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Posted to derby-dev@db.apache.org by "Knut Anders Hatlen (JIRA)" <ji...@apache.org> on 2010/10/31 21:34:25 UTC
[jira] Commented: (DERBY-4880) Unchecked warnings in
JMXManagementService and VTI demos
[ https://issues.apache.org/jira/browse/DERBY-4880?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12926775#action_12926775 ]
Knut Anders Hatlen commented on DERBY-4880:
-------------------------------------------
I think the reason why we see these warnings only when compiled against the Java 6 libraries, was that StandardMBean's constructor, Class.getMethod() and Class.getConstructor() were not given generic signatures until Java 6.
> Unchecked warnings in JMXManagementService and VTI demos
> --------------------------------------------------------
>
> Key: DERBY-4880
> URL: https://issues.apache.org/jira/browse/DERBY-4880
> Project: Derby
> Issue Type: Improvement
> Components: Demos/Scripts, JMX
> Affects Versions: 10.7.1.0
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
> Priority: Minor
>
> These warnings I only see if java15compile.classpath points to Java 6 class libraries (either set explicitly in ant.properties, or implicitly by the property setter):
> [javac] /code/derby/trunk2/java/engine/org/apache/derby/impl/services/jmx/JMXManagementService.java:215: warning: [unchecked] unchecked conversion
> [javac] found : java.lang.Class
> [javac] required: java.lang.Class<java.lang.Object>
> [javac] new StandardMBean(bean, beanInterface) {
> [javac] ^
> [javac] /code/derby/trunk2/java/engine/org/apache/derby/impl/services/jmx/JMXManagementService.java:215: warning: [unchecked] unchecked method invocation: <T>StandardMBean(T,java.lang.Class<T>) in javax.management.StandardMBean is applied to (java.lang.Object,java.lang.Class)
> [javac] new StandardMBean(bean, beanInterface) {
> [javac] ^
> [javac] 2 warnings
> [javac] /code/derby/trunk2/java/demo/vtis/java/org/apache/derbyDemo/vtis/core/QueryVTIHelper.java:185: warning: [unchecked] unchecked call to getMethod(java.lang.String,java.lang.Class<?>...) as a member of the raw type java.lang.Class
> [javac] ( methodName, new Class[] { String.class } );
> [javac] ^
> [javac] /code/derby/trunk2/java/demo/vtis/java/org/apache/derbyDemo/vtis/core/XmlVTI.java:253: warning: [unchecked] unchecked call to getMethod(java.lang.String,java.lang.Class<?>...) as a member of the raw type java.lang.Class
> [javac] ( methodName, new Class[] { String.class } );
> [javac] ^
> [javac] /code/derby/trunk2/java/demo/vtis/java/org/apache/derbyDemo/vtis/core/XmlVTI.java:260: warning: [unchecked] unchecked call to getConstructor(java.lang.Class<?>...) as a member of the raw type java.lang.Class
> [javac] ( new Class[] { String.class, String.class, String[].class } );
> [javac] ^
> [javac] /code/derby/trunk2/java/demo/vtis/java/org/apache/derbyDemo/vtis/snapshot/Subscription.java:278: warning: [unchecked] unchecked call to getMethod(java.lang.String,java.lang.Class<?>...) as a member of the raw type java.lang.Class
> [javac] ( methodName, new Class[] {} );
> [javac] ^
> [javac] 4 warnings
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