meta1203 :
I've made a Hibernate configuration maven project (built with the maven-shade-plugin) to allow my codebase to use one unified "database class". However, the class does not seem to map (throws a org.hibernate.hql.internal.ast.QuerySyntaxException: User is not mapped exception at runtime) when called from outside the running project.
When ran within the project, everything works fine. However, Hibernate fails to map the entity when run from outside the project.
CommonDB.java (part of the maven package meta1203-data)
package com.meta1203.microservices;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class CommonDB <C extends BaseEntity> {
private Configuration cfg;
private SessionFactory sf;
private Session session;
private Class<C> c;
public CommonDB(Class<C> anoClass) {
String jdbcUrl = String.format(
"jdbc:mysql://%s/%s",
System.getenv("DB_URL"),
System.getenv("DB_NAME"));
cfg = new Configuration()
.setProperty("hibernate.connection.url", jdbcUrl)
.setProperty("hibernate.connection.username", System.getenv("DB_USERNAME"))
.setProperty("hibernate.connection.password", System.getenv("DB_PASSWORD"))
.setProperty("hibernate.connection.driver_class", "com.mysql.jdbc.Driver")
.setProperty("hibernate.connection.pool_size", "1")
.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQL5Dialect")
.setProperty("hibernate.hbm2ddl.auto", "update")
.setProperty("hibernate.show_sql", "true")
.addAnnotatedClass(anoClass.getClass());
c = anoClass;
}
public void open() {
sf = cfg.buildSessionFactory();
session = sf.openSession();
}
public void close() {
session.close();
sf.close();
}
public C findOneBy(String field, String o) {
String query = "select u from " + c.getSimpleName() + " u where u." + field + " = :id";
return session.createQuery(query, c).setParameter("id", o).getSingleResult();
}
// other CRUD functions
}
TestDB.java (part of the maven package meta1203-userservice)
package com.meta1203.microservices.user;
import com.meta1203.microservices.CommonDB;
import com.meta1203.microservices.user.model.User;
public class TestDB {
public static void main(String[] args) {
TestDB tdb = new TestDB();
CommonDB<User> db = new CommonDB<User>(User.class);
db.open();
User hunter = db.findOneBy("username", "hunter");
System.out.println(hunter.getUsername());
System.out.println(db.countBy("username", "hunter"));
db.close();
}
}
User.java (part of the maven package meta1203-userservice)
package com.meta1203.microservices.user.model;
import java.util.Set;
import javax.persistence.ElementCollection;
import javax.persistence.Entity;
import javax.persistence.Table;
import com.meta1203.microservices.BaseEntity;
@Entity
@Table(name = "users")
public class User extends BaseEntity {
private String username;
private String textNotificationList;
private String emailNotificationList;
@ElementCollection
private Set<Long> ignoredAlerts;
@ElementCollection
private Set<Long> clients;
// to be parsed with DateTimeFormatter.ISO_OFFSET_DATE_TIME
private String lastItineraryUpdate;
// getters and setters
}
parent's pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.meta1203</groupId>
<artifactId>meta1203-services</artifactId>
<packaging>pom</packaging>
<version>0.0.1</version>
<properties>
<java.version>1.8</java.version>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-core</artifactId>
<version>1.2.0</version>
</dependency>
<dependency>
<groupId>com.meta1203</groupId>
<artifactId>meta1203-data</artifactId>
<version>0.0.1</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.3.11.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.36</version>
</dependency>
</dependencies>
<modules>
<module>meta1203-userservice</module>
</modules>
</project>
Sep 07, 2019 2:36:13 AM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {[WORKING]}
Sep 07, 2019 2:36:13 AM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Sep 07, 2019 2:36:13 AM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.0.4.Final}
Sep 07, 2019 2:36:14 AM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
Sep 07, 2019 2:36:14 AM org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl getIsolatedConnection
INFO: HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess@329dbdbf] for (non-JTA) DDL execution was not in auto-commit mode; the Connection 'local transaction' will be committed and the Connection will be set into auto-commit mode.
Sep 07, 2019 2:36:14 AM org.hibernate.hql.internal.QueryTranslatorFactoryInitiator initiateService
INFO: HHH000397: Using ASTQueryTranslatorFactory
Exception in thread "main" java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: User is not mapped [select u from User u where u.username = :id]
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:138)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:729)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:745)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:104)
at com.meta1203.microservices.CommonDB.findOneBy(CommonDB.java:72)
at com.meta1203.microservices.user.TestDB.main(TestDB.java:12)
Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: User is not mapped [select u from User u where u.username = :id]
at org.hibernate.hql.internal.ast.QuerySyntaxException.generateQueryException(QuerySyntaxException.java:79)
at org.hibernate.QueryException.wrapWithQueryString(QueryException.java:103)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:219)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:143)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:119)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:80)
at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:153)
at org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:611)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:720)
... 4 more
Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: User is not mapped
at org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:169)
at org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:91)
at org.hibernate.hql.internal.ast.tree.FromClause.addFromElement(FromClause.java:79)
at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:331)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3695)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3584)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:720)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:576)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:313)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:261)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:271)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:191)
... 10 more
meta1203 :
Whelp, I found out what was going on. My galaxy brain decided to do addAnnotatedClass(anoClass.getClass()) on a Class object, so I was trying to declare java.lang.Class as a Hibernate Entity... Oh well, I'm just an idiot. Changed it to just addAnnotatedClass(anoClass) and it works just fine.