[jboss-jira] [JBoss JIRA] Closed: (JBAS-3401) NPE in jdk5 javax.management.MBeanOperationInfo.equals() (affects jmx-console)

[Dimitris Andreadis (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBAS-3401?page=all ]

Dimitris Andreadis closed JBAS-3401.
------------------------------------

    Resolution: Done

Added <description> elements to avoid NPE

> NPE in jdk5 javax.management.MBeanOperationInfo.equals() (affects jmx-console)
> ------------------------------------------------------------------------------
>
>                 Key: JBAS-3401
>                 URL: http://jira.jboss.com/jira/browse/JBAS-3401
>             Project: JBoss Application Server
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Management services
>            Reporter: Dimitris Andreadis
>         Assigned To: Dimitris Andreadis
>             Fix For: JBossAS-5.0.0.Beta
>
>
> The  javax.management.MBeanOperationInfo.equals()  of jdk5 produces NPEs when any field of the "other" object is null: 
>     public boolean equals(Object o) {
> 	if (o == this)
> 	    return true;
> 	if (!(o instanceof MBeanOperationInfo))
> 	    return false;
> 	MBeanOperationInfo p = (MBeanOperationInfo) o;
> 	return (p.getName().equals(getName()) &&
> 		p.getReturnType().equals(getReturnType()) &&
> 		p.getDescription().equals(getDescription()) &&
> 		p.getImpact() == getImpact() &&
> 		Arrays.equals(p.fastGetSignature(), fastGetSignature()));
>     }
> This could be a jdk bug, however the problem appears in when viewing the MainDeployer mbean through the jmx-console, due to the descriptor field of some "deploy" operation being null in the xmbean descriptor.
> org.apache.jasper.JasperException: Exception in JSP: /inspectMBean.jsp:94
> 91:    {
> 92:       MBeanOperationInfo opInfo = operationInfo[a];
> 93:       System.out.println(String.valueOf(a) + opInfo);
> 94:       operationInfoIndexMap.put(opInfo, String.valueOf(a));
> 95:    }
> 96: 
> 97:    Arrays.sort(operationInfo, MBEAN_FEATURE_INFO_COMPARATOR);
> root cause 
> java.lang.NullPointerException
> 	javax.management.MBeanOperationInfo.equals(MBeanOperationInfo.java:209)
> 	java.util.HashMap.eq(HashMap.java:277)
> 	java.util.HashMap.put(HashMap.java:386)
> 	org.apache.jsp.inspectMBean_jsp._jspService(inspectMBean_jsp.java:155)
> 	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
> The problem doesn't affect Branch_4_0, since the inspectMBean.jsp code is different

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