WildFly Class Loading: Difference between revisions
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Migrating from https://home.feodorov.com:9443/wiki/Wiki.jsp?page=JBoss7ClassLoading
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# '''User Dependencies''' - these are the dependencies that are added through <tt>[[jboss-deployment-structure.xml]]</tt>, through the <tt>Dependencies:</tt> manifest entry for modules or through <tt>Class-Path:</tt> for JAR files. | # '''User Dependencies''' - these are the dependencies that are added through <tt>[[jboss-deployment-structure.xml]]</tt>, through the <tt>Dependencies:</tt> manifest entry for modules or through <tt>Class-Path:</tt> for JAR files. | ||
# '''Local Resources''' - class files packaged inside the deployment itself (example, classes from <tt>WEB-INF/classes</tt> or <tt>WEB-INF/lib</tt> in a WAR file. | # '''Local Resources''' - class files packaged inside the deployment itself (example, classes from <tt>WEB-INF/classes</tt> or <tt>WEB-INF/lib</tt> in a WAR file. | ||
# ''Inter-Deployment Dependencies''' - dependencies on other deployments in an EAR deployment. This can include classes in an EAR's <tt>lib</tt> directory or classes defined in other EJB JARs. | # '''Inter-Deployment Dependencies''' - dependencies on other deployments in an EAR deployment. This can include classes in an EAR's <tt>lib</tt> directory or classes defined in other EJB JARs. | ||
Revision as of 20:25, 10 March 2016
External
- Class Loading in AS7 https://docs.jboss.org/author/display/AS7/Class+Loading+in+AS7
Internal
Overview
WildFly class loading relies on modules that have to define explicit dependencies on other modules. This model is different from the previous EAP 5 hierarchical class loading model.
Class Loading Precedence
WildFly adds module dependencies for a JEE deployment in a very specific order, starting from the highest priority to the lowest priority:
- System Dependencies - these are the dependencies that are automatically added by the container. For more details see automatic dependencies.
- User Dependencies - these are the dependencies that are added through jboss-deployment-structure.xml, through the Dependencies: manifest entry for modules or through Class-Path: for JAR files.
- Local Resources - class files packaged inside the deployment itself (example, classes from WEB-INF/classes or WEB-INF/lib in a WAR file.
- Inter-Deployment Dependencies - dependencies on other deployments in an EAR deployment. This can include classes in an EAR's lib directory or classes defined in other EJB JARs.