Class OutputterEventBuffer

  • All Implemented Interfaces:
    javax.xml.transform.Result, Receiver

    public class OutputterEventBuffer
    extends Outputter
    An EventBuffer is a receiver of events that records the events in memory for subsequent replay. It is used, for example, in the implementation of try/catch, where events cannot be written directly to the final serializer in case an error occurs and is caught.

    Note that events are retained along with their properties, so the class implements "sticky disable-output-escaping" - text nodes can have selected characters marked with the disable-escaping property.

    Since:
    9.9
    • Constructor Detail

      • OutputterEventBuffer

        public OutputterEventBuffer()
    • Method Detail

      • setBuffer

        public void setBuffer​(java.util.List<OutputterEvent> buffer)
      • startElement

        public void startElement​(NodeName elemName,
                                 SchemaType type,
                                 AttributeMap attributes,
                                 NamespaceMap namespaces,
                                 Location location,
                                 int properties)
                          throws XPathException
        Description copied from class: Outputter
        Notify the start of an element, supplying all attributes and namespaces
        Specified by:
        startElement in interface Receiver
        Overrides:
        startElement in class Outputter
        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
      • attribute

        public void attribute​(NodeName name,
                              SimpleType type,
                              java.lang.String value,
                              Location location,
                              int properties)
        Description copied from class: Outputter
        Notify an attribute. Attributes are notified after the startElement event, and before any children. Namespaces and attributes may be intermingled.
        Specified by:
        attribute in class Outputter
        Parameters:
        name - The name of the attribute
        type - The type annotation of the attribute
        value - the string value of the attribute
        location - provides information such as line number and system ID.
        properties - Bit significant value. The following bits are defined:
        DISABLE_ESCAPING
        Disable escaping for this attribute
        NO_SPECIAL_CHARACTERS
        Attribute value contains no special characters
      • namespace

        public void namespace​(java.lang.String prefix,
                              NamespaceUri uri,
                              int properties)
        Description copied from class: Outputter
        Notify a namespace binding. This method is called at some point after startElement(). The semantics are similar to the xsl:namespace instruction in XSLT, or the namespace node constructor in XQuery. A namespace must not conflict with any namespaces already used for element or attribute names.
        Specified by:
        namespace in class Outputter
        Parameters:
        prefix - The namespace prefix; zero-length string for the default namespace
        uri - The namespace URI. In some cases a zero-length string may be used to indicate a namespace undeclaration.
        properties - The REJECT_DUPLICATES property: if set, the namespace declaration will be rejected if it conflicts with a previous declaration of the same prefix. If the property is not set, the namespace declaration will be ignored if it conflicts with a previous declaration. This reflects the fact that when copying a tree, namespaces for child elements are emitted before the namespaces of their parent element. Unfortunately this conflicts with the XSLT rule for complex content construction, where the recovery action in the event of conflicts is to take the namespace that comes last. XSLT therefore doesn't recover from this error:
      • startContent

        public void startContent()
        Description copied from class: Outputter
        Notify the start of the content, that is, the completion of all attributes and namespaces. Note that the initial Outputter of output from XSLT instructions will not receive this event, it has to detect it itself. Note that this event is reported for every element even if it has no attributes, no namespaces, and no content.
        Overrides:
        startContent in class Outputter
      • characters

        public void characters​(UnicodeString chars,
                               Location location,
                               int properties)
        Description copied from class: Outputter
        Notify character data. Note that some receivers may require the character data to be sent in a single event, but in general this is not a requirement.
        Specified by:
        characters in interface Receiver
        Specified by:
        characters in class Outputter
        Parameters:
        chars - The characters
        location - 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
      • processingInstruction

        public void processingInstruction​(java.lang.String name,
                                          UnicodeString data,
                                          Location location,
                                          int properties)
        Description copied from class: Outputter
        Output a processing instruction
        Specified by:
        processingInstruction in interface Receiver
        Specified by:
        processingInstruction in class Outputter
        Parameters:
        name - The PI name. This must be a legal name (it will not be checked).
        data - The data portion of the processing instruction
        location - provides information such as line number and system ID.
        properties - Additional information about the PI.
      • comment

        public void comment​(UnicodeString content,
                            Location location,
                            int properties)
        Description copied from class: Outputter
        Notify a comment. Comments are only notified if they are outside the DTD.
        Specified by:
        comment in interface Receiver
        Specified by:
        comment in class Outputter
        Parameters:
        content - The content of the comment
        location - provides information such as line number and system ID.
        properties - Additional information about the comment.
      • append

        public void append​(Item item,
                           Location location,
                           int properties)
        Description copied from class: Outputter
        Append an arbitrary item (node, atomic value, or function) to the output. The default implementation throws UnsupportedOperationException.
        Specified by:
        append in interface Receiver
        Overrides:
        append in class Outputter
        Parameters:
        item - the item to be appended
        location - the location of the calling instruction, for diagnostics
        properties - if the item is an element node, this indicates whether its namespaces need to be copied. Values are ReceiverOption.ALL_NAMESPACES; the default (0) means
      • close

        public void close()
        Description copied from class: Outputter
        Notify the end of the event stream
        Specified by:
        close in interface Receiver
        Overrides:
        close in class Outputter
      • replay

        public void replay​(Outputter out)
                    throws XPathException
        Replay the captured events to a supplied destination
        Parameters:
        out - the destination Receiver to receive the events
        Throws:
        XPathException - if any error occurs
      • isEmpty

        public boolean isEmpty()
      • reset

        public void reset()