[ http://issues.apache.org/jira/browse/DERBY-1298?page=all ]
Deepa Remesh updated DERBY-1298:
--------------------------------
Attachment: ClientTracing.java
This repro uses the example for ClientDataSource tracing in
http://db.apache.org/derby/papers/DerbyClientSpec.html#-N101A8
To run this repro, start network server, run the command "java ClientTracing".
The directory used for tracing "myTraceDir" has to be created before running
the command. This gives the following NPE:
java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:393)
at java.util.Properties.setProperty(Properties.java:102)
at
org.apache.derby.client.am.LogWriter.getProperties(LogWriter.java:1251)
at
org.apache.derby.client.am.LogWriter.traceConnectsEntry(LogWriter.java:1069)
at
org.apache.derby.client.am.LogWriter.traceConnectEntry(LogWriter.java:998)
at
org.apache.derby.client.am.Connection.initConnection(Connection.java:169)
at org.apache.derby.client.am.Connection.<init>(Connection.java:160)
at
org.apache.derby.client.net.NetConnection.<init>(NetConnection.java:225)
at
org.apache.derby.client.net.ClientJDBCObjectFactoryImpl.newNetConnection(ClientJDBCObject
FactoryImpl.java:212)
at
org.apache.derby.jdbc.ClientDataSource.getConnection(ClientDataSource.java:185)
at
ClientTracing.sampleConnectUsingSimpleDataSource(ClientTracing.java:44)
at ClientTracing.main(ClientTracing.java:10)
The reason for this is LogWriter.getProperties method tries to set all
propeties of ClientDataSource and this can give NPE if the value for any
property is null. The solution seems to be just to add a check before setting
the property:
if(value != null)
properties.setProperty(propertyKey, value);
> Tracing client data source gives NPE if all data source properties are not set
> ------------------------------------------------------------------------------
>
> Key: DERBY-1298
> URL: http://issues.apache.org/jira/browse/DERBY-1298
> Project: Derby
> Type: Bug
> Components: Network Client
> Versions: 10.2.0.0, 10.1.3.0
> Reporter: Deepa Remesh
> Priority: Minor
> Attachments: ClientTracing.java
>
> I found this when trying to capture client traces for another issue. If all
> the properties are set to some value, tracing works without problems. I will
> upload a repro with more details.
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