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Commit 87fad754 authored by Goik Martin's avatar Goik Martin
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Demo StudyCourse Project

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Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/.gitignore 0 → 100644
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/target/
/.settings/
.classpath
.project
# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
# User-specific stuff:
.idea/**/workspace.xml
.idea/**/tasks.xml
.idea/dictionaries
# Sensitive or high-churn files:
.idea/**/dataSources/
.idea/**/dataSources.ids
.idea/**/dataSources.xml
.idea/**/dataSources.local.xml
.idea/**/sqlDataSources.xml
.idea/**/dynamic.xml
.idea/**/uiDesigner.xml
# Gradle:
.idea/**/gradle.xml
.idea/**/libraries
# CMake
cmake-build-debug/
# Mongo Explorer plugin:
.idea/**/mongoSettings.xml
## File-based project format:
*.iws
## Plugin-specific files:
# IntelliJ
out/
# mpeltonen/sbt-idea plugin
.idea_modules/
# JIRA plugin
atlassian-ide-plugin.xml
# Cursive Clojure plugin
.idea/replstate.xml
# Crashlytics plugin (for Android Studio and IntelliJ)
com_crashlytics_export_strings.xml
crashlytics.properties
crashlytics-build.properties
fabric.properties
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Hibernate JPA 2 project template
================================
Usage:
------
A basic JPA CRUD example
General:
--------
This project contains:
* `src/main/resources/META-INF/persistence.xml`
Two persistence units offering a »drop-and-create«
(re-creating schema) and a »strategy_none« (don't touch)JDBC database
connection to a Mysql 5 server. You may want to adjust both database
type and connection parameters.
* Important classes (package root `de.hdm_stuttgart.mi.sda1` omitted
for brevity):
|File / Class |Description |
|--------------------------|-------------------------------------------|
|`...model.StudyCourse` |Class representing study courses |
|`...CreateStudyCourse` |Persisting a study course |
|`...ReadStudyCourseById` |Retrieving a study course database instance by primary key |
* `src/main/resources/log4j2.xml` Configuring the log4j subsystem.
On executing i.e. »`mvn install`« Maven will
[generate]
(https://docs.jboss.org/hibernate/orm/current/topical/html_single/metamodelgen/MetamodelGenerator.html)
metamodel classes like `StudyCourse_.java` during the
»`generate-sources`« phase. These classes are being required for
[typesafe criteria based queries]
(http://docs.jboss.org/hibernate/entitymanager/3.6/reference/en/html/querycriteria.html#querycriteria-typedquery)
not being used in this project.
Targets:
--------
* `mvn test`
Creating and re-reading a database instance of `StudyCourse`.
Connection parameters being defined twice in two persistence units in
`src/main/resources/META-INF/persistence.xml`.
* `mvn package`
Creating an executable jar persisting an `StudyCourse` instance to be
run like e.g.:
java -jar target/intro-1.0.jar
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>de.hdm_stuttgart.mi.sda1</groupId>
<artifactId>studycourse_basic</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<name>studycourse_basic</name>
<url>http://www.mi.hdm-stuttgart.de/freedocs/topic/de.hdm_stuttgart.mi.lectures/sd1SectUsingMaven.html</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.2.12.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>6.0.6</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.10.0</version>
</dependency>
<!-- Required for executable jar generation to avoid ClassNotFoundException:
com.fasterxml.jackson.core.type.TypeReference and similar dependency problems. -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.3</version>
</dependency>
<!--
https://stackoverflow.com/questions/27412287/junit-tests-fail-with-java-error-when-using-intellij-within-maven-module-after-a#answer-34374834
-->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-jpamodelgen</artifactId>
<version>5.2.12.Final</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<compilerArgument>-proc:none</compilerArgument>
</configuration>
</plugin>
<plugin>
<groupId>org.bsc.maven</groupId>
<artifactId>maven-processor-plugin</artifactId>
<version>3.2.0</version>
<executions>
<execution>
<id>process</id>
<goals>
<goal>process</goal>
</goals>
<phase>generate-sources</phase>
<configuration>
<outputDirectory>${project.build.directory}/metamodel</outputDirectory>
<processors>
<processor>org.hibernate.jpamodelgen.JPAMetaModelEntityProcessor</processor>
</processors>
</configuration>
</execution>
</executions>
</plugin>
<!-- Build helper plugin to add generated sources to classpath -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>3.0.0</version>
<executions>
<execution>
<id>add-source</id>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>${project.build.directory}/metamodel</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>3.0.0</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.1.0</version>
<configuration>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<manifestEntries>
<Main-Class>de.hdm_stuttgart.mi.sda1.CreateStudyCourse</Main-Class>
</manifestEntries>
</transformer>
</transformers>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/CreateStudyCourse.java 0 → 100644
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package de.hdm_stuttgart.mi.sda1;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import de.hdm_stuttgart.mi.sda1.model.StudyCourse;
/**
* Create a transient {@link StudyCourse} instance and persist it to the database.
*/
public class CreateStudyCourse {
static private final Logger log = LogManager.getLogger(CreateStudyCourse.class);
/**
* @param args Unused
*/
public static void main( String[] args ) {
final EntityManagerFactory factory = Persistence.createEntityManagerFactory(
"strategy_drop-and-create");
final EntityManager em = factory.createEntityManager();
log.info("Begin transaction");
final EntityTransaction tx = em.getTransaction();
tx.begin();
final StudyCourse csm = new StudyCourse(
"CSM", "Computer Science an Media");
em.persist(csm);
tx.commit();
log.info("Committed transaction");
// See http://stackoverflow.com/questions/21645516/program-using-hibernate-does-not-terminate
factory.close();
}
}
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Doc/Sda1/Ref/JpaIntro/P/StudyCourse_basic/src/main/java/de/hdm_stuttgart/mi/sda1/ReadStudyCourseById.java 0 → 100644
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package de.hdm_stuttgart.mi.sda1;
import de.hdm_stuttgart.mi.sda1.model.StudyCourse;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;
/**
* Read a {@link StudyCourse} by its primary key value.
*/
public class ReadStudyCourseById {
/**
* @param args unused
*/
public static void main( String[] args ) {
final EntityManagerFactory factory = Persistence.createEntityManagerFactory(
"strategy_none");
final EntityManager em = factory.createEntityManager();
final EntityTransaction tx = em.getTransaction();
final StudyCourse studyCourse;
tx.begin();
studyCourse = em.find(StudyCourse.class, "CSM");
tx.commit();
System.out.println("Read + '" + studyCourse + "'");
// See http://stackoverflow.com/questions/21645516/program-using-hibernate-does-not-terminate
factory.close();
}
}
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<persistence
version="2.1"
xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<!--
The <code>persistence.xml</code> file configures at least one persistence unit;
each unit must have a unique name.
-->
<persistence-unit name = "strategy_drop-and-create">
<!--
Hibernate will scan your classpath for mapped classes and add them automatically
to your persistence unit.
-->
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<!--
setting the previous option "exclude-unlisted-classes" to 'true' requires entity classes to
be listed explicitely. You may want to uncomment the following definition and add more classes.
<class>sda1.Airline</class>
-->
<!--
Standard or vendor-specific options can be set as properties on a persistence unit.
Any standard properties have the <code>javax.persistence</code> name prefix, Hibernate's
settings use <code>hibernate</code>
-->
<properties>
<!--
JDBC database connection parameter
-->
<property name = "javax.persistence.jdbc.driver" value="com.mysql.cj.jdbc.Driver"/>
<property name = "javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/hdm?useSSL=false"/>
<property name = "javax.persistence.jdbc.user" value="hdmuser"/>
<property name = "javax.persistence.jdbc.password" value="XYZ"/>
<!--
The JPA engine should drop and re-create the SQL schema in the database
automatically when it boots. This is ideal for automated testing, when
you want to work with a clean database for every test run.
-->
<property
name = "javax.persistence.schema-generation.database.action"
value="drop-and-create"/>
<!--
When printing SQL in logs, let Hibernate format the SQL nicely and generate
comments into the SQL string so we know why Hibernate executed the SQL statement.
-->
<property name = "hibernate.show_sql" value = "true" />
<property name = "hibernate.format_sql" value="true"/>
<property name = "hibernate.use_sql_comments" value="true"/>
<!-- Choose Mysql. Set »innodb« backend by system property -->
<property name = "hibernate.dialect" value="org.hibernate.dialect.MySQL57Dialect" />
<!-- Enable Hibernate scanning for entity classes and adding them automatically
but not for hbm.xml files. -->
<property name = "hibernate.archive.autodetection" value="class"/>
</properties>
</persistence-unit>
<!-- The subsequent persistence unit won't modify the database's schema
javax.persistence.schema-generation.database.action=none
-->
<persistence-unit name = "strategy_none">
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name = "javax.persistence.jdbc.driver" value="com.mysql.cj.jdbc.Driver"/>
<property name = "javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/hdm?useSSL=false"/>
<property name = "javax.persistence.jdbc.user" value="hdmuser"/>
<property name = "javax.persistence.jdbc.password" value="XYZ"/>
<property
name = "javax.persistence.schema-generation.database.action"
value="none"/>
<property name = "hibernate.show_sql" value = "false" />
<property name = "hibernate.format_sql" value="true"/>
<property name = "hibernate.use_sql_comments" value="true"/>
<property name = "hibernate.dialect.storage_engine" value="innodb" />
<property name = "hibernate.archive.autodetection" value="class"/>
</properties>
</persistence-unit>
</persistence>
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<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
<Appenders>
<File name="A1" fileName="A1.log" append="false">
<PatternLayout pattern="%t %-5p %c{2} - %m%n"/>
</File>
<Console name="STDOUT" target="SYSTEM_OUT">
<PatternLayout pattern="%d %-5p [%t] %C{2} (%F:%L) - %m%n"/>
</Console>
</Appenders>
<Loggers>
<!-- You may want to enable more detailed hibernate logging -->
<Logger name="org.hibernate" level="info">
<AppenderRef ref="A1"/>
</Logger>
<Root level="info">
<AppenderRef ref="STDOUT"/>
</Root>
</Loggers>
</Configuration>
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