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‎.github/dependabot.yml

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version: 2
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updates:
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- package-ecosystem: "gradle"
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directory: "/"
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schedule:
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interval: "daily"
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ignore:
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- dependency-name: "org.apache.maven.plugins:*"
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- dependency-name: "com.h2database:h2"
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update-types: [ "version-update:semver-major" ]
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- dependency-name: "org.hibernate:hibernate-core"
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update-types: [ "version-update:semver-major", "version-update:semver-minor" ]
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- dependency-name: "org.hibernate:*"
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update-types: [ "version-update:semver-major" ]
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- dependency-name: "org.hibernate.*:*"
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update-types: [ "version-update:semver-major" ]
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- dependency-name: "com.github.alexcojocaru:elasticsearch-maven-plugin"
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update-types: [ "version-update:semver-major" ]
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- dependency-name: "org.elasticsearch:*"
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update-types: [ "version-update:semver-major" ]
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- dependency-name: "org.elasticsearch.*:*"
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update-types: [ "version-update:semver-major" ]

‎.gitignore

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# Gradle work directory and caches
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.gradle
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.gradletasknamecache
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/target
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*/target
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*/**/target
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/build
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*/build
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# IntelliJ specific files/directories
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out
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.idea
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*.ipr
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*.iws
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*.iml
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atlassian-ide-plugin.xml
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# Eclipse specific files/directories
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.classpath
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.project
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.settings
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.metadata
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bin
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# Miscellaneous
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*.log
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.clover
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.DS_Store

‎basic/build.gradle

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/*
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* This file was generated by the Gradle 'init' task.
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*
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* This project uses @Incubating APIs which are subject to change.
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*/
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plugins {
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id 'org.hibernate.orm.java-conventions'
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id "me.champeau.jmh" version "0.7.2"
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}
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dependencies {
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testRuntimeOnly 'com.h2database:h2:2.2.224'
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testImplementation 'org.junit.jupiter:junit-jupiter-api:5.10.2'
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testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine'
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testImplementation 'org.openjdk.jmh:jmh-core:1.36'
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testImplementation 'org.openjdk.jmh:jmh-generator-annprocess:1.36'
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def orm = project.findProperty("orm")
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if ( "6.4" == orm ) {
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testImplementation 'org.hibernate.orm:hibernate-core:6.4.8.Final'
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testImplementation 'org.hibernate.orm:hibernate-testing:6.4.8.Final'
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}
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else if ( "6.2" == orm ) {
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testImplementation 'org.hibernate.orm:hibernate-core:6.2.25.Final'
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testImplementation 'org.hibernate.orm:hibernate-testing:6.2.25.Final'
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}
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else if ( "5.6" == orm ) {
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testImplementation 'org.hibernate:hibernate-core-jakarta:5.6.15.Final'
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testImplementation 'org.hibernate:hibernate-testing-jakarta:5.6.15.Final'
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}
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else {
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testImplementation 'org.hibernate.orm:hibernate-core:6.6.0.Alpha1'
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testImplementation 'org.hibernate.orm:hibernate-testing:6.6.0.Alpha1'
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}
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}
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description = 'hibernate-orm-benchmark-basic'
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jmh {
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warmupIterations = 2
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iterations = 5
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fork = 1
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}

‎basic/src/test/java/org/hibernate/benchmark/queryl1hit/QueryEntityLazyInitCollectionBase.java

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package org.hibernate.benchmark.queryl1hit;
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import java.util.ArrayList;
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import java.util.List;
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import jakarta.persistence.CascadeType;
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import jakarta.persistence.Column;
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import jakarta.persistence.Entity;
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import jakarta.persistence.EntityManager;
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import jakarta.persistence.EntityManagerFactory;
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import jakarta.persistence.FetchType;
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import jakarta.persistence.GeneratedValue;
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import jakarta.persistence.GenerationType;
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import jakarta.persistence.Id;
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import jakarta.persistence.JoinColumn;
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import jakarta.persistence.ManyToOne;
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import jakarta.persistence.OneToMany;
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import jakarta.persistence.OneToOne;
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import jakarta.persistence.Persistence;
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import jakarta.persistence.Table;
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import org.openjdk.jmh.annotations.Scope;
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import org.openjdk.jmh.annotations.Setup;
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import org.openjdk.jmh.annotations.State;
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import org.openjdk.jmh.annotations.TearDown;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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@State(Scope.Thread)
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public abstract class QueryEntityLazyInitCollectionBase {
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protected EntityManagerFactory entityManagerFactory;
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@Setup
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public void setup() {
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entityManagerFactory = Persistence.createEntityManagerFactory("bench1");
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final EntityManager em = entityManagerFactory.createEntityManager();
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em.getTransaction().begin();
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em.createQuery("delete Book").executeUpdate();
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em.createQuery("delete Author").executeUpdate();
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em.createQuery("delete AuthorDetails").executeUpdate();
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for (int i = 0; i < 1000; i++) {
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populateData(em);
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}
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em.getTransaction().commit();
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em.close();
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}
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@TearDown
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public void destroy() {
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entityManagerFactory.close();
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}
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protected void queryAuthors(EntityManager em) {
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final List<Author> authors = em.createQuery( "from Author", Author.class ).getResultList();
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authors.forEach( author -> assertFalse( author.books.isEmpty() ) );
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}
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public abstract void test();
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public void populateData(EntityManager entityManager) {
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final Book book = new Book();
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book.name = "HTTP Definitive guide";
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final Author author = new Author();
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author.name = "David Gourley";
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final AuthorDetails details = new AuthorDetails();
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details.name = "Author Details";
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details.author = author;
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author.details = details;
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author.books.add(book);
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book.author = author;
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entityManager.persist(author);
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entityManager.persist(book);
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}
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@Entity(name = "Author")
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@Table(name = "Author")
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public static class Author {
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@Id
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@GeneratedValue(strategy = GenerationType.IDENTITY)
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public Long authorId;
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@Column
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public String name;
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@OneToMany(fetch = FetchType.LAZY, mappedBy = "author")
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public List<Book> books = new ArrayList<>();
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@OneToOne(fetch = FetchType.EAGER, optional = false, cascade = CascadeType.ALL, orphanRemoval = true)
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public AuthorDetails details;
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}
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@Entity(name = "AuthorDetails")
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@Table(name = "AuthorDetails")
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public static class AuthorDetails {
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@Id
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@GeneratedValue(strategy = GenerationType.IDENTITY)
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public Long detailsId;
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@Column
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public String name;
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@OneToOne(fetch = FetchType.LAZY, mappedBy = "details", optional = false)
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public Author author;
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}
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@Entity(name = "Book")
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@Table(name = "Book")
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public static class Book {
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@Id
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@GeneratedValue(strategy = GenerationType.IDENTITY)
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public Long bookId;
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@Column
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public String name;
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@ManyToOne(fetch = FetchType.LAZY, optional = false)
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@JoinColumn(name = "author_id", nullable = false)
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public Author author;
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}
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}

‎basic/src/test/java/org/hibernate/benchmark/queryl1hit/QueryEntityLazyInitCollectionLoop.java

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package org.hibernate.benchmark.queryl1hit;
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import java.io.IOException;
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import java.util.List;
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import jakarta.persistence.EntityManager;
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import jakarta.persistence.FlushModeType;
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import org.openjdk.jmh.Main;
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import org.openjdk.jmh.annotations.Benchmark;
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import org.openjdk.jmh.annotations.Scope;
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import org.openjdk.jmh.annotations.State;
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import org.openjdk.jmh.runner.Runner;
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import org.openjdk.jmh.runner.RunnerException;
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import org.openjdk.jmh.runner.options.Options;
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import org.openjdk.jmh.runner.options.OptionsBuilder;
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import org.openjdk.jmh.runner.options.TimeValue;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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/**
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* Query an entity and initialize a lazy collection in a loop to hit the L1 cache with repeatedly.
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*/
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@State(Scope.Thread)
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public class QueryEntityLazyInitCollectionLoop extends QueryEntityLazyInitCollectionBase {
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@Benchmark
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public void test() {
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final EntityManager em = entityManagerFactory.createEntityManager();
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em.setFlushMode( FlushModeType.COMMIT );
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em.getTransaction().begin();
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for ( int i = 0; i < 100_000; i++ ) {
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queryAuthors( em );
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}
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em.getTransaction().commit();
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em.close();
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}
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public static void main(String[] args) {
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QueryEntityLazyInitCollectionLoop jpaBenchmark = new QueryEntityLazyInitCollectionLoop();
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jpaBenchmark.setup();
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for ( int i = 0; i < 5; i++ ) {
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jpaBenchmark.test();
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}
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jpaBenchmark.destroy();
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}
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public static void main1(String[] args) throws RunnerException, IOException {
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if ( args.length == 0 ) {
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final Options opt = new OptionsBuilder()
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.include( ".*" + QueryEntityLazyInitCollectionLoop.class.getSimpleName() + ".*" )
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.warmupIterations( 3 )
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.warmupTime( TimeValue.seconds( 3 ) )
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.measurementIterations( 3 )
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.measurementTime( TimeValue.seconds( 5 ) )
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.threads( 1 )
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.addProfiler( "gc" )
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.forks( 2 )
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.build();
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new Runner( opt ).run();
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}
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else {
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Main.main( args );
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}
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}
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}

‎basic/src/test/java/org/hibernate/benchmark/queryl1hit/QueryEntityLazyInitCollectionSingle.java

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package org.hibernate.benchmark.queryl1hit;
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import jakarta.persistence.*;
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import org.openjdk.jmh.Main;
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import org.openjdk.jmh.annotations.*;
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import org.openjdk.jmh.runner.Runner;
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import org.openjdk.jmh.runner.RunnerException;
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import org.openjdk.jmh.runner.options.Options;
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import org.openjdk.jmh.runner.options.OptionsBuilder;
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import org.openjdk.jmh.runner.options.TimeValue;
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import java.io.IOException;
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import java.util.List;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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/**
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* Query an entity and initialize a lazy collection.
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*/
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@State(Scope.Thread)
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public class QueryEntityLazyInitCollectionSingle extends QueryEntityLazyInitCollectionBase {
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@Benchmark
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public void test() {
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final EntityManager em = entityManagerFactory.createEntityManager();
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em.getTransaction().begin();
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queryAuthors( em );
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em.getTransaction().commit();
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em.close();
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}
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public static void main1(String[] args) {
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QueryEntityLazyInitCollectionSingle jpaBenchmark = new QueryEntityLazyInitCollectionSingle();
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jpaBenchmark.setup();
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for ( int i = 0; i < 10_000; i++ ) {
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jpaBenchmark.test();
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}
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jpaBenchmark.destroy();
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}
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public static void main(String[] args) throws RunnerException, IOException {
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if ( args.length == 0 ) {
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final Options opt = new OptionsBuilder()
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.include( ".*" + QueryEntityLazyInitCollectionSingle.class.getSimpleName() + ".*" )
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.warmupIterations( 3 )
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.warmupTime( TimeValue.seconds( 3 ) )
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.measurementIterations( 3 )
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.measurementTime( TimeValue.seconds( 5 ) )
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.threads( 1 )
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.addProfiler( "gc" )
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.forks( 2 )
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.build();
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new Runner( opt ).run();
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}
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else {
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Main.main( args );
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}
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}
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}

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