Package net.sf.saxon.query

Class SequenceWrapper

java.lang.Object

net.sf.saxon.event.SequenceReceiver

net.sf.saxon.query.SequenceWrapper

All Implemented Interfaces:

Result, Receiver

public class SequenceWrapper
extends SequenceReceiver

This class can be used in a push pipeline: it accepts any sequence as input, and generates a document in which the items of the sequence are wrapped by elements containing information about the types of the items in the input sequence.

Field Summary

Fields

Modifier and Type	Field	Description
static final NamespaceUri	RESULT_NS

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

Constructors

Constructor	Description
SequenceWrapper(Receiver destination)	Create a sequence wrapper.

Method Summary

Modifier and Type	Method	Description
void	append(Item item, Location locationId, int copyNamespaces)	Output an item (atomic value or node) to the sequence
void	characters(UnicodeString chars, Location locationId, int properties)	Character data
void	close()	Notify the end of the event stream
void	comment(UnicodeString chars, Location locationId, int properties)	Output a comment
void	endDocument()	Notify the end of a document node
void	endElement()	End of element
ComplexContentOutputter	getDestination()
void	open()	Start the output process
void	processingInstruction(String target, UnicodeString data, Location locationId, int properties)	Processing Instruction
void	startDocument(int properties)	Start of a document node.
void	startElement(NodeName elemName, SchemaType type, AttributeMap attributes, NamespaceMap namespaces, Location location, int properties)	Notify the start of an element
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, decompose, flatten, getConfiguration, getErrorCodeForDecomposingFunctionItems, getNamePool, getPipelineConfiguration, getSystemId, handlesAppend, setPipelineConfiguration, setSystemId, setUnparsedEntity

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

RESULT_NS

public static final NamespaceUri RESULT_NS

Constructor Details

SequenceWrapper

public SequenceWrapper(Receiver destination)

Create a sequence wrapper. This creates an XML representation of the items sent to destination in which the types of all items are made explicit

Parameters:

destination - the sequence being wrapped

Method Details

getDestination

public ComplexContentOutputter getDestination()

open

public void open()
          throws XPathException

Description copied from class: SequenceReceiver

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 - properties of the document node

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

startElement

public void startElement(NodeName elemName,
 SchemaType type,
 AttributeMap attributes,
 NamespaceMap namespaces,
 Location location,
 int properties)
                  throws XPathException

Notify the start of an element

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

End of element

Throws:

XPathException - if an error occurs

characters

public void characters(UnicodeString chars,
 Location locationId,
 int properties)
                throws XPathException

Character data

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

comment

public void comment(UnicodeString chars,
 Location locationId,
 int properties)
             throws XPathException

Output a comment

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

processingInstruction

public void processingInstruction(String target,
 UnicodeString data,
 Location locationId,
 int properties)
                           throws XPathException

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 - 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

Output an item (atomic value or node) to the sequence

Specified by:

append in interface Receiver

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 ReceiverOption.ALL_NAMESPACES; the default (0) means

Throws:

XPathException - if an error occurs

close

public void close()
           throws XPathException

Notify the end of the event stream

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