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The Abdera JSON Writer serializes Atom objects into a JSON format. The output depends largely on what Abdera Model object is being serialized. Null values are omitted from the output.

Example Serialization: http://www.snellspace.com/public/atom2json.txt

See also http://www.ibm.com/developerworks/library/x-atom2json.html

Serializing org.apache.abdera.model.Document

The fields correspond to the various getters on the Document object and represent information acquired primarily from the HTTP Headers of the source Atom document.

Field

Description

base

The Base URI

charset

The charset encoding

contenttype

The MIME media type of the document

etag

The Entity Tag of the document

lastmodified

The number of milliseconds since the epoch indicating the value of the Last-Modified header

language

The value of the Content-Language header

slug

The value of the Slug header

whitespace

false if insignificant whitespace should be ignored. equivalent to xml:space

root

json serialization of the root element

Serializing org.apache.abdera.model.Feed

Produces:

Field

Description

id

The atom:id value

title

serialization of the atom:title

subtitle

serialization of the atom:subtitle

rights

serialization of the atom:rights

updated

number of milliseconds since the epoch, serialization of the atom:updated

generator

serialization of atom:generator

icon

absolute URI, serialization of atom:icon

logo

absolute URI, serialization of atom:logo

authors

array of serialized atom:author objects, see person serialization below

contributors

array of serialized atom:contributor objects, see person serialization below

links

array of serialized atom:link objects

categories

array of serialized atom:category objects

complete

true if the feed is marked with fh:complete from RFC 5005

archive

true if the feed is marked with fh:archive from RFC 5005

entries

array of serialized atom:entry objects

extensions

array of serialized extension objects (any element not in the Atom namespace)

attributes

array of serialized extension attributes ( any attribute not in the Atom namespace )

Serializing org.apache.abdera.model.Entry

Field

Description

id

The atom:id value

title

serialization of the atom:title

summary

serialization of the atom:summary

rights

serialization of the atom:rights

updated

number of milliseconds since the epoch, serialization of the atom:updated

published

number of milliseconds since the epoch, serialization of the atom:published

edited

number of milliseconds since the epoch, serialization of the app:edited

authors

array of serialized atom:author objects, see person serialization below

contributors

array of serialized atom:contributor objects, see person serialization below

links

array of serialized atom:link objects

categories

array of serialized atom:category objects

extensions

array of serialized extension objects (any element not in the Atom namespace)

attributes

array of serialized extension attributes ( any attribute not in the Atom namespace )

inreplyto

array of serialized thr:in-reply-to elements

replies

array of serialized "replies" links with comment counts

licenses

array of serialized "license" links

Serializing atom:category

Field

Description

term

atom:category/@term

label

atom:category/@label

scheme

atom:category/@scheme (absolute uri)

extensions

array of serialized extension objects (any element not in the Atom namespace)

attributes

array of serialized extension attributes ( any attribute not in the Atom namespace )

dir

rtl or ltr if Atom Bidi Attribute extension is used

language

in scope xml:lang

whitespace

false if insignificant whitespace should be ignored. equivalent to xml:space

Serializing atom:generator

Field

Description

version

atom:generator/@version

uri

atom:generator/@uri

value

atom:generator/text()

dir

rtl or ltr if Atom Bidi Attribute extension is used

language

in scope xml:lang

whitespace

false if insignificant whitespace should be ignored. equivalent to xml:space

Serializing atom:link

Field

Description

href

atom:link/@href

rel

atom:link/@rel

hreflang

atom:link/@hreflang

title

atom:link/@title

length

atom:link/@length

type

atom:link/@type

extensions

array of serialized extension objects (any element not in the Atom namespace)

attributes

array of serialized extension attributes ( any attribute not in the Atom namespace )

dir

rtl or ltr if Atom Bidi Attribute extension is used

language

in-scope xml:lang

whitespace

false if insignificant whitespace should be ignored. equivalent to xml:space

Serializing atom:person

Field

Description

name

atom:author/@name or atom:contributor/@name

email

atom:author/@email or atom:contributor/@email

uri

atom:author/@uri or atom:contributor/@uri (absolute uri)

extensions

array of serialized extension objects (any element not in the Atom namespace)

attributes

array of serialized extension attributes ( any attribute not in the Atom namespace )

dir

rtl or ltr if Atom Bidi Attribute extension is used

language

in-scope xml:lang

whitespace

false if insignificant whitespace should be ignored. equivalent to xml:space

Serializing Atom Text constructs (e.g. atom:title, atom:summary, etc)

Field

Description

type

"text", "html", or "xhtml"

value

string or xhtml hash

display

string

dir

rtl or ltr if Atom Bidi Attribute extension is used

language

in-scope xml:lang

whitespace

false if insignificant whitespace should be ignored. equivalent to xml:space

base

in-scope xml:base

XHTML content is serialized as a structure of hash objects within the value field. For a displayable version, use the display field.

Serializing atom:content

Field

Description

type

"text", "html", "xhtml" or MIME media type

value

string or xhtml hash

display

string (only when type equals text, html or xhtml)

src

atom:content/@src

dir

rtl or ltr if Atom Bidi Attribute extension is used

language

in-scope xml:lang

whitespace

false if insignificant whitespace should be ignored. equivalent to xml:space

base

in-scope xml:base

XHTML content is serialized as a structure of hash objects within the value field. For a displayable version, use the display field.

Serializing app:control

Field

Description

draft

true or false, app:control/app:draft

Serializing app:service

Field

Description

workspaces

array of serialized app:workspace objects

extensions

array of serialized extension objects (any element not in the Atom namespace)

attributes

array of serialized extension attributes ( any attribute not in the Atom namespace )

Serializing app:workspace

Field

Description

collections

array of serialized app:collection objects

title

app:workspace/atom:title

extensions

array of serialized extension objects (any element not in the Atom namespace)

attributes

array of serialized extension attributes ( any attribute not in the Atom namespace )

Serializing app:collection

Field

Description

href

app:collection/@href

title

app:collection/atom:title

accept

array of MIME media types

categories

array of serialized app:categories objects

extensions

array of serialized extension objects (any element not in the Atom namespace)

attributes

array of serialized extension attributes ( any attribute not in the Atom namespace )

Serializing app:categories

Field

Description

fixed

true or false, app:categories/@fixed

scheme

app:categories/@scheme

categories

array of serialized atom:category objects

extensions

array of serialized extension objects (any element not in the Atom namespace)

attributes

array of serialized extension attributes ( any attribute not in the Atom namespace )

Serializing thr:in-reply-to

Field

Description

ref

thr:in-reply-to/@ref

href

thr:in-reply-to/@href

type

thr:in-reply-to/@type

source

thr:in-reply-to/@source

Serializing extension elements

Field

Description

qname

serialized QName object

dir

rtl or ltr if Atom Bidi Attribute extension is used

language

in-scope xml:lang

whitespace

false if insignificant whitespace should be ignored. equivalent to xml:space

base

in-scope xml:base

attributes

array of serialized attributes

children

array of serialized children

Serializing attributes

Field

Description

qname

serialized QName object

value

string value

Serializing QName

Field

Description

name

QName localpart

ns

QName namespace URI

prefix

QName prefix

Accessing the serialized data

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