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java.lang.Object com.saxonica.validate.AbstractWatch com.saxonica.stream.watch.ComposingWatch com.saxonica.stream.watch.SimpleContentWatch
public class SimpleContentWatch
This class is used when a streaming template requests evaluation of a simple content constructor in streaming mode (that is, when it constructs a text, attribute, comment, or PI node based on the contents of the streamed document). The result of this Watch is a single string, constructed using the rules of "Constructing Simple Content" in the XSLT specification.
The AdjacentTextNodeMergerFeed 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 Summary | |
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SimpleContentWatch(Feed result,
Stack<XPathContext> contextStack)
|
Method Summary | |
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void |
close()
The close() method is called immediately before the Watch is destroyed, that is, when the element whose declaration scopes the constraint implemented by this Watch goes out of scope. |
void |
endSelectedParentNode(int locationId)
Signal that the endElement event has occurred for the element whose startElement event caused the Watch to be activated. |
void |
notifySelectedLeafNode(FleetingNode node,
int locationId)
Signal that a node (other than an element) that matches the selection has been found. |
Receiver |
startSelectedParentNode(FleetingNode node,
int locationId)
Signal that an element has been found that matches the selection that this Watch is looking for. |
Methods inherited from class com.saxonica.stream.watch.ComposingWatch |
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getContext, getContextStack, getResult, open |
Methods inherited from class com.saxonica.validate.AbstractWatch |
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getAnchorNode, getNamespaceResolver, getPipelineConfiguration, getSelection, setAnchorNode, setNamespaceResolver, setPipelineConfiguration, setSelection |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface com.saxonica.stream.watch.Watch |
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getAnchorNode, getNamespaceResolver, getPipelineConfiguration, getSelection, open, setAnchorNode, setNamespaceResolver, setPipelineConfiguration, setSelection |
Constructor Detail |
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public SimpleContentWatch(Feed result, Stack<XPathContext> contextStack)
Method Detail |
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public Receiver startSelectedParentNode(FleetingNode node, int locationId) throws XPathException
startSelectedParentNode
in interface Watch
node
- locationId
- @throws net.sf.saxon.type.ValidationException
May be raised if the constraint implemented by this
Watch is violated
ValidationException
- May be raised if the constraint implemented by this
Watch is violated
XPathException
public void endSelectedParentNode(int locationId) throws XPathException
endSelectedParentNode
in interface Watch
locationId
- the location of the element
ValidationException
- May be raised if the constraint implemented by this
Watch is violated @param locationId
XPathException
- May be raised if a constraint implemented by this
Watch is violatedpublic void notifySelectedLeafNode(FleetingNode node, int locationId) throws XPathException
notifySelectedLeafNode
in interface Watch
notifySelectedLeafNode
in class AbstractWatch
node
- the node that was matched.locationId
-
XPathException
public final void close() throws XPathException
close
in interface Watch
close
in class ComposingWatch
XPathException
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