Package com.saxonica.ee.stream.feed

Class SinkFeed

java.lang.Object

net.sf.saxon.event.Outputter

net.sf.saxon.event.ProxyOutputter

com.saxonica.ee.stream.feed.ItemFeed

com.saxonica.ee.stream.feed.SinkFeed

All Implemented Interfaces:

Result, Receiver

public class SinkFeed
extends ItemFeed

An ItemFeed that swallows (discards) all input passed to it

Field Summary

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

pipelineConfiguration, systemId

Fields inherited from interface javax.xml.transform.Result

PI_DISABLE_OUTPUT_ESCAPING, PI_ENABLE_OUTPUT_ESCAPING

Constructor Summary

Constructors

Constructor	Description
SinkFeed(XPathContext context)

Method Summary

Modifier and Type	Method	Description
void	append(Item item)	Supply one item towards the streamed input of the expression
boolean	handlesAppend()	Ask whether this Receiver can handle arbitrary items in its Receiver.append(net.sf.saxon.om.Item, net.sf.saxon.s9api.Location, int) and Receiver.append(Item, Location, int) methods.
void	open(Terminator terminator)	Start evaluating the expression.

Methods inherited from class com.saxonica.ee.stream.feed.ItemFeed

append, close, dynamicError, endSelectedParentNode, getContext, getExpression, getResultFeed, getTerminator, hasFailed, processItems, setExpression, setHasFailed, setTerminator, startSelectedParentNode

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

attribute, characters, comment, endDocument, endElement, getNextOutputter, namespace, open, processingInstruction, setUnparsedEntity, startContent, startDocument, startElement, startElement, usesTypeAnnotations

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

getConfiguration, getPipelineConfiguration, getStringReceiver, getSystemId, namespaces, setPipelineConfiguration, setSystemId, spreadStartElement

Methods inherited from class java.lang.Object

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

Constructor Details

SinkFeed

public SinkFeed(XPathContext context)

Method Details

open

public void open(Terminator terminator)
          throws XPathException

Description copied from class: ItemFeed

Start evaluating the expression. The default implementation does nothing.

Overrides:

open in class ItemFeed

Parameters:

terminator - used to achieve early exit

Throws:

XPathException - if a dynamic error occurs

append

public void append(Item item)
            throws XPathException

Description copied from class: ItemFeed

Supply one item towards the streamed input of the expression

Specified by:

append in interface Receiver

Specified by:

append in class ItemFeed

Parameters:

item - the item to be supplied

Throws:

XPathException - if the operation fails

handlesAppend

public boolean handlesAppend()

Description copied from interface: Receiver

Ask whether this Receiver can handle arbitrary items in its Receiver.append(net.sf.saxon.om.Item, net.sf.saxon.s9api.Location, int) and Receiver.append(Item, Location, int) methods. If it cannot, then calling these methods will raise an exception (typically but not necessarily an UnsupportedOperationException). The default implementation of this method returns false.

Returns:

true if the Receiver is able to handle items supplied to its Receiver.append(net.sf.saxon.om.Item, net.sf.saxon.s9api.Location, int) and Receiver.append(Item, Location, int) methods. A receiver that returns true may still reject some kinds of item, for example it may reject function items.