Package io.github.marcopaglio.booking.transaction.manager.postgres

Class TransactionPostgresManager

java.lang.Object

io.github.marcopaglio.booking.transaction.manager.TransactionManager

io.github.marcopaglio.booking.transaction.manager.postgres.TransactionPostgresManager

public class TransactionPostgresManager
extends TransactionManager

An implementation of TransactionManager for managing code executed on PostgreSQL within transactions.

Field Summary

Fields inherited from class io.github.marcopaglio.booking.transaction.manager.TransactionManager

clientRepositoryFactory, LOGGER, reservationRepositoryFactory, transactionHandlerFactory

Constructor Summary

Constructors

Constructor	Description
TransactionPostgresManager(jakarta.persistence.EntityManagerFactory emf, TransactionHandlerFactory transactionHandlerFactory, ClientRepositoryFactory clientRepositoryFactory, ReservationRepositoryFactory reservationRepositoryFactory)	Constructs a manager for applying code that uses entity repositories using PostgreSQL transactions.

Method Summary

Modifier and Type	Method	Description
<R> R	doInTransaction(ClientReservationTransactionCode<R> code)	Prepares to execution of code that involves both ClientRepository's and ReservationRepository's methods on PostgreSQL in a single transaction.
<R> R	doInTransaction(ClientTransactionCode<R> code)	Prepares to execution of code that involves the ClientRepository's method(s) on PostgreSQL in a single transaction.
<R> R	doInTransaction(ReservationTransactionCode<R> code)	Prepares to execution of code that involves the ReservationRepository's method(s) on PostgreSQL in a single transaction.

Methods inherited from class io.github.marcopaglio.booking.transaction.manager.TransactionManager

executeInTransaction, executeInTransaction, executeInTransaction, transactionFailureMsg

Methods inherited from class java.lang.Object

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

Constructor Details

TransactionPostgresManager

public TransactionPostgresManager(jakarta.persistence.EntityManagerFactory emf,
 TransactionHandlerFactory transactionHandlerFactory,
 ClientRepositoryFactory clientRepositoryFactory,
 ReservationRepositoryFactory reservationRepositoryFactory)

Constructs a manager for applying code that uses entity repositories using PostgreSQL transactions.

Parameters:

emf - the entity manager factory used to interact with the persistence provider.

transactionHandlerFactory - the factory to create EntityManager instances.

clientRepositoryFactory - the factory to create ClientPostgresRepository instances.

reservationRepositoryFactory - the factory to create ReservationPostgresRepository instances.

Method Details

doInTransaction

public <R> R doInTransaction(ClientTransactionCode<R> code)
                      throws TransactionException

Prepares to execution of code that involves the ClientRepository's method(s) on PostgreSQL in a single transaction.

Specified by:

doInTransaction in class TransactionManager

Type Parameters:

R - the returned type of executed code.

Parameters:

code - the code to execute.

Returns:

something depending on execution code.

Throws:

TransactionException - if the execution or the commitment of the transaction fails.

doInTransaction

public <R> R doInTransaction(ReservationTransactionCode<R> code)
                      throws TransactionException

Prepares to execution of code that involves the ReservationRepository's method(s) on PostgreSQL in a single transaction.

Specified by:

doInTransaction in class TransactionManager

Type Parameters:

R - the returned type of executed code.

Parameters:

code - the code to execute.

Returns:

something depending on execution code.

Throws:

TransactionException - if the execution or the commitment of the transaction fails.

doInTransaction

public <R> R doInTransaction(ClientReservationTransactionCode<R> code)
                      throws TransactionException

Prepares to execution of code that involves both ClientRepository's and ReservationRepository's methods on PostgreSQL in a single transaction.

Specified by:

doInTransaction in class TransactionManager

Type Parameters:

R - the returned type of executed code.

Parameters:

code - the code to execute.

Returns:

something depending on execution code.

Throws:

TransactionException - if the execution or the commitment of the transaction fails.