Lazy Load of Hibernate doesn't work in Liferay 7.2 DXP

RE: Lazy Load of Hibernate doesn't work in Liferay 7.2 DXP

2020-08-05T14:23:01Z

Even in 7.2, we are deploying as a war.
Why difficulty in exposing these kinds of things within OSGi.
And can you provide some examples for implementing Hibernate Lazy load in Liferay 7.2.

RE: Lazy Load of Hibernate doesn't work in Liferay 7.2 DXP

2020-08-05T02:34:17Z

OSGi brings a lot of classloader restrictions and requirements into play. It can be difficult exposing these kinds of things within OSGi.

In 6.2 you had a portlet war file and your hibernate was isolated within the web application. This happens to be a construct that hibernate knows how to operate within. You'll have to stick to the same kind of deployment model to get it to work under 7.x.

Lazy Load of Hibernate doesn't work in Liferay 7.2 DXP

2020-08-04T15:02:07Z

We are using hibernate for service interaction. (Not service builder)At one model class, we are using Lazy load as follows:

@OneToOne(orphanRemoval = true, fetch = FetchType.LAZY, cascade = CascadeType.ALL)
@JoinColumn(name = "SCHOOL_ENROLMENTS_ID")
private final SchoolEnrolments enrolments = new SchoolEnrolments();

It was working fine in Liferay 6.2 but after upgrading to 7.2 DXP, It returns the following error while trying to accessing this field.

org.hibernate.LazyInitializationException: could not initialize proxy - no Session
&nbsp;&nbsp; &nbsp;at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:167)
&nbsp;&nbsp; &nbsp;at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:215)
&nbsp;&nbsp; &nbsp;at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:190)