com.saxonica.stream

Class StreamingPatternMaker

java.lang.Object

com.saxonica.stream.StreamingPatternMaker

public class StreamingPatternMaker
extends Object

Factory class to make a streaming pattern from an expression. This is a variant of the class PatternMaker which handles the special rules for the streaming case.

Constructor Summary

Constructors

Constructor and Description
StreamingPatternMaker()

Method Summary

Methods

Modifier and Type	Method and Description
static Pattern	makeStreamingPattern(Expression expression, Configuration config, List<String> reasonForFailure) Convert an expression that is capable of being evaluated as a filter on an XML event stream into a Pattern object which is able to act as the filter

Methods inherited from class java.lang.Object

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

Constructor Detail

StreamingPatternMaker

public StreamingPatternMaker()

Method Detail

makeStreamingPattern

public static Pattern makeStreamingPattern(Expression expression,
                           Configuration config,
                           List<String> reasonForFailure)

Convert an expression that is capable of being evaluated as a filter on an XML event stream into a Pattern object which is able to act as the filter

Parameters:

expression - the expression to be converted, which must already have been simplified and type-checked

config - the Saxon configurtaion

reasonForFailure - a list which will be populated with messages giving reasons why the expression cannot be converted

Returns:

the Pattern object if conversion succeeds; otherwise null