We explore how to manipulate databases in MQL5 using the language's native functions. We cover everything from table creation, insertion, updating, and deletion to data import and export, all with sample code. The content serves as a solid foundation for understanding the internal mechanics of data access, paving the way for the discussion of ORM, where we'll build one in MQL5.
We created a log suppression system in the Logify library. It details how the CLogifySuppression class reduces console noise by applying configurable rules to avoid repetitive or irrelevant messages. We also cover the external configuration framework, validation mechanisms, and comprehensive testing to ensure robustness and flexibility in log capture during bot or indicator development.
This article shows how to drastically simplify the use of the Logify library with the Builder pattern and automatic default configurations. It explains the structure of the specialized builders, how to use them with smart auto-completion, and how to ensure a functional log even without manual configuration. It also covers tweaks for MetaTrader 5 build 5100.
In this eighth installment of the Mastering Log Records series, we explore the implementation of multilingual error messages in Logify, a powerful logging library for MQL5. You’ll learn how to structure errors with context, translate messages into multiple languages, and dynamically format logs by severity level. All of this with a clean, extensible, and production-ready design.
Learn how to display logs directly on the MetaTrader chart in an organized way, with frames, titles and automatic scrolling. In this article, we show you how to create a visual log system using MQL5, ideal for monitoring what your robot is doing in real time.
This article explores the use of databases to store logs in a structured and scalable way. It covers fundamental concepts, essential operations, configuration and implementation of a database handler in MQL5. Finally, it validates the results and highlights the benefits of this approach for optimization and efficient monitoring.
This article improves the logging library by adding formatters in handlers, the CIntervalWatcher class to manage execution cycles, optimization with caching and file rotation, performance tests and practical examples. With these improvements, we ensure an efficient, scalable and adaptable logging system to different development scenarios.
In this article, I will teach you basic file operations and how to configure a flexible handler for customization. We will update the CLogifyHandlerFile class to write logs directly to the file. We will conduct a performance test by simulating a strategy on EURUSD for a week, generating logs at each tick, with a total time of 5 minutes and 11 seconds. The result will be compared in a future article, where we will implement a caching system to improve performance.
In this article, we will explore the concept of handlers in the logging library, understand how they work, and create three initial implementations: Console, Database, and File. We will cover everything from the basic structure of handlers to practical testing, preparing the ground for their full functionality in future articles.
In this article, we will explore how to create and apply log formatters in the library. We will see everything from the basic structure of a formatter to practical implementation examples. By the end, you will have the necessary knowledge to format logs within the library, and understand how everything works behind the scenes.
欢迎开启另一段探索之旅！本文是一个特别系列的开篇之作，我们将逐步创建一个专为MQL5语言开发者量身定制的日志操作库。
在本系列文章的最后一篇中，我们探讨了观察者模式（Observer Pattern） 在Connexus库中的实现，同时对文件路径和方法名进行了必要的重构优化。该系列文章完整地记录了Connexus库的开发过程——这是一个专为简化复杂应用中的HTTP通信而设计的工具库。
在本文中，我们将继续开发connexus库。在本章节中，我们将构建CHttpClient类，该类负责发送请求并接收指令。我们还将介绍模拟对象（mocks）的概念，让该库与WebRequest函数解耦，从而为用户提供更强大的灵活性。
在Connexus库系列文章的第六篇中，我们将聚焦于完整的HTTP请求，涵盖构成请求的各个组件。我们将创建一个表示整个请求的类，这将有助于将之前创建的各个类整合在一起。
在本文中，我们将了解HTTP方法和状态码，这是网络上客户端与服务器之间通信的两个非常重要的部分。了解每种方法的作用，可以让您更精确地发出请求，告知服务器您想要执行的操作，从而提高效率。
在本文中，我们探讨了HTTP请求中的正文概念，这对于发送诸如JSON和纯文本之类的数据至关重要。我们讨论并解释了如何正确地使用正文，并结合适当的头部信息。此外，我们还介绍了Connexus库中的ChttpBody类，它将简化对请求正文的处理。
我们继续开发Connexus库。在本章中，我们探讨HTTP协议中请求头的概念，解释它们是什么、它们的用途以及如何在请求中使用它们。我们将涵盖用于与API通信的主要头信息，并展示了如何在库中配置它们的实例。
本文探讨了HTTP协议的基础知识，涵盖了主要方法（GET、POST、PUT、DELETE）、状态码以及URL的结构。此外，还介绍了Conexus库的构建起点，以及CQueryParam和CURL类，这些类用于在HTTP请求中操作URL和查询参数。
本文是‘Connexus’库开发系列的开篇之作，旨在为MQL5环境下的HTTP请求提供便利支持。该项目的目的是为终端用户提供这个机会，并展示如何使用这个辅助库。我打算尽可能地简化，以便于学习，从而为进一步开发提供可能性。