public class SimpleNodeConstructorFeed extends ItemFeed
The SimpleContentFeed is used when the node is constructed as a result of a computation on the streamed data,
for example xsl:value-of select="distinct-values(.//@price)"
. By contrast, a SimpleContentWatch
is used when the streamed nodes are selected directly, for example xsl:value-of select=".//@price"
.
Both a Feed and a Watch are needed because a simple content constructor operates on a sequence of nodes without simply atomizing the sequence.
Constructor and Description |
---|
SimpleNodeConstructorFeed(Expression expr,
Feed result,
XPathContext context) |
Modifier and Type | Method and Description |
---|---|
void |
close()
Finish evaluating the expression.
|
void |
open(Terminator terminator)
Start evaluating the expression.
|
void |
processItem(Item item)
Supply an item to the feed
|
dynamicError, endSelectedParentNode, getContext, getExpression, getPipelineConfiguration, getReceiver, getResult, getTerminator, hasFailed, processItems, setExpression, setHasFailed, setPipelineConfiguration, setTerminator, startSelectedParentNode
public SimpleNodeConstructorFeed(Expression expr, Feed result, XPathContext context)
public void open(Terminator terminator) throws XPathException
ItemFeed
open
in interface Feed
open
in class ItemFeed
terminator
- used to achieve early exitXPathException
- if a dynamic error occurspublic void processItem(Item item) throws XPathException
processItem
in interface Feed
processItem
in class ItemFeed
item
- the item being fedXPathException
- to report any failurepublic void close() throws XPathException
ItemFeed
close
in interface Feed
close
in class ItemFeed
XPathException
- if a dynamic error occursCopyright (c) 2004-2018 Saxonica Limited. All rights reserved.