Class DOMNodeWrapper
- java.lang.Object
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- net.sf.saxon.tree.wrapper.AbstractNodeWrapper
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- net.sf.saxon.dom.DOMNodeWrapper
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- All Implemented Interfaces:
javax.xml.transform.Source
,javax.xml.transform.SourceLocator
,GroundedValue
,Item
,NodeInfo
,Sequence
,Location
,SteppingNode<DOMNodeWrapper>
,SiblingCountingNode
,VirtualNode
,org.xml.sax.Locator
public class DOMNodeWrapper extends AbstractNodeWrapper implements SiblingCountingNode, SteppingNode<DOMNodeWrapper>
A node in the XML parse tree representing an XML element, character content, or attribute. This is the implementation of the NodeInfo interface used as a wrapper for DOM nodes.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 object.
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Field Summary
Fields Modifier and Type Field Description protected DocumentWrapper
docWrapper
protected int
index
protected org.w3c.dom.Node
node
protected short
nodeKind
protected int
span
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Fields inherited from class net.sf.saxon.tree.wrapper.AbstractNodeWrapper
treeInfo
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Fields inherited from interface net.sf.saxon.om.NodeInfo
IS_DTD_TYPE, IS_NILLED
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Constructor Summary
Constructors Modifier Constructor Description protected
DOMNodeWrapper(org.w3c.dom.Node node, DocumentWrapper docWrapper, DOMNodeWrapper parent, int index)
This constructor is protected: nodes should be created using the makeWrapper factory method
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description int
compareOrder(NodeInfo other)
Determine the relative position of this node and another node, in document order.boolean
equals(java.lang.Object other)
Determine whether this is the same node as another node.static void
expandStringValue(org.w3c.dom.NodeList list, FastStringBuffer sb)
void
generateId(FastStringBuffer buffer)
Get a character string that uniquely identifies this node.NamespaceMap
getAllNamespaces()
Get all the namespace bindings that are in-scope for this element.java.lang.String
getAttributeValue(java.lang.String uri, java.lang.String local)
Get the string value of a given attribute of this nodeNamespaceBinding[]
getDeclaredNamespaces(NamespaceBinding[] buffer)
Get all namespace undeclarations and undeclarations defined on this element.java.lang.String
getDisplayName()
Get the display name of this node.DOMNodeWrapper
getFirstChild()
Get the first child of this nodestatic java.lang.String
getLocalName(org.w3c.dom.Node node)
Get the local name of a DOM element or attribute node.java.lang.String
getLocalPart()
Get the local part of the name of this node.DOMNodeWrapper
getNextSibling()
Get the next sibling of this nodeint
getNodeKind()
Return the kind of node.DOMNodeWrapper
getParent()
Get the NodeInfo object representing the parent of this nodejava.lang.String
getPrefix()
Get the prefix of the name of the node.DOMNodeWrapper
getPreviousSibling()
Get the previous sibling of this nodeNodeInfo
getRoot()
Get the root node - always a document node with this tree implementationint
getSiblingPosition()
Get the index position of this node among its siblings (starting from 0).java.lang.CharSequence
getStringValueCS()
Get the value of the item as a CharSequence.DOMNodeWrapper
getSuccessorElement(DOMNodeWrapper anchor, java.lang.String uri, java.lang.String local)
Find the next matching element in document order; that is, the first child element with the required name if there is one; otherwise the next sibling element if there is one; otherwise the next sibling element of the parent, grandparent, etc, up to the anchor element.DocumentWrapper
getTreeInfo()
Get information about the tree to which this NodeInfo belongsorg.w3c.dom.Node
getUnderlyingNode()
Get the underlying DOM node, to implement the VirtualNode interfacejava.lang.String
getURI()
Get the URI part of the name of this node.boolean
hasChildNodes()
Determine whether the node has any children.boolean
isId()
Determine whether this node has the is-id propertyprotected AxisIterator
iterateAttributes(java.util.function.Predicate<? super NodeInfo> nodeTest)
Return an iterator over the attributes of this element node.protected AxisIterator
iterateChildren(java.util.function.Predicate<? super NodeInfo> nodeTest)
Return an iterator over the children of this node.protected AxisIterator
iterateDescendants(java.util.function.Predicate<? super NodeInfo> nodeTest, boolean includeSelf)
Return an iterator over the descendants of this node.protected AxisIterator
iterateSiblings(java.util.function.Predicate<? super NodeInfo> nodeTest, boolean forwards)
Return an iterator over the siblings of this node.protected static DOMNodeWrapper
makeWrapper(org.w3c.dom.Node node, DocumentWrapper docWrapper)
Factory method to wrap a DOM node with a wrapper that implements the Saxon NodeInfo interface.protected static DOMNodeWrapper
makeWrapper(org.w3c.dom.Node node, DocumentWrapper docWrapper, DOMNodeWrapper parent, int index)
Factory method to wrap a DOM node with a wrapper that implements the Saxon NodeInfo interface.-
Methods inherited from class net.sf.saxon.tree.wrapper.AbstractNodeWrapper
atomize, getBaseURI, getColumnNumber, getFingerprint, getLineNumber, getNamePool, getRealNode, getStringValue, getSystemId, hasFingerprint, hashCode, iterateAxis, iterateAxis, saveLocation, setSystemId
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Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface net.sf.saxon.om.GroundedValue
asIterable, concatenate, containsNode, effectiveBooleanValue, materialize
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Methods inherited from interface net.sf.saxon.om.Item
getLength, head, itemAt, iterate, reduce, subsequence
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Methods inherited from interface net.sf.saxon.s9api.Location
saveLocation
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Methods inherited from interface net.sf.saxon.om.NodeInfo
atomize, attributes, children, children, copy, getBaseURI, getColumnNumber, getConfiguration, getFingerprint, getGenre, getLineNumber, getPublicId, getSchemaType, getStringValue, getSystemId, hasFingerprint, hashCode, isIdref, isNilled, isSameNodeInfo, isStreamed, iterateAxis, iterateAxis, toShortString
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Methods inherited from interface net.sf.saxon.om.Sequence
makeRepeatable
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Field Detail
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node
protected org.w3c.dom.Node node
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nodeKind
protected short nodeKind
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docWrapper
protected DocumentWrapper docWrapper
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index
protected int index
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span
protected int span
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Constructor Detail
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DOMNodeWrapper
protected DOMNodeWrapper(org.w3c.dom.Node node, DocumentWrapper docWrapper, DOMNodeWrapper parent, int index)
This constructor is protected: nodes should be created using the makeWrapper factory method- Parameters:
node
- The DOM node to be wrappeddocWrapper
- The wrapper for the Document node at the root of the DOM tree. Never null except in the case where we are creating the DocumentWrapper itself (which is a subclass).parent
- The DOMNodeWrapper that wraps the parent of this node. May be null if unknown.index
- Position of this node among its siblings, 0-based. May be -1 if unknown.
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Method Detail
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makeWrapper
protected static DOMNodeWrapper makeWrapper(org.w3c.dom.Node node, DocumentWrapper docWrapper)
Factory method to wrap a DOM node with a wrapper that implements the Saxon NodeInfo interface.- Parameters:
node
- The DOM nodedocWrapper
- The wrapper for the containing Document node- Returns:
- The new wrapper for the supplied node
- Throws:
java.lang.NullPointerException
- if the node or the document wrapper are null
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makeWrapper
protected static DOMNodeWrapper makeWrapper(org.w3c.dom.Node node, DocumentWrapper docWrapper, DOMNodeWrapper parent, int index)
Factory method to wrap a DOM node with a wrapper that implements the Saxon NodeInfo interface.- Parameters:
node
- The DOM nodedocWrapper
- The wrapper for the containing Document node *parent
- The wrapper for the parent of the JDOM nodeindex
- The position of this node relative to its siblings- Returns:
- The new wrapper for the supplied node
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getTreeInfo
public DocumentWrapper getTreeInfo()
Description copied from interface:NodeInfo
Get information about the tree to which this NodeInfo belongs- Specified by:
getTreeInfo
in interfaceNodeInfo
- Overrides:
getTreeInfo
in classAbstractNodeWrapper
- Returns:
- the TreeInfo
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getUnderlyingNode
public org.w3c.dom.Node getUnderlyingNode()
Get the underlying DOM node, to implement the VirtualNode interface- Specified by:
getUnderlyingNode
in interfaceVirtualNode
- Returns:
- The underlying node.
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getNodeKind
public int getNodeKind()
Return the kind of node.- Specified by:
getNodeKind
in interfaceNodeInfo
- Returns:
- one of the values Node.ELEMENT, Node.TEXT, Node.ATTRIBUTE, etc.
- See Also:
Type
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equals
public boolean equals(java.lang.Object other)
Determine whether this is the same node as another node.Note: a.equals(b) if and only if generateId(a)==generateId(b)
- Specified by:
equals
in interfaceNodeInfo
- Overrides:
equals
in classAbstractNodeWrapper
- Parameters:
other
- the node to be compared with this node- Returns:
- true if this Node object and the supplied Node object represent the same node in the tree.
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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 interfaceNodeInfo
- 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())
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getStringValueCS
public java.lang.CharSequence getStringValueCS()
Get the value of the item as a CharSequence. This is in some cases more efficient than the version of the method that returns a String.- Specified by:
getStringValueCS
in interfaceGroundedValue
- Specified by:
getStringValueCS
in interfaceItem
- Returns:
- the string value of the item
- See Also:
Item.getStringValue()
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expandStringValue
public static void expandStringValue(org.w3c.dom.NodeList list, FastStringBuffer sb)
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getLocalPart
public java.lang.String getLocalPart()
Get the local part of the name of this node. This is the name after the ":" if any.- Specified by:
getLocalPart
in interfaceNodeInfo
- Returns:
- the local part of the name. For an unnamed node, returns "".
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getLocalName
public static java.lang.String getLocalName(org.w3c.dom.Node node)
Get the local name of a DOM element or attribute node.- Parameters:
node
- the DOM element or attribute node- Returns:
- the local name as defined in XDM
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getURI
public java.lang.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.
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getPrefix
public java.lang.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.
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getDisplayName
public java.lang.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 interfaceNodeInfo
- Overrides:
getDisplayName
in classAbstractNodeWrapper
- Returns:
- The display name of this node. For a node with no name, return an empty string.
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getParent
public DOMNodeWrapper getParent()
Get the NodeInfo object representing the parent of this node- Specified by:
getParent
in interfaceNodeInfo
- Specified by:
getParent
in interfaceSteppingNode<DOMNodeWrapper>
- Returns:
- the parent of this node; null if this node has no parent
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getSiblingPosition
public int getSiblingPosition()
Get the index position of this node among its siblings (starting from 0). In the case of a text node that maps to several adjacent siblings in the DOM, the numbering actually refers to the position of the underlying DOM nodes; thus the sibling position for the text node is that of the first DOM node to which it relates, and the numbering of subsequent XPath nodes is not necessarily consecutive.Despite the name, this method also returns a meaningful result for attribute nodes; it returns the position of the attribute among the attributes of its parent element, when they are listed in document order.
- Specified by:
getSiblingPosition
in interfaceSiblingCountingNode
- Returns:
- 0 for the first child, 1 for the second child, etc.
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iterateAttributes
protected AxisIterator iterateAttributes(java.util.function.Predicate<? super NodeInfo> 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 classAbstractNodeWrapper
- 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.
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iterateChildren
protected AxisIterator iterateChildren(java.util.function.Predicate<? super NodeInfo> nodeTest)
Description copied from class:AbstractNodeWrapper
Return an iterator over the children of this node. This method is only called after checking that the node is an element or document.- Specified by:
iterateChildren
in classAbstractNodeWrapper
- Parameters:
nodeTest
- a test that the returned attributes must satisfy- Returns:
- an iterator over the child nodes, in document order.
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iterateSiblings
protected AxisIterator iterateSiblings(java.util.function.Predicate<? super NodeInfo> 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 classAbstractNodeWrapper
- Parameters:
nodeTest
- a test that the returned siblings must satisfyforwards
- true for following siblings, false for preceding siblings- Returns:
- an iterator over the sibling nodes, in axis order.
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iterateDescendants
protected AxisIterator iterateDescendants(java.util.function.Predicate<? super NodeInfo> nodeTest, boolean includeSelf)
Description copied from class:AbstractNodeWrapper
Return an iterator over the descendants of this node. This method is only called after checking that the node is an element or document node.- Overrides:
iterateDescendants
in classAbstractNodeWrapper
- Parameters:
nodeTest
- a test that the returned descendants must satisfyincludeSelf
- true if this node is to be included in the result- Returns:
- an iterator over the sibling nodes, in axis order.
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getAttributeValue
public java.lang.String getAttributeValue(java.lang.String uri, java.lang.String local)
Get the string value of a given attribute of this node- Specified by:
getAttributeValue
in interfaceNodeInfo
- Overrides:
getAttributeValue
in classAbstractNodeWrapper
- Parameters:
uri
- the namespace URI of the attribute name. Supply the empty string for an attribute that is in no namespacelocal
- the local part of the attribute name.- Returns:
- the attribute value if it exists, or null if it does not exist. Always returns null if this node is not an element.
- Since:
- 9.4
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getRoot
public NodeInfo getRoot()
Get the root node - always a document node with this tree implementation- Specified by:
getRoot
in interfaceNodeInfo
- Overrides:
getRoot
in classAbstractNodeWrapper
- Returns:
- the NodeInfo representing the containing document
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hasChildNodes
public boolean hasChildNodes()
Determine whether the node has any children.Note: the result is equivalent to
getEnumeration(Axis.CHILD, AnyNodeTest.getInstance()).hasNext()
- Specified by:
hasChildNodes
in interfaceNodeInfo
- Overrides:
hasChildNodes
in classAbstractNodeWrapper
- Returns:
- True if the node has one or more children
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generateId
public void generateId(FastStringBuffer buffer)
Get a character string that uniquely identifies this node. Note: a.isSameNode(b) if and only if generateId(a)==generateId(b)- Specified by:
generateId
in interfaceNodeInfo
- Parameters:
buffer
- a buffer to contain a string that uniquely identifies this node, across all documents
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getDeclaredNamespaces
public NamespaceBinding[] getDeclaredNamespaces(NamespaceBinding[] buffer)
Get all namespace undeclarations and undeclarations defined on this element.- Specified by:
getDeclaredNamespaces
in interfaceNodeInfo
- Overrides:
getDeclaredNamespaces
in classAbstractNodeWrapper
- Parameters:
buffer
- If this is non-null, and the result array fits in this buffer, then the result may overwrite the contents of this array, to avoid the cost of allocating a new array on the heap.- Returns:
- An array of integers representing the namespace declarations and undeclarations present on
this element. For a node other than an element, return null. Otherwise, the returned array is a
sequence of namespace codes, whose meaning may be interpreted by reference to the name pool. The
top half word of each namespace code represents the prefix, the bottom half represents the URI.
If the bottom half is zero, then this is a namespace undeclaration rather than a declaration.
The XML namespace is never included in the list. If the supplied array is larger than required,
then the first unused entry will be set to -1.
For a node other than an element, the method returns null.
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getAllNamespaces
public NamespaceMap getAllNamespaces()
Get all the namespace bindings that are in-scope for this element.For an element return all the prefix-to-uri bindings that are in scope. This may include a binding to the default namespace (represented by a prefix of ""). It will never include "undeclarations" - that is, the namespace URI will never be empty; the effect of an undeclaration is to remove a binding from the in-scope namespaces, not to add anything.
For a node other than an element, returns null.
- Specified by:
getAllNamespaces
in interfaceNodeInfo
- Overrides:
getAllNamespaces
in classAbstractNodeWrapper
- Returns:
- the in-scope namespaces for an element, or null for any other kind of node.
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isId
public boolean isId()
Determine whether this node has the is-id property
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getNextSibling
public DOMNodeWrapper getNextSibling()
Description copied from interface:SteppingNode
Get the next sibling of this node- Specified by:
getNextSibling
in interfaceSteppingNode<DOMNodeWrapper>
- Returns:
- the next sibling if there is one, or null otherwise
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getFirstChild
public DOMNodeWrapper getFirstChild()
Description copied from interface:SteppingNode
Get the first child of this node- Specified by:
getFirstChild
in interfaceSteppingNode<DOMNodeWrapper>
- Returns:
- the first child if there is one, or null otherwise
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getPreviousSibling
public DOMNodeWrapper getPreviousSibling()
Description copied from interface:SteppingNode
Get the previous sibling of this node- Specified by:
getPreviousSibling
in interfaceSteppingNode<DOMNodeWrapper>
- Returns:
- the previous sibling if there is one, or null otherwise
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getSuccessorElement
public DOMNodeWrapper getSuccessorElement(DOMNodeWrapper anchor, java.lang.String uri, java.lang.String local)
Description copied from interface:SteppingNode
Find the next matching element in document order; that is, the first child element with the required name if there is one; otherwise the next sibling element if there is one; otherwise the next sibling element of the parent, grandparent, etc, up to the anchor element.- Specified by:
getSuccessorElement
in interfaceSteppingNode<DOMNodeWrapper>
- Parameters:
anchor
- the root of the tree within which navigation is confineduri
- the required namespace URI, or null if any namespace is acceptablelocal
- the required local name, or null if any local name is acceptable- Returns:
- the next element after this one in document order, with the given URI and local name if specified, or null if this is the last node in the document, or the last node within the subtree being navigated
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