Spring/Spring Mcq Set 18 Sample Test,Sample questions

 A way of letting your process rest in a known condition indefinitely.

 Inside authorizeCustomer, the service queries the server for the any processes waiting at the:-

 JBoss itself supports deploying processes to a directory and loading those, with some configuration.

 jBPM is, fundamentally, a runtime that stores its state and jobs in a database. It uses:-

 Once in the java element named send-verification-email, jBPM will invoke the method:-

 The class(CustomerServiceImpl) provides a few salient methods:-

package com.apress.springrecipes.jbpm.jbpm4.customers;
public interface CustomerService {
void sendWelcomeEmail(Long customerId);
void deauthorizeCustomer(Long customerId);
void authorizeCustomer(Long customerId);
Customer getCustomerById(Long customerId);
Customer createCustomer(String email, String password, String firstName, 
String lastName);
void sendCustomerVerificationEmail(Long customerId);
}

 This provides a set of diagramming notations that describe a business process. This notation is akin to UML activity diagram.

 To make use of jBPM from within a Spring application context.

 To use PostgreSQL, you need to add a the driver library to the classpath.

<dependency>
        <groupId>org.jbpm.jbpm4</groupId>
        <artifactId>jbpm-jpdl</artifactId>
        <version>4.3</version>
</dependency>
Dependency for JBPM 4.

.In the customerService bean, a client will use createCustomer to create a customer record.

<?xml version="1.0" encoding="UTF-8"?>
<process name="RegisterCustomer" xmlns="http://jbpm.org/4.0/jpdl">
          <start>
          <transition to="send-verification-email" />
          </start>
          <java name="send-verification-email" expr="#{customerService}"
          method="sendCustomerVerificationEmail">
          <arg> <object expr="#{customerId}" /> </arg>
          <transition to="confirm-receipt-of-verification-email" />
          </java>
          <state name="confirm-receipt-of-verification-email">
          <transition to="send-welcome-email" />
          </state>
          <java name="send-welcome-email"
          expr="#{customerService}" method="sendWelcomeEmail">
          <arg> <object expr="#{customerId}" /> </arg>
          </java>
</process>

A concurrent execution of multiple threads of execution at the same time, originating from a common thread.

A decision describes a node that is conditional, based on some logic that you inject.

A pause in the action that can only move forward when a known actor or agent in the system moves it forward.

An aggregation of states, activities, and other types of constructs that serializes them.

At the top, we’ve injected some dependencies:

“Service” doesn’t imply any:-

Because our jBPM configuration uses Hibernate, we have to configure the :-

Each department may have its own task list to complete in order to achieve the goals of the overarching process.

In jBPM, a business process is built using jPDL.

In OSGi, anything used by something else is a state.

In the bean, setupProcessDefinitions is run when the bean is created.

Inside the createCustomer method, we use jBPM to start the business process to track the Customer. This is done with the :-

<?xml version="1.0" encoding="UTF-8"?>
<process name="RegisterCustomer" xmlns="http://jbpm.org/4.0/jpdl">
          <start>
          <transition to="send-verification-email" />
          </start>
          <java name="send-verification-email" expr="#{customerService}"
          method="sendCustomerVerificationEmail">
          <arg> <object expr="#{customerId}" /> </arg>
          <transition to="confirm-receipt-of-verification-email" />
          </java>
          <state name="confirm-receipt-of-verification-email">
          <transition to="send-welcome-email" />
          </state>
          <java name="send-welcome-email"
          expr="#{customerService}" method="sendWelcomeEmail">
          <arg> <object expr="#{customerId}" /> </arg>
          </java>
</process>

It’s not too difficult to get jBPM working on JBoss EJB environment.

JBPM supports databases such as:-

jBPM will expose beans using the:-

jBPM, and indeed most workflow engines, passivate state for you, allowing a process to wait on external events :-

On top of Spring Dynamic Modules, SpringSource built SpringSource dm Server, which is a server wired from top to bottom with OSGi and Spring.

OSGi bundles are simply standard .jar files with customized MANIFESTs that OSGi consumes at runtime.

OSGi is a framework.

OSGi provides a layer on top of the JVM’s default class loader.

OSGi—which was formerly known as the:-

Process definition will reference Spring beans using the JBoss expression language.

Spring Dynamic Modules scans our deployed bundles and loads an ApplicationContext (actually, the specific type of the ApplicationContext is OsgiBundleXmlApplicationContext) into memory based on an event, or a trigger.

The authorizeCustomer method also updates the Customer entity, marking it as authorized. From there, execution proceeds to the send-welcome-email java element.

The Bundle-Activator directive describes to the OSGi environment, which class implements :-

The business process file’s name needs to end in :-

The hibernate-session element tells jBPM to reuse an existing Hibernate session:-

The method annotated with @PostConstruct will be run after the bean’s been configured to let the user inject custom initialization logic.

The next bean—the dataSource—is configured entirely at your discretion. The properties are set using properties in the properties file :-

The plug-in produces OSGi–compliant bundles that work in any container.

The spring-transaction-interceptor element is a special element to enable jBPM to defer to the TransactionManager defined in our application context.

To have an annotated class be registered as a Hibernate entity, it needs to be registered with the:-

To start using Spring to smooth over some of the minutiae of resource acquisition and to help build more reliable systems in an OSGi environment.

To use jBPM as a stand-alone process server:-

Tool which dynamically interrogates classes for their imports and generates OSGi–compliant entries.

User component models are:-

When the bundle begins to load and start, it calls the start method of the:-

When we’re integrating with Spring, we modify the transaction-context element and the command-service element.

You’ll split your OSGi–specific Spring configuration and your plain-vanilla Spring configuration into:-