Package com.saxonica.ee.stream.feed
Class ItemMappingFeed
java.lang.Object
net.sf.saxon.event.Outputter
net.sf.saxon.event.ProxyOutputter
com.saxonica.ee.stream.feed.ItemFeed
com.saxonica.ee.stream.feed.GroundedItemFeed
com.saxonica.ee.stream.feed.ItemMappingFeed
A Feed which applies an ItemMappingFunction to each supplied item. This produces zero or one output
items for each input item. The ItemMappingFunction must be one that is capable of handling streamed nodes
(otherwise an UnsupportedOperationException is likely).
-
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
ConstructorsConstructorDescriptionItemMappingFeed
(Expression expr, ItemFeed result, XPathContext context, ItemMappingFunction function) -
Method Summary
Modifier and TypeMethodDescriptionvoid
Supply an item to the feedvoid
close()
Finish evaluating the expression.void
endSelectedParentNode
(Location locationId) Signal that the endElement event has occurred for the element whose startElement event caused the Watch to be activated.startSelectedParentNode
(FleetingParentNode node, Location locationId) Signal that an element or document node has been found that matches the selection that this Watch is looking for.Methods inherited from class com.saxonica.ee.stream.feed.GroundedItemFeed
attribute, characters, comment, endDocument, endElement, namespace, processingInstruction, setUnparsedEntity, startContent, startDocument, startElement, startElement
Methods inherited from class com.saxonica.ee.stream.feed.ItemFeed
append, dynamicError, getContext, getExpression, getResultFeed, getTerminator, hasFailed, open, processItems, setExpression, setHasFailed, setTerminator
Methods inherited from class net.sf.saxon.event.ProxyOutputter
getNextOutputter, open, 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
-
ItemMappingFeed
public ItemMappingFeed(Expression expr, ItemFeed result, XPathContext context, ItemMappingFunction function)
-
-
Method Details
-
startSelectedParentNode
public Receiver startSelectedParentNode(FleetingParentNode node, Location locationId) throws XPathException Description copied from class:ItemFeed
Signal that an element or document node has been found that matches the selection that this Watch is looking for. This method is called by the WatchManager while processing the startElement or startDocument event that matches the selection.- Overrides:
startSelectedParentNode
in classItemFeed
- Parameters:
node
- the element or document node whose start event has been matchedlocationId
- the location associated with the element or document node (may be the location of the instruction that created it)- Returns:
- a Receiver to be notified of all events starting with the startElement/startDocument event for the matched element, and ending with the endElement event for that element; or null if this feature is not required.
- Throws:
XPathException
- May be raised if a dynamic error occurs
-
endSelectedParentNode
Description copied from class:ItemFeed
Signal that the endElement event has occurred for the element whose startElement event caused the Watch to be activated.- Overrides:
endSelectedParentNode
in classItemFeed
- Parameters:
locationId
- the location of the element- Throws:
XPathException
- May be raised if a constraint implemented by this Watch is violated
-
append
Supply an item to the feed- Specified by:
append
in interfaceReceiver
- Specified by:
append
in classItemFeed
- Parameters:
item
- the item being fed- Throws:
XPathException
- to report any failure
-
close
Finish evaluating the expression. The default implementation does nothing.- Specified by:
close
in interfaceReceiver
- Overrides:
close
in classItemFeed
- Throws:
XPathException
- if a dynamic error occurs
-