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java_examples

CDI 2.0 / weld SE example with parameterised events.

Also shows up how the annotation value is consumed by an interceptor with reflection. Simply run EventSenderTest.java as an unit-test.

SE Container JTA Example (uses SimpleJndi,Narayana,Eclipselink,H2)

Inspired by CDI_JTA_TESTING But there was no comparable JTA example with Eclipselink and SimpleJndi out there..

The entire glue logic needed is within the maven-module jta-cdi-helper.

A test-setup example can be found in the eclipselink-jta module under /transactionaltests: example_test The example project used here is only a quick artificial setup and does not demonstrate proper db modelling.

Setup: just write a junit5 extension by using one of the junit5 extensions in the module jta-cdi-helper. Just check the ExampleTestExtension.java how it's done. The extension is responsible for setup the needed resources.

implementation details

The H2EntityManagerFactoryProducer is responsible for overriding of some of the persistence.xml properties (for instance setting up the H2 database) - so you can test directly with the persistence.xml which is shipped to production (no need for a second copy under test/resources) The SeMemoryContext is responsible for the TransactionManager`s JNDI-Lookup (Narayana uses javax.naming.reference and SimpleJndi can't deal with that). All needed jndi-resources are configured within /transactionaltests/ExampleTestExtension.java

After the test you could dump the contents of the in-memory-database into a file for validation against a template.

Happy testing!

installation

I tested everything with Eclipse (4.13.0) - just import it as a maven project.

dependencies

  • java 8 SE
  • weld SE (3.1.2)
  • maven 3.6.3
  • junit 5
  • EclipseLink
  • Narayana Transaction Manager
  • SimpleJndi
  • H2 (in memory mode)