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https://issues.apache.org/jira/browse/FELIX-5666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16110361#comment-16110361
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David Leangen commented on FELIX-5666:
--------------------------------------
I found a "temporary" solution: creating a rule.
{code}
static class MapTargetRule implements TargetRule {
@Override
public ConverterFunction getFunction() {
return new MapConverterFunction();
}
@Override
public Type getTargetType() {
return Map.class;
}
}
static class MapConverterFunction implements ConverterFunction {
@Override
public Object apply( Object obj, Type targetType ) throws Exception {
return Converters
.standardConverter()
.convert(obj)
.sourceAsDTO()
.to(targetType);
}
}
{code}
The reason I write "temporary" is because this rule seems too generic and the
usage, I am guessing, so common, that it is a bit heavy-handed to be required
to declare this type of rule each time.
But in any case, the serialization of a DTO-type object now works when called
like this:
{code}
String s = serializer
.serialize( obj )
.with(Converters.newConverterBuilder().rule(new
MapTargetRule()).build())
.toString();
{code}
What do you think we should do?
I just committed another test case so you can see. It is in
JsonBackingObjectSerializationTest.
> Serializer goes into infinite loop
> ----------------------------------
>
> Key: FELIX-5666
> URL: https://issues.apache.org/jira/browse/FELIX-5666
> Project: Felix
> Issue Type: Bug
> Components: Converter
> Reporter: David Leangen
>
> I'm only guessing as to what the problem is, following some stepping through
> the code. I could not find any similar existing test cases, but if the
> following does not immediately click for [~bosschaert], I will try to add one.
> It appears that, when serializing an object to a "DTO-Type" object to a Map,
> some kind of backing object is created.
> If the backing object contains a field that instantiates the same DTO, then
> the loop gets created.
> Example:
> {code}
> public class MyDtoType {
> public String id;
> public MyDtoType( String anID ) {
> id = anID;
> }
> public static MyDtoType error() {
> return new MyDtoType( "ERROR" );
> }
> }
> {code}
> It looks like the serializer keeps calling the error() method infinitely, but
> I am not able to easily pinpoint where this happens.
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