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[英]Schema related problems with Flyway / Springboot and H2 in-memory database
[英]Arquillian and Flyway using different versions of H2 in-memory
我正在尝试创建一个 JPA-helper,它最终将变成 jar 并用于其他项目。 我想向这个项目添加集成测试,所以我添加了一个TestEntity
和TestService
class (这些是指DB
模式中的一个简单的TEST
表)。
目标是使用H2创建内存数据库,使用Arquillian在容器中运行测试,并使用Flyway创建/填充测试数据库。 Flyway 由@ApplicationScoped
class 的侦听器触发。
但是,每当我触发集成测试时,测试似乎都可以正常工作,直到调用count(*)
查询。 此时,Hibernate 抱怨架构(刚刚在 Flyway 中创建)不存在: Schema 'DB' does not exist
有很多日志,但亮点看起来是这样的:
hibernate.hbm2ddl.auto
设置为validate
,则它抱怨在 Flyway 中创建的表不存在( Schema-validation: missing table [DB.TEST]
)Schema 'DB' does not exist
我认为 Flyway 和 EntityManager 正在与数据库的不同实例通信。 Flyway 所做的更改不会以 EntityManager 可以看到的方式保存。
EntityManager
和Flyway
正在与同一个数据库通信。
persistence.xml
、 EntityManagerFactory
和FlywayDataLoader
),我尝试添加/删除各种MODE
值但没有任何效果。jdbc:h2:mem:test;DB_CLOSE_DELAY=-1;INIT=RUNSCRIPT FROM 'classpath:create.sql'
Schema 'DB' does not exist
问题。hibernate.hbm2ddl.auto
none
: Schema 'DB' does not exist
validate
: Schema-validation: missing table [DB.TEST]
update
, create-drop
:表已创建,但 Flyway 中的数据丢失EntityManagerFactory.create()
jdbc:h2:~/test-db
)
C:\Users\<me>
中创建一个名为test-db.mv
的文件。 该文件显示 Flyway 与其交互的证据,但 EntityManager 仍然生成Schema 'DB' does not exist
错误。hibernate.hbm2ddl.auto
设置为create
,然后在我的整个硬盘驱动器中搜索第二个test-db.mv
实例,但找不到。// various "server startup" logs
// ...
// misc hibernate logs
Apr 15, 2020 9:40:39 AM org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation
INFO: HHH000204: Processing PersistenceUnitInfo [
name: TestDS
...]
// ...
Loading Flyway Data
8 [main] INFO org.flywaydb.core.internal.util.VersionPrinter - Flyway Community Edition 5.0.7 by Boxfuse
246 [main] INFO org.flywaydb.core.internal.database.DatabaseFactory - Database: jdbc:h2:mem:test (H2 1.4)
354 [main] INFO org.flywaydb.core.internal.command.DbValidate - Successfully validated 2 migrations (execution time 00:00.028s)
377 [main] INFO org.flywaydb.core.internal.schemahistory.JdbcTableSchemaHistory - Creating Schema History table: "PUBLIC"."flyway_schema_history"
413 [main] INFO org.flywaydb.core.internal.command.DbMigrate - Current version of schema "PUBLIC": << Empty Schema >>
415 [main] INFO org.flywaydb.core.internal.command.DbMigrate - Migrating schema "PUBLIC" to version 1 - CreateDatabase
436 [main] INFO org.flywaydb.core.internal.command.DbMigrate - Migrating schema "PUBLIC" to version 2 - AddTestClasses
449 [main] INFO org.flywaydb.core.internal.command.DbMigrate - Successfully applied 2 migrations to schema "PUBLIC" (execution time 00:00.078s)
Apr 15, 2020 9:40:44 AM com.sun.enterprise.web.WebApplication start
INFO: Loading application [test] at [/test]
Apr 15, 2020 9:40:45 AM org.glassfish.deployment.admin.DeployCommand execute
INFO: test was successfully deployed in 7,649 milliseconds.
Apr 15, 2020 9:40:45 AM org.hibernate.hql.internal.QueryTranslatorFactoryInitiator initiateService
INFO: HHH000397: Using ASTQueryTranslatorFactory
Hibernate:
select
count(testobject0_.id) as col_0_0_
from
DB.TEST testobject0_
where
1=1
Apr 15, 2020 9:40:45 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
WARN: SQL Error: 30000, SQLState: 42Y07
Apr 15, 2020 9:40:45 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
ERROR: Schema 'DB' does not exist
// stack trace
/ ...
@RunWith(Arquillian.class)
public class ProviderTest {
@Deployment
public static JavaArchive createDeployment() {
JavaArchive jar = ShrinkWrap.create(JavaArchive.class)
.addClasses(
TestObject.class,
TestService.class,
QueryValuesProviderImpl.class,
CriteriaQueryProviderFactory.class,
EntityManagerFactory.class
)
.addClass(FlywayDataLoader.class)
.addAsResource("META-INF/persistence.xml")
.addAsManifestResource(new ByteArrayAsset(new byte[0]), ArchivePaths.create("beans.xml"));
System.out.println(jar.toString(true));
return jar;
}
@Inject
private TestService testService;
@Test
public void testGetTestResource() {
List<TestObject> data = testService.getTestObjects(new QueryValues());
assertNotNull(data);
assertEquals(2, data.size());
}
}
@ApplicationScoped
public class FlywayDataLoader {
private static final String JDBC_URL = "jdbc:h2:mem:test;DB_CLOSE_DELAY=-1";
private static boolean initialized = false;
public static void setup(
@Observes @Initialized(ApplicationScoped.class) final Object event
) {
if (!initialized) {
System.out.println("Loading Flyway Data");
Flyway flyway = new Flyway();
flyway.setDataSource(JDBC_URL, "sa", "");
flyway.setBaselineOnMigrate(true);
flyway.migrate();
initialized = true;
}
}
}
这分为两个文件(一个用于创建模式/表,第二个用于插入实际数据)。 这些文件位于/resources/db.migration/
文件夹中,分别命名为V1__CreateDatabase.sql
和V2__AddTestClasses.sql
。
CREATE SCHEMA DB;
create table DB.TEST
(
ID INT auto_increment
constraint PK_REQUEST_AUDIT
primary key,
FN VARCHAR2(256 char) default NULL not null,
LN VARCHAR2(256 char) default NULL not null,
BD TIMESTAMP default SYSDATE not null
)
;
insert into DB.TEST (FN, LN, BD) VALUES ('Alice', 'Zyl', PARSEDATETIME('1985-03-13','yyyy-MM-dd','en'));
insert into DB.TEST (FN, LN, BD) VALUES ('Bart', 'Young', PARSEDATETIME('1988-03-25','yyyy-MM-dd','en'));
此处使用的unitName
与 persistence.xml 中使用的persistence.xml
Unit Name 匹配。 那里使用的 JDBC 连接字符串与 Flyway Java 脚本中使用的连接字符串相同。
public class EntityManagerFactory {
@PersistenceUnit(unitName="TestDS")
private javax.persistence.EntityManagerFactory emFactory;
@Produces
@Default
@RequestScoped
public EntityManager create() {
return emFactory.createEntityManager();
}
public void dispose(@Disposes @Default EntityManager em){
if(em.isOpen()){
em.close();
}
}
}
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="TestDS" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<class>myproject.beans.TestObject</class>
<properties>
<!-- Configuring JDBC properties -->
<property name="javax.persistence.jdbc.url" value="jdbc:h2:mem:test;DB_CLOSE_DELAY=-1"/>
<property name="javax.persistence.jdbc.driver" value="org.h2.Driver"/>
<!-- Hibernate properties -->
<property name="hibernate.ddl-auto" value="none" />
<property name="hibernate.connection.user" value="sa" />
<property name="hibernate.archive.autodetection" value="class"/>
<property name="hibernate.format_sql" value="true"/>
<property name="hibernate.show_sql" value="true"/>
</properties>
</persistence-unit>
</persistence>
@RequestScoped
public class TestService {
@Inject
private EntityManager em;
@Inject
private CriteriaQueryProviderFactory criteriaQueryProviderFactory;
public List<TestObject> getTestObjects(QueryValues queryValues) {
CriteriaQueryProvider<TestObject> criteriaQueryProvider = criteriaQueryProviderFactory.getFactory();
CriteriaQuery<TestObject> criteriaQuery = criteriaQueryProvider.buildModifiedQuery(queryValues, TestObject.class);
TypedQuery<TestObject> typedQuery = criteriaQueryProvider.addSecondaryModifiers(criteriaQuery, queryValues, TestObject.class);
TypedQuery<Long> countQuery = criteriaQueryProvider.buildCountQuery(queryValues, TestObject.class);
System.out.println(String.format("There are %d objects total!", countQuery.getSingleResult()));
return typedQuery.getResultList();
}
}
the best way I found to integrate Flyway with Hibernate is to use an implementation of org.hibernate.integrator.spi.Integrator
: https://docs.jboss.org/hibernate/orm/5.4/javadocs/org/hibernate/integrator/ spi/Integrator.html 。 该接口有两个方法, integrate
和disintegrate
。 如果您将运行 Flyway 的代码放入实现的integrate
方法中,一切都应该可以正常工作。 Hibernate loads implementations of org.hibernate.integrator.spi.Integrator
the service loader mechanism from the Java Standard API, therefore you have to create a file META-INF/services/org.hibernate.integrator.spi.Integrator
which contains the fully qualified class 您的实现名称。
最好的
延斯
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