Re: Example of JAXB and HashMap serialization?

2007-12-13 Thread Kaleb Walton 

Chris,

Thank you for the detailed example! I'll definitely look into this
implementation when the need arises in the future (right now we're getting
by without them, but I know we'll need them at some point). Glad we're not
the only ones who thought this was an important missing piece.

Regards,
Kaleb


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Kaleb,

This is an interesting question, and one which I have encountered twice
in the last week. I came up with a solution which works using
@XmlAdaptor (wait, don't write it off just yet...)

First a caveat: this only works if you represent the map as a *wrapped*
list of {k,v} pairs. Probably the simplest XML representation would be:

M xmlns=http://...;
  MyMap
A value=1 key=A/
A value=3 key=C/
A value=2 key=B/
  /MyMap
/M

By wrapped, I mean the model must be something like M=(A+), and not
M=(A+, B). I'm not saying the latter is impossible, only that I couldn't
get it to work in the time I had had on this.

So, let's look at class 'M', which is the class containing the map:

@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement(name = M)
public class M {
@XmlElement(name = MyMap, required = true)
@XmlJavaTypeAdapter(MapAdaptor.class)
private final MapString, String a = new HashMapString, String();
public MapString, String getA() {
return this.a;
}
}

Now we need to implement MapAdaptor, which maps the Map to something
JAXB understands:

public class MapAdaptor extends XmlAdapterMyMap, MapString,String {

@Override
public MyMap marshal(MapString,String v) throws Exception {
MyMap myMap = new MyMap();
ListA aList = myMap.getA();
for ( Map.EntryString,String e : v.entrySet() ) {
aList.add(new A(e.getKey(), e.getValue()));
}
return myMap;
}

@Override
public MapString,String unmarshal(MyMap v) throws Exception {
MapString,String map = new HashMapString,String();
for ( A e : v.getA() ) {
map.put(e.getKey(), e.getValue());
}
return map;
}
}

So that maps MapString, String to a new class, MyMap, which might look
like this:

@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement(name = MyMap)
public class MyMap {
@XmlElement(name = A, required = true)
private final ListA a = new ArrayListA();
public ListA getA() {
return this.a;
}
}

And finally, each item in the list is represented by a new class A:

@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement(name = A)
public class A {

@XmlAttribute(name = key, required = true)
private final String key;
@XmlAttribute(name = value, required = true)
private final String value;

public A(String key, String value) {
this.key = key;
this.value = value;
}

public A() {
this.key = null;
this.value = null;
}

public String getKey() {
return key;
}

public String getValue() {
return value;
}
}

This is a functional, albeit circuitous and slightly

Re: Example of JAXB and HashMap serialization?

2007-11-29 Thread Kaleb Walton 

Glen,

Thanks for the response. It is a JAXB specific question and yes I did
google for both of those but they turn up pages related to an XmlAdapter
which doesn't seem like the right solution. In addition we don't use
annotations (we use the InlineAnnotationsReader from JBoss) so I'm not sure
how I'd configure the XmlAdapter anyways. I was looking for a simpler
solution if one was available - just feeling out the CXF group to see if
anyone else has solved this with JAXB+CXF.

Regards,
Kaleb


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  |Glen Mazza [EMAIL PROTECTED]   
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  |11/28/2007 11:28 PM  
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Are you sure this is a CXF/JAXB-specific question instead of a more
generic JAXB question?  (CXF's JAXB is the same as GlassFish Metro's,
for example.)  Does googling JAXB and HashMap get you anything
useful?

Glen

Am Mittwoch, den 28.11.2007, 10:13 -0500 schrieb Kaleb Walton:

 I'm writing documentation for how to write services and got to a point
 where I have to say Do not use HashMap's in any of your services as CXF
+
 JAXB does not support serializing HashMaps. I'd rather not have to say
 that - are there any examples out there of how to get HashMaps to
serialize
 using CXF + JAXB?

 I've seen the XmlAdapter stuff out there but that doesn't suit my needs
for
 two reasons:

 1) We don't use annotations
 2) We want to use HashMaps, not pseudo-maps

 I may be misunderstanding the solutions pointed out in the articles, if
so
 please help me see the light!

 Regards,
 Kaleb

Re: Example of JAXB and HashMap serialization?

2007-11-29 Thread Chris McClelland 
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   |Re: Example of JAXB and HashMap serialization? 
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 Are you sure this is a CXF/JAXB-specific question instead of a more
 generic JAXB question?  (CXF's JAXB is the same as GlassFish Metro's,
 for example.)  Does googling JAXB and HashMap get you anything
 useful?
 
 Glen
 
 Am Mittwoch, den 28.11.2007, 10:13 -0500 schrieb Kaleb Walton:
 I'm writing documentation for how to write services and got to a point
 where I have to say Do not use HashMap's in any of your services as CXF
 +
 JAXB does not support serializing HashMaps. I'd rather not have to say
 that - are there any examples out there of how to get HashMaps to
 serialize
 using CXF + JAXB?

 I've seen the XmlAdapter stuff out there but that doesn't suit my needs
 for
 two reasons:

 1) We don't use annotations
 2) We want to use HashMaps, not pseudo-maps

 I may be misunderstanding the solutions pointed out in the articles, if
 so
 please help me see the light!

 Regards,
 Kaleb

Example of JAXB and HashMap serialization?

2007-11-28 Thread Kaleb Walton 


I'm writing documentation for how to write services and got to a point
where I have to say Do not use HashMap's in any of your services as CXF +
JAXB does not support serializing HashMaps. I'd rather not have to say
that - are there any examples out there of how to get HashMaps to serialize
using CXF + JAXB?

I've seen the XmlAdapter stuff out there but that doesn't suit my needs for
two reasons:

1) We don't use annotations
2) We want to use HashMaps, not pseudo-maps

I may be misunderstanding the solutions pointed out in the articles, if so
please help me see the light!

Regards,
Kaleb

RE: Example of JAXB and HashMap serialization?

2007-11-28 Thread Kaleb Walton 

Great, thank you for the clarification - I hope 'supposedly' turns into
'definitely' ;-). We can hold out for the maturation of the trunk and some
examples to bubble up before diving in.

Regards,
Kaleb


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  |Benson Margulies [EMAIL PROTECTED]   
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  |11/28/2007 12:55 PM  
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  |RE: Example of JAXB and HashMap serialization?   
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It can't be done well with the JAXB we have in 2.0.x, I am told.
Aegis does it nicely. The trunk uses new stuff in JAXB, which supposedly
supports it, but I don't have any experience.

 -Original Message-
 From: Kaleb Walton [mailto:[EMAIL PROTECTED]
 Sent: Wednesday, November 28, 2007 10:14 AM
 To: cxf-user@incubator.apache.org
 Subject: Example of JAXB and HashMap serialization?



 I'm writing documentation for how to write services and got
 to a point where I have to say Do not use HashMap's in any
 of your services as CXF + JAXB does not support serializing
 HashMaps. I'd rather not have to say that - are there any
 examples out there of how to get HashMaps to serialize using
 CXF + JAXB?

 I've seen the XmlAdapter stuff out there but that doesn't
 suit my needs for two reasons:

 1) We don't use annotations
 2) We want to use HashMaps, not pseudo-maps

 I may be misunderstanding the solutions pointed out in the
 articles, if so please help me see the light!

 Regards,
 Kaleb

RE: Example of JAXB and HashMap serialization?

2007-11-28 Thread Benson Margulies 
It can't be done well with the JAXB we have in 2.0.x, I am told. 
Aegis does it nicely. The trunk uses new stuff in JAXB, which supposedly
supports it, but I don't have any experience.

 -Original Message-
 From: Kaleb Walton [mailto:[EMAIL PROTECTED] 
 Sent: Wednesday, November 28, 2007 10:14 AM
 To: cxf-user@incubator.apache.org
 Subject: Example of JAXB and HashMap serialization?
 
 
 
 I'm writing documentation for how to write services and got 
 to a point where I have to say Do not use HashMap's in any 
 of your services as CXF + JAXB does not support serializing 
 HashMaps. I'd rather not have to say that - are there any 
 examples out there of how to get HashMaps to serialize using 
 CXF + JAXB?
 
 I've seen the XmlAdapter stuff out there but that doesn't 
 suit my needs for two reasons:
 
 1) We don't use annotations
 2) We want to use HashMaps, not pseudo-maps
 
 I may be misunderstanding the solutions pointed out in the 
 articles, if so please help me see the light!
 
 Regards,
 Kaleb

Re: Example of JAXB and HashMap serialization?

2007-11-28 Thread Glen Mazza 
Are you sure this is a CXF/JAXB-specific question instead of a more
generic JAXB question?  (CXF's JAXB is the same as GlassFish Metro's,
for example.)  Does googling JAXB and HashMap get you anything
useful?

Glen

Am Mittwoch, den 28.11.2007, 10:13 -0500 schrieb Kaleb Walton:
 
 I'm writing documentation for how to write services and got to a point
 where I have to say Do not use HashMap's in any of your services as CXF +
 JAXB does not support serializing HashMaps. I'd rather not have to say
 that - are there any examples out there of how to get HashMaps to serialize
 using CXF + JAXB?
 
 I've seen the XmlAdapter stuff out there but that doesn't suit my needs for
 two reasons:
 
 1) We don't use annotations
 2) We want to use HashMaps, not pseudo-maps
 
 I may be misunderstanding the solutions pointed out in the articles, if so
 please help me see the light!
 
 Regards,
 Kaleb