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Lazy loading exception with Spring Data JPA and Hibernate

I'm trying to learn Spring Data JPA with Hibernate, currently within a Java standalone project (though later I'll use things within a Web Project), and I'm getting the exception:
org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.dbprototype.domain.Crash.vehicles
And I'm not sure why.
#Entity(name = "STAGING.TEST_CRASH")
public class Crash {
#Id
#Column(name = "C_TEST_CRASH_NUMBER")
private int crashNum;
#Column(name = "C_RECORD_NUMBER")
private int recordNum;
#Column(name = "C_TOTAL_UNITS")
private int totalUnits;
#Column(name = "C_TOTAL_INJURIES")
private int totalInjured;
#OneToMany(cascade=CascadeType.ALL, mappedBy="crash") // fails.
private List<Vehicle> vehicles;
#OneToOne(mappedBy="crash", cascade=CascadeType.ALL) // this works ok.
private Metadata metaData;
public void printCrash() {
// prints Crash fields, vehicles, and metadata.
}
// getters & setters
}
#Entity(name = "STAGING.TEST_VEHICLE")
public class Vehicle {
#Id
#Column(name = "V_TEST_VEHICLE_NUMBER")
private int vehicleNum;
//#Id
#Column(name = "C_TEST_CRASH_NUMBER")
private int crashNum;
#Column(name = "C_RECORD_NUMBER")
private int recordNum;
#Column(name = "V_VEH_MAKE")
private String vehicleMake;
#Column(name = "V_VEH_MODEL")
private String vehicleModel;
#Column(name = "V_VEH_YEAR")
private int year;
#ManyToOne(cascade=CascadeType.ALL)
private Crash crash;
// getters & setters
}
My Service Layer is:
#Service
#Transactional(propagation=Propagation.REQUIRED)
public class CrashService {
private CrashDao crashDao;
public void setCrashDao(CrashDao dao) {
crashDao = dao;
}
public void print() {
System.out.println("you called CrashService!");
}
// DAO layer will need all 4 CRUD operations on each table.
// read one Crash
public Crash readCrash(int id) {
return crashDao.findOne(1000);
}
And my DAO layer is just:
#Repository
public interface CrashDao extends CrudRepository<Crash, Integer>{ }
My spring.xml is:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
http://www.springframework.org/schema/data/jpa
http://www.springframework.org/schema/data/jpa/spring-jpa.xsd
">
<!-- Scans the classpath for annotated components that will be auto-registered as Spring beans -->
<context:component-scan base-package="com.dbprototype" />
<!-- Activates various annotations to be detected in bean classes e.g: #Autowired -->
<context:annotation-config />
<jpa:repositories base-package="com.dbprototype.dao" />
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<!-- data source properties -->
</bean>
<bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="generateDdl" value="false" />
<property name="showSql" value="true" />
<property name="databasePlatform" value="org.hibernate.dialect.OracleDialect" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter" ref="jpaVendorAdapter" />
<!-- Spring based scanning for #Entity classes -->
<property name="packagesToScan" value="com.dbprototype.domain" />
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
</beans>
I'm not understanding the correct way to do a #OneToMany, though from some tutorials, what I have is "correct". Though if I change the #OneToMany to use EAGER loading instead of the default LAZY, I get a different exception:
org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet
Caused by: java.sql.SQLSyntaxErrorException: ORA-00904: "VEHICLES1_"."CRASH_C_TEST_CRASH_NUMBER": invalid identifier
Could someone help me understand what is going on, and how to do the OneToMany correctly?
Thanks
Chris

Does that relation works in the other way? If you'd like to access the Crash from any Vechicle?
What's the join column in the table of Vechicle? I think, you miss the #JoinColumn annotation in the class Vechicle.
See the JPA WikiBook about ManyToOnes: https://en.wikibooks.org/wiki/Java_Persistence/ManyToOne
Code:
#ManyToOne(cascade=CascadeType.ALL)
#JoinColumn(name = "join_column_in_table_of_vechicle", reverseJoinColumn="C_TEST_CRASH_NUMBER")
private Crash crash;
If not, please provide the table structures, and turn on SQL-Logging, and provide the select, which causes the exception.

One to Many mapping using Hibernate and Spring

I am trying to create two join tables ConceptModelDetails and Instructions using a foreign key. Following are my model classes:
ConceptModelDetails:
package com.assignment.model;
#Entity
#Table(name="conceptModelDetails")
public class ConceptModelDetails {
#Id #GeneratedValue(strategy=GenerationType.AUTO)
private int instructionsId;
private String operationType;
private String conceptModelID;
private String requestor;
private String status;
private Timestamp requestDateTime;
private Timestamp lastExecutedDateTime;
private Timestamp completedDateTime;
#OneToMany(cascade=CascadeType.ALL, mappedBy="conceptModelDetails")
private Set<Instructions> instructions;
public ConceptModelDetails() {}
}
and Instuctions:
package com.assignment.model;
#Entity
#Table(name="instructions")
public class Instructions {
#Id
#GeneratedValue
private int Sno;
private String instruction;
#ManyToOne
#JoinColumn(name="instructionsId")
private ConceptModelDetails conceptModelDetails;
}
Following is applicationContext.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="org.postgresql.Driver" />
<property name="url" value="jdbc:postgresql://192.168.1.79:5432/test" />
<property name="username" value="postgres" />
<property name="password" value="admin" />
</bean>
<bean id="objDAO" class="com.assignment.dao.impl.ConceptModelDAOImpl">
<property name="sessionFactory" ref="sessionfactory" />
</bean>
<bean id="sessionfactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="packagesToScan" value="com.assignment.model"></property>
<property name="annotatedClasses">
<list>
<value>com.assignment.model.ConceptModelDetails</value>
<value>com.assignment.model.Instructions</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.cache.use_second_level_cache">false</prop>
</props>
</property>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionfactory" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
</beans>
and Controller:
#RequestMapping(value = "/myCntrl", method = RequestMethod.POST)
public String handler(HttpServletRequest request) {
System.out.println("handler");
// System.out.println(request.getParameter("conceptID"));
// System.out.println(request.getParameter("operationType"));
String[] operations = request.getParameterValues("operations");
Date date = new Date();
Timestamp time = new Timestamp(date.getTime());
ConceptModelDetails conceptModelDetails = new ConceptModelDetails();
conceptModelDetails
.setConceptModelID(request.getParameter("conceptID"));
conceptModelDetails.setOperationType(request
.getParameter("operationType"));
conceptModelDetails.setRequestor(request.getParameter("requestor"));
conceptModelDetails.setRequestDateTime(time);
ApplicationContext context = new ClassPathXmlApplicationContext(
"applicationContext.xml");
System.out.println("yo");
ConceptModelDAO obj = (ConceptModelDAO)context.getBean("objDAO");
System.out.println("no");
Instructions instructions = new Instructions();
for(int i = 0; i < operations.length; i++){
instructions.setInstruction(operations[i]);
obj.addInstructions(instructions);
}
obj.add(conceptModelDetails);
return "success";
}
Problems when I run this code are:
Same hibernate_sequence is used for both the tables.
Foreign key is not mapped in the Instruction table as seen in the following screenshot.
Please guide what is wrong with the code. I am new to hibernate and spring, so I'd appreciate a detailed explanation. Thanks in advance.

1) You are using the Global sequence generator that hibernate provide by default when no generator is provided as specifed by the JPA Spec.
Change it as follows. Do this to the both of the classes with different sequences for each class.
#Entity
#SequenceGenerator(name="PRIVATE_SEQ", sequenceName="private_sequence")
public class ConceptModelDetails {
#Id #GeneratedValue(strategy = GenerationType.SEQUENCE, generator="PRIVATE_SEQ")
private int instructionsId;
2) Here Instructions class owns the relationship and
therefore you should set ConceptModelDetails object to the Instructions object before saving the Instructions object.
ConceptModelDetails cmd1 = new ConceptModelDetails();
Instructions i = new Instructions()
i.setConceptModelDetails(cmd1);
....
Then save the Instructions object i
Hope this helps.

Spring #JsonIgnore not working

How can I get #JsonIgnore to work I have a class. And even if I put the annotation there it has no effect on the output. I am using Jackson.
public class QuestionBlock implements ComparableByID{
int ID;
String title;
String description;
boolean deleted;
boolean isDraft;
boolean visible;
Timestamp modifiedDate;
String modifiedBy;
private List<Question> questions = new ArrayList<>();
#JsonIgnore
private List<Survey> surveys = new ArrayList<>();
...
#JsonIgnore
public List<Survey> getSurveys() {
return surveys;
}
#JsonIgnore
public void setSurveys(List<Survey> surveys) {
this.surveys = surveys;
}
}
This is my Controller method:
#RequestMapping(value = "/questionBlock/{id}",produces = "application/json;charset=UTF-8")
#ResponseBody
public QuestionBlock getQuestionBlock(#PathVariable("id") int id) {
return surveyService.getQuestionBlock(id);
}
Here is my servlet-context.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<mvc:annotation-driven />
<mvc:resources mapping="/resources/**" location="/resources/" />
<mvc:resources location="/, classpath:/META-INF/web-resources/"
mapping="/resources/**" />
<context:property-placeholder location="classpath*:META-INF/*.properties" />
<context:component-scan base-package="com.adam.czibere" />
<bean class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" id="myDataSource" name="dataSource">
<property name="driverClassName" value="${database.driverClassName}" />
<property name="url" value="${database.url}" />
<property name="username" value="${database.username}" />
<property name="password" value="${database.password}" />
<property name="testOnBorrow" value="true" />
<property name="testOnReturn" value="true" />
<property name="testWhileIdle" value="true" />
<property name="timeBetweenEvictionRunsMillis" value="1800000" />
<property name="numTestsPerEvictionRun" value="3" />
<property name="minEvictableIdleTimeMillis" value="1800000" />
<property name="validationQuery" value="SELECT 1" />
</bean>
<bean id="mySessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="myDataSource" />
<property name="packagesToScan">
<array>
<value>com.adam.czibere</value>
</array>
</property>
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.MySQLDialect
</value>
</property>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="mySessionFactory" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean
class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<property name="mediaTypes">
<map>
<entry key="html" value="text/html" />
<entry key="json" value="application/json" />
</map>
</property>
<property name="viewResolvers">
<list>
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>
</list>
</property>
<property name="defaultViews">
<list>
<bean
class="org.springframework.web.servlet.view.json.MappingJacksonJsonView">
<property name="prefixJson" value="false" />
<property name="objectMapper" ref="jacksonObjectMapper" />
</bean>
</list>
</property>
</bean>
<bean id="jacksonObjectMapper" class="org.codehaus.jackson.map.ObjectMapper" />
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<bean
class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
<property name="prefixJson" value="false" />
<property name="supportedMediaTypes" value="application/json" />
</bean>
</list>
</property>
</bean>
</beans>

I have finally found a solution. I changed the import statement from
import com.fasterxml.jackson.annotate.JsonIgnore; // com. instead of org.
to
import org.codehaus.jackson.annotate.JsonIgnore;
Basically you have to make sure you are using the same class everywhere.

The annotation should only be on the 'get' methods. You seem to have #Json... annotations on your private fields.

If you are using an implementation of Jackson and its annotations are not working it's probably because you have another dependency of jackson with better precedence. Hence if you want to assure that certain implementation of jackson prevales (IMHO the best choice is the one that you have all classes already annotated with, because probably it came with other dependencies) specify this dependency in the pom of the application module. So if you have in multiple modules all your entities annotated with
import com.fasterxml.jackson.annotate.JsonIgnore; // note: com. instead of org.
Instead of replacing all imports just specify the corresponding dependency in the application pom:
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
This will clarify to Spring Boot that this is the implementation you want to use.

Putting #JsonProperty(access = JsonProperty.Access.WRITE_ONLY) before the field declaration solved the problem for me.
#JsonProperty(access = JsonProperty.Access.WRITE_ONLY)
private List<Survey> surveys = new ArrayList<>();
I'm using jackson version 2.11.3

I added #Getter(onMethod_=#JsonIgnore) for boolean.
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
#Data
#Builder
#NoArgsConstructor
#AllArgsConstructor
#JsonIgnoreProperties(ignoreUnknown = true)
public class TestClass {
#JsonIgnore
private String name;
#Getter(onMethod_=#JsonIgnore)
private boolean isValid;
}

I faced this issue in my project and finally I got the solution.
Replace the dependency...
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-jaxrs</artifactId>
<version>1.9.13</version>
</dependency>
Import : com.fasterxml.jackson.annotation.JsonIgnore;
I hope, It will work.

In my case JsonIgnore was not working only on dates. Then I understood that was because of #JsonFormat() that I was using to define the format of date. Removing that solved the issue.

You Need to change your org.codehaus.jackson version.
I am currently using 1.1.1 version in which #JsonIgonre
is not working.
I changed it with 1.9.13 then #JsonIgnore is working fine.
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-jaxrs</artifactId>
<version>1.1.1</version>
</dependency>
Change to
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-jaxrs</artifactId>
<version>1.9.13</version>
</dependency>
And Java Code is :-
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import org.codehaus.jackson.annotate.JsonIgnore;
#Entity
#Table(name="users")
public class Users implements Serializable{
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private Integer id;
private String username;
private String firstname;
#JsonIgnore
private String lastname;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getFirstname() {
return firstname;
}
public void setFirstname(String firstname) {
this.firstname = firstname;
}
public String getLastname() {
return lastname;
}
public void setLastname(String lastname) {
this.lastname = lastname;
}
}

I faced the same issue while working with spring and hibernate. The reason for this was that in entity class I was using org.codehaus.jackson.JsonIgnore and in spring I was using com.fasterxml.jackson.jaxrs.JsonIgnore. Fix to any one library in both layers and problem will disappear.

If #JsonProperty("fieldName") is also present on the field along with #JsonIgnore, the latter is ignored. This could happen, for instance, in generated code.
#Generated("jsonschema2pojo")
public MyGeneratedClass {
// ...
#JsonProperty("label") // This overrides #JsonIgnore
#JsonIgnore(true) // Doesn't work
#Field(name = "label")
private java.lang.String label;
// ...
}
From the documentation of JsonIgnore:
... if only particular accessor is to be ignored ..., this can be done by annotating other not-to-be-ignored accessors with JsonProperty (or its equivalents).

Lazyloading exception due to Session closing in #Transactional method using JPA with Hibernate, Spring and CrudRepository interface

I am currently having an issue with lazy loading not working on a bidirectional entity relationship due to the following exception:
org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: sample.Person.sent, no session or session was closed
at org.hibernate.collection.internal.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:394)
at org.hibernate.collection.internal.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:386)
at org.hibernate.collection.internal.AbstractPersistentCollection.readElementExistence(AbstractPersistentCollection.java:161)
at org.hibernate.collection.internal.PersistentBag.contains(PersistentBag.java:256)
at sample.EmailTest.testTest(EmailTest.java:47)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:80)
at org.testng.internal.MethodInvocationHelper$1.runTestMethod(MethodInvocationHelper.java:169)
at org.springframework.test.context.testng.AbstractTestNGSpringContextTests.run(AbstractTestNGSpringContextTests.java:158)
I have the following sample entity classes:
Email
#Entity
public class Email {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String subject;
#ManyToOne(fetch = FetchType.EAGER)
private Person sender;
#ManyToMany(fetch = FetchType.EAGER)
private List<Person> recipients;
... setters/getters/constructors/equals/hashcode
Person
#Entity
public class Person {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
#Column(unique = true)
private String name;
#OneToMany(mappedBy = "sender")
private List<Email> sent;
#ManyToMany(mappedBy = "recipients")
private List<Email> received;
... setters/getters/constructors/equals/hashcode
The following repositories:
EmailRepository
import org.springframework.data.repository.CrudRepository;
public interface EmailRepository extends CrudRepository<Email, Long> {
}
PersonRepository
import org.springframework.data.repository.CrudRepository;
public interface PersonRepository extends CrudRepository<Person, Long> {
}
persistence.xml:
<persistence-unit name="unit_test">
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect" />
<property name="hibernate.connection.url" value="jdbc:hsqldb:mem:spring" />
<property name="hibernate.connection.driver_class" value="org.hsqldb.jdbcDriver" />
<property name="hibernate.connection.username" value="sa" />
<property name="hibernate.connection.password" value="" />
<property name="hibernate.hbm2ddl.auto" value="create-drop" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
<property name="hibernate.use_sql_comments" value="true" />
<property name="hibernate.cache.use_second_level_cache" value="false"/>
<property name="hibernate.cache.use_query_cache" value="false"/>
</properties>
</persistence-unit>
Spring application_context.xml
<jpa:repositories base-package="sample" />
<jdbc:embedded-database id="dataSource" type="HSQL" />
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="generateDdl" value="true" />
<property name="database" value="HSQL" />
</bean>
</property>
<property name="persistenceUnitName" value="unit_test" />
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
Here is the test code that produces the exception:
#ContextConfiguration(locations={"/application_context.xml"})
public class EmailTest extends AbstractTestNGSpringContextTests{
#Autowired
private EmailRepository emailRespository;
#Autowired
private PersonRepository personRepository;
private Long fredId;
#BeforeMethod
public void setUp() {
Person john = new Person("John");
john = personRepository.save(john);
Person fred = new Person("Fred");
fred = personRepository.save(fred);
Person julio = new Person("Julio");
julio = personRepository.save(julio);
Email mail = new Email("subject", john, Lists.newArrayList(john, fred, julio));
emailRespository.save(mail);
fredId = fred.getId();
}
#Test
#Transactional
public void testTest() throws Exception{
Person fred = personRepository.findOne(fredId);
List<Email> sent = fred.getSent();
List<Email> received = fred.getReceived();
sent.contains(null);
received.contains(null);
int i = 0;
}
}
Saving and finding seems to work fine, but the lazy loaded collections do not work, seemingly because the session is closed, even though the method is #Transactional. Obviously I am missing something, as I see other nearly identical samples.
Edit: Added fetch = FetchType.EAGER to Email entity, no change.

I'm not sure what's closing the Hibernate session, but you could try to add fetch=FetchType.EAGER to the mappings below:
#ManyToOne
private Person sender;
#ManyToMany
private List<Person> recipients;

Spring #Transactional not inserting into table

I am having trouble saving data into the database. I can see the insert SQL statement in the logs and also I write the generated ID to the log. The problem I am facing is the data is not being persisted into the database from the session.
I don't have any trouble fetching the data from the database. The user I am using has read/write access to the database and also I don't get any errors.
I am using Spring 4.2.3, Hibernate 5.5.0, MySQL 5 and Primefaces 5.3.
I search all the forums and found nothing that helped me.
Has anybody faced similar issues?
Model
#Entity
#Table(name = "borrower", uniqueConstraints = {
#UniqueConstraint(columnNames = "borrower_id")
})
public class Borrower implements java.io.Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "borrower_id", unique = true, nullable = false)
private Integer borrowerId;
#Column(name = "borrower_code", nullable = true, length = 20)
private String borrowerCode;
#Column(name = "first_name", nullable = false, length = 45)
private String firstName;
#Column(name = "last_name", nullable = true, length = 45)
private String lastName;
#Column(name = "phone", nullable = true, length = 45)
private String phone;
#Column(name = "borrower_status", nullable = false, length = 15)
private String borrowerStatus;
#Column(name = "email_id", nullable = false, length = 200)
private String emailId;
public Borrower() {
}
// Getters and setters
}
DAO
public class BorrowerDAOImpl extends HibernateDaoSupport implements BorrowerDAO {
private final Logger logger = LogManager.getLogger(getClass());
#Autowired
private SessionFactory sessionFactory;
#Override
public boolean saveBorrower(Borrower borrower) {
try {
Session session = sessionFactory.getCurrentSession();
session.persist(borrower);
session.flush();
logger.info("Borrower '{} {}' with Borrower ID '{}' saved successfully.", borrower.getFirstName(), borrower.getLastName(), borrower.getBorrowerId());
session.disconnect();
return true;
}
catch (Exception e) {
logger.error("Unable to add new borrower '{} {}', error: ", borrower.getFirstName(), borrower.getLastName(), e);
return false;
}
}
}
Service
#Service("borrowerBO")
#SessionScoped
#Transactional(readOnly = true)
public class BorrowerBOImpl implements BorrowerBO {
#Autowired
BorrowerDAO borrowerDAO;
#Transactional(readOnly = false)
#Override
public boolean saveBorrower(Borrower borrower) {
return borrowerDAO.saveBorrower(borrower);
}
public BorrowerDAO getBorrowerDAO() {
return borrowerDAO;
}
public void setBorrowerDAO(BorrowerDAO borrowerDAO) {
this.borrowerDAO = borrowerDAO;
}
}
Spring Config
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd">
<context:annotation-config/>
<context:component-scan base-package="com.movielibrary.bo"/>
<!-- SessionFactory bean -->
<import resource="classpath:HibernateSessionFactory.xml"/>
<!-- Annotate transaction behaviour -->
<tx:annotation-driven transaction-manager="transactionManager"/>
<!-- Transaction manager bean -->
<bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<!-- Bean declaration -->
<bean id="borrowerBO" class="com.movielibrary.bo.impl.BorrowerBOImpl">
<property name="borrowerDAO" ref="borrowerDAO" />
</bean>
<bean id="borrowerDAO" class="com.movielibrary.dao.impl.BorrowerDAOImpl">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
</beans>
Hibernate Configuration
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd">
<!-- Database configuration bean -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost/test_db?relaxAutoCommit=true" />
<property name="username" value="user" />
<property name="password" value="password" />
</bean>
<!-- SessionFactory bean -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.use_sql_comments">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
<!-- Hibernate annotations property -->
<property name="packagesToScan" value="com.movielibrary.model" />
<property name="annotatedClasses">
<list>
<value>com.movielibrary.model.Borrower</value>
</list>
</property>
</bean>
</beans>