[Simple-support] Multiple custom boolean formats using @Convert

[Owen M. <ow...@bi...>]

Hi all,

I'm dealing with some inconsistent XML that I must parse. See below:

<example tfBool="true" ynBool="Y" />

You can see that the tfBool attribute will be parsed properly, but the
ynBool attribute needs special conversion. Here's my attempted solution:

@Root
public class Example {

    private static String testXML = "<example tfBool=\"true\" ynBool=\"Y\"
/>";


    @Attribute
    public boolean tfBool;


    @Attribute
    @Convert(Example.YesNoBooleanConverter.class)
    public boolean ynBool;


    public static class YesNoBooleanConverter implements Converter<Boolean>
{


        public Boolean read(InputNode node) throws Exception {
            return new Boolean(node.getValue().equals("Y"));
        }


        public void write(OutputNode node, Boolean value) throws Exception {
            node.setValue(value.booleanValue()?"Y":"N");
        }


    }


    public static void main(String[] args) throws Exception {
        Serializer s = new Persister(new AnnotationStrategy());
        Example e = s.read(Example.class, new StringReader(testXML));
        System.out.println("tfBool = " + e.tfBool);
        System.out.println("ynBool = " + e.ynBool);
    }

}

This code does not work. The output is:

tfBool = true
ynBool = false

As far as I can tell, YesNoBooleanConverter is never used. I'm assuming that
it's because the boolean primitive type already matches to an existing
Transformer implementation, so there's no way to use @Convert to use a
custom converter if it's already mapped by the PrimitiveMatcher.

I can't use my own custom Transform/Match setup in this case, because the
implementation is inconsistent (and as far as I can tell, this also
eliminates the RegistryStrategy as an option as well). If all boolean values
were represented by "Y" and "N", then I could set up a Matcher for boolean
and put together a Transform that converts between strings properly. I need
to convert standard boolean string representations for the first attribute
and custom boolean string representations for the second.

Is there any way to do this easily (without having to have a custom
converter for the whole class, for example)?


Owen