Package com.saxonica.ee.stream.feed

Class CallableFeed

java.lang.Object

net.sf.saxon.event.Outputter

net.sf.saxon.event.ProxyOutputter

com.saxonica.ee.stream.feed.ItemFeed

com.saxonica.ee.stream.feed.CallableFeed

All Implemented Interfaces:

Result, Receiver

public class CallableFeed
extends ItemFeed

A CallableFeed is used to wrap an expression that does (a) not have intrinsic capability to accept streamed input, and (b) does not expect any operand to be a sequence, and (c) implements the Callable interface.

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
CallableFeed(Callable function, ItemFeed result, XPathContext context, Expression[] arguments)	Create a Feed that evaluates a Callable (often but not necessarily a function)

Method Summary

Modifier and Type	Method	Description
void	append(Item item)	Supply an item to the feed
void	close()	Finish evaluating the expression.

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

append, dynamicError, endSelectedParentNode, getContext, getExpression, getResultFeed, getTerminator, hasFailed, open, 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

Methods inherited from interface net.sf.saxon.event.Receiver

handlesAppend

Constructor Details

CallableFeed

public CallableFeed(Callable function,
 ItemFeed result,
 XPathContext context,
 Expression[] arguments)

Create a Feed that evaluates a Callable (often but not necessarily a function)

Parameters:

function - the function or other Callable

result - the place to send the results of evaluating this Callable

context - dynamic context information

arguments - the arguments to the Callable. Typically one of these is Consuming. The expression receives its input for the consuming argument via the processItem() call, and it then evaluates the other (non-streamed) arguments by calling iterate() on them.

Method Details

append

public void append(Item item)
            throws XPathException

Supply an item to the feed

Specified by:

append in interface Receiver

Specified by:

append in class ItemFeed

Parameters:

item - the item being fed

Throws:

XPathException - to report any failure

close

public void close()
           throws XPathException

Description copied from class: ItemFeed

Finish evaluating the expression.

Specified by:

close in interface Receiver

Overrides:

close in class ItemFeed

Throws:

XPathException - if a dynamic error occurs