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Commit 6d8777e1 authored by Goik Martin's avatar Goik Martin
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Dynamic JDBC driver loading demo

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Doc/DbDevel/Snippets/JdbcDynDriver/lib/mariadb-java-client-2.7.4.jar 0 → 100644
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Doc/DbDevel/Snippets/JdbcDynDriver/pom.xml 0 → 100644
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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.de</groupId>
<artifactId>jdbcdyndriver</artifactId>
<version>0.9</version>
<packaging>jar</packaging>
<name>jdbcdyndriver</name>
<url>https://freedocs.mi.hdm-stuttgart.de/sd1_sect_mavenCli.html</url>
<description>Basic Java project providing Junit 4 testing and log4j2 logging.</description>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.19.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.10.1</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<!-- Starting from 3.3.1 generated filenames no longer show up on terminal output -->
<version>3.3.0</version>
<configuration>
<linksource>true</linksource>
<detectJavaApiLink>false</detectJavaApiLink>
<additionalOptions>
<additionalOption>-html5 --allow-script-in-comments</additionalOption>
</additionalOptions>
<nohelp>true</nohelp>
<header><![CDATA[
<script type="text/javascript"
src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@10.5.0/build/styles/idea.min.css">
<script src="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@10.5.0/build/highlight.js"></script>
<script type="text/javascript">hljs.initHighlightingOnLoad();</script>]]>
</header>
<javadocExecutable>${java.home}/bin/javadoc</javadocExecutable>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.4.1</version>
<configuration>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<manifestEntries>
<Main-Class>de.hdm_stuttgart.de.DynDriverTest</Main-Class>
<Multi-Release>true</Multi-Release>
</manifestEntries>
</transformer>
</transformers>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<!-- Avoiding 'overlapping resources' problems -->
<configuration>
<filters>
<filter>
<artifact>org.apache.logging.log4j:*</artifact>
<excludes>
<exclude>META-INF/*</exclude>
</excludes>
</filter>
</filters>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.12.1</version>
</plugin>
</plugins>
</build>
</project>
Doc/DbDevel/Snippets/JdbcDynDriver/src/main/java/de/hdm_stuttgart/de/DynDriverTest.java 0 → 100644
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package de.hdm_stuttgart.de;
import java.io.File;
import java.net.URL;
import java.net.URLClassLoader;
import java.sql.*;
import java.util.Properties;
/**
* Demonstrating dynamic JDBC Driver loading from file system based jar archive
*/
public class DynDriverTest {
public static void main(String[] args) {
try {
final URL[] urlList = {new File("lib/mariadb-java-client-2.7.4.jar").toURI().toURL()};
final ClassLoader classLoader = new URLClassLoader(urlList);
final Class<?> driverClassDesc = Class.forName("org.mariadb.jdbc.Driver",true,classLoader);
final Driver driver = (Driver) driverClassDesc.getDeclaredConstructor().newInstance();
final Properties prop = new Properties();
prop.setProperty("user","root");
prop.setProperty("password" ,"secret");
final Connection conn = driver.connect("jdbc:mysql://127.0.0.1/mysql", prop);
final ResultSet r = conn.createStatement().executeQuery("SELECT * from user");
while (r.next()) {
System.out.println(r.getString("user"));
}
}
catch (Exception e) {System.out.println(e.getMessage());
}
}
}
Doc/DbDevel/Snippets/JdbcDynDriver/src/main/resources/log4j2.xml 0 → 100644
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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 my want to define class or package level per-logger rules -->
<Logger name="de.hdm_stuttgart.de.App" level="debug">
<AppenderRef ref="A1"/>
</Logger>
<Root level="info">
<AppenderRef ref="STDOUT"/>
</Root>
</Loggers>
</Configuration>
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