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https://issues.apache.org/jira/browse/DERBY-3069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rick Hillegas updated DERBY-3069:
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Attachment: derby-3069-01-varargs-aa.diff
Attaching derby-3069-01-aa.diff. This allows you to run functions which are
bound to methods which have vararg signatures. Touches the following files:
M java/engine/org/apache/derby/iapi/services/loader/ClassInspector.java
This is the compile-time bind() logic. This allows you to resolve function
declarations against methods which have vararg signatures. This also exposes
helper methods for determining whether a method has a vararg signature.
M java/engine/org/apache/derby/impl/sql/compile/MethodCallNode.java
M java/engine/org/apache/derby/impl/sql/compile/StaticMethodCallNode.java
This is the compile-time generate() piece, which generates the byte code needed
to invoke varags methods. For varargs signatures, this method builds a
concluding array argument and stuffs it with the trailing arguments specified
by the user.
> Derby does not resolve functions bound to methods with varargs.
> ---------------------------------------------------------------
>
> Key: DERBY-3069
> URL: https://issues.apache.org/jira/browse/DERBY-3069
> Project: Derby
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 10.0.2.0, 10.0.2.1, 10.1.1.0, 10.1.2.1, 10.1.3.1,
> 10.2.1.6, 10.2.2.0, 10.3.1.4
> Reporter: Rick Hillegas
> Assignee: Rick Hillegas
> Attachments: derby-3069-01-varargs-aa.diff, z.java, z.sql
>
>
> Varargs were added in Java 5. It would be nice if Derby let you invoke a
> function bound to a method with a variable length argument list. The
> Reference Guide states a small number of restrictions for methods which can
> be invoked as Derby functions: They must be public, static, and not have
> arguments which are long datatypes. I see no reason that Derby shouldn't be
> able to resolve and invoke functions which are bound to methods which don't
> suffer these limitations but which have variable argument lists.
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