: derby-5840-13-aa-remove-suppression.diff

Attaching derby-5840-13-aa-remove-suppression.diff, which removes some @SuppressWarnings annotations
by making unchecked conversions checked.

- java/engine/org/apache/derby/impl/jdbc/EmbedConnection.java:

Make getTypeMap() use Collections.emptyMap() instead of Collections.EMPTY_MAP. emptyMap()
was added as a type-safe alternative to EMPTY_MAP in Java 5.

- java/engine/org/apache/derby/impl/load/ColumnInfo.java:

When creating a string array from a list of strings, cast each element explicitly to String
instead of relying on an unchecked cast to ArrayList<String>.

- java/engine/org/apache/derby/impl/services/locks/Deadlock.java:

Change a List<Object> variable to plain List, as the type parameter isn't needed the
way the list is used here, and this removes the need to do an unchecked cast from Object to

- java/engine/org/apache/derby/impl/sql/compile/CreateAliasNode.java:

Explicitly cast the elements in the untyped lists passed to the init() method.

- java/testing/org/apache/derbyTesting/functionTests/tests/compatibility/VersionCombinationConfigurator.java:

Remove @SuppressWarnings annotation that's been made unnecessary because of other changes
in this issue.

- java/testing/org/apache/derbyTesting/functionTests/tests/jdbc4/Wrapper41Test.java:

Change some occurrences of Class to Class<?>, which allows removing the @SuppressWarnings

- java/testing/org/apache/derbyTesting/functionTests/tests/management/MBeanTest.java:

Change the type of the privileged action in getDerbyDomainMBeans() from Object to Set<ObjectName>,
so that the returned value doesn't need to be cast unchecked from Object to Set<ObjectName>.

I'm running tests on the patch.
> Clean up compiler warnings introduced by using Java 5 language features
> -----------------------------------------------------------------------
>                 Key: DERBY-5840
>                 URL: https://issues.apache.org/jira/browse/DERBY-5840
>             Project: Derby
>          Issue Type: Improvement
>          Components: Miscellaneous
>    Affects Versions:
>            Reporter: Rick Hillegas
>         Attachments: derby-5840-01-aa-compatibilityTests.diff, derby-5840-02-aa-compatibilityTests-again.diff.txt,
derby-5840-03-aa-drda.diff, derby-5840-03-ab-drda.diff, derby-5840-04-aa-client-level.diff,
derby-5840-05-aa-client-deprecation.diff, derby-5840-06-aa-jdbc3-stubs.diff, derby-5840-07-aa-drda-for-each.diff,
derby-5840-08-aa-jdbc3-embedded.diff, derby-5840-09-aa-test-deprecation-and-unchecked.diff,
derby-5840-10-aa-derbynet-perf-system.diff, derby-5840-11-aa-engine-i18n-store-tools.diff,
derby-5840-12-aa-jdbcapi.diff, derby-5840-13-aa.diff, derby-5840-13-aa-remove-suppression.diff
> Using Java 5 language features forces us to compile code at level 5 or higher. At this
level, the compiler raises warnings not seen at lower levels. This issue is a place to discuss
and attach cleanup to eliminate these warnings.

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