markstein

Start with INSTANCE
The first initialization was wrong with this ErrorMessage: 
java.lang.ExceptionInInitializerError

The error message by every next acces:
The first initialization was wrong with this ErrorMessage: 
  at de.mosst.spielwiese.no_class_def_found_error.Tester.main(Tester.java:9)
Caused by: java.lang.RuntimeException: RuntimeException by instance with field
	at de.mosst.spielwiese.no_class_def_found_error.SingeltonClass_with_INSTANCE_as_field.<init>(SingeltonClass_with_INSTANCE_as_field.java:8)
	at de.mosst.spielwiese.no_class_def_found_error.SingeltonClass_with_INSTANCE_as_field.<clinit>(SingeltonClass_with_INSTANCE_as_field.java:5)

markstein

package de.mosst.spielwiese.no_class_def_found_error;

import java.util.logging.Logger;

@SuppressWarnings("unused")
public class Tester {

    public static void main(String[] args) {
        System.out.println("Start with INSTANCE");
        try {

markstein

package de.mosst.spielwiese.no_class_def_found_error;

public class SingeltonClass_with_INSTANCE_as_field {
  
	public static SingeltonClass_with_INSTANCE_as_field INSTANCE = new SingeltonClass_with_INSTANCE_as_field();
	
	private SingeltonClass_with_INSTANCE_as_field() {
		throw new RuntimeException("RuntimeException by instance with field");
    }

markstein

package de.mosst.spielwiese.no_class_def_found_error;

public class SingeltonClass_with_getInstanceO_Method {

  private static SingeltonClass_with_getInstanceO_Method INSTANCE;
	
	private SingeltonClass_with_getInstanceO_Method() {
		throw new RuntimeException("RuntimeException by instance with getInstanceO_Method");
    }
	

markstein

apply plugin: 'java'

repositories {
    mavenCentral()
    mavenRepo urls: "http://repository.jboss.org/nexus/content/groups/public/"
}

dependencies {
    compile 'org.jboss.resteasy:resteasy-jaxrs:2.3.5.Final'
}

markstein

public class SausageServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        try {
            
            Context initCtx = new InitialContext();
            Context envCtx = (Context) initCtx.lookup("java:comp/env");
            DataSource ds = (DataSource) envCtx.lookup("jdbc/SausageDB");

markstein

portal-dependency-jars=\
    jstl-api.jar,\
    jstl-impl.jar
portal-dependency-tlds=\
    c.tld

markstein

import groovy.sql.Sql  
   
Sql liferayDB = Sql.newInstance("jdbc:mysql://localhost:3306/liferay", "user1", "pass1", "com.mysql.jdbc.Driver")  
Sql statisticsDB = Sql.newInstance("jdbc:mysql://localhost:3306/statistics", "user2", "pass2", "com.mysql.jdbc.Driver")  
    
firstRow = tugetherDB.firstRow("SELECT count(*) as anzahl FROM User_ WHERE loginDate > (NOW() - INTERVAL 1 HOUR)")  
statisticsDB.execute("INSERT INTO loginsPerHour (zeit, useranzahl) VALUES (NOW(), $firstRow.anzahl)")  

markstein

<?xml version="1.0"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">

	<category name="com.liferay.portal">
		<priority value="ERROR" />
	</category>

	<category name="my.portlet.soccer">