Deserializing when using custom wrapper element about jackson-dataformat-xml HOT 9 CLOSED

Adding unit test: can reproduce the problem as described... will try to see what gives the problem.

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Looks like there is discrepancy between expected regular name, wrapper name (for test, changing local name to be 'notes' makes test pass for example).

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Managed to fix by checking and using wrapper name for deserialization, instead of property name.

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Strange. Things work ok when annotations are added on setters, but not when added on getters...

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Ok: needed to add quite a bit more code, workarounds than anticipated, but things now work.
New code should be more robust as well. Please let me know if I still managed to miss something...

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I appear to still be getting this, or something similar, in 2.1.3. I've got annotations setup to correctly create this:

<Root BuildVersion="1.1.1" Description="horribleformatthati'mstuckwith" DataInterchangeType="dit" Locale="local pub">
    <Batch name="botched">
        <Documents>
            <Document DocID="hg is better" DocType="rocksml" MimeType="daddytype">
                <Tags>
                    <Tag id="hello" TagName="icknd" TagDataType="pasta">of no value at all</Tag>
                    <Tag id="hello2" TagName="icknd2" TagDataType="pasta2">of no value at all2</Tag>
                </Tags>
            </Document>
            <Document DocID="git is better" DocType="sucksml" MimeType="mummytype">
                <Tags>
                    <Tag id="hell3o" TagName="ick3nd" TagDataType="p3asta">of no v3alue at all</Tag>
                    <Tag id="hello42" TagName="icknd42" TagDataType="pas4ta2">of no value at al4l2</Tag>
                </Tags>
            </Document>
        </Documents>
    </Batch>
</Root>

However it can not read it back in, giving the following slightly sanitised error:

Caused by: com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "Documents" (class com.example.bcn.tara.xml.perceptive.Batch), not marked as ignorable (2 known properties: , "name", "Document"])
 at [Source: java.io.FileInputStream@243f01d4; line: 1, column: 221] (through reference chain: com.example.bcn.tara.xml.Perceptive["Batch"]->com.example.bcn.tara.xml.perceptive.Batch["Documents"])
    at com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:79)
    at com.fasterxml.jackson.databind.DeserializationContext.reportUnknownProperty(DeserializationContext.java:579)
    at com.fasterxml.jackson.databind.deser.std.StdDeserializer.handleUnknownProperty(StdDeserializer.java:672)
    at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownProperty(BeanDeserializerBase.java:906)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:328)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:121)
    at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:375)
    at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:98)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:308)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:121)
    at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:2797)
    at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:1989)
    at com.example.bcn.tara.XMLMain.main(XMLMain.java:85)
    ... 6 more

The relevant lines from the Batch object:

    @JacksonXmlProperty(isAttribute=true)
    private String name;
    @JacksonXmlElementWrapper(localName="Documents")
    @JacksonXmlProperty(localName="Document")
    private List<Document> documents;

Let me know if I can help in any way. I'm happy to try snapshots if you deploy them to sonatype's OSS repo.

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FYI, I could, of course, serialise and deserialise in both JSON and YAML using 2.1.3. In the end having heard nothing back from you guys, I tried simple 2.6.9, and found it to not be simple at all. Then I tried XStream and it works superbly. I'm still interested in seeing this resolved, though, as I would REALLY like to use Jackson as my catch-all serialiser/deserialiser across all of XML, JSON, YAML in a single application.

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Sorry for slow response here. There are issues with List (de)serialization, and I hope they all come from a single root cause, to be fixed for Jackson 2.2.

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After fixing other issues (#47, #55), I think this may well have been fixed: if anyone thinks there are leftovers from this one, please file a new issue.

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