repository·master·Indexed 22 days ago
https://github.com/quickfix-j/quickfixjA complete Java implementation of the FIX (Financial Information eXchange) protocol engine supporting versions 4.0 through 5.0SP2 and FIXLatest. The project includes the core engine (quickfixj-core), foundational classes (quickfixj-base), and various message artifacts for different FIX specifications. It provides tools for custom builds, including a code generator Maven plugin and orchestration support for FIX Latest and FIX T1.1.
The quickfixj-core module contains the main QuickFIX/J FIX engine and its supporting capabilities. It is built upon the quickfixj-base module.
Crucially, quickfixj-core has a test dependency on generated message classes. This design choice is intended to facilitate easier customization of QuickFIX/J deployments by decoupling the core engine from specific message implementations during standard development.
quickfixj-messages-fix44 module provides the Java classes required to implement the FIX 4.4 specification. It contains the message and field definitions specific to version 4.4. Note that any FIX classes not defined in the 4.4 specification are pruned from this package during the build process.quickfixj-messages-fix41 module provides Java classes corresponding to the FIX 4.1 specification. It contains the message types and fields defined by that version of the protocol. Note that any FIX classes not present in the 4.1 specification are pruned from this package during the build process.FIX 4.2 specification. It contains the message and field classes required to implement a FIX 4.2 session. Note that any FIX classes not defined in the 4.2 specification have been pruned from this package.quickfixj-messages-fix43 module provides Java classes corresponding to the FIX 4.3 specification. These classes allow you to work with FIX 4.3 messages and fields within the QuickFIX/J framework. Note that any FIX classes not defined in the 4.3 specification are pruned from this package during the build process.The quickfixj-messages module provides reference artifacts for various FIX specification versions. It is organized into several modules to allow users to depend only on the specific FIX versions they need at runtime, rather than the entire suite.
quickfixj-messages-fixt11: FIX Transport Layer 1.1.quickfixj-messages-all: Generates and compiles classes for all FIX protocol major versions.quickfixj-messages-fixlatest: The most recent FIX specification.quickfixj-messages-fix50sp2, quickfixj-messages-fix50sp1, quickfixj-messages-fix50: FIX 5.0 variants.quickfixj-messages-fix44, quickfixj-messages-fix43, quickfixj-messages-fix42, quickfixj-messages-fix41, quickfixj-messages-fix40: Legacy FIX versions.Maps of quickfix.Fields.quickfix.Fields package is common across all versions.quickfixj-base. To avoid runtime class-loader conflicts, certain Standard Header and Trailer fields provided by quickfixj-base are removed from the generated code in other artifacts during assembly.quickfixj-orchestration module.This module provides the Java artifacts (JARs) containing the Messages, Components, and Fields specifically for the FIX 5.0 specification.
Note that in FIX versions 5.0 and later, the FIX Session layer is architecturally separated from the Application Message layer. To prevent class duplication and conflicts, the FIX Session layer classes are excluded from these specific artifacts. Instead, you should use the QuickFIX/J reference implementation's shared Session layer JAR as a dependency alongside these FIX 5.0 message artifacts.
quickfixj-messages-fix40 module provides Java classes specifically mapped to the FIX 4.0 specification. It contains the message and field definitions required to implement a FIX 4.0 session. Note that any FIX classes not defined in the 4.0 specification are pruned from this package to ensure strict adherence to the version.This module provides support for the FIX Orchestra standard by publishing a QuickFIX/J compatible FIX dictionary and a QuickFIX/J FIX "orchestration".
An "orchestration" is an implementation of a FIX Orchestra standard repository. This specific module depends on the FIX Latest standard orchestration published by the FIX Trading Community. It uses XSL transformations to clean the standard repository (removing problematic elements and updating CodeSet names) to ensure compatibility with the QuickFIX/J build process.
The quickfixj-base module provides the foundational Java classes that all generated QuickFIX/J Fields, Components, and Messages depend on.
It specifically contains a small number of generated Fields required by the Standard Header and Standard Trailer. Because these fields are part of the core protocol structure, they are generated and compiled within this module to ensure they are available in the resulting JAR artifact.
Important for Compatibility: To ensure Java runtime compatibility, do not include these specific core Fields in other QuickFIX/J or custom artifacts. They are intended to be provided solely by the quickfixj-base module.
Use the following comparison to decide which QuickFIX/J component to instantiate based on your requirements:
| Feature | SocketAcceptor / SocketInitiator |
|---|---|
| Message processing | Single shared thread |
| Application thread-safety required | No |
| Session isolation | No |
| Typical use case | Few sessions, simple apps |
| Feature | ThreadedSocketAcceptor / ThreadedSocketInitiator |
|---|---|
| Message processing | One thread per session |
| Application thread-safety required | Yes |
| Session isolation | Yes |
| Typical use case | Many sessions, independent processing |