net.sf.saxon.event
Class ComplexContentOutputter

java.lang.Object
  extended by net.sf.saxon.event.SequenceReceiver
      extended by net.sf.saxon.event.ComplexContentOutputter
All Implemented Interfaces:
Result, Receiver

public final class ComplexContentOutputter
extends SequenceReceiver

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.

Author:
Michael H. Kay

Field Summary
 
Fields inherited from class net.sf.saxon.event.SequenceReceiver
pipelineConfiguration, previousAtomic, systemId
 
Fields inherited from interface javax.xml.transform.Result
PI_DISABLE_OUTPUT_ESCAPING, PI_ENABLE_OUTPUT_ESCAPING
 
Constructor Summary
ComplexContentOutputter(PipelineConfiguration pipe)
          Create a ComplexContentOutputter
 
Method Summary
 void append(Item item, int locationId, int copyNamespaces)
          Append an arbitrary item (node or atomic value) to the output
 void attribute(NodeName attName, SimpleType typeCode, CharSequence value, int locationId, int properties)
          Output an attribute value.
 void characters(CharSequence s, int locationId, int properties)
          Produce text content output.
 void close()
          Close the output
 void comment(CharSequence comment, int locationId, int properties)
          Write a comment
 boolean contentHasBeenWritten()
          Test whether any content has been written to this ComplexContentOutputter
 void endDocument()
          Notify the end of a document node
 void endElement()
          Output an element end tag.
 void namespace(NamespaceBinding nsBinding, int properties)
          Output a namespace declaration.
 void open()
          Start the output process
 void processingInstruction(String target, CharSequence data, int locationId, int properties)
          Write a processing instruction
 void setHostLanguage(int language)
          Set the host language
 void setPipelineConfiguration(PipelineConfiguration pipe)
          Set the pipeline configuration
 void setReceiver(Receiver receiver)
          Set the receiver (to handle the next stage in the pipeline) directly
 void startContent()
          Flush out a pending start tag
 void startDocument(int properties)
          Start of a document node.
 void startElement(NodeName elemName, SchemaType typeCode, int locationId, int properties)
          Output an element start tag.
 boolean usesTypeAnnotations()
          Ask whether this Receiver (or the downstream pipeline) makes any use of the type annotations supplied on element and attribute events
 
Methods inherited from class net.sf.saxon.event.SequenceReceiver
append, getConfiguration, getNamePool, getPipelineConfiguration, getSystemId, setSystemId, setUnparsedEntity
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ComplexContentOutputter

public ComplexContentOutputter(PipelineConfiguration pipe)
Create a ComplexContentOutputter

Parameters:
pipe - the pipeline configuration
Method Detail

setPipelineConfiguration

public void setPipelineConfiguration(PipelineConfiguration pipe)
Description copied from interface: Receiver
Set the pipeline configuration

Specified by:
setPipelineConfiguration in interface Receiver
Overrides:
setPipelineConfiguration in class SequenceReceiver
Parameters:
pipe - the pipeline configuration

setHostLanguage

public void setHostLanguage(int language)
Set the host language

Parameters:
language - the host language, for example Configuration.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

contentHasBeenWritten

public boolean contentHasBeenWritten()
Test whether any content has been written to this ComplexContentOutputter

Returns:
true if content has been written

open

public void open()
          throws XPathException
Start the output process

Specified by:
open in interface Receiver
Overrides:
open in class SequenceReceiver
Throws:
XPathException - if an error occurs

startDocument

public void startDocument(int properties)
                   throws XPathException
Start of a document node.

Parameters:
properties - bit-significant integer indicating properties of the document node. The definitions of the bits are in class ReceiverOptions
Throws:
XPathException - if an error occurs

endDocument

public void endDocument()
                 throws XPathException
Notify the end of a document node

Throws:
XPathException - if an error occurs

characters

public void characters(CharSequence s,
                       int locationId,
                       int properties)
                throws XPathException
Produce text content output.
Special characters are escaped using XML/HTML conventions if the output format requires it.

Parameters:
s - The String to be output
locationId - an integer which can be interpreted using a LocationProvider to return information such as line number and system ID. If no location information is available, the value zero is supplied.
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 - for any failure

startElement

public void startElement(NodeName elemName,
                         SchemaType typeCode,
                         int locationId,
                         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().

Parameters:
elemName - The element name
typeCode - the type annotation of the element.
locationId - an integer which can be interpreted using a LocationProvider to return information such as line number and system ID. If no location information is available, the value zero is supplied.
properties - bit-significant properties of the element node. If there are no revelant properties, zero is supplied. The definitions of the bits are in class ReceiverOptions
Throws:
XPathException - if an error occurs

namespace

public void namespace(NamespaceBinding nsBinding,
                      int properties)
               throws XPathException
Output a namespace declaration.
This is added to a list of pending namespaces for the current start tag. If there is already another declaration of the same prefix, this one is ignored, unless the REJECT_DUPLICATES flag is set, in which case this is an error. Note that unlike SAX2 startPrefixMapping(), this call is made AFTER writing the start tag.

Parameters:
nsBinding - The namespace binding
properties - The most important property is REJECT_DUPLICATES. If this property is 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 there is no start tag to write to (created using writeStartTag), or if character content has been written since the start tag was written.

attribute

public void attribute(NodeName attName,
                      SimpleType typeCode,
                      CharSequence value,
                      int 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.
This method should NOT be used to output namespace declarations.

Parameters:
attName - The name of the attribute
value - The value of the attribute
properties - Bit fields containing properties of the attribute to be written
typeCode - The type of the attribute, as held in the name pool. The additional bit NodeInfo.IS_DTD_TYPE may be set to indicate a DTD-derived type.
locationId - an integer which can be interpreted using a LocationProvider to return information such as line number and system ID. If no location information is available, the value zero is supplied.
Throws:
XPathException - if there is no start tag to write to (created using writeStartTag), or if character content has been written since the start tag was written.

endElement

public void endElement()
                throws XPathException
Output an element end tag.

Throws:
XPathException - if an error occurs

comment

public void comment(CharSequence comment,
                    int locationId,
                    int properties)
             throws XPathException
Write a comment

Parameters:
comment - The content of the comment
locationId - an integer which can be interpreted using a LocationProvider to return information such as line number and system ID. If no location information is available, the value zero is supplied.
properties - Additional information about the comment.
Throws:
XPathException - if an error occurs

processingInstruction

public void processingInstruction(String target,
                                  CharSequence data,
                                  int locationId,
                                  int properties)
                           throws XPathException
Write a processing instruction

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 - an integer which can be interpreted using a LocationProvider to return information such as line number and system ID. If no location information is available, the value zero is supplied.
properties - Additional information about the PI.
Throws:
XPathException - if an error occurs

append

public void append(Item item,
                   int locationId,
                   int copyNamespaces)
            throws XPathException
Append an arbitrary item (node or atomic value) to the output

Specified by:
append in class SequenceReceiver
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 NodeInfo.ALL_NAMESPACES, NodeInfo.LOCAL_NAMESPACES, NodeInfo.NO_NAMESPACES
Throws:
XPathException - if the operation fails

close

public void close()
           throws XPathException
Close the output

Throws:
XPathException - if an error occurs

startContent

public void startContent()
                  throws XPathException
Flush out a pending start tag

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

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


Copyright (c) 2004-2011 Saxonica Limited. All rights reserved.