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‎README.md

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# groovy-cli-gradle-hibernate-cockroachdb-single-node-without-ssl-simple
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## Description
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Creates a small database table
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called `dog` and populates with
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hql.
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A groovy gradle build, that connects to single node
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cockroach database without ssl.
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## Tech stack
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- groovy
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- gradle
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- hibernate
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- hql
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- log4j
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- postgres drivers
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## Docker stack
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- cockroachdb/cockroach:v19.2.2
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- gradle:jdk11
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## To run
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`sudo ./install.sh -u`
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- [webui](http://localhost:8080)
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## To stop
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`sudo ./install.sh -d`
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## For help
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`sudo ./install.sh -h`
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## Credit
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- [HQL code based on](https://www.journaldev.com/2954/hibernate-query-language-hql-example-tutorial)
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- [Hibernate config based on](https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/An-example-hibernatecfgxml-for-MySQL-8-and-Hibernate-5)
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- [Hibernate code based on](https://github.com/lokeshgupta1981/hibernate/tree/master/hibernate-hello-world)

‎docker-compose.yml

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version: '3'
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services:
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java-srv:
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build:
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context: java-srv
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command: /bin/sh -c "/wait && gradle run"
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environment:
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- WAIT_HOSTS=db:26257
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- WAIT_HOSTS_TIMEOUT=300
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- WAIT_SLEEP_INTERVAL=30
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- WAIT_HOST_CONNECT_TIMEOUT=30
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depends_on:
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- db
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links:
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- "db:db"
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db:
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image: cockroachdb/cockroach:v19.2.2
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ports:
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- "26257:26257"
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- "8080:8080"
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command: start-single-node --insecure

‎general.log

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[2023-09-28 13:09:56 INFO]: install::setup-logging ended
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================
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[2023-09-28 13:09:56 INFO]: install::start-up started
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[2023-09-28 13:09:56 INFO]: install::start-up starting services
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[2023-09-28 13:09:56 INFO]: install::start-up ended
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================

‎install.sh

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#!/usr/bin/env bash
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basefile="install"
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logfile="general.log"
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timestamp=`date '+%Y-%m-%d %H:%M:%S'`
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if [ "$#" -ne 1 ]; then
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msg="[ERROR]: $basefile failed to receive enough args"
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echo "$msg"
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echo "$msg" >> $logfile
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exit 1
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fi
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function setup-logging(){
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scope="setup-logging"
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info_base="[$timestamp INFO]: $basefile::$scope"
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echo "$info_base started" >> $logfile
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echo "$info_base removing old logs" >> $logfile
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rm -f $logfile
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echo "$info_base ended" >> $logfile
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echo "================" >> $logfile
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}
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function root-check(){
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scope="root-check"
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info_base="[$timestamp INFO]: $basefile::$scope"
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echo "$info_base started" >> $logfile
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#Make sure the script is running as root.
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if [ "$UID" -ne "0" ]; then
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echo "[$timestamp ERROR]: $basefile::$scope you must be root to run $0" >> $logfile
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echo "==================" >> $logfile
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echo "You must be root to run $0. Try the following"
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echo "sudo $0"
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exit 1
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fi
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echo "$info_base ended" >> $logfile
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echo "================" >> $logfile
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}
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function docker-check() {
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scope="docker-check"
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info_base="[$timestamp INFO]: $basefile::$scope"
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cmd=`docker -v`
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echo "$info_base started" >> $logfile
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if [ -z "$cmd" ]; then
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echo "$info_base docker not installed"
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echo "$info_base docker not installed" >> $logfile
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fi
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echo "$info_base ended" >> $logfile
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echo "================" >> $logfile
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}
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function docker-compose-check() {
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scope="docker-compose-check"
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info_base="[$timestamp INFO]: $basefile::$scope"
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cmd=`docker-compose -v`
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echo "$info_base started" >> $logfile
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if [ -z "$cmd" ]; then
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echo "$info_base docker-compose not installed"
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echo "$info_base docker-compose not installed" >> $logfile
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fi
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echo "$info_base ended" >> $logfile
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echo "================" >> $logfile
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}
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function usage() {
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echo ""
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echo "Usage: "
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echo ""
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echo "-u: start."
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echo "-d: tear down."
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echo "-h: Display this help and exit."
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echo ""
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}
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function start-up(){
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local scope="start-up"
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local docker_img_name=`head -n 1 README.md | sed 's/# //'`
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local info_base="[$timestamp INFO]: $basefile::$scope"
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echo "$info_base started" >> $logfile
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echo "$info_base starting services" >> $logfile
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sudo docker-compose up --build
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echo "$info_base ended" >> $logfile
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echo "================" >> $logfile
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}
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function tear-down(){
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scope="tear-down"
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info_base="[$timestamp INFO]: $basefile::$scope"
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echo "$info_base started" >> $logfile
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echo "$info_base starting services" >> $logfile
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sudo docker-compose down
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echo "$info_base ended" >> $logfile
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echo "================" >> $logfile
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}
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root-check
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docker-check
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docker-compose-check
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while getopts ":udh" opts; do
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case $opts in
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u)
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setup-logging
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start-up ;;
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d)
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tear-down ;;
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h)
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usage
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exit 0 ;;
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/?)
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usage
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exit 1 ;;
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esac
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done

‎java-srv/Dockerfile

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FROM gradle:jdk11
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WORKDIR /app
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ADD --chown=gradle:gradle bin .
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ENV WAIT_VERSION 2.7.2
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ADD https://github.com/ufoscout/docker-compose-wait/releases/download/$WAIT_VERSION/wait /wait
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RUN chmod +x /wait
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CMD "gradle run"

‎java-srv/bin/build.gradle

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apply plugin: 'groovy'
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apply plugin: 'application'
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repositories {
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jcenter()
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mavenCentral()
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}
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sourceCompatibility = 11
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targetCompatibility = 11
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dependencies {
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implementation 'org.codehaus.groovy:groovy-all:3.0.7'
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implementation 'com.google.guava:guava:29.0-jre'
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implementation 'org.postgresql:postgresql:42.2.18'
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implementation 'org.hibernate:hibernate-core:5.4.23.Final'
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implementation 'jakarta.xml.bind:jakarta.xml.bind-api:2.3.3'
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implementation 'org.glassfish.jaxb:jaxb-runtime:2.3.3'
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implementation 'log4j:log4j:1.2.17'
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implementation 'org.slf4j:slf4j-api:1.7.5'
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implementation 'org.slf4j:slf4j-log4j12:1.7.5'
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}
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mainClassName = 'example.Main'

‎java-srv/bin/src/main/groovy/example/HibernateUtils.groovy

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package example;
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import org.hibernate.SessionFactory;
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import org.hibernate.boot.Metadata;
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import org.hibernate.boot.MetadataSources;
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import org.hibernate.boot.registry.StandardServiceRegistry;
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import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
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public class HibernateUtils {
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private static SessionFactory sessionFactory = buildSessionFactory();
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private static SessionFactory buildSessionFactory()
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{
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try
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{
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if (sessionFactory == null)
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{
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StandardServiceRegistry standardRegistry = new StandardServiceRegistryBuilder()
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.configure("hibernate.cfg.xml").build();
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Metadata metaData = new MetadataSources(standardRegistry)
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.getMetadataBuilder()
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.build();
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sessionFactory = metaData.getSessionFactoryBuilder().build();
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}
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return sessionFactory;
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} catch (Throwable ex) {
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throw new ExceptionInInitializerError(ex);
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}
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}
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public static SessionFactory getSessionFactory() {
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return sessionFactory;
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}
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public static void shutdown() {
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getSessionFactory().close();
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}
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}

‎java-srv/bin/src/main/groovy/example/Main.groovy

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package example;
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import example.model.Dog;
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public class Main {
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public static void main(String[] args) {
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org.hibernate.Session session = HibernateUtils.getSessionFactory().openSession();
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Dog tbl = new Dog(session);
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try {
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tbl.insert(1L, "Am Bulldog", "White");
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tbl.insert(2L, "Blue Tick", "Grey");
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tbl.insert(3L, "Labrador", "Black");
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tbl.insert(4L, "Gr Shepard", "Brown");
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} catch (Exception e) {}
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tbl.selectAll();
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HibernateUtils.shutdown();
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}
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}

‎java-srv/bin/src/main/groovy/example/entity/DogEntity.groovy

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package example.entity;
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import java.io.Serializable;
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import javax.persistence.Column;
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import javax.persistence.Entity;
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import javax.persistence.GeneratedValue;
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import javax.persistence.GenerationType;
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import javax.persistence.Id;
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import javax.persistence.Table;
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import javax.persistence.UniqueConstraint;
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import org.hibernate.annotations.OptimisticLockType;
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@Entity
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@Table(name = "dog")
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public class DogEntity {
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public DogEntity(long a, String b, String c)
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{
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id = a;
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color = b;
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breed = c;
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}
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@Id
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// @GeneratedValue(strategy = GenerationType.IDENTITY)
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@Column(name="id")
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private long id;
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@Column(name="color")
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private String color;
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@Column(name="breed")
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private String breed;
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// Accessors and mutators for all three fields
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public long getId(){ return id;}
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public String getColor(){ return color;}
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public void setColor(String value){color = value;}
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public String getBreed(){ return breed;}
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public void setBreed(String value){breed = value;}
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@Override
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public String toString(){
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return String.format("[OUTPUT] %d, breed=%s, color=%s", id, breed, color);
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}
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}

‎java-srv/bin/src/main/groovy/example/model/Dog.groovy

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package example.model;
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import org.hibernate.Query;
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import org.hibernate.Session;
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import java.util.List;
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import example.entity.DogEntity;
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public class Dog{
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Session session = null;
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public Dog(Session s){session = s;}
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public void insert(long id, String breed, String color) throws Exception {
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if (color == null)
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throw new Exception("must provide color");
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else if (breed == null)
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throw new Exception("must provide breed");
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session.beginTransaction();
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DogEntity dog = new DogEntity(id, color, breed);
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session.save(dog);
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session.getTransaction().commit();
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}
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public void selectAll(){
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String hql = "FROM DogEntity";
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Query query = session.createQuery(hql);
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List<DogEntity> lst = query.list();
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for (DogEntity entity : lst)
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System.out.println(entity.toString());
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}
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}

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