Class IDFilter

All Implemented Interfaces:
Result, Receiver

public class IDFilter extends ProxyReceiver
IDFilter is a ProxyReceiver that extracts the subtree of a document rooted at the element with a given ID value. Namespace declarations outside this subtree are treated as if they were present on the identified element.

Note, this class only looks for ID attributes, not for ID elements.

  • Constructor Details

  • Method Details

    • startElement

      public void startElement(NodeName elemName, SchemaType type, AttributeMap attributes, NamespaceMap namespaces, Location location, int properties) throws XPathException
      startElement
      Specified by:
      startElement in interface Receiver
      Overrides:
      startElement in class ProxyReceiver
      Parameters:
      elemName - the name of the element.
      type - the type annotation of the element.
      attributes - 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
      endElement:
      Specified by:
      endElement in interface Receiver
      Overrides:
      endElement in class ProxyReceiver
      Throws:
      XPathException - if an error occurs
    • characters

      public void characters(UnicodeString chars, Location locationId, int properties) throws XPathException
      Character data
      Specified by:
      characters in interface Receiver
      Overrides:
      characters in class ProxyReceiver
      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 target, UnicodeString data, Location locationId, int properties) throws XPathException
      Processing Instruction
      Specified by:
      processingInstruction in interface Receiver
      Overrides:
      processingInstruction in class ProxyReceiver
      Parameters:
      target - The PI name. This must be a legal name (it will not be checked).
      data - The data portion of the processing instruction
      locationId - provides information such as line number and system ID.
      properties - Additional information about the PI.
      Throws:
      XPathException - if an error occurs
    • comment

      public void comment(UnicodeString chars, Location locationId, int properties) throws XPathException
      Output a comment
      Specified by:
      comment in interface Receiver
      Overrides:
      comment in class ProxyReceiver
      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
    • usesTypeAnnotations

      public boolean usesTypeAnnotations()
      Ask whether this Receiver (or the downstream pipeline) makes any use of the type annotations supplied on element and attribute events
      Specified by:
      usesTypeAnnotations in interface Receiver
      Overrides:
      usesTypeAnnotations in class ProxyReceiver
      Returns:
      true if the Receiver makes any use of this information. If false, the caller may supply untyped nodes instead of supplying the type annotation