I've never tried to do a save on a CombinedConfiguration. Can you
provide a unit test that fails in a Jira issue?
Thanks,
Ralph
On May 7, 2009, at 5:00 PM, Jonathan Su wrote:
Hi,
I am using the CombinedConfiguration class to combine two
XMLConfigurations
and trying to save the result as xml. My code is as follows:
CombinedConfiguration cc = new
CombinedConfiguration(new
OverrideCombiner());
cc.addConfiguration(firstXMLConfig);
cc.addConfiguration(secondXMLConfig);
combinedConfig = new XMLConfiguration(cc);
combinedConfig.save("path/to/file.xml");
When I try to do the save operation however, I am getting the
following
exception:
Caused by: java.lang.ClassCastException:
org.apache.commons.configuration.tree.ViewNode cannot be cast to
org.apache.commons.configuration.HierarchicalConfiguration$Node
at
org.apache.commons.configuration.HierarchicalConfiguration
$BuilderVisitor.visitBeforeChildren(HierarchicalConfiguration.java:
1624)
at
org.apache.commons.configuration.HierarchicalConfiguration
$Node.visit(HierarchicalConfiguration.java:1329)
at
org.apache.commons.configuration.XMLConfiguration
$XMLBuilderVisitor.processDocument(XMLConfiguration.java:1321)
at
org
.apache
.commons
.configuration.XMLConfiguration.createDocument(XMLConfiguration.java:
759)
at
org
.apache
.commons.configuration.XMLConfiguration.save(XMLConfiguration.java:
878)
at
org
.apache.commons.configuration.AbstractHierarchicalFileConfiguration
$
FileConfigurationDelegate
.save(AbstractHierarchicalFileConfiguration.java:454)
at
org
.apache
.commons
.configuration
.AbstractFileConfiguration.save(AbstractFileConfiguration.java:546)
at
org
.apache
.commons
.configuration
.AbstractFileConfiguration.save(AbstractFileConfiguration.java:513)
at
org
.apache
.commons
.configuration
.AbstractFileConfiguration.save(AbstractFileConfiguration.java:491)
at
org
.apache
.commons
.configuration
.AbstractFileConfiguration.save(AbstractFileConfiguration.java:403)
... 26 more
It looks like ViewNode is created when firstXMLConfig and
secondXMLConfig
have a node with the same key in the combine process. Is there a way
to
convert all ViewNodes into HierarchicalConfiguration.Node? Or am I
using
this incorrectly?
Thanks,
Jonathan
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