net.sf.saxon.option.axiom

Class AxiomDocumentWrapper

java.lang.Object

net.sf.saxon.tree.wrapper.AbstractNodeWrapper

net.sf.saxon.option.axiom.AxiomParentNodeWrapper

net.sf.saxon.option.axiom.AxiomDocumentWrapper

All Implemented Interfaces:

Source, PullEvent, DocumentInfo, Item, NodeInfo, Sequence, SiblingCountingNode, VirtualNode

public class AxiomDocumentWrapper
extends AxiomParentNodeWrapper
implements DocumentInfo

The root node of an XPath tree. (Or equivalently, the tree itself).

This class is used not only for a document, but also for the root of a document-less tree fragment.

Author:

Michael H. Kay

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	AxiomDocumentWrapper.FollowingSiblingIterator
protected static class	AxiomDocumentWrapper.PrecedingSiblingIterator

Nested classes/interfaces inherited from class net.sf.saxon.option.axiom.AxiomParentNodeWrapper

AxiomParentNodeWrapper.ChildWrappingIterator, AxiomParentNodeWrapper.DescendantWrappingIterator

Field Summary

Fields

Modifier and Type	Field and Description
protected String	baseURI
protected Configuration	config
protected long	documentNumber

Fields inherited from class net.sf.saxon.option.axiom.AxiomParentNodeWrapper

node

Fields inherited from interface net.sf.saxon.om.NodeInfo

ALL_NAMESPACES, IS_DTD_TYPE, IS_NILLED, LOCAL_NAMESPACES, NO_NAMESPACES

Constructor Summary

Constructors

Constructor and Description
AxiomDocumentWrapper(org.apache.axiom.om.OMDocument root, String baseURI, Configuration config) Create a Saxon wrapper for an Axiom document node

Method Summary

Methods

Modifier and Type	Method and Description
int	compareOrder(NodeInfo other) Determine the relative position of this node and another node, in document order.
String	getBaseURI() Get the Base URI for the node, that is, the URI used for resolving a relative URI contained in the node.
Configuration	getConfiguration() Get the configuration previously set using setConfiguration
String	getDisplayName() Get the display name of this node.
long	getDocumentNumber() Get the unique document number for this document (the number is unique for all documents within a NamePool)
DocumentInfo	getDocumentRoot() Get the root node, if it is a document node.
int	getFingerprint() Get fingerprint.
String	getLocalPart() Get the local part of the name of this node.
int	getNameCode() Get name code.
NamePool	getNamePool() Get the name pool used for the names in this document
int	getNodeKind() Get the kind of node.
NodeInfo	getParent() Get the NodeInfo object representing the parent of this node
String	getPrefix() Get the prefix of the name of the node.
NodeInfo	getRoot() Get the root node of the tree containing this node
int	getSiblingPosition() Get the index position of this node among its siblings (starting from 0)
String	getSystemId() Get the System ID for the node.
int	getTypeAnnotation() Get the type annotation of this node, if any.
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
String	getURI() Get the URI part of the name of this node.
Object	getUserData(String key) Get user data held in the document node.
boolean	isSameNodeInfo(NodeInfo other) Determine whether this is the same node as another node.
boolean	isTyped() Ask whether the document contains any nodes whose type annotation is anything other than UNTYPED
protected AxisIterator<NodeInfo>	iterateAttributes(NodeTest nodeTest) Return an iterator over the attributes of this element node.
protected AxisIterator<NodeInfo>	iterateSiblings(NodeTest nodeTest, boolean forwards) Return an iterator over the siblings of this node.
protected static NodeInfo	makeWrapper(org.apache.axiom.om.OMNode node, AxiomDocumentWrapper docWrapper, AxiomParentNodeWrapper parent, int index) Factory method to wrap an Axiom node with a wrapper that implements the Saxon NodeInfo interface.
NodeInfo	selectID(String id, boolean getParent) Get the element with a given ID, if any
void	setConfiguration(Configuration config) Set the configuration, which defines the name pool used for all names in this document.
void	setSystemId(String systemId) Set the system identifier for this Source.
void	setUserData(String key, Object value) Set user data on the document node.
NodeInfo	wrap(org.apache.axiom.om.OMNode node) Wrap a node in the Axiom document.
NodeInfo	wrap(org.apache.axiom.om.OMNode node, AxiomParentNodeWrapper parent, int index) Wrap a node whose parent and sibling position are known in the Axiom document.

Methods inherited from class net.sf.saxon.option.axiom.AxiomParentNodeWrapper

atomize, generateId, getStringValueCS, getUnderlyingNode, hasChildNodes, iterateChildren, iterateDescendants

Methods inherited from class net.sf.saxon.tree.wrapper.AbstractNodeWrapper

comparePosition, copy, equals, getAttributeValue, getColumnNumber, getDeclaredNamespaces, getLineNumber, getRealNode, getSchemaType, getStringValue, hashCode, head, isId, isIdref, isNilled, iterate, iterateAxis, iterateAxis

Methods inherited from class java.lang.Object

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

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

atomize, comparePosition, copy, equals, generateId, getAttributeValue, getColumnNumber, getDeclaredNamespaces, getLineNumber, getSchemaType, getStringValue, hasChildNodes, hashCode, isId, isIdref, isNilled, iterateAxis, iterateAxis

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

getStringValueCS

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

head, iterate

Field Detail

config

protected Configuration config

baseURI

protected String baseURI

documentNumber

protected long documentNumber

Constructor Detail

AxiomDocumentWrapper

public AxiomDocumentWrapper(org.apache.axiom.om.OMDocument root,
                    String baseURI,
                    Configuration config)

Create a Saxon wrapper for an Axiom document node

Parameters:

root - The Axiom root node

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

config - The configuration which defines the name pool used for all names in this tree

Method Detail

wrap

public NodeInfo wrap(org.apache.axiom.om.OMNode node)

Wrap a node in the Axiom 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

wrap

public NodeInfo wrap(org.apache.axiom.om.OMNode node,
            AxiomParentNodeWrapper parent,
            int index)

Wrap a node whose parent and sibling position are known in the Axiom document.

Parameters:

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

parent - the (wrapper of the) parent node; null if unknown

index - the position of this node among its siblings; -1 if unknown

Returns:

the wrapping NodeInfo object

makeWrapper

protected static NodeInfo makeWrapper(org.apache.axiom.om.OMNode node,
                   AxiomDocumentWrapper docWrapper,
                   AxiomParentNodeWrapper parent,
                   int index)

Factory method to wrap an Axiom node with a wrapper that implements the Saxon NodeInfo interface.

Parameters:

node - The Axiom node (an element, text, processing-instruction, or comment node)

docWrapper - The wrapper for the Document containing this node

parent - The wrapper for the parent of the Axiom node. May be null if not known.

index - The position of this node relative to its siblings. May be -1 if not known

Returns:

The new wrapper for the supplied node

setConfiguration

public void setConfiguration(Configuration config)

Set the configuration, which defines the name pool used for all names in this document. This is always called after a new document has been created. The implementation must register the name pool with the document, so that it can be retrieved using getNamePool(). It must also call NamePool.allocateDocumentNumber(), and return the relevant document number when getDocumentNumber() is subsequently called.

Parameters:

config - The configuration to be used

getConfiguration

public Configuration getConfiguration()

Get the configuration previously set using setConfiguration

Specified by:

getConfiguration in interface NodeInfo

Overrides:

getConfiguration in class AbstractNodeWrapper

Returns:

the Configuration

getNamePool

public NamePool getNamePool()

Get the name pool used for the names in this document

Specified by:

getNamePool in interface NodeInfo

Overrides:

getNamePool in class AbstractNodeWrapper

Returns:

the name pool in which all the names used in this document are registered

isTyped

public boolean isTyped()

Ask whether the document contains any nodes whose type annotation is anything other than UNTYPED

Specified by:

isTyped in interface DocumentInfo

Returns:

true if the document contains elements whose type is other than UNTYPED

getDocumentNumber

public long getDocumentNumber()

Get the unique document number for this document (the number is unique for all documents within a NamePool)

Specified by:

getDocumentNumber in interface NodeInfo

Overrides:

getDocumentNumber in class AbstractNodeWrapper

Returns:

the unique number identifying this document within the name pool

getSiblingPosition

public int getSiblingPosition()

Get the index position of this node among its siblings (starting from 0)

Specified by:

getSiblingPosition in interface SiblingCountingNode

Returns:

0 for the first child, 1 for the second child, etc.

getNameCode

public int getNameCode()

Get name code. The name code is a coded form of the node name: two nodes with the same name code have the same namespace URI, the same local name, and the same prefix. By masking the name code with &0xfffff, you get a fingerprint: two nodes with the same fingerprint have the same local name and namespace URI.

Specified by:

getNameCode in interface NodeInfo

Overrides:

getNameCode in class AbstractNodeWrapper

Returns:

an integer name code, which may be used to obtain the actual node name from the name pool. For unnamed nodes (text nodes, comments, document nodes, and namespace nodes for the default namespace), returns -1.

See Also:

allocate

getNodeKind

public int getNodeKind()

Get the kind of node. This will be a value such as Type.ELEMENT or Type.ATTRIBUTE. There are seven kinds of node: documents, elements, attributes, text, comments, processing-instructions, and namespaces.

Specified by:

getNodeKind in interface NodeInfo

Returns:

an integer identifying the kind of node. These integer values are the same as those used in the DOM

Since:

8.4

See Also:

Type

isSameNodeInfo

public boolean isSameNodeInfo(NodeInfo other)

Determine whether this is the same node as another node.

Note that two different NodeInfo instances can represent the same conceptual node. Therefore the "==" operator should not be used to test node identity. The equals() method should give the same result as isSameNodeInfo(), but since this rule was introduced late it might not apply to all implementations.

Note: a.isSameNodeInfo(b) if and only if generateId(a)==generateId(b).

This method has the same semantics as isSameNode() in DOM Level 3, but works on Saxon NodeInfo objects rather than DOM Node objects.

Specified by:

isSameNodeInfo in interface NodeInfo

Overrides:

isSameNodeInfo in class AbstractNodeWrapper

Parameters:

other - the node to be compared with this node

Returns:

true if this NodeInfo object and the supplied NodeInfo object represent the same node in the tree.

getBaseURI

public String getBaseURI()

Get the Base URI for the node, that is, the URI used for resolving a relative URI contained in the node.

Specified by:

getBaseURI in interface NodeInfo

Overrides:

getBaseURI in class AbstractNodeWrapper

Returns:

the base URI of the node, taking into account xml:base attributes if present

getSystemId

public String getSystemId()

Get the System ID for the node. Note this is not the same as the base URI: the base URI can be modified by xml:base, but the system ID cannot. The base URI is used primarily for resolving relative URIs within the content of the document. The system ID is used primarily in conjunction with a line number, for identifying the location of elements within the source XML, in particular when errors are found. For a document node, the System ID represents the value of the document-uri property as defined in the XDM data model.

Specified by:

getSystemId in interface Source

Specified by:

getSystemId in interface NodeInfo

Overrides:

getSystemId in class AbstractNodeWrapper

Returns:

the System Identifier of the entity in the source document containing the node, or null if not known or not applicable.

Since:

8.4

setSystemId

public void setSystemId(String systemId)

Set the system identifier for this Source.

The system identifier is optional if the source does not get its data from a URL, but it may still be useful to provide one. The application can use a system identifier, for example, to resolve relative URIs and to include in error messages and warnings.

Specified by:

setSystemId in interface Source

Overrides:

setSystemId in class AbstractNodeWrapper

Parameters:

systemId - The system identifier as a URL string.

getFingerprint

public int getFingerprint()

Get fingerprint. The fingerprint is a coded form of the expanded name of the node: two nodes with the same name code have the same namespace URI and the same local name. A fingerprint of -1 should be returned for a node with no name.

Specified by:

getFingerprint in interface NodeInfo

Overrides:

getFingerprint in class AbstractNodeWrapper

Returns:

an integer fingerprint; two nodes with the same fingerprint have the same expanded QName. For unnamed nodes (text nodes, comments, document nodes, and namespace nodes for the default namespace), returns -1.

getParent

public NodeInfo getParent()

Get the NodeInfo object representing the parent of this node

Specified by:

getParent in interface NodeInfo

Returns:

the parent of this node; null if this node has no parent

getLocalPart

public String getLocalPart()

Get the local part of the name of this node. This is the name after the ":" if any.

Specified by:

getLocalPart in interface NodeInfo

Returns:

the local part of the name. For an unnamed node, returns "".

getPrefix

public String getPrefix()

Get the prefix of the name of the node. This is defined only for elements and attributes. If the node has no prefix, or for other kinds of node, return a zero-length string.

Specified by:

getPrefix in interface NodeInfo

Returns:

The prefix of the name of the node.

getURI

public String getURI()

Get the URI part of the name of this node. This is the URI corresponding to the prefix, or the URI of the default namespace if appropriate.

Specified by:

getURI in interface NodeInfo

Returns:

The URI of the namespace of this node. For an unnamed node, or for a node with an empty prefix, return an empty string.

getDisplayName

public String getDisplayName()

Get the display name of this node. For elements and attributes this is [prefix:]localname. For unnamed nodes, it is an empty string.

Specified by:

getDisplayName in interface NodeInfo

Overrides:

getDisplayName in class AbstractNodeWrapper

Returns:

The display name of this node. For a node with no name, return an empty string.

getRoot

public NodeInfo getRoot()

Get the root node of the tree containing this node

Specified by:

getRoot in interface NodeInfo

Overrides:

getRoot in class AbstractNodeWrapper

Returns:

the NodeInfo representing the top-level ancestor of this node. This will not necessarily be a document node. If this node has no parent, then the method returns this node.

Since:

8.4

iterateAttributes

protected AxisIterator<NodeInfo> iterateAttributes(NodeTest nodeTest)

Description copied from class: AbstractNodeWrapper

Return an iterator over the attributes of this element node. This method is only called after checking that the node is an element.

Specified by:

iterateAttributes in class AbstractNodeWrapper

Parameters:

nodeTest - a test that the returned attributes must satisfy

Returns:

an iterator over the attribute nodes. The order of the result, although arbitrary, must be consistent with document order.

iterateSiblings

protected AxisIterator<NodeInfo> iterateSiblings(NodeTest nodeTest,
                                     boolean forwards)

Description copied from class: AbstractNodeWrapper

Return an iterator over the siblings of this node. This method is only called after checking that the node is an element, text, comment, or PI node.

Specified by:

iterateSiblings in class AbstractNodeWrapper

Parameters:

nodeTest - a test that the returned siblings must satisfy

forwards - true for following siblings, false for preceding siblings

Returns:

an iterator over the sibling nodes, in axis order.

getDocumentRoot

public DocumentInfo getDocumentRoot()

Get the root node, if it is a document node.

Specified by:

getDocumentRoot in interface NodeInfo

Returns:

the DocumentInfo representing the containing document. If this node is part of a tree that does not have a document node as its root, returns null.

Since:

8.4

selectID

public NodeInfo selectID(String id,
                boolean getParent)

Get the element with a given ID, if any

Specified by:

selectID in interface DocumentInfo

Parameters:

id - the required ID value

getParent - true if the parent of the selected node is required (for element-with-id)

Returns:

the element with the given ID, or null if there is no such ID present (or if the parser has not notified attributes as being of type ID).

getUnparsedEntityNames

public Iterator<String> getUnparsedEntityNames()

Get the list of unparsed entities defined in this document

Specified by:

getUnparsedEntityNames in interface DocumentInfo

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

getUnparsedEntity

public String[] getUnparsedEntity(String name)

Get the unparsed entity with a given name

Specified by:

getUnparsedEntity in interface DocumentInfo

Parameters:

name - the name of the entity

Returns:

null: Axiom does not provide access to unparsed entities

getTypeAnnotation

public int getTypeAnnotation()

Get the type annotation of this node, if any. Returns -1 for kinds of nodes that have no annotation, and for elements annotated as untyped, and attributes annotated as untypedAtomic.

Specified by:

getTypeAnnotation in interface NodeInfo

Overrides:

getTypeAnnotation in class AbstractNodeWrapper

Returns:

the type annotation of the node.

See Also:

Type

setUserData

public void setUserData(String key,
               Object value)

Set user data on the document node. The user data can be retrieved subsequently using getUserData(java.lang.String)

Specified by:

setUserData in interface DocumentInfo

Parameters:

key - A string giving the name of the property to be set. Clients are responsible for choosing a key that is likely to be unique. Must not be null. Keys used internally by Saxon are prefixed "saxon:".

value - The value to be set for the property. May be null, which effectively removes the existing value for the property.

getUserData

public Object getUserData(String key)

Get user data held in the document node. This retrieves properties previously set using setUserData(java.lang.String, java.lang.Object)

Specified by:

getUserData in interface DocumentInfo

Parameters:

key - A string giving the name of the property to be retrieved.

Returns:

the value of the property, or null if the property has not been defined.

compareOrder

public int compareOrder(NodeInfo other)

Determine the relative position of this node and another node, in document order. The other node will always be in the same document.

Specified by:

compareOrder in interface NodeInfo

Parameters:

other - The other node, whose position is to be compared with this node

Returns:

-1 if this node precedes the other node, +1 if it follows the other node, or 0 if they are the same node. (In this case, isSameNode() will always return true, and the two nodes will produce the same result for generateId())