I am new to Liquibase and JHipster, and am having some problems with using the maven plugin to generate a diff.
I am getting the following error when running mvn liquibase:diff -e -X
The relevant section of my pom is:
<plugin>
<groupId>org.liquibase</groupId>
<artifactId>liquibase-maven-plugin</artifactId>
<version>${liquibase.version}</version>
<dependencies>
<dependency>
<groupId>org.javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.18.2-GA</version>
</dependency>
<dependency>
<groupId>org.liquibase.ext</groupId>
<artifactId>liquibase-hibernate4</artifactId>
<version>${liquibase-hibernate4.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>${project.parent.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.2.1.Final</version>
</dependency>
</dependencies>
<configuration>
<changeLogFile>src/main/resources/config/liquibase/master.xml</changeLogFile>
<diffChangeLogFile>
src/main/resources/config/liquibase/changelog/${maven.build.timestamp}_changelog.xml
</diffChangeLogFile>
<driver>org.postgresql.Driver</driver>
<url>jdbc:postgresql://localhost/shiftwork</url>
<defaultSchemaName/>
<username>postgres</username>
<password/>
<referenceUrl>hibernate:spring:com.teammachine.staffrostering.domain?dialect=org.hibernate.dialect.PostgreSQL94Dialect&hibernate.ejb.naming_strategy=org.springframework.boot.orm.jpa.hibernate.SpringNamingStrategy</referenceUrl>
<verbose>true</verbose>
<logging>debug</logging>
</configuration>
</plugin>
<changeLogFile>src/main/resources/config/liquibase/master.xml</changeLogFile>
<diffChangeLogFile>
src/main/resources/config/liquibase/changelog/${maven.build.timestamp}_changelog.xml
</diffChangeLogFile>
<driver>org.postgresql.Driver</driver>
<url>jdbc:postgresql://localhost/myApp</url>
<defaultSchemaName/>
<username>postgres</username>
<password/>
<referenceUrl>hibernate:spring:com.myapp.domain?dialect=&hibernate.ejb.naming_strategy=org.springframework.boot.orm.jpa.hibernate.SpringNamingStrategy</referenceUrl>
<verbose>true</verbose>
<logging>debug</logging>
</configuration>
</plugin>
Perhaps I am wrong, but it is my understanding that the missing class (org.hibernate.boot) is part of Hibernate Core, which is included.
Number of foreign imports: 1
import: Entry[import from realm ClassRealm[maven.api, parent: null]]
-----------------------------------------------------
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:166)
... 21 more
Caused by: java.lang.NoClassDefFoundError: org/hibernate/boot/registry/classloading/internal/ClassLoaderServiceImpl$Work
at org.hibernate.jpa.boot.spi.Bootstrap.getEntityManagerFactoryBuilder(Bootstrap.java:45)
at org.hibernate.jpa.boot.spi.Bootstrap.getEntityManagerFactoryBuilder(Bootstrap.java:57)
at liquibase.ext.hibernate.database.HibernateSpringDatabase.buildConfigurationFromScanning(HibernateSpringDatabase.java:243)
at liquibase.ext.hibernate.database.HibernateSpringDatabase.buildConfiguration(HibernateSpringDatabase.java:55)
at liquibase.ext.hibernate.database.HibernateDatabase.setConnection(HibernateDatabase.java:45)
at liquibase.database.DatabaseFactory.findCorrectDatabaseImplementation(DatabaseFactory.java:131)
at liquibase.database.DatabaseFactory.openDatabase(DatabaseFactory.java:151)
at liquibase.integration.commandline.CommandLineUtils.createDatabaseObject(CommandLineUtils.java:85)
at org.liquibase.maven.plugins.LiquibaseDatabaseDiff.performLiquibaseTask(LiquibaseDatabaseDiff.java:166)
at org.liquibase.maven.plugins.AbstractLiquibaseMojo.execute(AbstractLiquibaseMojo.java:394)
at org.liquibase.maven.plugins.LiquibaseDatabaseDiff.execute(LiquibaseDatabaseDiff.java:146)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
... 21 more
Caused by: java.lang.ClassNotFoundException: org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl$Work
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:247)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239)
... 33 more
[ERROR]
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginContainerException
anton@anton-K93SV:~/git/hughestech/shiftwork/staffservice$
The issue is that you left the dialect property blank inside the referenceUrl of the liquibase-maven-plugin configuration. The plugin tries to look for that blank class and, of course, fails. This should point to the class implementing the custom dialect to use for Hibernate.
<referenceUrl>hibernate:spring:com.myapp.domain?dialect=&hibernate.ejb.naming_strategy=org.springframework.boot.orm.jpa.hibernate.SpringNamingStrategy</referenceUrl>
<!-- ^^^^^^^^ -->
If you're using PostgreSQL, it depends on the version of your database. For PostgreSQL 9.4 or later, you can use the class org.hibernate.dialect.PostgreSQL94Dialect as the dialect.
Therefore, update your configuration to:
<referenceUrl>hibernate:spring:com.myapp.domain?dialect=org.hibernate.dialect.PostgreSQL94Dialect&hibernate.ejb.naming_strategy=org.springframework.boot.orm.jpa.hibernate.SpringNamingStrategy</referenceUrl>
You're also depending on conflicting versions of Hibernate in your plugin dependencies: liquibase-hibernate4 requires Hibernate 4.3+ but you're depending on Hibernate Core 5.2.1.Final and they are not compatible. As such, you need to remove this dependency on hibernate-core.