com.saxonica.ee.stream

Class ContentDetector

java.lang.Object

net.sf.saxon.event.SequenceReceiver

net.sf.saxon.event.ProxyReceiver

com.saxonica.ee.stream.ContentDetector

All Implemented Interfaces:

javax.xml.transform.Result, Receiver

public class ContentDetector
extends ProxyReceiver

A ContentDetector is a filter that can be added to a Receiver pipeline to note whether the current element node has children. It delays sending the startContent() event to the next Receiver in the pipeline until it is known whether the start tag is followed by children, or is followed immediately by an end tag. It then passes this information to subsequent filters in the pipeline by use of property flags.

Field Summary

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 and Description
ContentDetector(StartTagBuffer nextReceiver)

Method Summary

Modifier and Type	Method and Description
void	characters(java.lang.CharSequence chars, Location locationId, int properties) Character data
void	comment(java.lang.CharSequence chars, Location locationId, int properties) Output a comment
void	endElement() End of element
void	processingInstruction(java.lang.String target, java.lang.CharSequence data, Location locationId, int properties) Processing Instruction
void	startContent() Notify the start of the content, that is, the completion of all attributes and namespaces.
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

append, attribute, close, endDocument, getNamePool, getUnderlyingReceiver, namespace, open, setPipelineConfiguration, setSystemId, setUnderlyingReceiver, setUnparsedEntity, startDocument, usesTypeAnnotations

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

append, getConfiguration, getPipelineConfiguration, getSystemId, isTrueSequenceReceiver

Methods inherited from class java.lang.Object

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

Constructor Detail

ContentDetector

public ContentDetector(StartTagBuffer nextReceiver)

Method Detail

startElement

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

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 - integer code identifying the element's type within the name pool.

location -

properties - properties of the element node

Throws:

XPathException - if an error occurs

startContent

public void startContent()
                  throws XPathException

Notify the start of the content, that is, the completion of all attributes and namespaces. Note that the initial receiver of output from XSLT instructions will not receive this event, it has to detect it itself. Note that this event is reported for every element even if it has no attributes, no namespaces, and no content.

Specified by:

startContent in interface Receiver

Overrides:

startContent in class ProxyReceiver

Throws:

XPathException - if an error occurs

endElement

public void endElement()
                throws XPathException

End of element

Specified by:

endElement in interface Receiver

Overrides:

endElement in class ProxyReceiver

Throws:

XPathException - if an error occurs

characters

public void characters(java.lang.CharSequence chars,
                       Location locationId,
                       int properties)
                throws XPathException

Character data

Specified by:

characters in interface Receiver

Overrides:

characters in class ProxyReceiver

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

processingInstruction

public void processingInstruction(java.lang.String target,
                                  java.lang.CharSequence data,
                                  Location locationId,
                                  int properties)
                           throws XPathException

Processing Instruction

Specified by:

processingInstruction in interface Receiver

Overrides:

processingInstruction in class ProxyReceiver

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

comment

public void comment(java.lang.CharSequence chars,
                    Location locationId,
                    int properties)
             throws XPathException

Output a comment

Specified by:

comment in interface Receiver

Overrides:

comment in class ProxyReceiver

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