Package net.sf.saxon.option.jdom

Class JDOMNodeWrapper

java.lang.Object
net.sf.saxon.tree.wrapper.AbstractNodeWrapper
net.sf.saxon.option.jdom.JDOMNodeWrapper
All Implemented Interfaces:
Iterable<NodeInfo>, Source, SourceLocator, Location, GroundedValue<NodeInfo>, Item<NodeInfo>, NodeInfo, Sequence<NodeInfo>, SiblingCountingNode, VirtualNode, Locator
public class JDOMNodeWrapper extends AbstractNodeWrapper implements SiblingCountingNode
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 JDOM nodes.

Author:
Michael H. Kay

  • Field Details

    • node

      protected Object node

    • nodeKind

      protected short nodeKind

    • index

      protected int index

  • Constructor Details

    • JDOMNodeWrapper

      protected JDOMNodeWrapper(Object node, JDOMNodeWrapper parent, int index)
      This constructor is protected: nodes should be created using the wrap factory method on the DocumentWrapper class
      Parameters:
      node - The JDOM node to be wrapped
      parent - The NodeWrapper that wraps the parent of this node
      index - Position of this node among its siblings

  • Method Details

    • makeWrapper

      protected static JDOMNodeWrapper makeWrapper(Object node, JDOMDocumentWrapper docWrapper)
      Factory method to wrap a JDOM node with a wrapper that implements the Saxon NodeInfo interface.
      Parameters:
      node - The JDOM node
      docWrapper - The wrapper for the Document containing this node
      Returns:
      The new wrapper for the supplied node

    • makeWrapper

      protected static JDOMNodeWrapper makeWrapper(Object node, JDOMDocumentWrapper docWrapper, JDOMNodeWrapper parent, int index)
      Factory method to wrap a JDOM node with a wrapper that implements the Saxon NodeInfo interface.
      Parameters:
      node - The JDOM node
      docWrapper - The wrapper for the Document containing this node
      parent - The wrapper for the parent of the JDOM node
      index - The position of this node relative to its siblings
      Returns:
      The new wrapper for the supplied node

    • getTreeInfo

      public JDOMDocumentWrapper getTreeInfo()
      Description copied from interface: NodeInfo
      Get information about the tree to which this NodeInfo belongs
      Specified by:
      getTreeInfo in interface NodeInfo
      Overrides:
      getTreeInfo in class AbstractNodeWrapper
      Returns:
      the TreeInfo

    • getUnderlyingNode

      public Object getUnderlyingNode()
      Get the underlying JDOM node, to implement the VirtualNode interface. If this wrapper node represents a list of adjacent text nodes, then the first of the text nodes is returned.
      Specified by:
      getUnderlyingNode in interface VirtualNode
      Returns:
      The underlying node.

    • getNodeKind

      public int getNodeKind()
      Return the type of node.
      Specified by:
      getNodeKind in interface NodeInfo
      Returns:
      one of the values Node.ELEMENT, Node.TEXT, Node.ATTRIBUTE, etc.
      See Also:

    • 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())

    • getStringValueCS

      public 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 interface GroundedValue<NodeInfo>
      Specified by:
      getStringValueCS in interface Item<NodeInfo>
      Returns:
      the string value of the item
      See Also:

    • 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 part of the name of this node. This is the name before the ":" if any. (Note, this method isn't required as part of the NodeInfo interface.)
      Specified by:
      getPrefix in interface NodeInfo
      Returns:
      the prefix part of the name. For an unnamed node, return an empty string.

    • 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.

    • 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

    • 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 JDOM, the numbering actually refers to the position of the underlying JDOM nodes; thus the sibling position for the text node is that of the first JDOM node to which it relates, and the numbering of subsequent XPath nodes is not necessarily consecutive.
      Specified by:
      getSiblingPosition in interface SiblingCountingNode
      Returns:
      0 for the first child, 1 for the second child, etc.

    • iterateAttributes

      protected AxisIterator 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.

    • iterateChildren

      protected AxisIterator iterateChildren(NodeTest 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 class AbstractNodeWrapper
      Parameters:
      nodeTest - a test that the returned attributes must satisfy
      Returns:
      an iterator over the child nodes, in document order.

    • iterateSiblings

      protected AxisIterator 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.

    • iterateDescendants

      protected AxisIterator iterateDescendants(NodeTest 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 class AbstractNodeWrapper
      Parameters:
      nodeTest - a test that the returned descendants must satisfy
      includeSelf - true if this node is to be included in the result
      Returns:
      an iterator over the sibling nodes, in axis order.

    • getAttributeValue

      public String getAttributeValue(String uri, String local)
      Get the string value of a given attribute of this node
      Specified by:
      getAttributeValue in interface NodeInfo
      Overrides:
      getAttributeValue in class AbstractNodeWrapper
      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:
      8.4

    • 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 interface NodeInfo
      Overrides:
      hasChildNodes in class AbstractNodeWrapper
      Returns:
      True if the node has one or more children

    • 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 interface NodeInfo
      Parameters:
      buffer - a Buffer to contain a string that uniquely identifies this node, across all documents

    • getDeclaredNamespaces

      public NamespaceBinding[] getDeclaredNamespaces(NamespaceBinding[] buffer)
      Get all namespace undeclarations and undeclarations defined on this element.
      Specified by:
      getDeclaredNamespaces in interface NodeInfo
      Overrides:
      getDeclaredNamespaces in class AbstractNodeWrapper
      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.

    • 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