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java.lang.Object net.sf.saxon.functions.regex.JRegexIterator
public class JRegexIterator
Class JRegexIterator - provides an iterator over matched and unmatched substrings. This implementation of RegexIterator uses the JDK regular expression engine.
Nested Class Summary |
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Nested classes/interfaces inherited from interface net.sf.saxon.functions.regex.RegexIterator |
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RegexIterator.OnGroup |
Field Summary |
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Fields inherited from interface net.sf.saxon.om.SequenceIterator |
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GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD |
Constructor Summary | |
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JRegexIterator(String string,
Pattern pattern)
Construct a RegexIterator. |
Method Summary | |
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void |
close()
Close the iterator. |
Item |
current()
Get the current item in the sequence |
SequenceIterator |
getAnother()
Get another iterator over the same items |
int |
getProperties()
Get properties of this iterator, as a bit-significant integer. |
String |
getRegexGroup(int number)
Get a substring that matches a parenthesised group within the regular expression |
SequenceIterator |
getRegexGroupIterator()
Get a sequence containing all the regex groups (except group 0, because we want to use indexing from 1). |
boolean |
isMatching()
Determine whether the current item is a matching item or a non-matching item |
Item |
next()
Get the next item in the sequence |
int |
position()
Get the position of the current item in the sequence |
void |
processMatchingSubstring(XPathContext context,
RegexIterator.OnGroup action)
Process a matching substring, performing specified actions at the start and end of each captured subgroup. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public JRegexIterator(String string, Pattern pattern)
string
- the string to be analysedpattern
- the regular expressionMethod Detail |
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public Item next()
next
in interface SequenceIterator
public Item current()
current
in interface SequenceIterator
public int position()
position
in interface SequenceIterator
public void close()
SequenceIterator
(Currently, closing an iterator is important only when the data is being "pushed" in another thread. Closing the iterator terminates that thread and means that it needs to do no additional work. Indeed, failing to close the iterator may cause the push thread to hang waiting for the buffer to be emptied.)
close
in interface SequenceIterator
public SequenceIterator getAnother()
getAnother
in interface SequenceIterator
public int getProperties()
getProperties
in interface SequenceIterator
SequenceIterator.GROUNDED
, SequenceIterator.LAST_POSITION_FINDER
,
and SequenceIterator.LOOKAHEAD
. It is always
acceptable to return the value zero, indicating that there are no known special properties.
It is acceptable for the properties of the iterator to change depending on its state.public boolean isMatching()
isMatching
in interface RegexIterator
public String getRegexGroup(int number)
getRegexGroup
in interface RegexIterator
number
- the number of the group to be obtained
public SequenceIterator getRegexGroupIterator()
getRegexGroupIterator
in interface RegexIterator
public void processMatchingSubstring(XPathContext context, RegexIterator.OnGroup action) throws XPathException
RegexIterator.OnGroup
methods onGroupStart() and onGroupEnd().
processMatchingSubstring
in interface RegexIterator
context
- the dynamic evaluation contextaction
- defines the processing to be performed at the start and end of a group
XPathException
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