This document provides an overview of Java Message Service (JMS) and how it can be used with Java Message-Driven Beans in a Java EE application. It describes key JMS concepts like messaging domains, connection factories, destinations, message producers and consumers. It also summarizes how to implement a simple message-driven bean that acts as an asynchronous listener for JMS messages.
This document provides an overview of Java Message Service (JMS) and how it can be used with Java Message-Driven Beans in a Java EE application. It describes key JMS concepts like messaging domains, connection factories, destinations, message producers and consumers. It also summarizes how to implement a simple message-driven bean that acts as an asynchronous listener for JMS messages.
Solace Integration with Mulesoft
PubSub+ is a platform that enables the design, discovery, streaming and full lifecycle management of events across distributed enterprises. It provides all of the tools necessary to support a modern event-driven architecture. The main components of the platform are PubSub+ Event Brokers, PubSub+ Event Portal and PubSub+ Cloud Console.
Java Messaging Service (JMS) is a Java API that allows applications to asynchronously send and receive messages. It supports both point-to-point and publish-subscribe messaging models. A JMS application consists of JMS clients that produce and consume messages and administered objects like destinations and connection factories that are configured by an administrator.
The document provides an introduction to messaging with Neuron ESB. It discusses the goals of learning about Neuron's hierarchical topic-based pub/sub messaging system. The key concepts covered include Neuron messages, topics, parties, conditions, subscriptions, and topic taxonomy. It provides examples and discusses best practices for structuring topic taxonomies and determining an appropriate structure based on business and technical requirements.
JMS is a Java API that allows applications to asynchronously and loosely couple send and receive messages. It supports both point-to-point and publish/subscribe messaging patterns. A JMS message contains a header, properties, and payload. Properties provide metadata about the message while the payload contains the actual data. Common JMS implementations include ActiveMQ, RabbitMQ, and IBM MQ.
Overview of JMS messaging API.
JMS (Java Messaging Service) is an API for asynchronous message based communication between Java based applications.
JMS implementations (instances that implement the JMS API) are called JMS providers.
JMS defines two messaging domains. Point-to-point queues are typically used between one or multiple message senders and a single message receiver.
Topics are multi-point queues where messages are distributed to multiple receivers. As such topics resemble a black board.
Like many other message oriented middleware technologies, JMS provides advanced functions like persistent message delivery mode or different message acknowledgment modes.
Additionally, messages can be sent and received in a transacted mode thus ensuring that either all or no messages are sent and received.
JMS integrates into EJB (Enterprise Java Beans) through message driven beans.
This document provides an overview of Java Message Service (JMS) and how to use it. JMS allows applications to asynchronously and reliably send and receive messages. It uses Java Naming and Directory Interface (JNDI) to lookup connection information instead of hardcoding addresses. Sample code demonstrates how to publish messages to a topic and subscribe to receive them. JMS provides loose coupling between applications and supports point-to-point and publish-subscribe messaging models.
This document provides an overview of Java Message Service (JMS) and how it can be used with Java Message-Driven Beans in a Java EE application. It describes key JMS concepts like messaging domains, connection factories, destinations, message producers and consumers. It also summarizes how to implement a simple message-driven bean that acts as an asynchronous listener for JMS messages.
Solace Integration with Mulesoft
PubSub+ is a platform that enables the design, discovery, streaming and full lifecycle management of events across distributed enterprises. It provides all of the tools necessary to support a modern event-driven architecture. The main components of the platform are PubSub+ Event Brokers, PubSub+ Event Portal and PubSub+ Cloud Console.
Java Messaging Service (JMS) is a Java API that allows applications to asynchronously send and receive messages. It supports both point-to-point and publish-subscribe messaging models. A JMS application consists of JMS clients that produce and consume messages and administered objects like destinations and connection factories that are configured by an administrator.
The document provides an introduction to messaging with Neuron ESB. It discusses the goals of learning about Neuron's hierarchical topic-based pub/sub messaging system. The key concepts covered include Neuron messages, topics, parties, conditions, subscriptions, and topic taxonomy. It provides examples and discusses best practices for structuring topic taxonomies and determining an appropriate structure based on business and technical requirements.
JMS is a Java API that allows applications to asynchronously and loosely couple send and receive messages. It supports both point-to-point and publish/subscribe messaging patterns. A JMS message contains a header, properties, and payload. Properties provide metadata about the message while the payload contains the actual data. Common JMS implementations include ActiveMQ, RabbitMQ, and IBM MQ.
Overview of JMS messaging API.
JMS (Java Messaging Service) is an API for asynchronous message based communication between Java based applications.
JMS implementations (instances that implement the JMS API) are called JMS providers.
JMS defines two messaging domains. Point-to-point queues are typically used between one or multiple message senders and a single message receiver.
Topics are multi-point queues where messages are distributed to multiple receivers. As such topics resemble a black board.
Like many other message oriented middleware technologies, JMS provides advanced functions like persistent message delivery mode or different message acknowledgment modes.
Additionally, messages can be sent and received in a transacted mode thus ensuring that either all or no messages are sent and received.
JMS integrates into EJB (Enterprise Java Beans) through message driven beans.
This document provides an overview of Java Message Service (JMS) and how to use it. JMS allows applications to asynchronously and reliably send and receive messages. It uses Java Naming and Directory Interface (JNDI) to lookup connection information instead of hardcoding addresses. Sample code demonstrates how to publish messages to a topic and subscribe to receive them. JMS provides loose coupling between applications and supports point-to-point and publish-subscribe messaging models.
The document discusses message-driven beans and Java Messaging Service (JMS). It defines synchronous and asynchronous messaging and explains the need for messaging in software design. It describes JMS elements like the messaging server, clients, and destinations. It provides examples of configuring topic and queue destinations. It also provides examples of message-driven beans that can consume from topics and queues, and JMS client code that acts as producers to topics and queues.
JMS is a Java specification that defines a common way for Java programs to create and send messages asynchronously in a loosely coupled manner, ensuring reliable delivery. It uses providers to implement the messaging functionality and clients interact through connection factories, destinations, and sessions to send and receive messages either point-to-point through queues or publish-subscribe through topics. JMS can also be used with EJB message-driven beans and to transport SOAP messages over JMS.
JMS is a Java specification that defines a common way for Java programs to create and send asynchronous, reliable messages. It uses concepts like queues for point-to-point and topics for publish-subscribe messaging. The JMS API allows clients to connect to a JMS provider to produce and consume messages and can integrate with other Java technologies like EJB and JNDI.
This document provides an overview of JMS (Java Message Service) concepts and ActiveMQ configuration and usage. It discusses JMS programming models, message types, persistence, transactions, ActiveMQ broker configuration including persistence, clustering and monitoring. It also summarizes performance tests comparing ActiveMQ to other messaging systems.
This document summarizes a presentation about JMS integration patterns given by Miyuru Wanninayaka and Isuru Ranawaka of WSO2. It discusses JMS terminology, how to configure the JMS transport in WSO2 ESB, common JMS patterns using ESB as a producer and consumer, and upcoming features in WSO2 ESB including dynamic inbound endpoints and support for MQTT and Apache Kafka.
JavaOne 2016
JMS is pretty simple, right? Once you’ve mastered topics and queues, the rest can appear trivial, but that isn’t the case. The queuing system, whether ActiveMQ, OpenMQ, or WebLogic JMS, provides many more features and settings than appear in the Java EE documentation. This session looks at some of the important extended features and configuration settings. What would you need to optimize if your messages are large or you need to minimize prefetching? What is the best way to implement time-delayed messages? The presentation also looks at dangerous bugs that can be introduced via simple misconfigurations with pooled beans. The JMS APIs are deceptively simple, but getting an implementation into production and tuned correctly can be a bit trickier.
The document provides an overview of the Java Message Service (JMS) API. It discusses how JMS allows for asynchronous and reliable messaging between loosely coupled applications. JMS uses the Java Naming and Directory Interface (JNDI) to abstract provider details and make administrative objects easily organized. Example code is given to demonstrate publishing messages to a topic and subscribing to receive messages from a topic.
This document provides an overview of Java Message Service (JMS) for asynchronous messaging between software components. Key points include:
- JMS allows applications to asynchronously send and receive messages via queues or topics. This allows components that are not available at the same time to communicate.
- Messages sent via JMS remain in queues until a client receives them, ensuring reliable and guaranteed delivery.
- The document demonstrates a simple example of an order fulfillment scenario using JMS, and provides code samples for a basic message producer client.
- Core JMS concepts like providers, clients, destinations, connection factories and message types are defined to explain the JMS programming model.
In depth view of what is tibco EMS and learn topics like
Tibco Ems Delivery Modes
Tibco EMS Server and Administration tool
Message Models
Queues Vs Topics
Topic Publisher
Topic Subscriber
EMS Shared Connection
and find many more points on tibco EMS Server.....
This document discusses Spring's support for messaging using Java Message Service (JMS). It covers the basics of JMS including destinations, point-to-point and publish-subscribe models. It then describes how to configure ActiveMQ as the JMS broker in Spring, including declaring destinations and using JMS templates for sending and receiving messages. It also discusses converting message payloads, setting default destinations, timeouts and Spring's support for message-driven POJOs.
The title refers to a fire in the mountains and lightning in the air, suggesting a natural disaster such as a wildfire started by lightning. No other details are provided in the short, single sentence title. The title alone does not provide much contextual information or substance to summarize further in just 3 sentences.
This document provides an overview of Java Message Service (JMS) and how it can be used with Java Message-Driven Beans in a Java EE application. It describes key JMS concepts like messaging domains, connection factories, destinations, message producers and consumers. It also summarizes how to implement a simple message-driven bean that acts as an asynchronous listener for JMS messages.
The document describes the initial design of a portable automotive hoist called the MI'TY LIFTS by two students, Tyrel Ruch and Mike Holzer. The hoist is intended to safely lift vehicles up to 6000 lbs to a maximum height of 48 inches for home mechanics. It will have a self-contained, portable design powered by an electric motor and lead screw mechanism.
El documento explica qué son los Desarrollos Urbanos Integrales Sustentables (DUIS). Los DUIS son áreas planeadas que promueven un desarrollo urbano ordenado y sustentable integrando infraestructura, vivienda y servicios. El documento describe los antecedentes que llevaron a la necesidad de los DUIS, los tipos de DUIS, y los objetivos y participantes de una misión a España para conocer casos exitosos de DUIS.
The document discusses how the media and consumer landscapes are shifting, giving consumers more options and control over their experiences. As marketing shifts from mass media to personalized "my media," brands have opportunities to create new forms of currency with consumers by moving from interruptive channels to engaging arenas and experiences. The marketing itself can become the product that people connect to and build direct, organic relationships with. This allows brands to create stronger value, time, and relationships with consumers through experiences rather than just attention.
The document discusses Java Message Service (JMS) and its architecture, describing key JMS concepts like connections, sessions, message producers and consumers, and administered objects. It also covers message types and how to implement asynchronous messaging using a message-driven bean within a J2EE application.
The document summarizes JMS (Java Messaging Service), including its architecture, core concepts like messaging domains (point-to-point and publish/subscribe), administered objects like connection factories and destinations, and how to create and use message producers, consumers, listeners and messages. JMS enables loosely coupled, asynchronous communication between distributed applications using messages sent to queues or topics.
The document discusses Java Message Service (JMS) API which allows applications to asynchronously communicate by creating, sending, receiving and reading messages. It describes JMS architecture including administered objects like connection factories and destinations that clients look up, connections to providers, sessions for producing and consuming messages, and message producers and consumers. It also covers point-to-point and publish/subscribe messaging domains and how messages can be consumed synchronously or asynchronously.
JMS (Java Message Service) is an API that allows loosely coupled and asynchronous communication between distributed application components using message queues and topics. It supports point-to-point messaging via queues and publish-subscribe messaging via topics. Mule's JMS transport allows sending and receiving messages to any JMS-compliant message broker. Serialization converts objects to bytes for transmission over JMS and deserialization recreates the objects on the receiving end. Examples demonstrate configuring Mule flows to publish messages to a topic and subscribe to receive them, and to serialize Java objects into messages.
-Explain the basics JMS
- Use API of Java
References
YouTube link :
https://www.youtube.com/playlist?list=PLtDIUAtyP4lhV7CsYfLuIx26UeG4J-ujZ
GitHub :
https://github.com/Ghadeerof
The document discusses message-driven beans and Java Messaging Service (JMS). It defines synchronous and asynchronous messaging and explains the need for messaging in software design. It describes JMS elements like the messaging server, clients, and destinations. It provides examples of configuring topic and queue destinations. It also provides examples of message-driven beans that can consume from topics and queues, and JMS client code that acts as producers to topics and queues.
JMS is a Java specification that defines a common way for Java programs to create and send messages asynchronously in a loosely coupled manner, ensuring reliable delivery. It uses providers to implement the messaging functionality and clients interact through connection factories, destinations, and sessions to send and receive messages either point-to-point through queues or publish-subscribe through topics. JMS can also be used with EJB message-driven beans and to transport SOAP messages over JMS.
JMS is a Java specification that defines a common way for Java programs to create and send asynchronous, reliable messages. It uses concepts like queues for point-to-point and topics for publish-subscribe messaging. The JMS API allows clients to connect to a JMS provider to produce and consume messages and can integrate with other Java technologies like EJB and JNDI.
This document provides an overview of JMS (Java Message Service) concepts and ActiveMQ configuration and usage. It discusses JMS programming models, message types, persistence, transactions, ActiveMQ broker configuration including persistence, clustering and monitoring. It also summarizes performance tests comparing ActiveMQ to other messaging systems.
This document summarizes a presentation about JMS integration patterns given by Miyuru Wanninayaka and Isuru Ranawaka of WSO2. It discusses JMS terminology, how to configure the JMS transport in WSO2 ESB, common JMS patterns using ESB as a producer and consumer, and upcoming features in WSO2 ESB including dynamic inbound endpoints and support for MQTT and Apache Kafka.
JavaOne 2016
JMS is pretty simple, right? Once you’ve mastered topics and queues, the rest can appear trivial, but that isn’t the case. The queuing system, whether ActiveMQ, OpenMQ, or WebLogic JMS, provides many more features and settings than appear in the Java EE documentation. This session looks at some of the important extended features and configuration settings. What would you need to optimize if your messages are large or you need to minimize prefetching? What is the best way to implement time-delayed messages? The presentation also looks at dangerous bugs that can be introduced via simple misconfigurations with pooled beans. The JMS APIs are deceptively simple, but getting an implementation into production and tuned correctly can be a bit trickier.
The document provides an overview of the Java Message Service (JMS) API. It discusses how JMS allows for asynchronous and reliable messaging between loosely coupled applications. JMS uses the Java Naming and Directory Interface (JNDI) to abstract provider details and make administrative objects easily organized. Example code is given to demonstrate publishing messages to a topic and subscribing to receive messages from a topic.
This document provides an overview of Java Message Service (JMS) for asynchronous messaging between software components. Key points include:
- JMS allows applications to asynchronously send and receive messages via queues or topics. This allows components that are not available at the same time to communicate.
- Messages sent via JMS remain in queues until a client receives them, ensuring reliable and guaranteed delivery.
- The document demonstrates a simple example of an order fulfillment scenario using JMS, and provides code samples for a basic message producer client.
- Core JMS concepts like providers, clients, destinations, connection factories and message types are defined to explain the JMS programming model.
In depth view of what is tibco EMS and learn topics like
Tibco Ems Delivery Modes
Tibco EMS Server and Administration tool
Message Models
Queues Vs Topics
Topic Publisher
Topic Subscriber
EMS Shared Connection
and find many more points on tibco EMS Server.....
This document discusses Spring's support for messaging using Java Message Service (JMS). It covers the basics of JMS including destinations, point-to-point and publish-subscribe models. It then describes how to configure ActiveMQ as the JMS broker in Spring, including declaring destinations and using JMS templates for sending and receiving messages. It also discusses converting message payloads, setting default destinations, timeouts and Spring's support for message-driven POJOs.
The title refers to a fire in the mountains and lightning in the air, suggesting a natural disaster such as a wildfire started by lightning. No other details are provided in the short, single sentence title. The title alone does not provide much contextual information or substance to summarize further in just 3 sentences.
This document provides an overview of Java Message Service (JMS) and how it can be used with Java Message-Driven Beans in a Java EE application. It describes key JMS concepts like messaging domains, connection factories, destinations, message producers and consumers. It also summarizes how to implement a simple message-driven bean that acts as an asynchronous listener for JMS messages.
The document describes the initial design of a portable automotive hoist called the MI'TY LIFTS by two students, Tyrel Ruch and Mike Holzer. The hoist is intended to safely lift vehicles up to 6000 lbs to a maximum height of 48 inches for home mechanics. It will have a self-contained, portable design powered by an electric motor and lead screw mechanism.
El documento explica qué son los Desarrollos Urbanos Integrales Sustentables (DUIS). Los DUIS son áreas planeadas que promueven un desarrollo urbano ordenado y sustentable integrando infraestructura, vivienda y servicios. El documento describe los antecedentes que llevaron a la necesidad de los DUIS, los tipos de DUIS, y los objetivos y participantes de una misión a España para conocer casos exitosos de DUIS.
The document discusses how the media and consumer landscapes are shifting, giving consumers more options and control over their experiences. As marketing shifts from mass media to personalized "my media," brands have opportunities to create new forms of currency with consumers by moving from interruptive channels to engaging arenas and experiences. The marketing itself can become the product that people connect to and build direct, organic relationships with. This allows brands to create stronger value, time, and relationships with consumers through experiences rather than just attention.
The document discusses Java Message Service (JMS) and its architecture, describing key JMS concepts like connections, sessions, message producers and consumers, and administered objects. It also covers message types and how to implement asynchronous messaging using a message-driven bean within a J2EE application.
The document summarizes JMS (Java Messaging Service), including its architecture, core concepts like messaging domains (point-to-point and publish/subscribe), administered objects like connection factories and destinations, and how to create and use message producers, consumers, listeners and messages. JMS enables loosely coupled, asynchronous communication between distributed applications using messages sent to queues or topics.
The document discusses Java Message Service (JMS) API which allows applications to asynchronously communicate by creating, sending, receiving and reading messages. It describes JMS architecture including administered objects like connection factories and destinations that clients look up, connections to providers, sessions for producing and consuming messages, and message producers and consumers. It also covers point-to-point and publish/subscribe messaging domains and how messages can be consumed synchronously or asynchronously.
JMS (Java Message Service) is an API that allows loosely coupled and asynchronous communication between distributed application components using message queues and topics. It supports point-to-point messaging via queues and publish-subscribe messaging via topics. Mule's JMS transport allows sending and receiving messages to any JMS-compliant message broker. Serialization converts objects to bytes for transmission over JMS and deserialization recreates the objects on the receiving end. Examples demonstrate configuring Mule flows to publish messages to a topic and subscribe to receive them, and to serialize Java objects into messages.
-Explain the basics JMS
- Use API of Java
References
YouTube link :
https://www.youtube.com/playlist?list=PLtDIUAtyP4lhV7CsYfLuIx26UeG4J-ujZ
GitHub :
https://github.com/Ghadeerof
This document provides an overview of messaging frameworks and Java Message Service (JMS). It defines messaging as communication between disparate systems and explains why messaging is important for enabling asynchronous and reliable communication. The key concepts covered include messaging fundamentals using a message-oriented middleware, common messaging protocols like AMQP and JMS, JMS domains for point-to-point and publish/subscribe messaging, consuming messages synchronously and asynchronously, the JMS API for creating connections and messages, and best practices for building robust JMS applications. It concludes with an example of designing a drone delivery system using JMS queues.
This document discusses Java Message Service (JMS) and how it can be used with MuleSoft's JMS transport to enable asynchronous and reliable messaging between distributed application components. It describes the two JMS messaging models - queues for point-to-point messaging and topics for publish-subscribe. Example code is provided to publish messages to a topic that can be subscribed to by multiple consumers. It also demonstrates how to serialize Java objects to send via JMS and deserialize on the receiving end.
This document provides an overview of Apache ActiveMQ, an open source message broker that implements the Java Message Service (JMS) standard. It discusses JMS concepts like clients, providers, messages, queues, topics and publish/subscribe models. It then describes what ActiveMQ is, how to install it, and how to use its JMS API to send and receive messages. Finally, it briefly mentions other JMS providers and some common use cases for ActiveMQ like transactional messaging, market data distribution, clustering, and integrating messaging with REST APIs.
JMS is a widely-used API that allows for asynchronous and loosely-coupled communication between distributed application components. It supports two messaging models: queues for point-to-point messaging and topics for publish-subscribe. Mule's JMS transport enables sending and receiving messages to queues and topics. The publish-subscribe model allows publishers to send messages to topics that subscribers can register interest in, without publishers and subscribers knowing about each other directly. Examples demonstrate configuring JMS publishers and subscribers in Mule and how JMS handles serializing and deserializing objects.
- Explain the basics JMS
- Use API of Java
References
YouTube link :
https://www.youtube.com/playlist?list=PLtDIUAtyP4lhV7CsYfLuIx26UeG4J-ujZ
GitHub :
https://github.com/Ghadeerof
This presentation is about -
Overview of JMS,
Overview of JMS servers and Modules,
Configuring JMS Servers and Destinations,
for more details visit -
http://vibranttechnologies.co.in/weblogic-classes-in-mumbai.html
This document discusses using Java Message Service (JMS) with MuleSoft's messaging transport to integrate applications. It provides an example of configuring JMS with ActiveMQ to send and receive messages from queues. The key steps are:
1. Import the ActiveMQ JAR library
2. Create an ActiveMQ connector in Mule
3. Use a JMS endpoint to enqueue messages to a queue via an HTTP request
4. Use another JMS endpoint and logger to receive and log messages from the queue
ActiveMQ is an open source message broker that implements the Java Message Service (JMS) API. It allows applications written in different languages to communicate asynchronously. Apache Camel is an open source integration framework that can be used to build messaging routes between different transports and APIs using a simple domain-specific language. It provides mediation capabilities and supports common integration patterns. Both ActiveMQ and Camel aim to simplify integration between disparate systems through message-based communication.
This document discusses JMS queues and provides an example of using a JMS queue with ActiveMQ. It describes JMS and the queue model, then provides steps to set up a Mule application that enqueues messages to an ActiveMQ queue using HTTP and receives messages from the queue using JMS. The example shows importing ActiveMQ libraries, creating an ActiveMQ connector, adding messages to the queue from HTTP and receiving them from the queue using JMS.
This document provides an overview of using a JMS (Java Message Service) implementation like Apache ActiveMQ for asynchronous event processing in a ranker system. It discusses why messaging is useful, challenges in selecting a JMS provider and ActiveMQ, how JMS and point-to-point messaging works, key ActiveMQ features, and some other JMS provider options.
This document provides an overview of different JMS message types including TextMessage, ObjectMessage, MapMessage, ByteMessage, and StreamMessage. It describes key features of each message type such as carrying text payloads for TextMessage, serializable Java objects for ObjectMessage, and name-value pairs for MapMessage. Examples are given showing how to set and get content from messages of each type using the appropriate JMS API methods.
The Java Message Service (JMS) API allows Java applications to create, send, receive, and read messages. It defines a common set of interfaces for messaging implementations to enable communication between software components. JMS supports both point-to-point and publish/subscribe messaging domains. Key concepts in JMS include connections, sessions, message producers/consumers, destinations, and connection factories which are administered objects that clients use to access the JMS provider.
This document provides tips for creating effective PowerPoint slides and avoiding common pitfalls. It discusses best practices for slide structure, fonts, color, backgrounds, graphs, spelling and grammar. Key recommendations include using point form, limiting text per slide, large readable fonts, high contrast between text and background, simple consistent designs, properly labeled graphs, and proofreading. The goal is to clearly convey information visually and keep the audience engaged during the presentation.
This one sentence document refers to a whitepaper labeled "WP-1". It does not provide any other context or details to effectively summarize in 3 sentences or less.
This one sentence document refers to a white paper upload labeled "WP-1". It provides a label but no other context or information about the white paper.
This document provides tips for creating effective PowerPoint slides and avoiding common pitfalls. It recommends outlining the presentation, using a clear slide structure with 1-2 points per slide in bullet form, choosing readable fonts and colors, keeping backgrounds simple, designing graphs and charts clearly, proofreading for spelling and grammar errors, including a conclusion slide to summarize key points, and ending with a question slide to invite audience feedback. Bad practices to avoid include long paragraphs of text per slide, small or hard to read fonts, distracting animations or backgrounds, and poorly designed graphs without labels or titles.
This document provides tips for creating effective PowerPoint slides and avoiding common pitfalls. It discusses best practices for slide structure, fonts, color, backgrounds, graphs, spelling and grammar. Key recommendations include using point form, limiting text per slide, large readable fonts, high contrast between text and background, simple consistent designs, properly labeled graphs, and proofreading. The goal is to clearly convey information visually and keep the audience engaged during the presentation.
This document provides an overview of software testing principles and processes. It discusses why testing is necessary, the fundamental test process, and principles like prioritization of tests and regression testing. The key points are:
1) Testing is necessary to find faults, assess quality, and build confidence, but can never prove that software is completely correct.
2) The test process involves planning, specification, execution, recording, and checking completion criteria.
3) Prioritization of tests is important to focus on the most important and risky areas given time constraints. Regression testing checks for unintended effects of fixes.
This document provides an overview of software testing principles and processes. It discusses why testing is necessary, the fundamental test process, and psychology of testing. Key aspects covered include re-testing and regression testing to check for new issues after fixes, prioritizing tests based on risk, and ensuring independence in testing. The goal of testing is to both build confidence and find faults in the software.
Cisco is simplifying and consolidating its IOS packaging from 44 feature sets to 8 packages. This will provide consistency in image names and software pricing. The new packages are aimed at simplifying selection, facilitating feature parity across platforms, and offering minimal disruption for existing customers.
The document discusses Cisco's plans to simplify and consolidate its IOS packaging into 8 standardized packages. The goals are to simplify image selection, facilitate feature parity across hardware, provide consistent naming and pricing. Currently, image selection is complex with 44 feature sets. The new packages will reduce disruption for existing customers.
The document discusses Cisco's plans to simplify and consolidate its IOS packaging into 8 standardized packages. The goals are to simplify image selection, facilitate feature parity across hardware, provide consistent naming and pricing. Currently, image selection is complex with 44 feature sets. The new packages will reduce disruption for existing customers.
Cisco is simplifying and consolidating its IOS packaging from 44 feature sets to 8 packages. This will provide consistency in image names and software pricing. The new packages are aimed at simplifying selection, facilitating feature parity across platforms, and offering minimal disruption for existing customers.
This one sentence document refers to a white paper upload labeled "WP-1". It provides a label but no other context or information about the white paper itself.
This one sentence document refers to a white paper upload labeled "WP-1". It provides a label but no other context or information about the white paper.
This one sentence document refers to a white paper upload labeled "WP-1". It provides a label but no other context or information about the white paper.
This one sentence document refers to a white paper upload labeled "WP-1". It provides a label but no other context or information about the white paper.
This document provides an overview of software testing principles and processes. It discusses why testing is necessary, the fundamental test process, and principles like prioritization of tests and regression testing. The key points are:
1) Testing is necessary to find faults, assess quality, and build confidence, but can never prove that software is completely correct.
2) The test process involves planning, specification, execution, recording, and checking completion criteria.
3) Prioritization of tests is important to focus on the most important and risky areas given time constraints. Regression testing checks for unintended effects of fixes.
Life insurance provides a death benefit to beneficiaries and replaces lost income if the insured passes away. There are several types of life insurance including term, whole, universal, and variable policies. Term insurance provides coverage for a set period of time, whole life provides permanent coverage, universal offers flexible premiums and coverage amounts, and variable policies allow investing premiums in markets. Life insurance proceeds are not taxed and there is no tax on cash value accumulated over age 65.
Life insurance provides a death benefit to beneficiaries and replaces lost income if the insured passes away. There are several types of life insurance including term, whole, universal, and variable policies. Term insurance provides coverage for a set period of time, whole life provides permanent coverage, universal offers flexible premiums and coverage amounts, and variable policies allow investing premiums in markets. Life insurance proceeds are not taxed and there is no tax on cash value accumulated over age 65.
This document provides an overview of Java Message Service (JMS) and how it can be used with Java Message-Driven Beans in a Java EE application. It describes key JMS concepts like messaging domains, connection factories, destinations, message producers and consumers. It also summarizes how to implement a simple message-driven bean that acts as an asynchronous listener for JMS messages.
2. What is Messaging
Messaging
* It enables distributed communication that is
loosely coupled.
• Sender and receiver need not know anything about each other (except
the destination and message format)
* Messaging is a peer to peer facility.
• A messaging client can send mail to and receive messages from any
other client.
• messaging agent
3. JMS API
• To create, send, receive, and read messages.
• Messages are
• Asynchronous:
• Reliable:
Circumstances When We can Use JMS :
• The provider wants the components not to depend on information
about other components' interfaces, so that components can be easily
replaced.
• The provider wants the application to run whether or not all
components are up and running simultaneously.
• The application business model allows a component to send
information to another and to continue to operate without receiving an
immediate response
4. JMS Architecture
A JMS provider: implements the JMS interfaces and provides
administrative and control features.
JMS clients: are the programs or components, written in the Java
programming language, that produce and consume messages.
Messages: are the objects that communicate information between JMS
clients.
Administered objects: are preconfigured JMS objects created by an
administrator for the use of clients. The two kinds of administered objects
are destinations and connection factories.
Native clients: are programs that use a messaging product's native
client API instead of the JMS API. An application first created before the
JMS API became available.
6. Messaging Domains
• Point-to-Point
• Concept of message queues, senders and receivers.
• Queues retain all messages sent to them until the messages are
consumed or until the messages expire.
• Characteristic
• Each message has only one consumer.
• A sender and a receiver of a message have no timing dependencies.
• The receiver acknowledges the successful processing of a message.
• When To Use?
8. Messaging Domains
• Publish/Subscribe
• Concept of topic.
• Publishers and subscribers are generally anonymous may dynamically
publish or subscribe to the content hierarchy.
• Topics retain messages only as long as it takes to distribute them to
current subscribers.
• Pub/sub messaging has the following characteristics.
• Each message may have multiple consumers.
• Publishers and subscribers have a timing dependency.
• durable subscriptions
• When to use?
10. Message Consumption
• Messages can be consumed in either of two ways:
• Synchronously. A subscriber or a receiver explicitly fetches the message from
the destination by calling the receive method.
• Asynchronously. A client can register a message listener with a consumer. A
message listener is similar to an event listener.
11. Administered Objects
• Two parts of a JMS application--
destinations and connection
factories--are best maintained
administratively rather than
programmatically.
• JMS clients access these objects
through interfaces.
12. Administered Objects
• Connection Factories
A connection factory is the object a client uses to create a connection with a provider. A
pair of connection factories come preconfigured with the J2EE SDK and are accessible as
soon as you start the service.
We can use the default connection factory objects, to create connections.
At the beginning of a JMS client program, perform a JNDI API lookup of the connection
factory.
Following code fragment obtains an InitialContext object and look up the
QueueConnectionFactory and the TopicConnectionFactory by name:
Context ctx = new InitialContext();
QueueConnectionFactory queueConnectionFactory = (QueueConnectionFactory)
ctx.lookup("QueueConnectionFactory");
TopicConnectionFactory topicConnectionFactory = (TopicConnectionFactory)
ctx.lookup("TopicConnectionFactory");
j2eeadmin -addJmsFactory jms/EarthQCF queue
13. Destinations
• A destination is the object a client uses to specify the target of messages it
produces and the source of messages it consumes. In the PTP messaging
domain, destinations are called queues, and you use the following J2EE SDK
command to create them:
• j2eeadmin -addJmsDestination queue_name queue
• In the pub/sub messaging domain, destinations are called topics, and you use
the following J2EE SDK command to create them:
• j2eeadmin -addJmsDestination topic_name topic
• A JMS application may use multiple queues and/or topics.
• In addition to looking up a connection factory, you usually look up a
destination.
Example: code performs a JNDI API lookup of the previously created topic
“MyTopic” and assigns it to a Topic object:
Topic myTopic = (Topic) ctx.lookup("MyTopic");
Code to look up a queue named “MyQueue” and assigns it to a Queue object:
Queue myQueue = (Queue) ctx.lookup("MyQueue");
14. Connections
• A connection encapsulates a virtual connection with a JMS provider.
• For example, once we have a QueueConnectionFactory or a
TopicConnectionFactory object, we can use it to create a connection:
QueueConnection queueConnection =
queueConnectionFactory.createQueueConnection();
TopicConnection topicConnection =
topicConnectionFactory.createTopicConnection();
On application completion, we need to close any connections that we have
created.
queueConnection.close();
topicConnection.close();
Before our application can consume messages, we must call the connection's
start method.
15. Sessions
• A session is a single-threaded context for producing and consuming messages.
• Are use to create message producers, message consumers, and messages.
• Provides a transactional context.
• Come in two forms, implementing either the QueueSession or the TopicSession
interface. Eg. Connection object
• Example, TopicConnection object created, can be use to create a
TopicSession:
TopicSession topicSession =
topicConnection.createTopicSession(false,Session.AUTO_ACKNOWLEDGE);
Similarly, can use a QueueConnection object to create a QueueSession:
QueueSession queueSession = queueConnection.createQueueSession(true, 0);
16. Message Producers
• A message producer is an object created by a session and is used to send
messages to a destination.
• The PTP form of a message producer implements the QueueSender interface.
• The pub/sub form implements the TopicPublisher interface.
eg. QueueSession to create a sender for the queue myQueue, and use a TopicSession to
create a publisher for the topic myTopic:
QueueSender queueSender = queueSession.createSender(myQueue);
TopicPublisher topicPublisher = topicSession.createPublisher(myTopic);
• Once created a message producer, can use it to send messages.
queueSender.send(message);
With a TopicPublisher, use the publish method:
topicPublisher.publish(message);
If created an unidentified producer, use the overloaded send or publish
method that specifies the destination as the first parameter.
17. Message Consumers
• Is an object created by a session and is used for receiving messages sent to a
destination.
The PTP form of message consumer implements the QueueReceiver interface. The
pub/sub form implements the TopicSubscriber interface.
QueueReceiver queueReceiver = queueSession.createReceiver(myQueue);
TopicSubscriber topicSubscriber = topicSession.createSubscriber(myTopic);
• Once created a message consumer, it becomes active, and can use it to receive
messages.
• Message delivery does not begin until we start the connection created earlier, by calling
the start method.
• With either a QueueReceiver or a TopicSubscriber, use the receive method to consume a
message synchronously. Can use this method at any time after calling start method:
queueConnection.start();
Message m = queueReceiver.receive();
topicConnection.start();
Message m = topicSubscriber.receive(1000);
// time out after a second
To consume a message asynchronously use message Listener.
18. Message Listeners
• This is an object that acts as an asynchronous event handler for messages.
• onMessage method.
• setMessageListener method.
MessageListener listener=new myListener();
consumer.setMessageListener(listener);
• After registering the message listener, call the start method on the
QueueConnection or the TopicConnection to begin message delivery.
• A message listener is not specific to a particular destination type **.
• onMessage method should handle all exceptions.
• The session used to create the message consumer serializes the execution of
all message listeners registered with the session. At any time, only one of the
session's message listeners is running.
19. Message Selectors
• If messaging application needs to filter messages it receives, can use this JMS
API.
• Message selector API assigns the task of message selection to JMS client
reducing overhead of application.
• A message selector is a String that contains an expression.
• The createReceiver, createSubscriber, and createDurableSubscriber
methods each have a form that allows you to specify a message selector as an
argument when you create a message consumer.
• The message consumer then receives only messages whose headers and
properties match the selector.
20. Messages
• The ultimate purpose of a JMS application is to produce and to consume
messages that can then be used by other software applications. JMS messages
have a basic format that is simple but highly flexible.
• A JMS message has three parts:
• A header.
• Properties (optional).
• A body (optional).
21. Message Headers
• A JMS message header contains a
number of predefined fields.
• Each header field has associated
setter and getter methods. Some
header fields are intended to be set
by a client, but many are set
automatically by the send or the
publish method, which overrides
any client-set values.
Header Field Set By
JMSDestination send or publish
method
JMSDeliveryMode send or publish
method
JMSExpiration send or publish
method
JMSPriority send or publish
method
JMSMessageID send or publish
method
JMSTimestamp send or publish
method
JMSCorrelationID Client
JMSReplyTo Client
JMSType Client
JMSRedelivered JMS provider
22. Message Properties
• Can create and set properties for messages if need values in addition to those
provided by the header fields.
• Can use properties to provide compatibility with other messaging systems, or
can use them to create message selectors For an example of setting a property
to be used as a message selector.
• The JMS API provides some predefined property names that a provider may
support. The use of either predefined properties or user-defined properties is
optional.
23. Message Bodies
• The JMS API defines five message body formats called message types,
which allow to send and to receive data in many different forms and
provide compatibility with existing messaging formats.
• JMS API provides methods for creating messages of each type and for
filling in their contents.
24. • Eg. To create and send a TextMessage to a queue,
TextMessage message = queueSession.createTextMessage();
message.setText(msg_text); // msg_text is a String
queueSender.send(message);
• Eg. To receive a message sent from queue,
Message m = queueReceiver.receive();
if (m instanceof TextMessage) {
TextMessage message = (TextMessage) m;
System.out.println("Reading message: " + message.getText());
} else { // Handle error }
25. Exception Handling
• The root class for exceptions thrown by JMS API methods is JMSException.
• Catching JMSException provides a generic way of handling all exceptions
related to the JMS API.
• The JMSException class includes the following subclasses, which are described
in the API documentation:
IllegalStateException
InvalidClientIDException
InvalidDestinationException
InvalidSelectorException
JMSSecurityException
MessageEOFException
MessageFormatException
MessageNotReadableException
MessageNotWriteableException
ResourceAllocationException
TransactionInProgressException
TransactionRolledBackException
28. JMS API in a J2EE Application
• Since the J2EE1.3 , the JMS API has been an integral part of the platform
• J2EE components can use the JMS API to send messages that can be consumed
asynchronously by a specialized Enterprise Java Bean
message-driven bean
• acts as a listener for the JMS, processing messages asynchronously
Enterprise Java Beans
• EJB is a server-side component that encapsulates the business logic of an
application
• EJB simplifies the development of large, distributed applications
EJB Container provides system-level services
• e.g. transaction management, authorization
29. JMS with EJB Example
EJB Container automatically performs several setup tasks that
standalone client has to do:-creating a msgconsumer
instead, you associate the message-driven bean with a
destination and connection factory at deployment time
30. Life Cycle -Message-Driven Bean
• To create a new instance of a message-driven bean, the container instantiates
the bean and then
• Calls the setMessageDrivenContext method to pass the context object to the
instance
• Calls the instance's ejbCreate method Figure 6.1 shows the life cycle of a
message-driven bean.
31. Creating the J2EE Application
• Writing and compiling the components of this application involve
• Coding the application client
• Coding the message-driven bean
• Compiling the source files
• Starting the J2EE server and the Application Deployment Tool
• Creating a queue
• Creating the J2EE application
• Packaging the application client
• Packaging the message-driven bean
• Checking the JNDI API names ("JNDI names")
32. MDB Example
public class MB implements MessageDrivenBean,
MessageListener{
public void ejbCreate(){}
public void ejbRemove(){}
public void setMessageDrivenContext(MessageDrivenContext mdc){}
pubic void onMessage(Message m){
//do computation on the incoming message
try{ if (m instanceof TextMessage)
System.out.println(“MBean: message”+m.getText());
}catch(JMSException exp){ ...}
}
}
Editor's Notes
Tip: Can use a QueueSession to create a receiver for the queue myQueue, and TopicSession to create a subscriber for the topic myTopic
Once message delivery begins, the message consumer automatically calls the message listener's onMessage method whenever a message is delivered. The onMessage method takes one argument of type Message, which the method can cast to any of the other message types.
**The same listener can obtain messages from either a queue or a topic, depending on whether the listener is set by a QueueReceiver or a TopicSubscriber object.
-Every message has a unique identifier, represented in the header field JMSMessageID.
-The value of another header field, JMSDestination, represents the queue or the topic to which the message is sent.
-Other fields include a timestamp and a priority level.