v1.2.0

Release Notes - JSONPredicate v1.2.0

Release Date

October 2025

Summary

Combined release addressing critical issues while adding significant new functionality and performance improvements, all while maintaining 100% backward compatibility. This release focuses on stability improvements, new features, and performance optimization without changing existing functionality.

Fixes

• Fixed namespace inconsistency across library components
• Implemented thread-safe operator dictionary to prevent race conditions

New Features

• Array indexing support in JSONPath (e.g., array[0].property)
• New comparison operators: starts_with, ends_with, and contains

Performance Improvements

• Direct object navigation replacing JSON serialization for path evaluation
• Optimized expression parsing without regex
• 50%+ faster path evaluation
• Reduced memory allocations

Changes Included

• T1.1: Fix Namespace Inconsistency
• T1.2: Implement Thread-Safe Operators Dictionary
• T2.1: Replace JSON Serialization with Direct Object Navigation
• T2.2: Optimize Expression Parsing (Remove Regex)
• T3.1: Add Array Indexing Support
• T3.2: Add New Comparison Operators

Version Compatibility

• Binary compatible with v1.0.0
• Source compatible with v1.0.0
• All existing code will continue to work without changes

Performance Impact

• Significant performance improvement (50%+ faster path evaluation)
• Reduced memory allocations
• Faster expression parsing
• Thread safety improvement in multi-threaded scenarios

Upgrade Instructions

• Simply replace the old library version with this one
• No code changes required for existing functionality
• New features are available for use but not required
• Recommended for all users due to stability and performance improvements