Package net.sf.saxon.event

Class ComplexContentOutputter

java.lang.Object
net.sf.saxon.event.Outputter
net.sf.saxon.event.ComplexContentOutputter
All Implemented Interfaces:
Result, Receiver
public final class ComplexContentOutputter extends Outputter implements Receiver, Result
This class is used for generating complex content, that is, the content of an element or document node. It enforces the rules on the order of events within complex content (attributes and namespaces must come first), and it implements part of the namespace fixup rules, in particular, it ensures that there is a namespace node for the namespace used in the element name and in each attribute name.

The same ComplexContentOutputter may be used for generating an entire XML document; it is not necessary to create a new outputter for each element node.

From Saxon 9.9, the ComplexContentOutputter does not combine top-level events. Unless nested within a startDocument/endDocument or startElement/endElement pair, items such as atomic values, text nodes, attribute nodes, maps and arrays are passed through unchanged to the output. It is typically the responsibility of the Destination object to decide how to combine top-level events (whether to build a single document, whether to insert item separators, etc).

From Saxon 10.0, the handling of namespaces changes. Unlike other receivers, the ComplexContentOutputter can receive individual namespace events as part of the complex content of an element node. The class is now fully responsible for namespace fixup and for namespace inheritance. The mechanism for namespace inheritance is changed; we are now maintaining all the in-scope namespaces for an element rather than a set of deltas, so namespace inheritance (rather than disinheritance) now requires concrete action.

  • Constructor Details

    • ComplexContentOutputter

      public ComplexContentOutputter(Receiver next)
      Create a ComplexContentOutputter
      Parameters:
      next - the next receiver in the pipeline

  • Method Details

    • makeComplexContentReceiver

      public static ComplexContentOutputter makeComplexContentReceiver(Receiver receiver, ParseOptions options)
      Static factory method to create an push pipeline containing a ComplexContentOutputter
      Parameters:
      receiver - the destination to which the constructed complex content will be written
      options - options for validating the output stream; may be null
      Returns:
      the new ComplexContentOutputter at the head of the constructed pipeline

    • setPipelineConfiguration

      public void setPipelineConfiguration(PipelineConfiguration pipe)
      Description copied from class: Outputter
      Set the pipeline configuration
      Specified by:
      setPipelineConfiguration in interface Receiver
      Overrides:
      setPipelineConfiguration in class Outputter
      Parameters:
      pipe - the pipeline configuration

    • setSystemId

      public void setSystemId(String systemId)
      Description copied from class: Outputter
      Set the System ID of the tree represented by this event stream
      Specified by:
      setSystemId in interface Result
      Overrides:
      setSystemId in class Outputter
      Parameters:
      systemId - the system ID (which is used as the base URI of the nodes if there is no xml:base attribute)

    • setHostLanguage

      public void setHostLanguage(HostLanguage language)
      Set the host language
      Parameters:
      language - the host language, for example HostLanguage.XQUERY

    • setReceiver

      public void setReceiver(Receiver receiver)
      Set the receiver (to handle the next stage in the pipeline) directly
      Parameters:
      receiver - the receiver to handle the next stage in the pipeline

    • getReceiver

      public Receiver getReceiver()
      Get the next receiver in the processing pipeline
      Returns:
      the receiver which this ComplexContentOutputter writes to

    • open

      public void open() throws XPathException
      Start the output process
      Specified by:
      open in interface Receiver
      Overrides:
      open in class Outputter
      Throws:
      XPathException - if an error occurs

    • startDocument

      public void startDocument(int properties) throws XPathException
      Start of a document node.
      Specified by:
      startDocument in interface Receiver
      Specified by:
      startDocument in class Outputter
      Parameters:
      properties - any special properties of the node
      Throws:
      XPathException - if an error occurs

    • endDocument

      public void endDocument() throws XPathException
      Notify the end of a document node
      Specified by:
      endDocument in interface Receiver
      Specified by:
      endDocument in class Outputter
      Throws:
      XPathException - if an error occurs

    • setUnparsedEntity

      public void setUnparsedEntity(String name, String systemID, String publicID) throws XPathException
      Notify an unparsed entity URI.
      Specified by:
      setUnparsedEntity in interface Receiver
      Overrides:
      setUnparsedEntity in class Outputter
      Parameters:
      name - The name of the unparsed entity
      systemID - The system identifier of the unparsed entity
      publicID - The public identifier of the unparsed entity
      Throws:
      XPathException - if an error occurs

    • characters

      public void characters(UnicodeString s, Location locationId, int properties) throws XPathException
      Produce text content output.
      Special characters are escaped using XML/HTML conventions if the output format requires it.
      Specified by:
      characters in interface Receiver
      Specified by:
      characters in class Outputter
      Parameters:
      s - The String to be output
      locationId - the location of the node in the source, or of the instruction that created it
      properties - any special properties of the node
      Throws:
      XPathException - for any failure

    • startElement

      public void startElement(NodeName elemName, SchemaType typeCode, Location location, int properties) throws XPathException
      Output an element start tag.
      The actual output of the tag is deferred until all attributes have been output using attribute().
      Specified by:
      startElement in class Outputter
      Parameters:
      elemName - The element name
      typeCode - the type annotation of the element.
      location - the location of the element node (or the instruction that created it)
      properties - any special properties of the node
      Throws:
      XPathException - if an error occurs

    • namespace

      public void namespace(String prefix, NamespaceUri namespaceUri, int properties) throws XPathException
      Add a namespace node to the content being constructed.
      Specified by:
      namespace in class Outputter
      Parameters:
      prefix - The namespace prefix; zero-length string for the default namespace
      namespaceUri - 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:
      Throws:
      XPathException - if an error occurs

    • namespaces

      public void namespaces(NamespaceBindingSet bindings, int properties) throws XPathException
      Output a set of namespace bindings. This should have the same effect as outputting the namespace bindings individually using Outputter.namespace(String, NamespaceUri, int), but it may be more efficient. It is used only when copying an element node together with all its namespaces, so less checking is needed that the namespaces form a consistent and complete set
      Overrides:
      namespaces in class Outputter
      Parameters:
      bindings - the set of namespace bindings
      properties - any special properties. The property ReceiverOption.NAMESPACE_OK means that no checking is needed.
      Throws:
      XPathException - if any failure occurs

    • attribute

      public void attribute(NodeName attName, SimpleType typeCode, String value, Location locationId, int properties) throws XPathException
      Output an attribute value.

      This is added to a list of pending attributes for the current start tag, overwriting any previous attribute with the same name. But in XQuery, duplicate attributes are reported as an error.

      This method must NOT be used to output namespace declarations.

      Specified by:
      attribute in class Outputter
      Parameters:
      attName - The name of the attribute
      typeCode - The type annotation of the attribute
      value - The value of the attribute
      locationId - the location of the node in the source, or of the instruction that created it
      properties - Bit fields containing properties of the attribute to be written @throws XPathException if there is no start tag to write to (created using writeStartTag),
      Throws:
      XPathException - if an error occurs

    • startElement

      public void startElement(NodeName elemName, SchemaType type, AttributeMap attributes, NamespaceMap namespaces, Location location, int properties) throws XPathException
      Notify the start of an element. This version of the method supplies all attributes and namespaces and implicitly invokes startContent(), which means it cannot be followed by further calls on Outputter.attribute(NodeName, SimpleType, String, Location, int) or Outputter.namespace(java.lang.String, net.sf.saxon.om.NamespaceUri, int) to define further attributes and namespaces.

      This version of the method does not perform namespace fixup for prefixes used in the element name or attribute names; it is assumed that these prefixes are declared within the namespace map, and that there are no conflicts. The method does, however, perform namespace inheritance: that is, unless properties includes ReceiverOption.DISINHERIT_NAMESPACES, namespaces declared on the parent element and not overridden are implicitly added to the namespace map.

      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

    • endElement

      public void endElement() throws XPathException
      Output an element end tag.
      Specified by:
      endElement in interface Receiver
      Specified by:
      endElement in class Outputter
      Throws:
      XPathException - if an error occurs

    • comment

      public void comment(UnicodeString comment, Location locationId, int properties) throws XPathException
      Write a comment
      Specified by:
      comment in interface Receiver
      Specified by:
      comment in class Outputter
      Parameters:
      comment - 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

    • processingInstruction

      public void processingInstruction(String target, UnicodeString data, Location locationId, int properties) throws XPathException
      Write a processing instruction
      Specified by:
      processingInstruction in interface Receiver
      Specified by:
      processingInstruction in class Outputter
      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

    • append

      public void append(Item item, Location locationId, int copyNamespaces) throws XPathException
      Append an arbitrary item (node or atomic value) to the output
      Specified by:
      append in interface Receiver
      Overrides:
      append in class Outputter
      Parameters:
      item - the item to be appended
      locationId - the location of the calling instruction, for diagnostics
      copyNamespaces - 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
      Throws:
      XPathException - if an error occurs

    • getStringReceiver

      public UniStringConsumer getStringReceiver(boolean asTextNode, Location loc)
      Get a string-value consumer object that allows an item of type xs:string to be appended one fragment at a time. This potentially allows operations that output large strings to avoid building the entire string in memory. This version of the method, if called at an inner level, outputs the string as a sequence of characters() events, with logic to include space separation where appropriate
      Overrides:
      getStringReceiver in class Outputter
      Parameters:
      asTextNode - set to true if the concatenated string values are to be treated * as a text node item rather than a string
      Returns:
      an object that accepts xs:string values via a sequence of append() calls

    • close

      public void close() throws XPathException
      Close the output
      Specified by:
      close in interface Receiver
      Overrides:
      close in class Outputter
      Throws:
      XPathException - if an error occurs

    • startContent

      public void startContent() throws XPathException
      Flush out a pending start tag
      Overrides:
      startContent in class Outputter
      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 Outputter
      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