. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 The Assignment Operator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307 4.3.13. Ternary Operator (If-Then-Else) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308 4.3.14. The Elvis Operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309 4.3.15. Safe Navigation Operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The #this and #root variables Functions Bean references Ternary Operator (If-Then-Else) The Elvis Operator Safe Navigation operator Collection Selection Collection Projection Expression templating Classes using Spring Introduction Exposing services using RMI Exporting the service using the RmiServiceExporter Linking in the service at the client Using Hessian or Burlap to remotely call services via HTTP Linking in the service on the client Using Burlap Applying HTTP basic authentication to a service exposed through Hessian or Burlap Exposing services using HTTP invokers Exposing the service object Linking

The #this and #root variables Functions Bean references Ternary Operator (If-Then-Else) The Elvis Operator Safe Navigation operator Collection Selection Collection Projection Expression templating Classes using Spring Introduction Exposing services using RMI Exporting the service using the RmiServiceExporter Linking in the service at the client Using Hessian or Burlap to remotely call services via HTTP Linking in the service on the client Using Burlap Applying HTTP basic authentication to a service exposed through Hessian or Burlap Exposing services using HTTP invokers Exposing the service object Linking

........................... 209 Ternary Operator (If-Then-Else) ....................................................................... 209 The Elvis Operator ........................................ ................................................. 210 Safe Navigation operator ................................................................................ 210 Collection Selection ............. ............................ 673 Exporting the service using the RmiServiceExporter ......................................... 673 Linking in the service at the client ................................

........................... 202 Ternary Operator (If-Then-Else) ....................................................................... 202 The Elvis Operator ........................................ ................................................. 202 Safe Navigation operator ................................................................................ 203 Collection Selection ............. ............................ 663 Exporting the service using the RmiServiceExporter ......................................... 663 Linking in the service at the client ................................

concerned with data access and the interaction between the data access layer and the business or service layer. Spring’s comprehensive transaction management support is covered in some detail, followed other options. Of course, you may need other application server capabilities, such as Java Message Service (JMS) and Java EE Connector Architecture (JCA). The Spring Framework gives you the choice of when void rollback(TransactionStatus status) throws TransactionException; } This is primarily a service provider interface (SPI), although you can use it programmatically from your application code. Because

Extensions allow to add custom operators to Flow • Collect operations are suspending functions • map operator supports asynchronous operation (no need for flatMap) since it takes a suspending function parameter reactive.executeAndAwait class PersonRepository(private val operator: TransactionalOperator) { suspend fun initDatabase() = operator.executeAndAwait { insertPerson1() insertPerson2() transactional class PersonRepository(private val operator: TransactionalOperator) { fun updatePeople() = findPeople().map(::updatePerson).transactional(operator) private fun findPeople(): Flow

Extensions allow to add custom operators to Flow • Collect operations are suspending functions • map operator supports asynchronous operation (no need for flatMap) since it takes a suspending function parameter reactive.executeAndAwait class PersonRepository(private val operator: TransactionalOperator) { suspend fun initDatabase() = operator.executeAndAwait { insertPerson1() insertPerson2() transactional class PersonRepository(private val operator: TransactionalOperator) { fun updatePeople() = findPeople().map(::updatePerson).transactional(operator) private fun findPeople(): Flow

............ 188 17.2.1. Exporting the service using the RmiServiceExporter .................................................. 188 17.2.2. Linking in the service at the client ........................ the HessianServiceExporter ......................................... 190 17.3.3. Linking in the service on the client ............................................................................ 190 17 ........................................... 190 17.3.5. Applying HTTP basic authentication to a service exposed through Hessian or Burlap ..............................................................

............ 187 17.2.1. Exporting the service using the RmiServiceExporter .................................................. 187 17.2.2. Linking in the service at the client ........................ the HessianServiceExporter ......................................... 189 17.3.3. Linking in the service on the client ............................................................................ 189 17 ........................................... 189 17.3.5. Applying HTTP basic authentication to a service exposed through Hessian or Burlap ..............................................................