Package net.sf.saxon.tree.tiny

Class TinyNodeImpl

java.lang.Object
net.sf.saxon.tree.tiny.TinyNodeImpl
All Implemented Interfaces:
Source, SourceLocator, ActiveSource, GroundedValue, Item, NodeInfo, Sequence, Location, Locator
Direct Known Subclasses:
TinyAttributeImpl, TinyParentNodeImpl, TinyTextImpl, WhitespaceTextImpl
public abstract class TinyNodeImpl extends Object implements NodeInfo
A node in a TinyTree representing an XML element, character content, or attribute.

This is the top-level class in the implementation class hierarchy; it essentially contains all those methods that can be defined using other primitive methods, without direct access to data.

  • Field Details

    • tree

      protected final TinyTree tree

    • nodeNr

      protected final int nodeNr

    • parent

      protected TinyNodeImpl parent

    • NODE_LETTER

      public static final char[] NODE_LETTER
      Characteristic letters to identify each type of node, indexed using the node type values. These are used as the initial letter of the result of generate-id()

  • Constructor Details

    • TinyNodeImpl

      protected TinyNodeImpl(TinyTree tree, int nodeNr)

  • Method Details

    • getGenre

      public Genre getGenre()
      Get the genre of this item
      Specified by:
      getGenre in interface Item
      Specified by:
      getGenre in interface NodeInfo
      Returns:
      the genre

    • getTreeInfo

      public TreeInfo getTreeInfo()
      Get information about the tree to which this NodeInfo belongs
      Specified by:
      getTreeInfo in interface NodeInfo
      Returns:
      the TreeInfo
      Since:
      9.7

    • head

      public NodeInfo head()
      To implement Sequence, this method returns the item itself
      Specified by:
      head in interface GroundedValue
      Specified by:
      head in interface Item
      Specified by:
      head in interface Sequence
      Returns:
      this item

    • getSchemaType

      public SchemaType getSchemaType()
      Get the type annotation of this node, if any. The type annotation is represented as SchemaType object.

      Types derived from a DTD are not reflected in the result of this method.

      Specified by:
      getSchemaType in interface NodeInfo
      Returns:
      For element and attribute nodes: the type annotation derived from schema validation (defaulting to xs:untyped and xs:untypedAtomic in the absence of schema validation). For comments, text nodes, processing instructions, and namespaces: null. For document nodes, either xs:untyped if the document has not been validated, or xs:anyType if it has.
      Since:
      9.4

    • getColumnNumber

      public int getColumnNumber()
      Get the column number of the node. The default implementation returns -1, meaning unknown
      Specified by:
      getColumnNumber in interface Location
      Specified by:
      getColumnNumber in interface Locator
      Specified by:
      getColumnNumber in interface NodeInfo
      Specified by:
      getColumnNumber in interface SourceLocator
      Returns:
      the column number of the node in its original source document; or -1 if not available. The default implementation returns -1.

    • setSystemId

      public void setSystemId(String uri)
      Set the system id of this node.

      This method is present to ensure that the class implements the javax.xml.transform.Source interface, so a node can be used as the source of a transformation.

      Specified by:
      setSystemId in interface NodeInfo
      Specified by:
      setSystemId in interface Source

    • setParentNode

      protected void setParentNode(TinyNodeImpl parent)
      Set the parent of this node. Providing this information is useful, if it is known, because otherwise getParent() has to search backwards through the document.
      Parameters:
      parent - the parent of this node

    • isSameNodeInfo

      public boolean isSameNodeInfo(NodeInfo other)
      Determine whether this is the same node as another node
      Specified by:
      isSameNodeInfo in interface NodeInfo
      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.

    • equals

      public boolean equals(Object other)
      The equals() method compares nodes for identity. It is defined to give the same result as isSameNodeInfo().
      Specified by:
      equals in interface NodeInfo
      Overrides:
      equals in class Object
      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.
      Since:
      8.7 Previously, the effect of the equals() method was not defined. Callers should therefore be aware that third party implementations of the NodeInfo interface may not implement the correct semantics. It is safer to use isSameNodeInfo() for this reason. The equals() method has been defined because it is useful in contexts such as a Java Set or HashMap.

    • hashCode

      public int hashCode()
      The hashCode() method obeys the contract for hashCode(): that is, if two objects are equal (represent the same node) then they must have the same hashCode()
      Specified by:
      hashCode in interface NodeInfo
      Overrides:
      hashCode in class Object
      Since:
      8.7 Previously, the effect of the equals() and hashCode() methods was not defined. Callers should therefore be aware that third party implementations of the NodeInfo interface may not implement the correct semantics.

    • getSystemId

      public String getSystemId()
      Get the system ID for the entity containing the node.
      Specified by:
      getSystemId in interface Location
      Specified by:
      getSystemId in interface Locator
      Specified by:
      getSystemId in interface NodeInfo
      Specified by:
      getSystemId in interface Source
      Specified by:
      getSystemId in interface SourceLocator
      Returns:
      the System Identifier of the entity in the source document containing the node, or null if not known or not applicable.

    • getBaseURI

      public String getBaseURI()
      Get the base URI for the node. Default implementation for child nodes gets the base URI of the parent node.
      Specified by:
      getBaseURI in interface NodeInfo
      Returns:
      the base URI of the node. This may be null if the base URI is unknown, including the case where the node has no parent.

    • getLineNumber

      public int getLineNumber()
      Get the line number of the node within its source document entity
      Specified by:
      getLineNumber in interface Location
      Specified by:
      getLineNumber in interface Locator
      Specified by:
      getLineNumber in interface NodeInfo
      Specified by:
      getLineNumber in interface SourceLocator
      Returns:
      the line number of the node in its original source document; or -1 if not available. The default implementation returns -1.

    • saveLocation

      public Location saveLocation()
      Get an immutable copy of this Location object. By default Location objects may be mutable, so they should not be saved for later use. The result of this operation holds the same location information, but in an immutable form.
      Specified by:
      saveLocation in interface Location
      Returns:
      an immutable copy (which may be the original object, if it is already immutable)

    • getSequenceNumber

      protected long getSequenceNumber()
      Get the node sequence number (in document order). Sequence numbers are monotonic but not consecutive. The sequence number must be unique within the document (not, as in previous releases, within the whole document collection). For document nodes, elements, text nodes, comment nodes, and PIs, the sequence number is a long with the sequential node number in the top half and zero in the bottom half. The bottom half is used only for attributes and namespace.
      Returns:
      the sequence number

    • compareOrder

      public final 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())

    • hasFingerprint

      public final boolean hasFingerprint()
      Ask whether this NodeInfo implementation holds a fingerprint identifying the name of the node in the NamePool. If the answer is true, then the getFingerprint() method must return the fingerprint of the node. If the answer is false, then the getFingerprint() method should throw an UnsupportedOperationException. In the case of unnamed nodes such as text nodes, the result can be either true (in which case getFingerprint() should return -1) or false (in which case getFingerprint may throw an exception).
      Specified by:
      hasFingerprint in interface NodeInfo
      Returns:
      true if the implementation of this node provides fingerprints.
      Since:
      9.8; previously Saxon relied on using FingerprintedNode as a marker interface.

    • getFingerprint

      public int getFingerprint()
      Get the fingerprint of the node, used for matching names
      Specified by:
      getFingerprint in interface NodeInfo
      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.

    • getPrefix

      public String getPrefix()
      Get the prefix part of the name of this node. This is the name before the ":" if any.
      Specified by:
      getPrefix in interface NodeInfo
      Returns:
      the prefix part of the name. For an unnamed node, return "".

    • getNamespaceUri

      public NamespaceUri getNamespaceUri()
      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:
      getNamespaceUri in interface NodeInfo
      Returns:
      The URI of the namespace of this node. For an unnamed node, or for an element or attribute in the default namespace, return an empty string.

    • hasURI

      public boolean hasURI(NamespaceUri ns)
      Test whether the URI part of the name of this node is equal to a specific value.
      Parameters:
      ns - the alleged namespace URI
      Returns:
      true if the namespace of the node is the same as the alleged namespace URI

    • getDisplayName

      public String getDisplayName()
      Get the display name of this node (a lexical QName). For elements and attributes this is [prefix:]localname. The original prefix is retained. For unnamed nodes, the result is an empty string.
      Specified by:
      getDisplayName in interface NodeInfo
      Returns:
      The display name of this node. For a node with no name, return an empty string.

    • getLocalPart

      public String getLocalPart()
      Get the local part of the name of this node.
      Specified by:
      getLocalPart in interface NodeInfo
      Returns:
      The local name of this node. For a node with no name, return "".

    • iterateAxis

      public AxisIterator iterateAxis(int axisNumber)
      Return an iterator over all the nodes reached by the given axis from this node
      Specified by:
      iterateAxis in interface NodeInfo
      Parameters:
      axisNumber - Identifies the required axis, eg. Axis.CHILD or Axis.PARENT
      Returns:
      a AxisIteratorImpl that scans the nodes reached by the axis in turn.
      See Also:

    • iterateAxis

      public AxisIterator iterateAxis(int axisNumber, NodePredicate predicate)
      Return an iterator over the nodes reached by the given axis from this node
      Specified by:
      iterateAxis in interface NodeInfo
      Parameters:
      axisNumber - Identifies the required axis, eg. Axis.CHILD or Axis.PARENT
      predicate - A condition to be matched by the returned nodes.
      Returns:
      a AxisIteratorImpl that scans the nodes reached by the axis in turn.
      See Also:

    • getParent

      public TinyNodeImpl getParent()
      Find the parent node of this node.
      Specified by:
      getParent in interface NodeInfo
      Returns:
      The Node object describing the containing element or root node.

    • getParentNodeNr

      protected static int getParentNodeNr(TinyTree tree, int nodeNr)
      Static method to get the parent of a given node, without instantiating the node as an object. The starting node is any node other than an attribute or namespace node.
      Parameters:
      tree - the tree containing the starting node
      nodeNr - the node number of the starting node within the tree
      Returns:
      the node number of the parent node, or -1 if there is no parent.

    • hasChildNodes

      public boolean hasChildNodes()
      Determine whether the node has any children.
      Specified by:
      hasChildNodes in interface NodeInfo
      Returns:
      true if this node has any attributes, false otherwise.

    • getAttributeValue

      public String getAttributeValue(NamespaceUri uri, String local)
      Get the string value of a given attribute of this node
      Specified by:
      getAttributeValue in interface NodeInfo
      Parameters:
      uri - the namespace URI of the attribute name. Supply the empty string for an attribute that is in no namespace
      local - 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

    • getRoot

      public NodeInfo getRoot()
      Get the root node of the tree (not necessarily a document node)
      Specified by:
      getRoot in interface NodeInfo
      Returns:
      the NodeInfo representing the root of this tree

    • getConfiguration

      public Configuration getConfiguration()
      Get the configuration
      Specified by:
      getConfiguration in interface NodeInfo
      Returns:
      the Configuration to which the tree belongs. The default implementation invokes getTreeInfo().getConfiguration().

    • getNamePool

      public NamePool getNamePool()
      Get the NamePool for the tree containing this node
      Returns:
      the NamePool

    • getDeclaredNamespaces

      public NamespaceBinding[] getDeclaredNamespaces(NamespaceBinding[] buffer)
      Get all namespace undeclarations and undeclarations defined on this element.
      Specified by:
      getDeclaredNamespaces in interface NodeInfo
      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 objects 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 binding objects (essentially prefix/uri pairs) If the URI is "", 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 null.

    • 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 interface NodeInfo
      Returns:
      the in-scope namespaces for an element, or null for any other kind of node.

    • generateId

      public void generateId(StringBuilder buffer)
      Get a character string that uniquely identifies this node
      Specified by:
      generateId in interface NodeInfo
      Parameters:
      buffer - buffer, which on return will contain a character string that uniquely identifies this node.

    • isAncestorOrSelf

      public boolean isAncestorOrSelf(TinyNodeImpl d)
      Test if this node is an ancestor-or-self of another
      Parameters:
      d - the putative descendant-or-self node
      Returns:
      true if this node is an ancestor-or-self of d

    • isId

      public boolean isId()
      Determine whether this node has the is-id property
      Specified by:
      isId in interface NodeInfo
      Returns:
      true if the node is an ID

    • isIdref

      public boolean isIdref()
      Determine whether this node has the is-idref property
      Specified by:
      isIdref in interface NodeInfo
      Returns:
      true if the node is an IDREF or IDREFS element or attribute

    • isNilled

      public boolean isNilled()
      Determine whether the node has the is-nilled property
      Specified by:
      isNilled in interface NodeInfo
      Returns:
      true if the node has the is-nilled property

    • isStreamed

      public boolean isStreamed()
      Ask whether this is a node in a streamed document
      Specified by:
      isStreamed in interface Item
      Specified by:
      isStreamed in interface NodeInfo
      Returns:
      true if the node is in a document being processed using streaming

    • getTree

      public TinyTree getTree()
      Get the TinyTree object containing this node
      Returns:
      the TinyTree. Note that this may also contain other unrelated trees

    • getNodeNumber

      public int getNodeNumber()
      Get the node number of this node within the TinyTree. This method is intended for internal use.
      Returns:
      the internal node number