[ 
https://issues.apache.org/jira/browse/CONFIGURATION-429?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Silas De Munck updated CONFIGURATION-429:
-----------------------------------------

    Description: 
{quote}
        <core>
                <multicore>
                        <numberOfCores>2</numberOfCores>
                </multicore>
                <singlecore />
        </core>
{quote}

In an XML configfile (see above) where I want to check if a specific node is 
specified. I do this using the containsKey() method on the configuration.
In this case it will return true for the key "core.singlecore" but not for the 
key "core.multicore".

If I change the multicore part to this (adding text as a child), it does return 
true.
{quote}
<multicore>
        ABC
        <numberOfCores>2</numberOfCores>
</multicore>
{quote}

As the containsKey() method depends on the getProperty() method, the same 
problem exists in that method.
In the first case:
"core.singlecore" returns an empty string
"core.multicore" returns null
and in the second case, "ABC" is returned.

I would like it to also return an empty string in the first case for 
"core.multicore".

This behaviour is caused by the code in lines 642-644 of XMLConfiguration.java 
(svn):
{quote}
       if (text.length() > 0 || (!node.hasChildren() && node != getRoot()))
        \{
            node.setValue(text);
        \}
{quote}

I think it can be changed to just this:
{quote}
        if (node != getRoot()) 
        \{
            node.setValue(text);
        \}
{quote}

  was:
{quote}
        <core>
                <multicore>
                        <numberOfCores>2</numberOfCores>
                </multicore>
                <singlecore />
        </core>
{quote}

In an XML configfile (see above) where I want to check if a specific node is 
specified. I do this using the containsKey() method on the configuration.
In this case it will return true for the key "core.singlecore" but not for the 
key "core.multicore".

If I change the multicore part to this (adding text as a child), it does return 
true.
{quote}
<multicore>
        ABC
        <numberOfCores>2</numberOfCores>
</multicore>
{quote}

As the containsKey() method depends on the getProperty() method, the same 
problem exists in that method.
In the first case:
"core.singlecore" returns an empty string
"core.multicore" returns null
and in the second case, "ABC" is returned.

I would like it to also return an empty string in the first case for 
"core.multicore".

This behaviour is caused by the code in lines 642-644 of XMLConfiguration.java 
(svn):
{quote}
       if (text.length() > 0 || (!node.hasChildren() && node != getRoot()))
        {
            node.setValue(text);
        }
{quote}

I think it can be changed to just this:
{quote}
        if (node != getRoot()) 
        {
            node.setValue(text);
        }
{quote}


> configuration values of nodes with children inconsistent
> --------------------------------------------------------
>
>                 Key: CONFIGURATION-429
>                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-429
>             Project: Commons Configuration
>          Issue Type: Bug
>    Affects Versions: 1.6
>            Reporter: Silas De Munck
>   Original Estimate: 0.08h
>  Remaining Estimate: 0.08h
>
> {quote}
>       <core>
>               <multicore>
>                       <numberOfCores>2</numberOfCores>
>               </multicore>
>               <singlecore />
>       </core>
> {quote}
> In an XML configfile (see above) where I want to check if a specific node is 
> specified. I do this using the containsKey() method on the configuration.
> In this case it will return true for the key "core.singlecore" but not for 
> the key "core.multicore".
> If I change the multicore part to this (adding text as a child), it does 
> return true.
> {quote}
> <multicore>
>       ABC
>       <numberOfCores>2</numberOfCores>
> </multicore>
> {quote}
> As the containsKey() method depends on the getProperty() method, the same 
> problem exists in that method.
> In the first case:
> "core.singlecore" returns an empty string
> "core.multicore" returns null
> and in the second case, "ABC" is returned.
> I would like it to also return an empty string in the first case for 
> "core.multicore".
> This behaviour is caused by the code in lines 642-644 of 
> XMLConfiguration.java (svn):
> {quote}
>        if (text.length() > 0 || (!node.hasChildren() && node != getRoot()))
>         \{
>             node.setValue(text);
>         \}
> {quote}
> I think it can be changed to just this:
> {quote}
>         if (node != getRoot()) 
>         \{
>             node.setValue(text);
>         \}
> {quote}

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