Whenever an app provides public information about entities, such
as the books available in a public library, it is desirable to publish
this information with the help of self-descriptive resource URLs, such
as http://publiclibrary.norfolk.city/books/006251587X,
which would be the resource URL for retrieving information about the
book "Weaving the Web" available in the public library of Norfolk.
However, resource URLs are not supported by JSF. In the Java world, we
would have to use JAX-RS, instead of JSF, for programming a web API with
resource URLs. But this would imply that we need to take care of the
front-end UI in a different way, since JAX-RS is a pure back-end API,
not providing any support for building user interfaces. A natural option
would be to use a JavaScript front-end framework, such as BackboneJS or
ReactJS, for rendering the UI.
Instead of MySQL, one can use various other database management systems for persistent storage. The following four steps are required to specify the used DBMS (only one DBMS at a time is possible):
Configure TomEE so it uses the corresponding resource for
your application. For a list of resource configuration examples
used for common DBMS's, check Common
DataSource Configurations. For example, if PostgreSQL was chosen as DBMS, then edit
the conf/tomee.xml file and add the following
code:
<Resource id="application-persistence-unit-name" type="DataSource"> JdbcDriver org.postgresql.Driver JdbcUrl jdbc:postgresql://host/database-name UserName dbms-username Password user-password </Resource>
Copy the jar file
corresponding to the DBMS driver implementation to the
lib folder. After this, the TomEE server
needs to be restarted.
Install the DBMS, if not already installed. Installation instructions are usually available on the corresponding DBMS web page.
Create the corresponding DBMS user and database to be used for your application.