gokepler’s gists

gokepler / App.java

Created October 22, 2025 10:34 — forked from thomasdarimont/App.java

Example for defining a refreshable Groovy Script in Spring Boot with Java Config - at least thats the current state of affairs :)

	package demo;

	import java.util.concurrent.TimeUnit;

	import org.springframework.aop.TargetSource;
	import org.springframework.aop.framework.ProxyFactory;
	import org.springframework.aop.support.DelegatingIntroductionInterceptor;
	import org.springframework.beans.factory.BeanFactory;
	import org.springframework.boot.SpringApplication;
	import org.springframework.boot.autoconfigure.SpringBootApplication;

gokepler / ExampleApp.java

Created September 24, 2025 11:14 — forked from thomasdarimont/ExampleApp.java

Example PoC for class based Projections with Spring Data Repositories

	package demo;

	import java.util.List;

	import javax.persistence.Entity;
	import javax.persistence.GeneratedValue;
	import javax.persistence.Id;

	import org.springframework.boot.CommandLineRunner;
	import org.springframework.boot.SpringApplication;

gokepler / AspectJProxyFactorySample.java

Created August 8, 2025 13:45 — forked from rponte/AspectJProxyFactorySample.java

Creating Spring AspectJ Proxy programmatically

	XuxuService service = new XuxuServiceImpl();
	RetryAndNotifyOnErrorAspect myaspect = new RetryAndNotifyOnErrorAspect();

	AspectJProxyFactory factory = new AspectJProxyFactory(service);
	factory.addAspect(myaspect);
	// factory.setProxyTargetClass(true); // if you're applying to a concrete class
	XuxuService proxy = factory.getProxy();

	// just run it
	proxy.execute();

gokepler / Asynchronous_Triggers_ServiceBroker_Example.sql

Created June 24, 2025 11:32 — forked from EitanBlumin/Asynchronous_Triggers_ServiceBroker_Example.sql

Asynchronous Triggers Using Service Broker (more info: https://eitanblumin.com/2018/10/31/advanced-service-broker-sample-asynchronous-triggers/ )

	USE AdventureWorks2008R2
	GO
	SET ANSI_NULLS ON
	GO
	SET QUOTED_IDENTIFIER ON
	GO
	IF OBJECT_ID('Purchasing.usp_AT_uPurchaseOrderDetail', 'P') IS NOT NULL
	DROP PROCEDURE Purchasing.usp_AT_uPurchaseOrderDetail;
	GO
	CREATE PROCEDURE Purchasing.usp_AT_uPurchaseOrderDetail

gokepler / CustomizedArgumentParser

Created December 1, 2024 10:04 — forked from cherniag/CustomizedArgumentParser

CustomizedPredicateBuilderStrategy for RSQL JPA, processes defined custom RSQL operator (=containsPair= in this case) and transforms to JPQL predicate to query by map's key and value

	import com.github.tennaito.rsql.misc.ArgumentFormatException;
	import com.github.tennaito.rsql.misc.DefaultArgumentParser;

	import java.sql.Timestamp;
	import java.time.ZonedDateTime;
	import java.time.format.DateTimeFormatter;

	// default DefaultArgumentParser can't parse Timestamps :(
	public class CustomizedArgumentParser extends DefaultArgumentParser {

gokepler / jpaToHql.java

Created December 1, 2024 07:20 — forked from Crydust/jpaToHql.java

convert jpa TypedQuery to hibernate hql (=jpql)

	// @see http://antoniogoncalves.org/2012/05/24/how-to-get-the-jpqlsql-string-from-a-criteriaquery-in-jpa/
	TypedQuery<X> q = entityManager.createQuery(cq);
	try {
	Class<?> hibernateQueryClass = Class.forName("org.hibernate.Query");
	Object hibernateQuery = q.unwrap(hibernateQueryClass);
	java.lang.reflect.Method getQueryStringMethod = hibernateQueryClass.getMethod("getQueryString");
	Object hql = getQueryStringMethod.invoke(hibernateQuery);
	LOGGER.warn("hql = {}", hql);
	} catch (ClassNotFoundException \| NoSuchMethodException \| SecurityException \| IllegalAccessException \| IllegalArgumentException \| java.lang.reflect.InvocationTargetException ex) {
	ex.printStackTrace();

gokepler / RepositoryImpl.java

Created December 1, 2024 04:48 — forked from koraktor/RepositoryImpl.java

Combining specifications and projections in Spring Data JPA

	public class RepositoryImpl<T, ID extends Serializable>
	extends SimpleJpaRepository<T, ID extends Serializable> {

	ProjectionFactory projectionFactory;

	public <P> List<P> findProjected(Specification<?> spec, Sort sort, Class<P> projectionClass) {
	CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
	CriteriaQuery<Tuple> tupleQuery = criteriaBuilder.createTupleQuery();
	Root<?> root = tupleQuery.from(getDomainClass());

gokepler / DeviceDataRepository.java

Created November 30, 2024 12:57 — forked from brunnels/DeviceDataRepository.java

Generic REST Query Language with RSQL for Spring Data JPA

	package org.kraven.repository;

	import org.kraven.domain.DeviceData;
	import org.springframework.data.jpa.repository.JpaSpecificationExecutor;

	/**
	* Spring Data JPA repository for the DeviceData entity.
	*/
	@SuppressWarnings("unused")
	public interface DeviceDataRepository extends JpaRepository<DeviceData,Long>, JpaSpecificationExecutor<DeviceData> {

gokepler / ProxyTest.java

Created November 26, 2024 13:24 — forked from nathansgreen/ProxyTest.java

java.lang.reflect.Proxy over Annotation

	import java.lang.annotation.Retention;
	import java.lang.annotation.RetentionPolicy;
	import java.lang.reflect.InvocationHandler;
	import java.lang.reflect.Method;
	import java.lang.reflect.Proxy;
	import java.util.HashMap;
	import java.util.Map;

	import org.junit.Assert;
	import org.junit.Test;

gokepler / JpaEntityQueryBuilder.java

Created November 25, 2024 12:27 — forked from ufuk/JpaEntityQueryBuilder.java

Easy to use query builder for JPA Criteria API

	import org.apache.commons.collections4.CollectionUtils;
	import org.apache.commons.collections4.IteratorUtils;
	import org.apache.commons.lang3.StringUtils;
	import org.hibernate.query.criteria.internal.path.PluralAttributePath;
	import org.springframework.data.domain.Page;
	import org.springframework.data.domain.PageRequest;
	import org.springframework.data.repository.support.PageableExecutionUtils;

	import javax.persistence.EntityManager;
	import javax.persistence.TypedQuery;

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