Package net.sf.saxon.event

Class EventMonitor

java.lang.Object

net.sf.saxon.event.SequenceReceiver

net.sf.saxon.event.ProxyReceiver

net.sf.saxon.event.EventMonitor

All Implemented Interfaces:

Result, Receiver

public class EventMonitor
extends ProxyReceiver

An EventMonitor is a filter that passes all events down the pipeline unchanged, keeping a note of whether any data has passed through the filter. At any stage it is possible to ask whether any data has been written.

Since:

9.9

Field Summary

Fields

Modifier and Type	Field	Description
(package private) boolean	written

Fields inherited from class net.sf.saxon.event.ProxyReceiver

nextReceiver

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
EventMonitor(Receiver next)

Method Summary

Modifier and Type	Method	Description
void	append(Item item, Location location, int properties)	Append an arbitrary item (node or atomic value) to the output
void	attribute(NodeName attName, SimpleType typeCode, CharSequence value, Location location, int properties)	Notify an attribute.
void	characters(CharSequence chars, Location location, int properties)	Character data
void	comment(CharSequence content, Location location, int properties)	Output a comment
boolean	hasBeenWrittenTo()
void	namespace(NamespaceBindingSet namespaceBindings, int properties)	Notify a namespace.
void	processingInstruction(String name, CharSequence data, Location location, int properties)	Processing Instruction
void	startElement(NodeName elemName, SchemaType typeCode, Location location, int properties)	Notify the start of an element

Methods inherited from class net.sf.saxon.event.ProxyReceiver

close, endDocument, endElement, getNamePool, getNextReceiver, open, setPipelineConfiguration, setSystemId, setUnderlyingReceiver, setUnparsedEntity, startContent, startDocument, usesTypeAnnotations

Methods inherited from class net.sf.saxon.event.SequenceReceiver

append, decompose, flatten, getConfiguration, getErrorCodeForDecomposingFunctionItems, getPipelineConfiguration, getSystemId, handlesAppend

Methods inherited from class java.lang.Object

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

Field Detail

written

boolean written

Constructor Detail

EventMonitor

public EventMonitor(Receiver next)

Method Detail

startElement

public void startElement(NodeName elemName,
                         SchemaType typeCode,
                         Location location,
                         int properties)
                  throws XPathException

Description copied from class: ProxyReceiver

Notify the start of an element

Specified by:

startElement in interface Receiver

Overrides:

startElement in class ProxyReceiver

Parameters:

elemName - integer code identifying the name of the element within the name pool.

typeCode - the element's type annotation.

location - a location associated with the event (typically either a location in the source document or the stylesheet)

properties - properties of the element node

Throws:

XPathException - if an error occurs

namespace

public void namespace(NamespaceBindingSet namespaceBindings,
                      int properties)
               throws XPathException

Description copied from class: ProxyReceiver

Notify a namespace. Namespaces are notified after the startElement event, and before any children for the element. The namespaces that are reported are only required to include those that are different from the parent element; however, duplicates may be reported. A namespace must not conflict with any namespaces already used for element or attribute names.

Specified by:

namespace in interface Receiver

Overrides:

namespace in class ProxyReceiver

Parameters:

namespaceBindings - the prefix/uri pair representing the namespace binding

properties - any special properties to be passed on this call

Throws:

XPathException - if an error occurs

attribute

public void attribute(NodeName attName,
                      SimpleType typeCode,
                      CharSequence value,
                      Location location,
                      int properties)
               throws XPathException

Description copied from class: ProxyReceiver

Notify an attribute. Attributes are notified after the startElement event, and before any children. Namespaces and attributes may be intermingled.

Specified by:

attribute in interface Receiver

Overrides:

attribute in class ProxyReceiver

Parameters:

attName - The name of the attribute

typeCode - The type of the attribute

value - the string value of the attribute

location - The location of the node

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

Throws:

XPathException - if an error occurs

characters

public void characters(CharSequence chars,
                       Location location,
                       int properties)
                throws XPathException

Description copied from class: ProxyReceiver

Character data

Specified by:

characters in interface Receiver

Overrides:

characters in class ProxyReceiver

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

Throws:

XPathException - if an error occurs

processingInstruction

public void processingInstruction(String name,
                                  CharSequence data,
                                  Location location,
                                  int properties)
                           throws XPathException

Description copied from class: ProxyReceiver

Processing Instruction

Specified by:

processingInstruction in interface Receiver

Overrides:

processingInstruction in class ProxyReceiver

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.

Throws:

XPathException - if an error occurs

comment

public void comment(CharSequence content,
                    Location location,
                    int properties)
             throws XPathException

Description copied from class: ProxyReceiver

Output a comment

Specified by:

comment in interface Receiver

Overrides:

comment in class ProxyReceiver

Parameters:

content - The content of the comment

location - provides information such as line number and system ID.

properties - Additional information about the comment.

Throws:

XPathException - if an error occurs

append

public void append(Item item,
                   Location location,
                   int properties)
            throws XPathException

Description copied from class: ProxyReceiver

Append an arbitrary item (node or atomic value) to the output

Specified by:

append in interface Receiver

Overrides:

append in class ProxyReceiver

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 ReceiverOptions.ALL_NAMESPACES, ReceiverOptions.LOCAL_NAMESPACES; the default (0) means no namespaces

Throws:

XPathException

hasBeenWrittenTo

public boolean hasBeenWrittenTo()