net.sf.saxon.option.dom4j

Class DOM4JDocumentWrapper

java.lang.Object

net.sf.saxon.om.GenericTreeInfo

net.sf.saxon.option.dom4j.DOM4JDocumentWrapper

All Implemented Interfaces:

javax.xml.transform.Source, ActiveSource, TreeInfo

public class DOM4JDocumentWrapper
extends GenericTreeInfo
implements ActiveSource

TreeInfo class for a virtual tree that wraps a DOM4J tree

Field Summary

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

root

Constructor Summary

Constructors

Constructor and Description
DOM4JDocumentWrapper(org.dom4j.Document doc, java.lang.String baseURI, Configuration config) Create a Saxon wrapper for a dom4j document

Method Summary

Modifier and Type	Method and Description
void	deliver(Receiver receiver, ParseOptions options) Implement ActiveSource by delivering the document to a supplied receiver
static org.dom4j.Branch	searchForParent(org.dom4j.Branch subtree, org.dom4j.Node node) DOM4J does not guarantee to provide the parent of a node, but XDM requires this.
NodeInfo	selectID(java.lang.String id, boolean getParent) Get the element with a given ID, if any
NodeInfo	wrap(org.dom4j.Node node) Wrap a node in the dom4j document.

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

getConfiguration, getDocumentNumber, getPublicId, getRootNode, getSpaceStrippingRule, getSystemId, getUnparsedEntity, getUnparsedEntityNames, getUserData, isStreamed, setConfiguration, setDocumentNumber, setRootNode, setSpaceStrippingRule, setSystemId, setUserData

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.xml.transform.Source

getSystemId, setSystemId

Methods inherited from interface net.sf.saxon.om.TreeInfo

isMutable, isTyped

Constructor Detail

DOM4JDocumentWrapper

public DOM4JDocumentWrapper(org.dom4j.Document doc,
                            java.lang.String baseURI,
                            Configuration config)

Create a Saxon wrapper for a dom4j document

Parameters:

doc - The dom4j document

baseURI - The base URI for all the nodes in the document

config - The Saxon configuration

Method Detail

deliver

public void deliver(Receiver receiver,
                    ParseOptions options)
             throws XPathException

Implement ActiveSource by delivering the document to a supplied receiver

Specified by:

deliver in interface ActiveSource

Parameters:

receiver - the receiver to which events representing the parsed XML document will be sent

options - options for parsing the source

Throws:

XPathException - if things don't work out

wrap

public NodeInfo wrap(org.dom4j.Node node)

Wrap a node in the dom4j document.

Parameters:

node - The node to be wrapped. This must be a node in the same document (the system does not check for this).

Returns:

the wrapping NodeInfo object

selectID

public NodeInfo selectID(java.lang.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 ID type is required

Returns:

null: dom4j does not provide any information about attribute types.

searchForParent

public static org.dom4j.Branch searchForParent(org.dom4j.Branch subtree,
                                               org.dom4j.Node node)

DOM4J does not guarantee to provide the parent of a node, but XDM requires this. In extremis, if we need the parent of a node and it is not known, we search the document looking for it. This is (fortunately!) very rarely necessary. One situation where we know it is needed is to find the parent of a processing instruction whose parent is in fact the document node.

Parameters:

subtree - the root of a subtree to be searched

node - a node to be sought within this subtree

Returns:

the parent of the sought node if it is found; otherwise null