public String validate()

in src/main/java/org/apache/commons/validator/routines/RegexValidator.java [227:249]

• 23 lines of code
• 7 McCabe index (conditional complexity)

    public String validate(final String value) {
        if (value == null) {
            return null;
        }
        for (final Pattern pattern : patterns) {
            final Matcher matcher = pattern.matcher(value);
            if (matcher.matches()) {
                final int count = matcher.groupCount();
                if (count == 1) {
                    return matcher.group(1);
                }
                final StringBuilder buffer = new StringBuilder();
                for (int j = 0; j < count; j++) {
                    final String component = matcher.group(j + 1);
                    if (component != null) {
                        buffer.append(component);
                    }
                }
                return buffer.toString();
            }
        }
        return null;
    }