lazy initialization exception: no session bound to thread in equals method

**cablepuff** · Jul 4th, 2012, 01:22 PM

Hi i am using spring 3.1 with hibernate 4.3
I have the following base class.

Code:

public abstract class Listing implements Serializable, ListingInterface {
private static final long serialVersionUID = -3724317967386747246L;

private Integer id;
private String name;
private String description;

public Integer getId() {
    return this.id;
}

public String getName() {
    return this.name;
}

public String getDescription() {
    return this.description;
}

@Override
public int hashCode() {
    return new HashCodeBuilder().append(this.getName()).toHashCode();
}

@Override
public boolean equals(final Object obj) {
    if (obj == this) {
        return true;
    }
    if (!(obj instanceof Listing)) {
        return false;
    }
    final Listing other = Listing.class.cast(obj);
    return new EqualsBuilder().append(this.getName(), other.getName())
            .isEquals();
}

@Override
public String toString() {
    return new ToStringBuilder(this).append("id", this.id)
            .append("name", this.name)
            .append("description", this.description).toString();
}

}

a class that extends it.

Code:

public class Location extends Listing {
    // ... some other method. 
    @Override
public boolean equals(final Object obj) {
    if (obj == this) {
        return true;
    }
    if (!(obj instanceof Location)) {
        return false;
    }
    final Location other = Location.class.cast(obj);
    return new EqualsBuilder().append(this.getName(), other.getName())
            .isEquals();
}
}

i have a junit test that extends abstractspringtransactionjunit4context

Code:

@Test
public void testGetLocationGeographyByLocAndGeo() {
    final Location location = this.listingService.getLocationById(2);
    final Geography geography = this.geographyService
            .getGeographyById(LocationGeographyTestCase.TEST_LOAD_ID);
    final LocationGeography locationGeography = this.geographyService
            .getLocationGeographyByLocAndGeo(location, geography);
    Assert.assertEquals(location, locationGeography.getLocation());
    Assert.assertEquals(geography, locationGeography.getGeography());
}

here is the code where the error happens.

Code:

@Override
@Transactional(propagation = Propagation.SUPPORTS, readOnly = true)     
public LocationGeography getLocationGeographyByLocAndGeo(
final Location location, final Geography geography) {                   
      return LocationGeography.class.cast(this.sessionFactory
            .getCurrentSession()
            .getNamedQuery("getLocationGeographyByLocAndGeo")
            .setEntity("location", location)
            .setEntity("geography", geography).uniqueResult()); 

}

part of hbm mapping.

Code:

	<class name="LocationGeography" mutable="false" table="LOCATION_GEOGRAPHY">
		<cache usage="read-only" />
		<composite-id access="field" mapped="false">
			<key-many-to-one name="location" column="LOCATION_ID"
				access="field" class="com.core.listing.domain.Location" />
			<key-many-to-one name="geography" column="GEOGRAPHY_ID"
				access="field" class="Geography" />
		</composite-id>
	</class>

<query name="getLocationGeographyByLocAndGeo">
     <![CDATA[
        from LocationGeography locGeo
        WHERE locGeo.location = :location
        AND locGeo.geography = :geography
      ]]>
        <query-param name="location" type="com.core.listing.domain.Location" />
        <query-param name="geography" type="com.core.geography.domain.Geography" />
    </query>

my error log.

Code:

Tests run: 5, Failures: 0, Errors: 1, Skipped: 1, Time elapsed: 0.543 sec <<< FAILURE!
testGetLocationGeographyByLocAndGeo(com.core.test.LocationGeographyTestCase)  Time elapsed: 0.045 sec  <<< ERROR!
org.springframework.orm.hibernate4.HibernateSystemException: could not initialize proxy - no Session; nested exception is org.hibernate.LazyInitializationException: could not initialize proxy - no Session
    at org.springframework.orm.hibernate4.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:206)
    at org.springframework.orm.hibernate4.HibernateExceptionTranslator.convertHibernateAccessException(HibernateExceptionTranslator.java:56)
    at org.springframework.orm.hibernate4.HibernateExceptionTranslator.translateExceptionIfPossible(HibernateExceptionTranslator.java:43)
    at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:58)
    at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:163)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
    at $Proxy24.getLocationGeographyByLocAndGeo(Unknown Source)
    at com.core.geography.service.impl.GeographyServiceImpl.getLocationGeographyByLocAndGeo(GeographyServiceImpl.java:100)
    at com.core.test.LocationGeographyTestCase.testGetLocationGeographyByLocAndGeo(LocationGeographyTestCase.java:59)
    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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
    at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:53)
    at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:119)
    at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:101)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at org.apache.maven.surefire.booter.ProviderFactory$ClassLoaderProxy.invoke(ProviderFactory.java:103)
    at $Proxy0.invoke(Unknown Source)
    at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:150)
    at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcess(SurefireStarter.java:91)
    at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:69)
Caused by: org.hibernate.LazyInitializationException: could not initialize proxy - no Session
    at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:149)
    at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:195)
    at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:185)
    at com.core.listing.domain.Location_$$_javassist_2.getName(Location_$$_javassist_2.java)
    at com.core.listing.domain.Location.equals(Location.java:129)

None of my other test are having error except this one.

**Marten Deinum** · Jul 5th, 2012, 01:43 AM

Post your full test case, my guess is that it isn't transactional.

Also your dao method has SUPPORTS as the propagation level which doesn't start a transaction it basically doesn't matter if there is or isn't a transaction. For Spring to interact with hibernate and make the getCurrentSession work there has to be an ongoing transaction.

**cablepuff** · Jul 6th, 2012, 08:38 AM

Originally Posted by Marten Deinum

Post your full test case, my guess is that it isn't transactional.

Also your dao method has SUPPORTS as the propagation level which doesn't start a transaction it basically doesn't matter if there is or isn't a transaction. For Spring to interact with hibernate and make the getCurrentSession work there has to be an ongoing transaction.

Code:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {
		"classpath*:/applicationContext.xml"" })
@TransactionConfiguration(transactionManager = "core.transactionManager")
@ActiveProfiles("dev")
public class LocGeoTestCase extends
		AbstractTransactionalJUnit4SpringContextTests {
	@Autowired
	private ListingService listingService;

	@Autowired
	private GeographyService geographyService;

	private final static int TEST_LOAD_ID = 1;

@Test
public void testGetLocationGeographyByLocAndGeo() {
    final Location location = this.listingService.getLocationById(2);
    final Geography geography = this.geographyService
            .getGeographyById(LocationGeographyTestCase.TEST_LOAD_ID);
    final LocationGeography locationGeography = this.geographyService
            .getLocationGeographyByLocAndGeo(location, geography);
    Assert.assertEquals(location, locationGeography.getLocation());
    Assert.assertEquals(geography, locationGeography.getGeography());
}

}

**Marten Deinum** · Jul 9th, 2012, 01:21 AM

You are extending the correct class so your test should be transactional,however I nowhere in your stacktrace get the idea that it actually is transactional. Can you post your hibernate configuration.

**cablepuff** · Jul 10th, 2012, 12:34 AM

Originally Posted by Marten Deinum

You are extending the correct class so your test should be transactional,however I nowhere in your stacktrace get the idea that it actually is transactional. Can you post your hibernate configuration.

hibernate.cfg.xml

Code:

<!DOCTYPE hibernate-configuration SYSTEM
        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
    <session-factory>
        <property name="hibernate.query.substitutions">true 1, false 0</property>
        <mapping resource="Listing.hbm.xml"/>
        <mapping resource="Location.hbm.xml"/>
        <mapping resource="LocationGeography.hbm.xml"/>
        <mapping resource="Geography.hbm.xml"/>   
    </session-factory>
</hibernate-configuration>

applicationContext-test.xml

Code:

 <bean id="sessionFactory"
		class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="configLocation" value="classpath:hibernate.cfg.xml" />
		<property name="hibernateProperties" ref="hibernateProperties" />
		<property name="packagesToScan" value="com.**.*.domain" />
	</bean>
	<util:properties id="hibernateProperties">
		<prop key="hibernate.dialect">${hibernate.dialect}</prop>
		<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
		<prop key="hibernate.format_sql">${hibernate.format_sql}</prop>
		<prop key="hibernate.use_outer_join">${hibernate.use_outer_join}</prop>
		<prop key="hibernate.connection.pool_size">${hibernate.connection.pool_size}</prop>
		<prop key="hibernate.current_session_context_class">${hibernate.current_session_context_class}</prop>
		<prop key="hibernate.cache.region.factory_class">${hibernate.cache.region.factory_class}</prop>
		<prop key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop>
		<prop key="hibernate.cache.use_second_level_cache">${hibernate.cache.use_second_level_cache}</prop>
		<prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop>
	</util:properties>
    <!-- Transaction Manager for the tests -->
	<bean id="core.transactionManager"
		class="org.springframework.orm.hibernate4.HibernateTransactionManager">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>

	<bean
		class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" />
		
	<beans profile="dev">
		<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
			destroy-method="close">
			<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
			<property name="url" value="${ds.url}" />
			<property name="username" value="${ds.username}" />
			<property name="password" value="${dspassword}" />
			<property name="poolPreparedStatements" value="true" />
			<property name="initialSize" value="0" />
			<property name="maxActive" value="${ds.pool.maxActive}" />
			<property name="maxIdle" value="${ds.pool.maxIdle}" />
		</bean>
	</beans>

The problem is other test don't have this problem except this one.

**Marten Deinum** · Jul 10th, 2012, 01:14 AM

In general you shouldn't be messing around with the hibernate.current_session_context_class as that breaks the spring integration for proper tx management. YOu should only change it if you use JTA.

**cablepuff** · Jul 10th, 2012, 11:46 PM

Originally Posted by Marten Deinum

In general you shouldn't be messing around with the hibernate.current_session_context_class as that breaks the spring integration for proper tx management. YOu should only change it if you use JTA.

Thanks. I have properties: hibernate.current_session_context_class=org.spring framework.orm.hibernate4.SpringSessionContext

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