The High-Performance Java Persistence book and video course code examples. I wrote this article about this repository since it's one of the best way to test JDBC, JPA, Hibernate or even jOOQ code. Or, if you prefer videos, you can watch this presentation on YouTube.
I could help you get the most out of your data access layer.
If you are interested in on-site training, I can offer you my High-Performance Java Persistence training which can be adapted to one, two or three days of sessions. For more details, check out my website.
If you want me to review your application and provide insight into how you can optimize it to run faster, then check out my consulting page.
If you want the fastest way to learn how to speed up a Java database application, then you should definitely enroll in my High-Performance Java Persistence video courses.
Or, if you prefer reading books, you are going to love my High-Performance Java Persistence book as well.
All examples require at least Java 1.8.
Javac compiler is required in order to run in in any IDE environment.
Especially if you're using Eclipse, you must use the Oracle JDK compiler and not the Eclipse-based one which suffers from this issue.
On IntelliJ IDEA, the project runs just fine without any further requirements.
However, on Eclipse it has been reported that you need to consider the following configurations (many thanks to Urs Joss for the hints):
- Eclipse does not automatically treat the generated sources by jpamodelgen as source folders. You need to add a dependency on
hibernate-jpamodelgen
and use thebuild-helper-maven-plugin
to source the folders with the generated sources. - Secondly, the Maven eclipse plugin e2m seems to have an issue with some plugin configurations. Make sure you configure e2m to ignore the false positives issues (the project runs justs fine from a Maven command line).
- There’s an issue with Eclipse (or probably more specific ecj) to infer the types of parameters in case of method overloading with the methods
doInJpa
,doInHibernate
,doInJdbc
. Until this Eclipse issue is fixed, you need to use the Oracle JDK to compile the project. If you can't change that, you need to rename those overloaded functions as explained by Urs Joss in this specific commit.
The Integration Tests require some external configurations:
-
PostgreSQL
You should install PostgreSQL 9.5 (or later) and the password for the
postgres
user should beadmin
.Now you need to create a
high_performance_java_persistence
database. -
Oracle
You need to download and install Oracle XE
Set the
sys
password toadmin
Connect to Oracle using the "sys as sysdba" user and create a new user:
alter session set "_ORACLE_SCRIPT"=true; create user oracle identified by admin default tablespace users; grant dba to oracle; alter system set processes=1000 scope=spfile; alter system set sessions=1000 scope=spfile; ALTER PROFILE DEFAULT LIMIT PASSWORD_LIFE_TIME UNLIMITED;
For the Oracle JDBC driver, you have multiple alternatives.
-
You can follow the steps explained in this article to set up the Oracle Maven Repository.
-
You can also download the Oracle JDBC Driver (ojdbc7_g.jar and ojdbc8.jar), which is not available in the Maven Central Repository. and install the ojdbc7_g.jar and ojdbc8.jar on your local Maven repository using the following command:
$ mvn install:install-file -Dfile=ojdbc8.jar -DgroupId=com.oracle.jdbc -DartifactId=ojdbc8 -Dversion=12.2.0.1 -Dpackaging=jar $ mvn install:install-file -Dfile=ojdbc7_g.jar -DgroupId=com.oracle -DartifactId=ojdbc7_g -Dversion=12.1.0.1 -Dpackaging=jar
The
com.oracle:ojdbc7_g
artifact is used just by the jooq-oracle sub-module since there is some issue with the sql-maven-plugin Oracle dependency otherwise. -
-
MySQL
You should install MySQL 5.6 (or later) and the password for the
mysql
user should beadmin
.Now you need to create a
high_performance_java_persistence
schemaBesides having all privileges on this schema, the user mysql also requires select permission on
mysql.PROC
.Exact instructions can be found in here.
-
SQL Server
You should install SQL Server Express Edition with Tools. Chose mixed mode authentication and set the
sa
user password toadm1n
.Open SQL Server Configuration Manager -> SQL Server Network Configuration and enable Named Pipes and TCP
In the right pane of the TCP/IP option, choose Properties, then IP Addresses and make sure you Enable all listed IP addresses. You need to blank the dynamic TCP port value and configure the static TCP port 1433 for all IPs.
Open SQL Server Management Studio and create the
high_performance_java_persistence
database
To build the project, don't use install or package. Instead, just compile test classes like this:
mvn clean test-compile
Then, just pick one test from the IDE and run it individually.
Don't you run all tests at once (e.g. mvn clean test
) because the test suite will take a long time to complete, and some tests will fail because the Bitronix config is cached by Spring. Therefore, just run tests individually, as that's how they were designed to be run.