net.sf.saxon.event
Class ComplexContentOutputter

java.lang.Object
  net.sf.saxon.event.SequenceReceiver
      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()
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(int nameCode, int 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(int nscode, 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(int nameCode, int 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

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()

Create a ComplexContentOutputter

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

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

endDocument

public void endDocument()
                 throws XPathException

Notify the end of a document node

Throws:

XPathException

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(int nameCode,
                         int 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:

nameCode - The element name code

typeCode - integer code identifying the element's type within the name pool. The value -1 indicates the default type, xs:untyped.

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

namespace

public void namespace(int nscode,
                      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:

nscode - The namespace code

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: it sets the REJECT_DUPLICATES flag, and this is treated as a hard 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(int nameCode,
                      int 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:

nameCode - 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

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. The following bits are defined:

CHECKED

Comment is known to be legal (e.g. doesn't contain "--")

Throws:

XPathException

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. The following bits are defined:

CHECKED

Data is known to be legal (e.g. doesn't contain "?>")

Throws:

XPathException

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

close

public void close()
           throws XPathException

Close the output

Throws:

XPathException

startContent

public void startContent()
                  throws XPathException

Flush out a pending start tag

Throws:

XPathException

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