trueanone / simple-example

ActiveJDBC example project with Apache Maven

ActiveJDBC example showing Many-To-Many

This example shows a typical usage of ActiveJDBC in a Many-to-Many relationship where a join table is also used to record some metadata for each relationship

Usage:

• Adjust your database connection parameters in file:

    src/main/resources/database.properties

• Execute database migrations:

    mvn db-migrator:create
    mvn db-migrator:migrate

• Build program:

    mvn clean install

• Execute:

# this will collect all dependencies under target dir.
mvn dependency:unpack-dependencies

# Execute the program from command line:
# Linux:
java -classpath target/dependency:target/classes activejdbc.examples.simple.Main
# Windows:
java -classpath target\dependency;target\classes activejdbc.examples.simple.Main 

# Same with ActiveJDBC logging turned on:
java -classpath target/dependency:target/classes -Dactivejdbc.log activejdbc.examples.simple.Main

• Examine the output:

Line similar to this at the end:

Model: activejdbc.examples.simple.Movie, table: 'movies', attributes: {id=1, title=Saving private Ryan, year=1998}
Model: activejdbc.examples.simple.Movie, table: 'movies', attributes: {id=2, title=Jaws, year=1982}

Instrumentation

If you run this example from an IDE, you will need to instrument models before running. Here is how:

mvn process-classes

another way of doing the same is:

mvn activejdbc-instrumentation:instrument