[jackson-xml] custom namespace prefix serialization/de-serialization

[Johann Schausberger]

Hello,

i am using jackson-dataformat-xml 2.9.3 with woodstox.

My goal i to write namespace prefixes, like this:

<parent xmlns:dc="http://some-url">
  <dc:child>value</dc:child>
<parent>

So the key part is to have a namespace like: xmlns:dc and to use it on child tags/attributes: <dc:child>

Is this possible with jackson?
If not, can this be acheived with overriding some woodstox functionality?

[Tatu Saloranta]

Adding namespace is easy enough: use `@JacksonXmlProperty` annotation, specifically with `namespace` property set to URI.

There is no way to directly suggest prefix to use; one generated automatically will be used ("wstxns1" etc I think by default).

Since prefixes have no semantics, this should not matter for processors; processing only considers namespace URIs, not prefixes.

If you care deeply about mappings, yes, Woodstox does have means to suggest bindings to use: either for basename ("wstxns"),

or, for suggesting specific prefix for namespace URI. For latter I don't remember if this is via factory or does it require actual

XMLStreamWriter.

-+ Tatu +-

 

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[Johann Schausberger]

thank you for your response!
i unfortunately have to implement a strict format and have to achieve the prefix. i will have a look at streamwriter and factory.

john

On Thursday, January 25, 2018 at 1:48:41 AM UTC+1, Tatu Saloranta wrote:

On Wed, Jan 24, 2018 at 6:48 AM, Johann Schausberger <jschau...@gmail.com> wrote:

Hello,

i am using jackson-dataformat-xml 2.9.3 with woodstox.

My goal i to write namespace prefixes, like this:

<parent xmlns:dc="http://some-url">
  <dc:child>value</dc:child>
<parent>

So the key part is to have a namespace like: xmlns:dc and to use it on child tags/attributes: <dc:child>

Is this possible with jackson?
If not, can this be acheived with overriding some woodstox functionality?

Adding namespace is easy enough: use `@JacksonXmlProperty` annotation, specifically with `namespace` property set to URI.

There is no way to directly suggest prefix to use; one generated automatically will be used ("wstxns1" etc I think by default).

Since prefixes have no semantics, this should not matter for processors; processing only considers namespace URIs, not prefixes.

If you care deeply about mappings, yes, Woodstox does have means to suggest bindings to use: either for basename ("wstxns"),

or, for suggesting specific prefix for namespace URI. For latter I don't remember if this is via factory or does it require actual

XMLStreamWriter.

-+ Tatu +-

 

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