org.apache.abdera.model

Interface Content

All Superinterfaces:

Base, Cloneable, Element, Iterable<Element>

public interface Content
extends Element

Represents an atom:content element.

Atom has a very clearly defined and extremely flexible content model. The model allows for five basic types of content:

• Text, consisting of content that is to be interpreted as plain text with no markup. For instance, <content type="text">&lt;content&gt;</content> is interpreted as literal characer "<" followed by the word "content", followed by the literal character ">".
• HTML, consisting of content that is to be interpreted as escaped HTML markup. For instance, <content type="html">&lt;b&gt;content&lt;/b&gt;</content> is interpreted as the word "content" surrounded by the HTML <b> and </b> tags.
• XHTML, consisting of well-formed XHTML content wrapped in an XHTML div element. For instance, <content type="xhtml"><div xmlns="http://www.w3.org/1999/xhtml"><b>Content</b></div></content>.
• XML, consisting of well-formed XML content. For instance, <content type="application/xml"><a xmlns="..."><b><c/></b></a></content>. The content could, alternatively, be linked to via the src attribute, <content type="application/xml" src="http://example.org/foo.xml"/>.
• Media, consisting of content conforming to any MIME media type.
  • Text media types are encoded literally, e.g. <content type="text/calendar">BEGIN:VCALENDAR...</content>.
  • Other media types are encoded as Base64 strings, e.g. <content type="image/jpeg">{Base64}</content>.
  • Alternatively, media content may use the src attribute, <content type="text/calendar" src="http://example.org/foo.cal"/>, <content type="image/jpeg" src="http://example.org/foo.jpg" />

Per RFC4287:

  The "atom:content" element either contains or links to the content of
  the entry.  The content of atom:content is Language-Sensitive.

  atomInlineTextContent =
     element atom:content {
        atomCommonAttributes,
        attribute type { "text" | "html" }?,
        (text)*
     }

  atomInlineXHTMLContent =
     element atom:content {
        atomCommonAttributes,
        attribute type { "xhtml" },
        xhtmlDiv
     }
  atomInlineOtherContent =
     element atom:content {
        atomCommonAttributes,
        attribute type { atomMediaType }?,
        (text|anyElement)*
     }

  atomOutOfLineContent =
     element atom:content {
        atomCommonAttributes,
        attribute type { atomMediaType }?,
        attribute src { atomUri },
        empty
     }

  atomContent = atomInlineTextContent
   | atomInlineXHTMLContent
   | atomInlineOtherContent
   | atomOutOfLineContent

 

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	Content.Type Used to identify the type of content

Method Summary

Modifier and Type	Method and Description
Content.Type	getContentType() Returns the Content Type
DataHandler	getDataHandler() Attempts to Base64 decode the string value of the content element.
MimeType	getMimeType() RFC4287: On the atom:content element, the value of the "type" attribute MAY be one of "text", "html", or "xhtml".
IRI	getResolvedSrc() Returns the fully qualified URI form of the content src attribute.
IRI	getSrc() RFC4287: atom:content MAY have a "src" attribute, whose value MUST be an IRI reference.
String	getValue() Returns the string value of this atom:content element
<T extends Element> T	getValueElement() Return the value element or null if type="text", type="html" or type is some non-XML media type
String	getWrappedValue() Return the string value of the atom:content element with the enclosing div tag if type="xhtml"
Content	setContentType(Content.Type type) Set the Content Type
Content	setDataHandler(DataHandler dataHandler) Sets the string value of the content element by Base64 encoding the specifed byte array.
Content	setMimeType(String type) RFC4287: On the atom:content element, the value of the "type" attribute MAY be one of "text", "html", or "xhtml".
Content	setSrc(String src) RFC4287: atom:content MAY have a "src" attribute, whose value MUST be an IRI reference.
Content	setValue(String value) Set the string value of the atom:content element
<T extends Element> Content	setValueElement(T value) Set the value element of the content.
Content	setWrappedValue(String wrappedValue) Set the string value of the atom:content with the enclosing div tag

Methods inherited from interface org.apache.abdera.model.Element

declareNS, discard, getAttributes, getAttributeValue, getAttributeValue, getBaseUri, getDocument, getElements, getExtensionAttributes, getFirstChild, getFirstChild, getLanguage, getLanguageTag, getLocale, getMustPreserveWhitespace, getNamespaces, getNextSibling, getNextSibling, getParentElement, getPreviousSibling, getPreviousSibling, getQName, getResolvedBaseUri, getText, removeAttribute, removeAttribute, setAttributeValue, setAttributeValue, setBaseUri, setBaseUri, setLanguage, setMustPreserveWhitespace, setParentElement, setText, setText

Methods inherited from interface org.apache.abdera.model.Base

addComment, clone, complete, getDefaultWriterOptions, getFactory, writeTo, writeTo, writeTo, writeTo, writeTo, writeTo, writeTo, writeTo, writeTo, writeTo, writeTo, writeTo

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Method Detail

getContentType

Content.Type getContentType()

Returns the Content Type

Returns:

The Content Type

setContentType

Content setContentType(Content.Type type)

Set the Content Type

Parameters:

type - The Content Type

getValueElement

<T extends Element> T getValueElement()

Return the value element or null if type="text", type="html" or type is some non-XML media type

Returns:

The first child element of the atom:content element or null

setValueElement

<T extends Element> Content setValueElement(T value)

Set the value element of the content. If the value is a Div, the type attribute will be set to type="xhtml", otherwise, the attribute will be set to type="application/xml"

Parameters:

value - The element to set

getMimeType

MimeType getMimeType()

RFC4287: On the atom:content element, the value of the "type" attribute MAY be one of "text", "html", or "xhtml". Failing that, it MUST conform to the syntax of a MIME media type, but MUST NOT be a composite type. If neither the type attribute nor the src attribute is provided, Atom Processors MUST behave as though the type attribute were present with a value of "text".

Returns:

null if type = text, html or xhtml, otherwise a media type

setMimeType

Content setMimeType(String type)

RFC4287: On the atom:content element, the value of the "type" attribute MAY be one of "text", "html", or "xhtml". Failing that, it MUST conform to the syntax of a MIME media type, but MUST NOT be a composite type. If neither the type attribute nor the src attribute is provided, Atom Processors MUST behave as though the type attribute were present with a value of "text".

Parameters:

type - The media type

Throws:

MimeTypeParseException - if the media type is malformed

getSrc

IRI getSrc()

RFC4287: atom:content MAY have a "src" attribute, whose value MUST be an IRI reference. If the "src" attribute is present, atom:content MUST be empty. Atom Processors MAY use the IRI to retrieve the content and MAY choose to ignore remote content or to present it in a different manner than local content.

If the "src" attribute is present, the "type" attribute SHOULD be provided and MUST be a MIME media type, rather than "text", "html", or "xhtml".

Returns:

The IRI value of the src attribute or null if none

Throws:

IRISyntaxException - if the src attribute value is malformed

getResolvedSrc

IRI getResolvedSrc()

Returns the fully qualified URI form of the content src attribute.

Returns:

The IRI value of the src attribute resolved against the in-scope Base URI

Throws:

IRISyntaxException - if the src attribute value is malformed

setSrc

Content setSrc(String src)

RFC4287: atom:content MAY have a "src" attribute, whose value MUST be an IRI reference. If the "src" attribute is present, atom:content MUST be empty. Atom Processors MAY use the IRI to retrieve the content and MAY choose to ignore remote content or to present it in a different manner than local content.

If the "src" attribute is present, the "type" attribute SHOULD be provided and MUST be a MIME media type, rather than "text", "html", or "xhtml".

Parameters:

src - The IRI to use as the src attribute value for the content

Throws:

IRISyntaxException - if the src value is malformed

getDataHandler

DataHandler getDataHandler()

Attempts to Base64 decode the string value of the content element.

Returns:

A DataHandler or null

Throws:

UnsupportedOperationException - if type = text, html, xhtml, or any application/*+xml, or text/* type

setDataHandler

Content setDataHandler(DataHandler dataHandler)

Sets the string value of the content element by Base64 encoding the specifed byte array.

Parameters:

dataHandler - The DataHandler for the binary content requiring Base64 encoding

Throws:

UnsupportedOperationException - if type = text, html, xhtml, or any application/*+xml, or text/* type

getValue

String getValue()

Returns the string value of this atom:content element

Returns:

The string value

setValue

Content setValue(String value)

Set the string value of the atom:content element

Parameters:

value - The string value

getWrappedValue

String getWrappedValue()

Return the string value of the atom:content element with the enclosing div tag if type="xhtml"

Returns:

The div wrapped value

setWrappedValue

Content setWrappedValue(String wrappedValue)

Set the string value of the atom:content with the enclosing div tag

Parameters:

wrappedValue - The string value with the wrapping div tag