Package cz.encircled.joiner.core

Class Joiner

java.lang.Object

cz.encircled.joiner.core.Joiner

public class Joiner
extends Object

Base class of Joiner. Contains basic database operations.

In spring-based environment can be instantiated using spring JoinerConfiguration.

For repository-per-entity approach this class should not be accessed directly. Instead, repositories may implement JoinerRepository.

Author:

Kisel on 26.01.2016.

Constructor Summary

Constructors

Constructor	Description
Joiner(jakarta.persistence.EntityManager entityManager)
Joiner(jakarta.persistence.EntityManager entityManager, JoinerProperties joinerProperties)

Method Summary

Modifier and Type	Method	Description
<T, R> List<R>	find(JoinerQuery<T,R> request)	Execute a query and return the List of results.
<T, R> R	findOne(JoinerQuery<T,R> request)	Execute a query and return a result or null.
<T, R> Stream<R>	findStream(JoinerQuery<T,R> request)	Execute a query and stream results using JPA streaming.
JoinerProperties	getJoinerProperties()
<T, R> void	preprocessRequestQuery(JoinerQuery<T,R> request)
<I, T extends Collection<I>> T	save(T entities)
void	setJoinerProperties(JoinerProperties joinerProperties)
void	setJoinGraphRegistry(JoinGraphRegistry joinGraphRegistry)
<T, R> JoinerJpaQuery	toJPAQuery(JoinerQuery<T,R> request)
Joiner	withProperties(JoinerProperties props)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Joiner

public Joiner(jakarta.persistence.EntityManager entityManager)

Joiner

public Joiner(jakarta.persistence.EntityManager entityManager,
 JoinerProperties joinerProperties)

Method Details

withProperties

public Joiner withProperties(JoinerProperties props)

findOne

public <T,
R> R findOne(JoinerQuery<T,R> request)

Execute a query and return a result or null.

find

public <T,
R> List<R> find(JoinerQuery<T,R> request)

Execute a query and return the List of results.

findStream

public <T,
R> Stream<R> findStream(JoinerQuery<T,R> request)

Execute a query and stream results using JPA streaming. Fetch size is configured using a hint org.hibernate.fetchSize (HibernateHints.HINT_FETCH_SIZE)

Using streaming disables caching and auto-flush for the query.

JPA streaming is supported only by Hibernate ORM.

save

public <I,
T extends Collection<I>> T save(T entities)

save

public <T> T save(T entity)

toJPAQuery

public <T,
R> JoinerJpaQuery toJPAQuery(JoinerQuery<T,R> request)

preprocessRequestQuery

public <T,
R> void preprocessRequestQuery(JoinerQuery<T,R> request)

setJoinGraphRegistry

public void setJoinGraphRegistry(JoinGraphRegistry joinGraphRegistry)

getJoinerProperties

public JoinerProperties getJoinerProperties()

setJoinerProperties

public void setJoinerProperties(JoinerProperties joinerProperties)