Package net.sf.saxon.tree.linked

Class LinkedTreeBuilder

java.lang.Object
net.sf.saxon.event.Builder
net.sf.saxon.tree.linked.LinkedTreeBuilder
All Implemented Interfaces:
Result, Receiver
public class LinkedTreeBuilder extends Builder
The LinkedTreeBuilder class is responsible for taking a stream of Receiver events and constructing a Document tree using the linked tree implementation.

  • Constructor Details

    • LinkedTreeBuilder

      public LinkedTreeBuilder(PipelineConfiguration pipe)
      Create a Builder and initialise variables
      Parameters:
      pipe - the pipeline configuration

    • LinkedTreeBuilder

      public LinkedTreeBuilder(PipelineConfiguration pipe, Durability durability)
      Create a Builder and initialise variables
      Parameters:
      pipe - the pipeline configuration
      durability - the durability of the tree to be constructed

  • Method Details

    • setDurability

      public void setDurability(Durability durability)
      Overrides:
      setDurability in class Builder

    • getCurrentRoot

      public NodeInfo getCurrentRoot()
      Get the current root node. This will normally be a document node, but if the root of the tree is an element node, it can be an element.
      Overrides:
      getCurrentRoot in class Builder
      Returns:
      the root of the tree that is currently being built, or that has been most recently built using this builder

    • reset

      public void reset()
      Description copied from class: Builder
      Reset the builder to its initial state. The most important effect of calling this method (implemented in subclasses) is to release any links to the constructed document tree, allowing the memory occupied by the tree to released by the garbage collector even if the Builder is still in memory. This can happen because the Builder is referenced from a parser in the Configuration's parser pool.
      Overrides:
      reset in class Builder

    • setAllocateSequenceNumbers

      public void setAllocateSequenceNumbers(boolean allocate)
      Set whether the builder should allocate sequence numbers to elements as they are added to the tree. This is normally done, because it provides a quick way of comparing document order. But nodes added using XQuery update are not sequence-numbered.
      Parameters:
      allocate - true if sequence numbers are to be allocated

    • setNodeFactory

      public void setNodeFactory(NodeFactory factory)
      Set the Node Factory to use. If none is specified, the Builder uses its own.
      Parameters:
      factory - the node factory to be used. This allows custom objects to be used to represent the elements in the tree.

    • open

      public void open()
      Open the stream of Receiver events
      Specified by:
      open in interface Receiver
      Overrides:
      open in class Builder

    • startDocument

      public void startDocument(int properties) throws XPathException
      Start of a document node. This event is ignored: we simply add the contained elements to the current document
      Parameters:
      properties - properties of the document node
      Throws:
      XPathException - if an error occurs

    • endDocument

      public void endDocument() throws XPathException
      Notify the end of the document
      Throws:
      XPathException - if an error occurs

    • close

      public void close() throws XPathException
      Close the stream of Receiver events
      Specified by:
      close in interface Receiver
      Overrides:
      close in class Builder
      Throws:
      XPathException - if an error occurs

    • startElement

      public void startElement(NodeName elemName, SchemaType type, AttributeMap suppliedAttributes, NamespaceMap namespaces, Location location, int properties) throws XPathException
      Notify the start of an element
      Parameters:
      elemName - the name of the element.
      type - the type annotation of the element.
      suppliedAttributes - the attributes of this element
      namespaces - the in-scope namespaces of this element: generally this is all the in-scope namespaces, without relying on inheriting namespaces from parent elements
      location - an object providing information about the module, line, and column where the node originated
      properties - bit-significant properties of the element node. If there are no relevant properties, zero is supplied. The definitions of the bits are in class ReceiverOption
      Throws:
      XPathException - if an error occurs

    • endElement

      public void endElement() throws XPathException
      Notify the end of an element
      Throws:
      XPathException - if an error occurs

    • characters

      public void characters(UnicodeString chars, Location locationId, int properties) throws XPathException
      Notify a text node. Adjacent text nodes must have already been merged
      Parameters:
      chars - The characters
      locationId - provides information such as line number and system ID.
      properties - Bit significant value. The following bits are defined:
      DISABLE_ESCAPING
      Disable escaping for this text node
      USE_CDATA
      Output as a CDATA section
      Throws:
      XPathException - if an error occurs

    • processingInstruction

      public void processingInstruction(String name, UnicodeString remainder, Location locationId, int properties)
      Notify a processing instruction
      Parameters:
      name - The PI name. This must be a legal name (it will not be checked).
      remainder - The data portion of the processing instruction
      locationId - provides information such as line number and system ID.
      properties - Additional information about the PI.

    • comment

      public void comment(UnicodeString chars, Location locationId, int properties) throws XPathException
      Notify a comment
      Parameters:
      chars - The content of the comment
      locationId - provides information such as line number and system ID.
      properties - Additional information about the comment.
      Throws:
      XPathException - if an error occurs

    • getCurrentParentNode

      public ParentNodeImpl getCurrentParentNode()
      Get the current document or element node
      Returns:
      the most recently started document or element node (to which children are currently being added) In the case of elements, this is only available after startContent() has been called

    • getCurrentLeafNode

      public NodeImpl getCurrentLeafNode()
      Get the current text, comment, or processing instruction node
      Returns:
      if any text, comment, or processing instruction nodes have been added to the current parent node, then return that text, comment, or PI; otherwise return null

    • graftElement

      public void graftElement(ElementImpl element)
      graftElement() allows an element node to be transferred from one tree to another. This is a dangerous internal interface which is used only to contruct a stylesheet tree from a stylesheet using the "literal result element as stylesheet" syntax. The supplied element is grafted onto the current element as its only child.
      Parameters:
      element - the element to be grafted in as a new child.

    • setUnparsedEntity

      public void setUnparsedEntity(String name, String uri, String publicId)
      Set an unparsed entity URI for the document
      Parameters:
      name - The name of the unparsed entity
      uri - The system identifier of the unparsed entity
      publicId - The identifier of the unparsed entity

    • getBuilderMonitor

      public BuilderMonitor getBuilderMonitor()
      Get a builder monitor for this builder. This must be called immediately after opening the builder, and all events to the builder must thenceforth be sent via the BuilderMonitor.
      Overrides:
      getBuilderMonitor in class Builder
      Returns:
      a new BuilderMonitor appropriate to this kind of Builder; or null if the Builder does not provide this service