Class JRegexIterator

    • Constructor Detail

      • JRegexIterator

        public JRegexIterator​(java.lang.String str,
                              java.util.regex.Pattern pattern)
        Construct a RegexIterator. Note that the underlying matcher.find() method is called once to obtain each matching substring. But the iterator also returns non-matching substrings if these appear between the matching substrings.
        str - the string to be analysed
        pattern - the regular expression
    • Method Detail

      • getLength

        public int getLength()
        Description copied from interface: LastPositionFinder
        Get the last position (that is, the number of items in the sequence). This method is non-destructive: it does not change the state of the iterator. The result is undefined if the next() method of the iterator has already returned null. This method must not be called unless the LastPositionFinder.supportsGetLength() has been called and has returned true.
        Specified by:
        getLength in interface LastPositionFinder
        the number of items in the sequence
      • isMatching

        public boolean isMatching()
        Determine whether the current item is a matching item or a non-matching item
        Specified by:
        isMatching in interface RegexIterator
        true if the current item (the one most recently returned by next()) is an item that matches the regular expression, or false if it is an item that does not match
      • getRegexGroup

        public UnicodeString getRegexGroup​(int number)
        Get a substring that matches a parenthesised group within the regular expression
        Specified by:
        getRegexGroup in interface RegexIterator
        number - the number of the group to be obtained
        the substring of the current item that matches the n'th parenthesized group within the regular expression
      • processMatchingSubstring

        public void processMatchingSubstring​(RegexMatchHandler action)
                                      throws XPathException
        Process a matching substring, performing specified actions at the start and end of each captured subgroup. This method will always be called when operating in "push" mode; it writes its result to context.getReceiver(). The matching substring text is all written to the receiver, interspersed with calls to the methods onGroupStart() and onGroupEnd().
        Specified by:
        processMatchingSubstring in interface RegexIterator
        action - defines the processing to be performed at the start and end of a group