com.saxonica.ee.stream

Class AccumulatorRegistryEE

java.lang.Object

net.sf.saxon.expr.accum.AccumulatorRegistry

com.saxonica.ee.stream.AccumulatorRegistryEE

public class AccumulatorRegistryEE
extends AccumulatorRegistry

Static registry containing the accumulators defined within a package; the Saxon-EE subclass includes support for streamed accumulators.

Field Summary

Fields inherited from class net.sf.saxon.expr.accum.AccumulatorRegistry

accumulatorsByName

Constructor Summary

Constructors

Constructor and Description
AccumulatorRegistryEE()

Method Summary

Modifier and Type	Method and Description
Sequence	getStreamingAccumulatorValue(NodeInfo node, Accumulator accumulator, AccumulatorFn.Phase phase) Get the run-time value of a streamed accumulator
static java.util.Map<Accumulator,AccumulatorWatch>	registerSelectedAccumulators(WatchManager watchManager, java.util.Set<? extends Accumulator> accumulators) Register all the rules for all the accumulators with a WatchManager handling events for a streaming pass over a source document

Methods inherited from class net.sf.saxon.expr.accum.AccumulatorRegistry

addAccumulator, getAccumulator, getAllAccumulators, getUsedAccumulators

Methods inherited from class java.lang.Object

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

Constructor Detail

AccumulatorRegistryEE

public AccumulatorRegistryEE()

Method Detail

registerSelectedAccumulators

public static java.util.Map<Accumulator,AccumulatorWatch> registerSelectedAccumulators(WatchManager watchManager,
                                                                                       java.util.Set<? extends Accumulator> accumulators)
                                                                                throws XPathException

Register all the rules for all the accumulators with a WatchManager handling events for a streaming pass over a source document

Parameters:

watchManager - the WatchManager with which the rules are to be registered

Returns:

a map from accumulators to accumulator watches

Throws:

XPathException - if an error occurs

getStreamingAccumulatorValue

public Sequence getStreamingAccumulatorValue(NodeInfo node,
                                             Accumulator accumulator,
                                             AccumulatorFn.Phase phase)
                                      throws XPathException

Get the run-time value of a streamed accumulator

Overrides:

getStreamingAccumulatorValue in class AccumulatorRegistry

Parameters:

node - the context node

accumulator - the accumulator whose value is required

phase - pre-descent or post-descent

Returns:

the value of the accumulator, or null if the context node is not streamed

Throws:

XPathException