Month: January 2026

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Announcing Lime MQL Editing 2026.1.0

We are excited to announce the first major release of the Lime MQL Editing plugin for IntelliJ IDEA, version 2026.1.0.  Program trading algorithms in Metaquotes Query Language (MQL) 4 or 5? This release marks a significant milestone as we take over the maintenance and development of the original MQL Idea plugin, providing continued support for the MQL4 and MQL5 programming languages within the JetBrains ecosystem.

A New Chapter: The Lime Mojito Fork

The original plugin by investflow.ru had become unmaintained, and Lime Mojito Pty Ltd has stepped in to ensure that MQL developers can continue to use their favourite IDE with modern features.

Key changes in this transition include:

  • Rebranding & Namespace Migration: The project has been rebranded as Lime MQL Editing. As part of this, the entire codebase has been migrated to the com.limemojito.oss namespace, providing a clean slate for future development.
  • Modernized Build Stack: We have updated the project to use Java 21 and Gradle 9.3. This ensures compatibility with the latest development tools and provides a more robust build environment.
  • IntelliJ IDEA 2025.3+ Compatibility: The plugin has been updated to support the latest versions of IntelliJ IDEA (build 253.30387 and above), taking advantage of recent platform improvements.

Features and Improvements

In this initial release, we focused on stabilizing the core functionality that MQL developers rely on:

  • Comprehensive MQL4/MQL5 Support: Full syntax highlighting, code completion, and navigation for both MQL4 and MQL5.
  • Inlined Documentation: Quick documentation lookup (Ctrl+Q) remains available in both English and Russian, helping you stay in the flow while coding.
  • Improved Project Structure: We’ve cleaned up the repository, removing legacy files and streamlining the plugin’s internal structure.
  • New Plugin Icon: A fresh new look with a dedicated plugin icon.
  • Automated CI/CD: We’ve implemented GitHub Actions for automated builds, signing, and releases, ensuring that every update is verified and secure.

Important Note on Compiler Support

In this version, we have clarified our support for external tools. While the plugin provides excellent editing capabilities, launching the MQL compiler directly from the IDE on Windows and Linux is currently not supported. We recommend using the MetaEditor compiler alongside the IDE for the compilation step while we investigate better integration options for future releases.

Getting Started

If you are currently using a legacy version of the MQLIdea plugin, we recommend the following steps for a smooth transition:

  1. Uninstall any previous versions of the MQLIdea plugin.
  2. Restart IntelliJ IDEA.
  3. Search for Lime MQL Editing in the JetBrains Marketplace and install it.
  4. Restart once more to finalize the installation.

We are committed to maintaining this project as an open-source tool under the GPL3 license. You can follow our progress and report issues on our GitHub repository.

Happy Trading and Coding!

— The Lime Mojito Team

References

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Spring Boot 4: Updating Open Source Standards

In late November 2025 Spring Boot 4 was released, built on the new Spring Framework 7. There are a number of API, starter packaging changes and a major api change for JSON parsing to use Jackson 3. Also Amazon Web Services SDK 1 reached end of life so we updated all utilities to use SDK 2. JUnit 4 dependencies were also removed so any older tests were update to JUnit 5 and JAssert.

We left our JVM at 21 and made the 25 upgrade a separate activity.

See OSS Github 16.0.3

Our changes to make version 16 compatible with Spring Boot 4 included:

1. Version and Dependency Management

  • Major Version Bump: The project version was upgraded from 15.x to 16.x to reflect major changes.
  • Spring Boot 4 Alignment: Updated parent POMs and library dependencies to align with Spring Boot 4 standards.
  • Dependency Cleanup:
    • Removed JUnit 4 dependencies in favor of JUnit 5.
    • Switched from spring-boot-starter-json to spring-boot-starter-jackson.
    • Completely excluded commons-logging to prevent it from “sneaking in” via other starters (e.g., spring-boot-test-starter).
  • Plugin Updates: Updated several Maven plugins, including versions-maven-plugin (to 2.20.1) and JaCoCo configurations to ensure compatibility with the new environment.

2. Jackson 3 Migration

  • Namespace Shift: Migrated from the traditional com.fasterxml.jackson namespace to the new tools.jackson namespace.
  • JsonLoader Refactoring: Updated JsonLoader to use JsonMapper instead of ObjectMapper.
  • New Configuration API:
    • Introduced JsonMapperPrototype to provide a standardized way to build “boot-like” mappers.
    • Added LimeJacksonJsonConfiguration which provides a @ConditionalOnMissingBean fallback for JsonMapper.
  • Behavioral Adjustments: Disabled FAIL_ON_NULL_FOR_PRIMITIVES by default to maintain “sane” behavior across the library’s typical use cases.

3. Testing and Validation Enhancements

  • New Validation Support: Introduced ValidationSupport and ValidationSupportConfiguration in test-utilities. This provides a fluent API (hardValidate) for asserting that DTOs and Beans satisfy Jakarta Bean Validation constraints (e.g., @NotNull) during tests.
  • Test Refactoring: Factorized validation logic and cleaned up various unit tests to match the new library versions.

4. Infrastructure and Docker

  • LocalStack Reliability: Updated docker-compose.yml across multiple modules to fix timing failures during CI/CD.
    • Increased start_period for health checks from 1s to 30s.
    • Enhanced health check commands to verify multiple services (sqs, s3, sns) as they are started lazily in LocalStack.
    • Configured additional port ranges for LocalStack services.

5. External API Updates (GitHub)

  • GitHub API Migration: Updated the jcabi-github implementation in github-utilities.
    • Renamed usages of Github/RtGithub to GitHub/RtGitHub to match library changes.
    • Migrated from javax.json to jakarta.json namespaces for JSON processing within the GitHub integration.
  • Application Cleanup: Removed unused properties (like workflowRepositoryId) and added @SuppressWarnings for specific linting rules.

6. General Cleanup

  • Suppressed Javadoc missing warnings.
  • Removed unnecessary comments and usage of “ant export properties” in build configurations.
  • Corrected various Docker startup and timing issues that were causing flaky tests.

References