Notability date March 2009 Refimprove date March 2009 EJB QL or EJB QL is a portable database query language for Enterprise Java Beans . It is used in Java EE applications. Compared to SQL, however, it is less complex but less powerful as well ref See the Introduction p. 4 of expert one on one J2EE Design and Development , c 2002 wrox press. ref . History The language has been inspired, especially EJB3 QL, by the native Hibernate Query Language HQL ref http docs.jboss.org hibernate stable entitymanager reference en html queryhql.html Chapter 7. EJB QL The Object Query Language ref . Differences EJB QL is a database query language similar to SQL. The used queries are somewhat different from relational SQL, as it uses a so called abstract schema of the enterprise beans instead of the relational model. In other words, EJB QL queries do not use tables and their components, but enterprise beans, their persistent state, and their relationships. The result of an SQL query is a set of rows with a fixed number of columns. The result of an EJB QL query is either a single object, a collection of entity objects of a given type, or a collection of values retrieved from CMP fields. One has to understand the data model of enterprise beans in order to write effective queries ref cite web url http java.sun.com developer EJTechTips 2003 tt0929.html archiveurl http web.archive.org web 20080513195535 http java.sun.com developer EJTechTips 2003 tt0929.html archivedate 2008 05 13 title ADVANCED EJB QL SQL vs. EJB QL Relational and Object Query Languages ref . See also HQL SQL References Reflist DEFAULTSORT Ejb Ql Category Databases Category Information science Category Query languages database stub Interwikis de EJB QL simple EJB QL tr EJB QL ... more details
Marikhali Bridge is a bridge in Bangladesh. The bridge is located along the Dhaka Chittagong Highway , near the more famous Meghna Bridge . ref name EJB http www.bd.emb japan.go.jp jp bdmodel pdf roadsbdresearch.pdf The basic study on the present situation of the previous grant aid project for the bridges in Bangladesh Embassy of Japan in Bangladesh ref Below is the traffic on the bridge in 2004 class wikitable style text align center margin right 60px Vehicle ref name EJB Truck ref name EJB Bus ref name EJB Light Vehicle ref name EJB Motorcycle ref name EJB Total ref name EJB March 2004 5,487 4,545 1,423 812 12,282 References reflist Bangladesh struct stub Bridges in Bangladesh state uncollapsed coord missing Bangladesh Category Bridges in Bangladesh ... more details
Summary Information Description Global Surgery Fellowship Source CHB Plastics Website Date 12 22 08 Author Elizabeth Bierwirth Permission ejb jgm other versions Licensing GFDL migration review ... more details
Refimprove date July 2010 Image Ejb.svg thumb 325px Simple EJB2 Architecture Enterprise JavaBeans EJB ... software enterprise application s. The EJB specification is one of several Java software platform Java Application programming interface API s in the Java EE specification. EJB is a server side model that encapsulation encapsulates the business logic of an application. The EJB specification ... EJB 1.0 and 1.1 in 1999 ref J2EE Design and Development , 2002 Wrox Press Ltd., p. 5. ref and enhanced under the Java Community Process as http www.jcp.org en jsr detail?id 19 JSR 19 EJB 2.0 , http www.jcp.org en jsr detail?id 153 JSR 153 EJB 2.1 , http www.jcp.org en jsr detail?id 220 JSR 220 EJB 3.0 and http jcp.org en jsr detail?id 318 JSR 318 EJB 3.1 . The EJB specification intends to provide ... on the particular problem at hand. Accordingly, the EJB specification details how an application server ... the roles played by the EJB container and the EJBs as well as how to deploy the EJBs in a container. Note that the current EJB specification does not detail anymore how an application server provides ... by criticism POV section date December 2007 The vision was persuasively presented by EJB advocates .... Some developers felt that the API s of the EJB standard were far more complex than those developers ... programmers. Granted, the problems that the EJB standard was attempting to address, such as object .... The EJB 2.0 specification addressed this concern by adding the concept of local interfaces which ... multiple servers. It was introduced largely to address the performance problems that existed with EJB ..., continued to hinder EJB s acceptance. Although high quality developer tools made it easy to create ... to EJB technologies of Hibernate Java Hibernate for persistence and object relational mapping ... to deemphasize EJB use. Sun itself produced an alternative called Java Data Objects. Later, EJBs, Java Data Forms, and many of the ideas underlying Hibernate were combined to form EJB 3.0 which ... more details
s EJB implementation An Interview with David Blevins ref . History OpenEJB was founded by Richard ... was focused entirely on providing these new platforms with a way to quickly get EJB compliance via ... that allowed Tomcat users to plug in OpenEJB to gain EJB support in the Tomcat platform. It was in this same vein of putting an EJB container into a Web server that the project developed the http ... this work that the concept of combing an EJB application with plain unit tests and an embeddable EJB container was born. Originally referred to as a local EJB container and what lead the project to describe ... the Geronimo 1.x cycle. In 2006 when EJB 3.0 was released which had a focus on simplicity, the project ... 1.0 codebase , ported select bits of the 2.0 codebase, and eventually brought it up to the EJB 3.0 ... EJB 3.0, 2.1, 2.0, 1.1 in all modes embedded, standalone or otherwise. JAX WS support JMS support J2EE connector support Can be dropped into Tomcat 5 or 6 adding various JavaEE 5 and EJB 3.0 features ..., OSGi and EJB 3.0 features Bot generated title ref See also EJB Enterprise Java Bean EJB References ... more details
Infobox Software name EasyBeans logo Image Logo easybeans.png screenshot caption developer OW2 Consortium status Active latest release version 1.1.0 latest release date release date 2009 09 10 latest preview version latest preview date operating system Cross platform programming language Java programming language Java genre Enterprise JavaBean license GNU Lesser General Public License website http www.easybeans.net EasyBeans is an open source Enterprise JavaBean s EJB container hosted by the OW2 Consortium . The License used by EasyBeans is the LGPL . EasyBeans is the Enterprise JavaBean EJB 3.0.2C final release .282006 05 02.29 EJB 3.0 container of the JOnAS JOnAS application server . EasyBeans is integrated in the JOnAS JOnAS application server Java EE 5 certified application server. EasyBeans main goal is to ease the development of Enterprise JavaBean s. It uses some new architecture design like the bytecode injection with ASM ObjectWeb tool , Inversion of Control IoC , Plain Old Java Object POJO and can be embedded in OSGi bundles or other frameworks Spring Framework Java Spring , Eclipse software Eclipse plugins, etc. . It aims to provide an Enterprise JavaBean EJB 3.0.2C final release .282006 05 02.29 EJB 3.0 container as specified in the Java EE Java Platform Enterprise Edition Java EE in its fifth version. It means that EJB Types Session bean s Stateless or Stateful , EJB Types Message Driven Bean s MDB are available on EasyBeans. See also JOnAS JOnAS application server Hibernate Java Hibernate OpenEJB External links http www.easybeans.org The EasyBeans developer site http www.easybeans.net The EasyBeans site http www.jcp.org en jsr detail?id 220 JSR 220 EJB 3.0 http www.jcp.org en jsr detail?id 181 JSR 181 Web Services Metadata for the Java Platform Java Persistence API programming software stub Category OW2 Consortium Category Java enterprise platform fr EasyBeans ja EasyBeans ... more details
public class TestServlet extends HttpServlet EJB private HelloWorld helloWorld public ... TestServlet extends HttpServlet EJB private HelloWorld helloWorld public void service HttpServletRequest ... source J2EE 1.4 Remote interface, declares methods clients can invoke on the EJB source ..., destroy and finder methods for the EJB depending on type source lang java import javax.ejb.EJBHome ... Create method used by the Container to create the EJB must return remote interface of EJB public HelloWorld create throws RemoteException, CreateException source The implementing EJB class source ... interface public String getHello throws RemoteException return Hello World Used by the EJB ... InitialContext Looking up the EJB based on its name in JNDI Object objref init.lookup HelloWorld HelloWorldHome ... more details
etc. For example consider accessing an old Enterprise JavaBean Legacy legacy EJB 2 bean. It involved a lot of boiler plate code like getting access to an home interface, then creating finding an EJB ... APIs. In essence a control to a legacy EJB 2 bean ensured that the developer could simply use the control and call any business method of the EJB, using it in the same way as any other Java programming language Java class. When EJB 3 came around, such simplification was already provided by the EJB ... and the ejb jar.xml file were also no longer required... Enterprise JavaBean EJB 3.0.2C final release .282006 05 11.29 EJB ref ref Enterprise JavaBean Example EJB 3 example ref ref Enterprise Java Beans EJB 3.0 is a deep overhaul and simplification of the EJB specification. http www.jboss.org ejb3 ref ref ... the heavyweight programming paradigm in EJB 2.x, the flawed persistence model in EJB 2.x entity beans... In our view, one of the most important changes in EJB 3.1 is the redefinition ... controls were of little further use here. ref ... the EJB 3 client model has essentially standardized much of the value add that the Beehive EJB control offered in terms of simplifying the EJB ... of controls wiz EJB Control, Webservice Control, Database Control and JMS Control. Custom controls ... more details
A Service Implementation Bean SIB , is a term used in Java Platform, Enterprise Edition , for a Java object implementing a web service . It can be either a POJO or a Stateless Session Bean Stateless Session EJB . The Interface Java Java interface of an SIB is called a Service Endpoint Interface SEI . See also Portal Java External links http java.sun.com blueprints guidelines designing webservices html Designing Web Services with the J2EE 1.4 Platform Category Java enterprise platform pt Service Implementation Bean ... more details
Data transfer object DTO , formerly known as value objects or VO , ref name msdn MSDN 2010 . Data Transfer Object. Microsoft MSDN Library. Retrieved from http msdn.microsoft.com en us library ms978717.aspx. ref ref name fowler Fowler, Martin 2010 . Data Transfer Object. Patterns of Enterprise Application Architecture. Retrieved from http martinfowler.com eaaCatalog dataTransferObject.html. ref is a Design pattern computer science design pattern used to transfer data between software application subsystems. DTOs are often used in conjunction with data access object s to retrieve data from a relational database database . ref name msdn ref name fowler Usage The difference between data transfer objects and Business object computer science business objects or data access object s is that a DTO does not have any behavior except for storage and retrieval of its own data method computer science accessor s and mutator method mutator s . Citation needed date April 2010 In a traditional EJB EJB Enterprise JavaBeans architecture, DTOs serve dual purposes first, they work around the problem that entity beans pre ejb 3.0 are not serializable second, they implicitly define an assembly phase where all data to be used by the view are fetched and Marshalling computer science marshalled into the DTOs before returning control to the presentation tier. Citation needed date April 2010 References Reflist External links http anirudhvyas.com root 2008 04 19 abuses of dto pattern in java world Abuses of DTO pattern in Java World http java.sun.com blueprints corej2eepatterns Patterns DataAccessObject.html Core J2EE Patterns Data Access Object http java.sun.com blueprints corej2eepatterns Patterns TransferObject.html Core J2EE Patterns Transfer Object http msdn.microsoft.com en us library ms978717.aspx Data Transfer Object Microsoft MSDN Library DEFAULTSORT Data Transfer Object Category Software design patterns compu prog stub ca Data Transfer Object de Transferobjekt fr Objet de transfert de ... more details
server such as an Enterprise JavaBean EJB server and an application component. It provides an interface ... by general client code such as a servlet or an EJB to manage the transactions. The JTA architecture ... may be used by Java client programs or EJB beans. The UserTransaction.begin method starts .... UserTransaction support in EJB server EJB servers are required to support the UserTransaction interface for use by EJB beans with the BEAN value in the TransactionManagement annotation this is called bean managed transactions or BMT . The UserTransaction interface is exposed to EJB components ... using the general Resource annotation. Thus, an EJB application does not interface with the Transaction Manager directly for transaction demarcation instead, the EJB bean relies on the EJB server .... The underlying interaction between the EJB Server and the TM is transparent to the application the burden of implementing transaction management is on the EJB container and server provider. ref http cds esd.sun.com ESD24 JSCDL ejb 3.0 fr ejb 3 0 fr spec ejbcore.pdf?AuthParam 1269290256 bf79870723e592b88232b28f0bc403bc&TicketId B 2Fw2nRyGS1lMTR1LO1BbkAHl&GroupName CDS&FilePath ESD24 JSCDL ejb 3.0 fr ejb 3 0 fr spec ejbcore.pdf&File ejb 3 0 fr spec ejbcore.pdf JSR 220 Enterprise JavaBeans,Version 3.0, EJB 3.0 Expert Group, Sun Microsystems, 2006 ref The code sample below illustrates the usage of UserTransaction via bean managed transactions in an EJB session bean source lang java Stateless ... foo is exited. Making use of a UserTransaction is thus not necessary in EJB programming, but might be needed ... more details
Microrebooting is a technique used to recover from failures in crash only software systems. Instead of booting rebooting the whole system, only subsets of fine grain components are restarted. The granularity of components is typically finer than the process level e.g., EJB level in Java EE systems . The goal of confining the reboot to fine grain components is threefold to reduce the amount of time it takes for the system to return to service, to minimize the failure s disruption to the system and its users, and to preserve as much in memory application data as possible. The concept was proposed by George Candea while he was a graduate student at Stanford University in 2001. It was reduced to practice in systems such as a satellite ground station control system and a Java EE application server . External links http citeseer.ist.psu.edu candea01recursive.html http citeseer.ist.psu.edu candea02reducing.html http www.cs.stanford.edu candea papers microreboot Category Operating system technology Boot, Microreboot Category Satellite ground stations ... more details
A Java EE application or a Java Platform, Enterprise Edition application is any deployable unit of Java EE functionality. This can be a single Java EE module or a group of modules packaged into an EAR file format EAR file along with a Java EE application deployment descriptor . Java EE applications are typically engineered to be distributed across multiple computing tiers. Enterprise applications can consist of the following EJB modules packaged in JAR file s Web modules packaged in WAR Sun file format WAR files connector modules or Resource Adapter resource adapter s packaged in RAR files Session Initiation Protocol SIP modules packaged in SAR files application client modules Additional JAR files containing dependent classes or other components required by the application Any combination of the above. See also Enterprise software References http java.sun.com javaee reference glossary index.jsp Category Java platform compu stub ... more details
volume is attributed to increase in toll rate in 2002 and seasonal fluctuations. ref name EJB Below ... style text align center margin right 60px Vehicle ref name EJB Truck ref name EJB Bus ref name EJB Light Vehicle ref name EJB Motorcycle ref name EJB Total ref name EJB April 1997 4,674 3,396 1,796 ... using Meghna Bridge transport goods between Dhaka and Chittagong . ref name EJB References ... more details
API. Related Technologies Enterprise JavaBeans The Enterprise JavaBean EJB 3.0, final release 2006 05 02 EJB 3.0 specification itself part of the Java EE 5 platform included a definition of the Java Persistence API. End users do not need an EJB container or a Java EE application server in order to run ... in a separate Java Community Process JSR and specification rather than in the EJB JSR specification. The Java Persistence API replaces the persistence solution of EJB 2.0 CMP Container Managed ... Data Objects API, and the EJB 2.0 Container Managed Persistence CMP API. As of 2009 most products ... accepted By whom date July 2009 that the Java Persistence API is a significant improvement on the EJB ... JBoss accessdate 2008 11 17 quote JSR 220, EJB 3.0 Spec Committee, Gavin King, Bill Burke, Marc ... ejb package summary.html Hibernate Javadoc org.hibernate.ejb Java Persistence API DEFAULTSORT Java ... more details
unreferenced date March 2011 Infobox Software name XDoclet logo screenshot caption collapsible developer latest release version 1.2.3 latest release date release date 2005 05 05 latest preview version latest preview date operating system Cross platform programming language Java programming language Java genre Attribute Oriented Programming for Java programming language Java license BSD license website http xdoclet.sourceforge.net xdoclet br http xdoclet.codehaus.org XDoclet is an open source code generation library that enables Attribute oriented programming for Java programming language Java via insertion of special Javadoc tags. It comes with a library of predefined tags, which simplify coding for various technologies Java EE , Web services , Portlet etc. Example A typical XDoclet comment might look like this source lang java This is the Account entity bean. It is an example of how to use the EJBDoclet tags. see Customer ejb.bean name bank Account type CMP jndi name ejb bank Account local jndi name ejb bank LocalAccount primkey field id schema Customers ejb.finder signature java.util.Collection findAll unchecked true ejb.finder signature java.util.Collection findByName java.lang.String name unchecked true query SELECT OBJECT o FROM Customers AS o WHERE o.name LIKE ?1 ejb.transaction type Required ejb.interface remote class test.interfaces.Account ejb.value object match version 1.5 source Books citation first1 Walls last1 Craig first2 Richards last2 Norman date December 2003 title XDoclet in Action publisher Manning pages 624 isbn 1932394052 url http www.manning.com walls References references External links http xdoclet.sourceforge.net xdoclet index.html XDoclet project site http xdoclet.codehaus.org XDoclet2 project site Categories Category Java platform Category Java development tools Category Java libraries compu library stub Interwikies ca XDoclet de XDoclet es XDoclet fr XDoclet lt XDoclet ja XDoclet nl XDoclet pl XDoclet pt XDoclet ... more details
Java programming language Java Application programming interface API for XML based Remote procedure call RPC JAX RPC allows a Java application to invoke a Java based Web service Web Service with a known description while still being consistent with its Web Services Description Language WSDL description. It can be seen as Java remote method invocation Java RMI s over Web services. JAX RPC 2.0 was renamed JAX WS 2.0 Java API for XML Web Services . JAX RPC 1 is deprecated with Java EE 6. ref http stackoverflow.com questions 3307516 jax ws vs jax rpc 3314458 3314458 JAX WS vs. JAX RPC stackoverflow.com ref It works as follows A Java program invokes a Method computer science method on a Method stub stub local object representing the remote service The stub invokes routines in the JAX RPC Runtime System RS The RS converts the remote method invocation into a SOAP protocol SOAP message The RS transmits the message as an HTTP request The advantage of such a method is that it allows the Web Service to be implemented at server side as a Java Servlet Servlet or Enterprise JavaBean EJB container. Thus, Servlet or EJB applications are made available through Web services. References reflist External links https jax rpc.dev.java.net Sun s JAX RPC page http weblogs.java.net blog kohlert archive 2005 05 jaxrpc 20 renam.html JAX RPC 2.0 renamed to JAX WS 2.0 Category Java API for XML Category Web service specifications compu prog stub de JAX RPC fr JAX RPC ja JAX RPC ko JAX RPC nl JAX RPC pt JAX RPC zh JAX RPC ... more details
Infobox Software name Lomboz logo screenshot Image Lomboz.png 300px Lomboz environment caption Demonstration of Lomboz environment collapsible yes developer OW2 Consortium latest release version 3.3RC1 latest release date release date 2007 08 18 latest preview version 3.3 latest preview date release date 2008 10 29 operating system Cross platform programming language Java programming language Java genre Eclipse software Eclipse plug in for the Java EE license GNU Lesser General Public License website http lomboz.objectweb.org Lomboz is an open source Eclipse software Eclipse plug in for the Java EE development environment. It has means to develop, test, profile and deploy Web, Web services, Java, Java EE and EJB applications. Lomboz supports the most Java EE standard application server runtimes, and supports most popular open source runtimes such as JOnAS . Same as JOnAS, Lomboz is hosted and developed by the OW2 Consortium the development group calls themselves eteration . It is distributed under GNU Lesser General Public License . In July 2006 s this system was sufficiently convenient for the developer, familiar with all main concepts, features and methods of the Java EE platform. It is, however, not oriented to the student who would want to start developing Java EE applications without reading documentation. Lomboz is packaged, integrated and dependent on many other open source Eclipse packages for Java EE development. Lomboz provides Wizards for creating and assembling Java EE modules. JSP editor and code assistant. Support for JBoss , WebLogic , Apache Tomcat , JOnAS and JRun . EJB code generators based on XDoclet . Web Services code generators based on Apache Axis . External links http lomboz.ow2.org Lomboz homepage http www.eclipseplugincentral.com Reviews index req showcontent id 8.html Lomboz review Eclipse plugins Category OW2 Consortium Category Java enterprise platform es Lomboz lt Lomboz ja Lomboz ... more details
Orphan date February 2009 PKUAS Peking University Application Server is a Java Platform, Enterprise Edition J2EE application server developed by the research group of Peking University PKU Bell Labs Software Technologies Joint Lab. The project began in 2001 . Up to 2005 , PKUAS had implemented J2EE 1.4 and Enterprise JavaBean EJB 2.0 specifications. PKUAS group is now working on supporting J2EE 1.5 and EJB 3.0. As a research project, PKUAS provides a platform to experiment with innovative ideas on new generation of software in the Internet environment. Besides the standard services listed in the specifications, e.g. Communication, Naming, Transaction, Security, etc., PKAUS has several distinguished features, including the on line evolution of components, a flexible and extensible interoperability framework, and a reflective management framework. In order to support commercial applications, PKUAS also provides some tools, including a deployment tool which supports the remote deployment of components through a Web interface, and IDE plugins for Eclipse and JBuilder users. PKUAS group is now working with ObjectWeb , a nonprofit international consortium focusing on providing open source middleware . References cite conference first Hong last Mei authorlink coauthors Huang, Gang title PKUAS An Architecture Based Reflective Component Operating Platform booktitle 10th IEEE International Workshop on Future Trends of Distributed Computing Systems FTDCS 04 pages 163 169 year 2004 External links http www.sei.pku.edu.cn belljointlab en index.jsp PKU Bell Labs Software Technologies Joint Lab Homepage Category Java enterprise platform network software stub ... more details
COI date November 2009 Notability Companies date November 2009 Infobox company company name Ghostfire Games LLC company logo company type Private Company foundation 2007 location Austin, TX key people Ed Roman industry Computer and Video game products revenue operating income net income num employees parent subsid homepage http www.ghostfiregames.com footnotes Ghostfire Games is a video game developer and publisher based out of Austin, Texas , founded in late 2007. The company currently specializes in games for the WiiWare platform. ref http games.ign.com objects 142 14276043.html Company Bio IGN ref ref http akas.imdb.com company co0283700 Company Bio IMDB ref Origins Ghostfire Games was started by CEO Ed Roman, a lifelong video game enthusiast, and is his second entrepreneurial venture. Roman first started and sold a company that specialized in advanced enterprise Java technology training and consulting, following his authoring of the book Mastering EJB . ref http www.javacoffeebreak.com articles authorprofiles roman ed index.html Mastering EJB by Ed Roman ref ref http www.linkedin.com companies the middleware company The Middleware Company Acquired ref ref http findarticles.com p articles mi m0EIN is 2002 Feb 7 ai 82593846 The Middleware Company and Ed Roman ref Titles 2008 Helix video game WiiWare 2010 Rage of the Gladiator WiiWare References Reflist External links http www.ghostfiregames.com Official site Category Companies based in Austin, Texas Category Companies established in 2007 Category Video game companies of the United States Category Video game developers Category Video game publishers US videogame company stub ... more details
The Unified Modeling Language UML profile for Enterprise Distributed Object Computing EDOC is a standard of the Object Management Group in support of open distributed computing using model driven architecture and Service Oriented Architecture . Its aim is to simplify the development of component based EDOC systems by providing a UML based modeling framework conforming to the Model Driven Architecture MDA of the Object Management Group OMG . The basis of EDOC is the Enterprise Collaboration Architecture , ECA , meta modeling meta model that defines how roles interact within communities in the performance of collaborative business processes. The seven EDOC specifications EDOC is composed of seven specifications The Enterprise Collaboration Architecture , ECA , The Metamodel and UML Profile for Java and EJB , The Flow Composition Model , FCM , The UML Profile for Patterns , The UML Profile for ECA , The UML Profile for Meta Object Facility , The UML Profile for Relationships External links http www.omg.org technology documents formal edoc.htm OMG EDOC Standard See also Model Driven Engineering MDE Model driven architecture MDA Meta model Meta modeling Meta Object Facility MOF Unified Modeling Language UML Category Unified Modeling Language uml stub ... more details
defines and comes packaged with providers for local java, EJB , JMS , and JCA protocols. That means you can define an EJB or a JMS accessible service directly as a WSDL binding and access it transparently ... accessible as an EJB is now available through messaging middleware via JMS again, you need to fix the code that uses the software. Or let s suppose you have an EJB which is offered as a SOAP ... the EJB directly. Of course, SOAP is a great baseline protocol for platform and language ... is really an EJB? So your java customers pay a performance penalty since you have to use ... that is independent of protocol or location. So whether it is SOAP, an EJB, JMS or potentially .NET ... available as an EJB, you can switch to using RMI IIOP by just changing the service description the WSDL ... more details
EJB container through EasyBeans and is available with an embedded Apache Tomcat Tomcat or Jetty ..., EJB, resources, ... are directly available as OSGi services to all OSGi bundles deployed ... more details
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