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December 12, 2012 - Habarisoft today released version 1.5 of Habari Client for RabbitMQ, a library which provides easy access to RabbitMQ, the open source messaging system. Habari Client libraries provide acces to production-ready and industry standard based cross-platform application integration, using the peer-to-peer or the publish/subscribe communication model. The main new feature introduced in … Continue reading Habari Client for RabbitMQ 1.5 released
What is a temporary queue? Temporary queues are destinations with a scope limited to the connection that created it, and are removed on the server side as soon as the connection is closed. They are typically used for synchronous messaging (request/reply communication model). Their main advantage is that no queue management to provide unique destination … Continue reading Temporary queue support in Habari Client libraries
Firebird developers can use Firebird events to notify clients about changes in database record data. In the previous post, I showed and discussed some limitations of Firebird events. This post presents a solution based on message-oriented middleware. The solutions in the first post used server-side logic in the Firebird database metadata, implemented with Firebird's procedural … Continue reading Firebird Database Events and Message-oriented Middleware (part 2)
Firebird developers can use Firebird events to notify clients about changes in database record data. In this article, I will show and discuss some limitations of Firebird events and compare possible workarounds with a solution based on message-oriented middleware.How should I implement "server push" for new data, instead of "client pull"?For this article we assume … Continue reading Firebird Database Events and Message-oriented Middleware (part 1)
The STOMP 1.2 specification has been released today. STOMP 1.2 is mostly backwards compatible with STOMP 1.1. There are only two incompatible changes, which affect frame line endings and message acknowledgment. Apart from these, STOMP 1.2 introduces no new features but focuses on clarifying some areas of the specification. STOMP is a platform-independent protocol used … Continue reading STOMP Protocol Specification, Version 1.2 released
Habarisoft is pleased to announce the release of ScroogeXHTML 6.3, a fast RTF to HTML / XHTML converter library for Delphi and Free Pascal. This is mainly a bug fix release, and adds support for aligned list items (right, centered, justified). A demo version, the "Getting Started" guide (PDF) and the complete API documentation is … Continue reading ScroogeXHTML 6.3 – fast RTF to HTML / XHTML converter
A minor version update of Habari Client libraries is available. It includes a fix for the Synapse communication adapter which was introduced in the last major release. Registered users can download these new versions from the download area: Habari Client for ActiveMQ 3.2.2 Habari Client for Apollo 1.2.2 Habari Client for HornetQ 1.8.2 Habari Client … Continue reading Habari Client Libraries for Delphi and Free Pascal – minor updates released
September 12, 2012 - Habarisoft today released version 3.2 of Habari Client for ActiveMQ, a library which provides access to Apache ActiveMQ, the open source messaging system. With this library, Delphi and Free Pascal developers can build integrated solutions, using the peer-to-peer or the publish and subscribe communication model. ActiveMQ is also the default Java … Continue reading Habari Client for ActiveMQ 3.2 released
Log4D is a log framework based on the popular Java logging framework Log4J. An article on CodeCentral described the general architecture: "It is a port of the log4j Java package to Delphi - runtime configurable logging with a hierarchy of categories, each individually controllable. Categories form the basis of the hierarchy, logging messages sent to … Continue reading Delphi and Free Pascal logging with the Log4D library
Note: an update of this article has been posted here. This article shows how Delphi can use IP multicast to find Apache ActiveMQ message brokers in the local network. With the code below, a Delphi application can list all ActiveMQ brokers, see their status, and get their IP address. This allows for dynamic configuration of … Continue reading Discover ActiveMQ brokers with Delphi and IP Multicast