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

Class TransactionMongoManager

java.lang.Object

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

io.github.marcopaglio.booking.transaction.manager.mongo.TransactionMongoManager

public class TransactionMongoManager
extends TransactionManager

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

Field Summary

Fields

Modifier and Type	Field	Description
static final com.mongodb.TransactionOptions	TXN_OPTIONS	Options used to configure transactions.

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

clientRepositoryFactory, LOGGER, reservationRepositoryFactory, transactionHandlerFactory

Constructor Summary

Constructors

Constructor	Description
TransactionMongoManager(com.mongodb.client.MongoClient mongoClient, String databaseName, TransactionHandlerFactory transactionHandlerFactory, ClientRepositoryFactory clientRepositoryFactory, ReservationRepositoryFactory reservationRepositoryFactory)	Constructs a manager for applying code that uses entity repositories using MongoDB 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 MongoDB in a single transaction.
<R> R	doInTransaction(ClientTransactionCode<R> code)	Prepares to execution of code that involves the ClientRepository's method(s) on MongoDB in a single transaction.
<R> R	doInTransaction(ReservationTransactionCode<R> code)	Prepares to execution of code that involves the ReservationRepository's method(s) on MongoDB 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

Field Details

TXN_OPTIONS

public static final com.mongodb.TransactionOptions TXN_OPTIONS

Options used to configure transactions. Note: casually consistency is applied when both read and write concerns has value 'majority'.

Constructor Details

TransactionMongoManager

public TransactionMongoManager(com.mongodb.client.MongoClient mongoClient,
 String databaseName,
 TransactionHandlerFactory transactionHandlerFactory,
 ClientRepositoryFactory clientRepositoryFactory,
 ReservationRepositoryFactory reservationRepositoryFactory)

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

Parameters:

mongoClient - the client connected to the MongoDB database.

databaseName - the name of the MongoDB database.

transactionHandlerFactory - the factory to create ClientSession instances.

clientRepositoryFactory - the factory to create ClientMongoRepository instances.

reservationRepositoryFactory - the factory to create ReservationMongoRepository 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 MongoDB 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 MongoDB 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 MongoDB 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.