net.sf.saxon.dom

Class DocumentWrapper

java.lang.Object

net.sf.saxon.om.GenericTreeInfo

net.sf.saxon.dom.DocumentWrapper

All Implemented Interfaces:

Source, TreeInfo

public class DocumentWrapper
extends GenericTreeInfo

The tree info object for a tree implemented as a wrapper around a DOM Document.

Because the DOM is not thread-safe even when reading, and because Saxon-EE can spawn multiple threads that access the same input tree, all methods that invoke DOM methods are synchronized on the Document node

Field Summary

Fields

Modifier and Type	Field and Description
Node	docNode
protected boolean	domLevel3

Constructor Summary

Constructors

Constructor and Description
DocumentWrapper(Node doc, String baseURI, Configuration config) Wrap a DOM Document or DocumentFragment node

Method Summary

Methods

Modifier and Type	Method and Description
int	getDOMLevel() Get the level of DOM interface to be used
String[]	getUnparsedEntity(String name) Get the unparsed entity with a given name
Iterator<String>	getUnparsedEntityNames() Get the list of unparsed entities defined in this document
NodeInfo	selectID(String id, boolean getParent) Get the element with a given ID, if any
void	setDOMLevel(int level) Set the level of DOM interface to be used
DOMNodeWrapper	wrap(Node node) Create a wrapper for a node in this document

Methods inherited from class net.sf.saxon.om.GenericTreeInfo

getConfiguration, getDocumentNumber, getPublicId, getRootNode, getSystemId, getUserData, isTyped, setConfiguration, setDocumentNumber, setRootNode, setSystemId, setUserData

Methods inherited from class java.lang.Object

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

Field Detail

domLevel3

protected boolean domLevel3

docNode

public Node docNode

Constructor Detail

DocumentWrapper

public DocumentWrapper(Node doc,
               String baseURI,
               Configuration config)

Wrap a DOM Document or DocumentFragment node

Parameters:

doc - a DOM Document or DocumentFragment node

baseURI - the base URI of the document

config - the Saxon configuration

Method Detail

wrap

public DOMNodeWrapper wrap(Node node)

Create a wrapper for a node in this document

Parameters:

node - the DOM node to be wrapped. This must be a node within the document wrapped by this DocumentWrapper

Returns:

the wrapped node

Throws:

IllegalArgumentException - if the node is not a descendant of the Document node wrapped by this DocumentWrapper

setDOMLevel

public void setDOMLevel(int level)

Set the level of DOM interface to be used

Parameters:

level - the DOM level. Must be 2 or 3. By default Saxon assumes that DOM level 3 is available; this parameter can be set to the value 2 to indicate that Saxon should not use methods unless they are available in DOM level 2. From Saxon 9.2, this switch remains available, but the use of DOM level 2 is untested and unsupported.

getDOMLevel

public int getDOMLevel()

Get the level of DOM interface to be used

Returns:

the DOM level. Always 2 or 3.

selectID

public NodeInfo selectID(String id,
                boolean getParent)

Get the element with a given ID, if any

Specified by:

selectID in interface TreeInfo

Overrides:

selectID in class GenericTreeInfo

Parameters:

id - the required ID value

getParent - true if the parent of the element having the given ID value is required

Returns:

a NodeInfo representing the element with the given ID, or null if there is no such element. This implementation does not necessarily conform to the rule that if an invalid document contains two elements with the same ID, the one that comes last should be returned.

getUnparsedEntityNames

public Iterator<String> getUnparsedEntityNames()

Get the list of unparsed entities defined in this document

Specified by:

getUnparsedEntityNames in interface TreeInfo

Overrides:

getUnparsedEntityNames in class GenericTreeInfo

Returns:

an Iterator, whose items are of type String, containing the names of all unparsed entities defined in this document. If there are no unparsed entities or if the information is not available then an empty iterator is returned

Since:

9.1 (implemented for this subclass since 9.2)

getUnparsedEntity

public String[] getUnparsedEntity(String name)

Get the unparsed entity with a given name

Specified by:

getUnparsedEntity in interface TreeInfo

Overrides:

getUnparsedEntity in class GenericTreeInfo

Parameters:

name - the name of the entity

Returns:

if the entity exists, return an array of two Strings, the first holding the system ID of the entity (as an absolute URI if possible), the second holding the public ID if there is one, or null if not. If the entity does not exist, the method returns null. Applications should be written on the assumption that this array may be extended in the future to provide additional information.

Since:

8.4 (implemented for this subclass since 9.2)