org.jdom2.output.support
Class WalkerPRESERVE

java.lang.Object
  org.jdom2.output.support.WalkerPRESERVE

All Implemented Interfaces:

Walker

public class WalkerPRESERVE
extends java.lang.Object
implements Walker

This Walker implementation walks a list of Content in it's original RAW format. There is no text manipulation, and all content will be returned as the input type. In other words, next() will never be null, and text() will always be null.

Author:

Rolf Lear

Constructor Summary

WalkerPRESERVE(java.util.List<? extends Content> content)
Create a Walker that preserves all content in its raw state.

Method Summary

boolean	hasNext() Behaves similarly to to a regular Iterator
boolean	isAllText() If all the content in this walker is empty, or if whatever content is available is Text-like.
boolean	isAllWhitespace() If all the content is Text-like (Walker.isAllText() returns true), and additionally that any content is either Text or CDATA, and that the values of these Text/CDATA members are all XML Whitespace.
boolean	isCDATA() If the previous next() method returned null, then this will indicate whether the current text() value is CDATA or regular Text.
Content	next() Similar to an Iterator, but null return values need special treatment.
java.lang.String	text() If the previous call to next() returned null, then this will return the required text to be processed.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WalkerPRESERVE

public WalkerPRESERVE(java.util.List<? extends Content> content)

Create a Walker that preserves all content in its raw state.

Parameters:

content - the content to walk.

Method Detail

isAllText

public boolean isAllText()

Description copied from interface: Walker

If all the content in this walker is empty, or if whatever content is available is Text-like.

Text-like content is considered to be Text, CDATA, EntityRef, or any (potentially mixed) sequence of these types, but no other types.

Specified by:

isAllText in interface Walker

Returns:

true if there is no content, or all content is Text

hasNext

public boolean hasNext()

Description copied from interface: Walker

Behaves similarly to to a regular Iterator

Specified by:

hasNext in interface Walker

Returns:

true if there is more content to be processed

next

public Content next()

Description copied from interface: Walker

Similar to an Iterator, but null return values need special treatment.

Specified by:

next in interface Walker

Returns:

the next content to be processed, perhaps null if the next content is re-formatted text of some sort (Text / CDATA).

text

public java.lang.String text()

Description copied from interface: Walker

If the previous call to next() returned null, then this will return the required text to be processed. Check to see whether this text is CDATA by calling the isCDATA() method.

Specified by:

text in interface Walker

Returns:

The current text value (null if the previous invocation of next() returned a non-null value).

isCDATA

public boolean isCDATA()

Description copied from interface: Walker

If the previous next() method returned null, then this will indicate whether the current text() value is CDATA or regular Text.

Specified by:

isCDATA in interface Walker

Returns:

true if the current text() is valid, and is CDATA.

isAllWhitespace

public boolean isAllWhitespace()

Description copied from interface: Walker

If all the content is Text-like (Walker.isAllText() returns true), and additionally that any content is either Text or CDATA, and that the values of these Text/CDATA members are all XML Whitespace.

Specified by:

isAllWhitespace in interface Walker

Returns:

true