Module dev.metaschema.core

Package dev.metaschema.core.metapath.function.regex

package dev.metaschema.core.metapath.function.regex

Provides regular expression support for implementing Metapath functions.

This package contains utilities for processing regular expressions in accordance with the XPath 3.1 specification. It handles the translation of XPath-style regex flags to Java Pattern flags and provides error handling for invalid regular expressions.

Key Classes

• RegexUtil - Utility methods for parsing XPath regex flags and creating Java Pattern objects
• RegularExpressionMetapathException - Exception thrown when regular expression processing fails

XPath Regex Flags

The package supports XPath 3.1 regex flags as defined in the specification:

• s - Dot-all mode (. matches newlines)
• m - Multiline mode (^ and $ match line boundaries)
• i - Case-insensitive matching
• x - Comments mode (whitespace and comments ignored)
• q - Literal mode (metacharacters treated as ordinary characters)

Usage

This package is used internally by Metapath functions that perform pattern matching, such as fn:matches, fn:replace, and fn:tokenize.

See Also:

• XPath 3.1 Regular Expression Syntax
• dev.metaschema.core.metapath.function.library

Related Packages

Package	Description
dev.metaschema.core.metapath.function	Provides the core framework for defining and executing Metapath functions.
dev.metaschema.core.metapath.function.library	Built-in Metapath function implementations based on the XPath 3.1 specification.

Class	Description
RegexUtil	Utility methods for regular expression processing in Metapath functions.
RegularExpressionMetapathException	MPRX: Exceptions related to regular expression processing in Metapath functions.