net.sf.saxon.om
Interface MutableNodeInfo

All Superinterfaces:

Item, NodeInfo, PullEvent, Source, ValueRepresentation

All Known Implementing Classes:

AbsentExtensionElement, AnnotationParent, DataElement, DocumentImpl, ElementImpl, ExtensionInstruction, LiteralResultElement, NodeImpl, Orphan, SaxonAssign, SaxonBreak, SaxonCallTemplate, SaxonCatch, SaxonCollation, SaxonContinue, SaxonDoctype, SaxonEntityRef, SaxonFinally, SaxonImportQuery, SaxonIterate, SaxonMode, SaxonPreprocess, SaxonTry, SaxonWhile, SchemaElement, SQLClose, SQLColumn, SQLConnect, SQLDelete, SQLInsert, SQLQuery, SQLUpdate, StyleElement, UnknownElement, XSDAlternative, XSDAnnotation, XSDAny, XSDAnyAttribute, XSDAssert, XSDAttribute, XSDAttributeGroup, XSDComplexContent, XSDComplexContentRestriction, XSDComplexType, XSDCompositor, XSDDefaultOpenContent, XSDDocumentation, XSDElement, XSDExtension, XSDFacet, XSDFieldOrSelector, XSDGroup, XSDIdentityConstraint, XSDImport, XSDInclude, XSDList, XSDNotation, XSDOpenContent, XSDOverride, XSDRedefine, XSDSchema, XSDSimpleContent, XSDSimpleContentRestriction, XSDSimpleType, XSDSimpleTypeRestriction, XSDUnion, XSLAnalyzeString, XSLApplyImports, XSLApplyTemplates, XSLAttribute, XSLAttributeSet, XSLCallTemplate, XSLCharacterMap, XSLChoose, XSLComment, XSLCopy, XSLCopyOf, XSLDecimalFormat, XSLDocument, XSLElement, XSLFallback, XSLForEach, XSLForEachGroup, XSLFunction, XSLGeneralIncorporate, XSLGeneralVariable, XSLIf, XSLImport, XSLImportSchema, XSLInclude, XSLKey, XSLMatchingSubstring, XSLMessage, XSLNamespace, XSLNamespaceAlias, XSLNextMatch, XSLNumber, XSLOtherwise, XSLOutput, XSLOutputCharacter, XSLParam, XSLPerformSort, XSLPreserveSpace, XSLProcessingInstruction, XSLResultDocument, XSLSequence, XSLSort, XSLStringConstructor, XSLStylesheet, XSLTemplate, XSLText, XSLValueOf, XSLVariable, XSLVariableDeclaration, XSLWhen, XSLWithParam

public interface MutableNodeInfo
extends NodeInfo

An extension of the NodeInfo interface defining a node that can be updated. The updating methods are closely modelled on the updating primitives defined in the XQuery Update specification, however, their semantics should not be assumed to be identical to those primitives.

These primitives may leave the tree in a state where the type annotations of nodes do not correctly describe the structure of the nodes. It is the caller's responsibility to maintain the integrity of type annotations.

This interface was introduced in Saxon 9.1 and modified in Saxon 9.2. It is not yet considered 100% stable. Some aspects of the semantics are not clearly defined, for example the effect of each operations on namespace bindings, and such details may change in the future. The primary purpose of this interface is as an internal interface for use by XQuery Update; applications use it (or implement it) at their own risk.

Field Summary

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

ALL_NAMESPACES, EMPTY_NAMESPACE_LIST, IS_DTD_TYPE, IS_NILLED, LOCAL_NAMESPACES, NO_NAMESPACES

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

EMPTY_VALUE_ARRAY

Method Summary

void	addAttribute(int nameCode, int typeCode, CharSequence value, int properties) Add an attribute to this element node.
void	addNamespace(int nscode, boolean inherit) Add a namespace binding (that is, a namespace node) to this element.
void	delete() Delete this node (that is, detach it from its parent).
void	insertChildren(NodeInfo[] source, boolean atStart, boolean inherit) Insert copies of a sequence of nodes as children of this node.
void	insertSiblings(NodeInfo[] source, boolean before, boolean inherit) Insert copies of a sequence of nodes as siblings of this node.
boolean	isDeleted() Test whether this MutableNodeInfo object represents a node that has been deleted.
Builder	newBuilder() Get a Builder suitable for building nodes that can be attached to this document.
void	removeAttribute(NodeInfo attribute) Remove an attribute from this element node
void	removeTypeAnnotation() Remove type information from this node (and its ancestors, recursively).
void	rename(int newNameCode) Rename this node.
void	replace(NodeInfo[] replacement, boolean inherit) Replace this node with a given sequence of nodes.
void	replaceStringValue(CharSequence stringValue) Replace the string-value of this node.
void	setTypeAnnotation(int typeCode) Set the type annotation on a node.

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

atomize, compareOrder, copy, equals, generateId, getAttributeValue, getBaseURI, getColumnNumber, getConfiguration, getDeclaredNamespaces, getDisplayName, getDocumentNumber, getDocumentRoot, getFingerprint, getLineNumber, getLocalPart, getNameCode, getNamePool, getNodeKind, getParent, getPrefix, getRoot, getStringValue, getSystemId, getTypeAnnotation, getURI, hasChildNodes, hashCode, isId, isIdref, isNilled, isSameNodeInfo, iterateAxis, iterateAxis

Methods inherited from interface javax.xml.transform.Source

setSystemId

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

getStringValueCS, getTypedValue

Method Detail

setTypeAnnotation

void setTypeAnnotation(int typeCode)

Set the type annotation on a node. This must only be called when the caller has verified (by validation) that the node is a valid instance of the specified type. The call is ignored if the node is not an element or attribute node.

Parameters:

typeCode - the type annotation (possibly including high bits set to indicate the isID, isIDREF, and isNilled properties)

insertChildren

void insertChildren(NodeInfo[] source,
                    boolean atStart,
                    boolean inherit)

Insert copies of a sequence of nodes as children of this node.

This method takes no action unless the target node is a document node or element node. It also takes no action in respect of any supplied nodes that are not elements, text nodes, comments, or processing instructions.

The supplied nodes will be copied to form the new children. Adjacent text nodes will be merged, and zero-length text nodes removed.

Parameters:

source - the nodes to be inserted. These objects are unchanged; the nodes inserted into the tree will be copies.

atStart - true if the new nodes are to be inserted before existing children; false if they are to be inserted after existing children

inherit - true if the inserted nodes are to inherit the namespaces of their new parent; false if such namespaces are to be undeclared

insertSiblings

void insertSiblings(NodeInfo[] source,
                    boolean before,
                    boolean inherit)

Insert copies of a sequence of nodes as siblings of this node.

This method takes no action unless the target node is an element, text node, comment, or processing instruction, and one that has a parent node. It also takes no action in respect of any supplied nodes that are not elements, text nodes, comments, or processing instructions.

The supplied nodes must use the same data model implementation as the tree into which they will be inserted.

Parameters:

source - the nodes to be inserted. These objects are unchanged; the nodes inserted into the tree will be copies.

before - true if the new nodes are to be inserted before the target node; false if they are to be inserted after the target node

inherit - true if the inserted nodes are to inherit the namespaces of their new parent; false if such namespaces are to be undeclared

removeAttribute

void removeAttribute(NodeInfo attribute)

Remove an attribute from this element node

If the target node is not an element, or if the supplied node is not an attribute of this element, this method takes no action.

The attribute object itself becomes unusable; any attempt to use this attribute object, or any other object representing the same node, is likely to result in an exception. Calling the isDeleted() method on the attribute object will return true.

Parameters:

attribute - the attribute node to be removed

addAttribute

void addAttribute(int nameCode,
                  int typeCode,
                  CharSequence value,
                  int properties)

Add an attribute to this element node.

If this node is not an element, the method takes no action. If the element already has an attribute with this name, the method throws an exception.

This method does not perform any namespace fixup. It is the caller's responsibility to ensure that any namespace prefix used in the name of the attribute (or in its value if it has a namespace-sensitive type) is declared on this element.

Parameters:

nameCode - the name of the new attribute

typeCode - the type annotation of the new attribute

value - the string value of the new attribute

properties - properties including IS_ID and IS_IDREF properties

Throws:

IllegalStateException - if the element already has an attribute with the given name.

delete

void delete()

Delete this node (that is, detach it from its parent).

Following this call, calling isDeleted() on the target node or on any of its descendants (or their attributes) will return true, and the node will in all other respects be unusable. The effect of other operations on the node is undefined.

If the deleted node has preceding and following siblings that are both text nodes, the two text nodes will be joined into a single text node (the identity of this node with respect to the original text nodes is undefined).

isDeleted

boolean isDeleted()

Test whether this MutableNodeInfo object represents a node that has been deleted. Generally, such a node is unusable, and any attempt to use it will result in an exception being thrown.

Returns:

true if this node has been deleted

replace

void replace(NodeInfo[] replacement,
             boolean inherit)

Replace this node with a given sequence of nodes. This node is effectively deleted, and the replacement nodes are attached to the parent of this node in its place.

Parameters:

replacement - the replacement nodes. If this node is an attribute, the replacements must also be attributes; if this node is not an attribute, the replacements must not be attributes.

inherit - true if the replacement nodes are to inherit the namespaces of their new parent; false if such namespaces are to be undeclared

Throws:

IllegalArgumentException - if any of the replacement nodes is of the wrong kind. When replacing a child node, the replacement nodes must all be elements, text, comment, or PI nodes; when replacing an attribute, the replacement nodes must all be attributes.

IllegalStateException - if this node is deleted or if it has no parent node.

IllegalStateException - if two replacement attributes have the same name.

replaceStringValue

void replaceStringValue(CharSequence stringValue)

Replace the string-value of this node. If applied to an element or document node, this causes all existing children to be deleted, and replaced with a new text node whose string value is the value supplied. The caller is responsible for checking that the value is valid, for example that comments do not contain a double hyphen; the implementation is not required to check for such conditions.

Parameters:

stringValue - the new string value

rename

void rename(int newNameCode)

Rename this node.

This call has no effect if applied to a nameless node, such as a text node or comment.

If necessary, a new namespace binding will be added to the target element, or to the element parent of the target attribute

Parameters:

newNameCode - the namecode of the new name in the name pool

Throws:

IllegalArgumentException - if the new name code is not present in the name pool, or if it has a (prefix, uri) pair in which the prefix is the same as that of an existing in-scope namespace binding and the uri is different from that namespace binding.

addNamespace

void addNamespace(int nscode,
                  boolean inherit)

Add a namespace binding (that is, a namespace node) to this element. This call has no effect if applied to a node other than an element.

Parameters:

nscode - The namespace code representing the (prefix, uri) pair of the namespace binding to be added. If the target element already has a namespace binding with this (prefix, uri) pair, the call has no effect. If the target element currently has a namespace binding with this prefix and a different URI, an exception is raised.

inherit - If true, the new namespace binding will be inherited by any children of the target element that do not already have a namespace binding for the specified prefix, recursively. If false, the new namespace binding will not be inherited.

Throws:

IllegalArgumentException - if the namespace code is not present in the namepool, or if the target element already has a namespace binding for this prefix

removeTypeAnnotation

void removeTypeAnnotation()

Remove type information from this node (and its ancestors, recursively). This method implements the upd:removeType() primitive defined in the XQuery Update specification. (Note: the caller is responsible for updating the set of nodes marked for revalidation)

newBuilder

Builder newBuilder()

Get a Builder suitable for building nodes that can be attached to this document.

Returns:

a new Builder that constructs nodes using the same object model implementation as this one, suitable for attachment to this tree