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  • OpenJDK pour MacOS : le projet a débuté, les premiers codes sont disponibles

    OpenJDK pour MacOS : le projet a débuté Les premiers codes sont disponibles Mise à jour du 13/01/2011 par Idelways Les premiers codes de la version pour MacOS X du Java Development Kit 7 (dans le cadre du projet OpenJDK) sont disponibles. Il s'agit du port d'un code initial destiné à BSD (UNIX). Ce code est téléchargeable sur le site de OpenJDK, dans le projet « MacOS X Port ». Une mailing-list et un wiki ont également été ajouté, et bientôt un gestionnaire de rapports de bugs Pour mémoire, Apple avait provoqué un vent de panique dans la communauté Java en déclarant à la mi-novembre 2010 qu'il ne comptait...

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  • How to protect UI components using OPSS Resource Permissions

    - by frank.nimphius
    v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Normal 0 false false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} table.MsoTableGrid {mso-style-name:"Table Grid"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-priority:59; mso-style-unhide:no; border:solid black 1.0pt; mso-border-alt:solid black .5pt; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-border-insideh:.5pt solid black; mso-border-insidev:.5pt solid black; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";} ADF security protects ADF bound pages, bounded task flows and ADF Business Components entities with framework specific JAAS permissions classes (RegionPermission, TaskFlowPermission and EntityPermission). If used in combination with the ADF security expression language and security checks performed in Java, this protection already provides you with fine grained access control that can also be used to secure UI components like buttons and input text field. For example, the EL shown below disables the user profile panel tabs for unauthenticated users: <af:panelTabbed id="pt1" position="above">   ...   <af:showDetailItem        text="User Profile" id="sdi2"                                       disabled="#{!securityContext.authenticated}">   </af:showDetailItem>   ... </af:panelTabbed> The next example disables a panel tab item if the authenticated user is not granted access to the bounded task flow exposed in a region on this tab: <af:panelTabbed id="pt1" position="above">   ...   <af:showDetailItem text="Employees Overview" id="sdi4"                        disabled="#{!securityContext.taskflowViewable         ['/WEB-INF/EmployeeUpdateFlow.xml#EmployeeUpdateFlow']}">   </af:showDetailItem>   ... </af:panelTabbed> Security expressions like shown above allow developers to check the user permission, authentication and role membership status before showing UI components. Similar, using Java, developers can use code like shown below to verify the user authentication status: ADFContext adfContext = ADFContext.getCurrent(); SecurityContext securityCtx = adfContext.getSecurityContext(); boolean userAuthenticated = securityCtx.isAuthenticated(); Note that the Java code lines use the same security context reference that is used with expression language. But is this all that there is? No ! The goal of ADF Security is to enable all ADF developers to build secure web application with JAAS (Java Authentication and Authorization Service). For this, more fine grained protection can be defined using the ResourcePermission, a generic JAAS permission class owned by the Oracle Platform Security Services (OPSS).  Using the ResourcePermission  class, developers can grant permission to functional parts of an application that are not protected by page or task flow security. For example, an application menu allows creating and canceling product shipments to customers. However, only a specific user group - or application role, which is the better way to use ADF Security - is allowed to cancel a shipment. To enforce this rule, a permission is needed that can be used declaratively on the UI to hide a menu entry and programmatically in Java to check the user permission before the action is performed. Note that multiple lines of defense are what you should implement in your application development. Don't just rely on UI protection through hidden or disabled command options. To create menu protection permission for an ADF Security enable application, you choose Application | Secure | Resource Grants from the Oracle JDeveloper menu. The opened editor shows a visual representation of the jazn-data.xml file that is used at design time to define security policies and user identities for testing. An option in the Resource Grants section is to create a new Resource Type. A list of pre-defined types exists for you to create policy definitions for. Many of these pre-defined types use the ResourcePermission class. To create a custom Resource Type, for example to protect application menu functions, you click the green plus icon next to the Resource Type select list. The Create Resource Type editor that opens allows you to add a name for the resource type, a display name that is shown when granting resource permissions and a description. The ResourcePermission class name is already set. In the menu protection sample, you add the following information: Name: MenuProtection Display Name: Menu Protection Description: Permission to grant menu item permissions OK the dialog to close the resource permission creation. To create a resource policy that can be used to check user permissions at runtime, click the green plus icon in the Resources section of the Resource Grants section. In the Create Resource dialog, provide a name for the menu option you want to protect. To protect the cancel shipment menu option, create a resource with the following settings Resource Type: Menu Protection Name: Cancel Shipment Display Name: Cancel Shipment Description: Grant allows user to cancel customer good shipment   A new resource Cancel Shipmentis added to the Resources panel. Initially the resource is not granted to any user, enterprise or application role. To grant the resource, click the green plus icon in the Granted To section, select the Add Application Role option and choose one or more application roles in the opened dialog. Finally, you click the process action to define the policy. Note that permission can have multiple actions that you can grant individually to users and roles. The cancel shipment permission for example could have another action "view" defined to determine which user should see that this option exist and which users don't. To use the cancel shipment permission, select the disabled property on a command item, like af:commandMenuItem and click the arrow icon on the right. From the context menu, choose the Expression Builder entry. Expand the ADF Bindings | securityContext node and click the userGrantedResource option. Hint: You can expand the Description panel below the EL selection panel to see an example of how the grant should look like. The EL that is created needs to be manually edited to show as #{!securityContext.userGrantedResource[               'resourceName=Cancel Shipment;resourceType=MenuProtection;action=process']} OK the dialog so the permission checking EL is added as a value to the disabled property. Running the application and expanding the Shipment menu shows the Cancel Shipments menu item disabled for all users that don't have the custom menu protection resource permission granted. Note: Following the steps listed above, you create a JAAS permission and declaratively configure it for function security in an ADF application. Do you need to understand JAAS for this? No!  This is one of the benefits that you gain from using the ADF development framework. To implement multi lines of defense for your application, the action performed when clicking the enabled "Cancel Shipments" option should also check if the authenticated user is allowed to use process it. For this, code as shown below can be used in a managed bean public void onCancelShipment(ActionEvent actionEvent) {       SecurityContext securityCtx =       ADFContext.getCurrent().getSecurityContext();   //create instance of ResourcePermission(String type, String name,   //String action)   ResourcePermission resourcePermission =     new ResourcePermission("MenuProtection","Cancel Shipment",                            "process");        boolean userHasPermission =          securityCtx.hasPermission(resourcePermission);   if (userHasPermission){       //execute privileged logic here   } } Note: To learn more abput ADF Security, visit http://download.oracle.com/docs/cd/E17904_01/web.1111/b31974/adding_security.htm#BGBGJEAHNote: A monthly summary of OTN Harvest blog postings can be downloaded from ADF Code Corner. The monthly summary is a PDF document that contains supporting screen shots for some of the postings: http://www.oracle.com/technetwork/developer-tools/adf/learnmore/index-101235.html

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  • Elastic PaaS with WebLogic and OpenStack, part I

    - by Jernej Kaše
    In my previous blog I described the steps to get OpenStack on Solaris up and running. Now we'll explore how WebLogic and OpenStack can work together to deliver truly elastic Middleware Platform as a Service. Middleware / Platform as a Service goals First, let's define what PaaS should be : PaaS offerings facilitate the deployment of applications without the complexity of managing the underlying hardware and software and provisioning hosting capabilities. To break it down: - PaaS provides a complete platform for hosting solutions (Java EE, SOA, BPM, ...) - Infrastructure provisioning (virtual machine, OS, platform) and managing is hidden from the PaaS user [administrator or developer] - Additionally, PaaS could / should define target SLAs, and the platform should ensure the SLAs are meet automatically. PaaS use case To make it more tangible, we have an IT Administrator who has the requirement to deploy a Java EE enterprise application. The application is used by external users who need to submit reports by the end of each month. As a result, the number of concurrent users will fluctuate, with expected huge spikes around the end of each month. The SLA agreed by the management is that no more than 100 requests should be waiting to be processes at any given time. In addition, the IT admin has no more than 3 days to have the platform and the application operational. The Challenges Some of the challenges the IT Administrator is facing are: - how are we going to ensure the processing power? - how are we going to provision the (virtual) machines, Java EE platform and deploy the application? - how are we going to monitor the SLA? - how are we going to react to SLA, and increase capacity?  The Ideal Solution Ideally, the whole process should be automated, "set it and forget" and require no human interaction: - The vendor packages the solution as deployable image(s) - The images are deployed to the IaaS - From there, automated processes take care of SLA  Solution Architecture with WebLogic 12c, Dynamic Clusters, OpenStack & Solaris OracleSolaris provides OS and virtualisation through Solaris Zones OpenStack is a part of Solaris 11.2 and provides Cloud Management (console and API) WebLogic 12c with Dynamic Clusters provides the Platform Trafic Manager provides load balancing On top of out that, we are going to implement a small control script - Cloud Manager - which is going to monitor SLA through WebLogic Diagnostic Framework. In case there are more than 100 pending requests, the script will: - provision a new virtual machine based on image which is configured for the WebLogic domain - add the machine to WebLogic domain - Increase the number of servers in dynamic cluster - Start the newly provisioned server  Stay tuned for part II The hole solution with working demo will be presented in one of our Partner WebCasts in June, exact date TBA. Jernej Kaše is a Fusion Middleware Specialist working closely with Oracle Partners in the ECEMEA region to grow their business by leveraging Oracle technology.

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  • Unable to install libcairo2:i386 on ubutu 12.10 X86_64

    - by user63726
    I get the following error. I think it is a bug. Is there a workaround? There is mismatch between the 32 and 64 bit version of this package. apt-get install libcairo2:i386 Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libatk-wrapper-java-jni : Depends: libgtk2.0-0 (= 2.12.0) but it is not going to be installed Depends: libatk-wrapper-java (= 0.30.4-0ubuntu4) but it is not going to be installed E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

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  • FISL 12, Sao Jose Do Rio Preto, Brasilia, DFJUG, Goiania, and The Developers Conference, Sao Paolo

    - by arungupta
    Java EE 6/7 and GlassFish are visiting multiple cities in Brazil: Jun 26 - Jul 2 FISL 12, Porto Alegre Jul 3 Sao Jose Do Rio Preto JUG Jul 4 - 5 DFJUG Taguatinga, Brasilia and other venues Jul 6 - 7 Goiania JUG and other venues Jul 8 - 9 The Developers Conference, Sao Paolo Even though my main focus will be Java EE 6/7 and GlassFish but feel free to ask any question. There are several speakers from Oracle at FISL so stop by at the booth and talk to us. @paulojeronimo, with the help of the local community, organized a 10k run on the morning of Jul 5th. So please feel free to run along, should be fun. @raphaeladrien mentioned about some nice parks near my hotel in Goiania so you'll find me running there as well. There will be interesting discussions around different Web frameworks in Goiania. And then there are always 4 things to not miss in Brazil - Churrascaria, Guarana, Coffee, Caipirinha. Where will I see you ?

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  • FISL 12, Sao Jose Do Rio Preto, Brasilia, DFJUG, Goiania, and The Developers Conference, Sao Paolo

    - by arungupta
    Java EE 6/7 and GlassFish are visiting multiple cities in Brazil: Jun 26 - Jul 2 FISL 12, Porto Alegre Jul 3 Sao Jose Do Rio Preto JUG Jul 4 - 5 DFJUG Taguatinga, Brasilia and other venues Jul 6 - 7 Goiania JUG and other venues Jul 8 - 9 The Developers Conference, Sao Paolo Even though my main focus will be Java EE 6/7 and GlassFish but feel free to ask any question. There are several speakers from Oracle at FISL so stop by at the booth and talk to us. @paulojeronimo, with the help of the local community, organized a 10k run on the morning of Jul 5th. So please feel free to run along, should be fun. @raphaeladrien mentioned about some nice parks near my hotel in Goiania so you'll find me running there as well. There will be interesting discussions around different Web frameworks in Goiania. And then there are always 4 things to not miss in Brazil - Churrascaria, Guarana, Coffee, Caipirinha. Where will I see you ?

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  • How do you visually represent programming skills?

    - by TomSchober
    I had a discussion with a recruiter recently that made me wish I could visually represent programming skills. In trying to explain how skills relate, what are the important properties of those skills? Would a tagging model work (i.e. "Design Pattern," "Programming Language," "IDE," or "VCS")? Are they really hierarchical? Clarification: The real problem I see is communicating the level of granularity among skill sets. For instance saying someone "knows Java" is a uselessly broad term in describing what someone can DO. However saying they know how to write web services with the Java Programming language is a bit better. To go even further, saying they know Spring as a tool under all that is probably specific enough. What should we call those levels of granularity? What are the relationships between the terms we use? i.e. Framework to Language, Tool to Language, Framework to Solution(like web services), etc.

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  • links for 2010-03-24

    - by Bob Rhubart
    @dhinchcliffe: When online communities go to work "As we see a growing set of examples of successful online communities in the enterprise space (both internally and externally), the broad outlines are emerging of what is turning into a vital new channel for innovation, business agility, customer relationships, and productive output for most organizations: Online communities as one of the most potent new ways to achieve business objectives, both in terms of cost and quality." -- Dion Hinchcliffe (tags: enterprisearchitecture entarch enterprise2.0 socialmedia) Steven Chan: WebCenter 11g (11.1.1.2) Certified with E-Business Suite Release 12 Steven Chan shares information on WebCenter 11g's (11.1.1.2) certification with Oracle E-Business Suite Release 12, along with a list of certified EBS 12 Platforms (tags: oracle otn enterprise2.0 webcenter ebs) @oraclenerd: 1Z0-052 - Exploring the Oracle Database Architecture Oracle ACE Chet "Oraclenerd" Justice shares a list of resources/documentation covering Oracle Database Architecture. (tags: oracle otn oracleace dba certification architecture) @oraclenerd: 1Z0-052 - Books "I don't believe I have ever purchased a book on or about Oracle. The documentation provided, especially for the database, is top notch. There is so much information available out there if you just know how to find it. Reading AskTom for years didn't hurt either." -- Chet "@oraclenerd" Justice. (tags: otn oracle oracleace certification dba) Lucas Jellema: Castle in the clouds – Building the Connexys SaaS application with Fusion Middleware Oracle ACE Director Lucas Jellema shares the slides from the presentation he and colleague Arne van der Ing submitted for OBUG 2010. (tags: otn oracle oracleace cloud saas obug fusionmiddleware connexys) John Burke: Why Your ERP System Isn't Ready for the Next Evolution of the Enterprise "[ERP] has to become a stealthy modern app to help you quickly adapt to business changes while managing vital information. And through modern middleware it will connect to everything. So yes ERP as we've know it is dead, but long live ERP as a connected application member of the modern enterprise." -- John Burke, Group VP, Applications Business Unit, Oracle (tags: oracle otn entarch erp) Darwin-IT: Postfix for handling mail in your integration solution "It took me some time to understand Postfix. I was quite overwhelmed by the options. And it took me some time to figure out how to configure it for this particular usecase...But as with most other things..it turns out to be simple." -- Martien van den Akker (tags: oracle linux soa postfix) TheServerSide.com: Cameron Purdy at TSSJS 2010: If Java beats C++, what's next? ''It turns out that Java performance is much better on modern architecture. That is because of multicore processors and in-lining.'' -- Cameron Purdy, as quoted in an article by Jack Vaughn (tags: oracle java otn c++)

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  • Design patterns and multiple programming languages

    - by Eduard Florinescu
    I am referring here to the design patterns found in the GOF book. First, how I see it, there are a few peculiarities to design pattern and knowing multiple languages, for example in Java you really need a singleton but in Python you can do without it you write a module, I saw somewhere a wiki trying to write all GOF patterns for JavaScript and all the entries were empty, I guess because it might be a daunting task to do that adaptation. If there is someone who is using design patterns and is programming multiple languages supporting the OOP paradigm and can give me a hint on how should I approach design patterns. An approach that might help me in all languages I use(Java, JavaScript, Python, Ruby): Can I write good application without knowing exactly the GOF design patterns or I might need just some of them which might be crucial and if yes which one, are there alternatives to GOF for specific languages, and should a programmer or a team make their own design patterns set?

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  • creating a simulation game, what type of knowledge is needed? [closed]

    - by Jordan
    I am a beginner in game development. As a part of learning and fun, want to create a game in java-script and html5. I am planning a game that we were used to play in childhood, that is "new business"- a monopoly game, in that we used to buy ,rent,sell places and bank we get some money to play and etc. are features. Its just simple ludo like game. So can anyone suggest me from where to start? what will be the designing? Is it possible to create it only in a html5 and java-script.

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  • Dawn of the Enterprise Social Developer

    - by Mike Stiles
    Social is not just for poking friends, posting videos of cats playing pianos, or even just for brand marketing anymore. It has become a key form of communication internally and externally across every area of the enterprise. As a Java developer, are you positioning yourself for the integration of social into enterprise business systems that’s on the near horizon? Because it’s the work you do and the applications you build that will influence what the social-enabled enterprise is going to look like and how it’s going to operate. But as a social developer, step one is wrapping your arms around all the things that are possible. Traditionally, the best exploration, brainstorming and innovation come from collaborating with other developers. That’s how the big questions can be hashed (or hacked) out. Is Java the best social development environment? If not, what is? What’s already being done in terms of application integration? The JavaOne Social Developer Program will offer up a series of talks and events on those very issues Tuesday, October 2 at the San Francisco Hilton. If you’re interested in embarking on this newest frontier of enterprise social development, you can connect with others who are thinking the same thing and get moving on your first project.Talks will include: Emergence Of The Social EnterpriseExtending Social into Enterprise Applications and Business ProcessesIntro to Open Graph and Facebook's APIs Building the Next Wave of Social Commerce Platforms Social Data and the Enterprise LinkedIn: A Professional Network Built with Java Technologies and Agile Practice Social Developer Hackathon In addition to these learning and discussion opportunities, you might consider joining the new Oracle Social Developer Community (OSDC), where the interaction and collaboration can continue indefinitely. It doesn’t take a lot of tea leaf reading to know that the cloud will house the enterprise technology of the future, and social (as well as the rich data it brings) is going to be a major part of that as social integrates across every business function as there’s proven value for consumer facing initiatives. The next phase of social development is going to involve combining enterprise data from multiple sources, new and existing, social and traditional, in order to tell compelling and usable stories. And social is coming to the enterprise quickly, meaning you as a development leader should seek to understand not just what's worked on the consumer side, but what aspects of those successes can be applied inside the organization. Get educated, get connected, and consider registering for this forward-looking event now to get started with enterprise social development.

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  • Oracle University Nouveaux cours (Week 42)

    - by rituchhibber
    Nouveaux cours Parmi les nouveautés d'Oracle Université de ce mois-ci, vous trouverez : Database Oracle Enterprise Manager Cloud Control 12c: Install & Upgrade (Training On Demand) MySQL Performance Tuning (Training On Demand) Fusion Middleware Oracle GoldenGate 11g Fundamentals for Oracle (4 days) Oracle WebCenter Content 11g: Site Studio Essentials (5 days) Oracle WebCenter Portal 11g: Build Portals with Spaces (3 days) Business Intelligence Oracle BI 11g R1: Create Analyses and Dashboards (4 days) SOA & BPM SOA Adoption and Architecture Fundamentals (3 Days) eBusiness Suite R12 Oracle Using and Maintaining Approvals Management - Self-Study Course R12 Oracle HRMS Advanced Benefits Fundamentals - Self-Study Course WebLogic Oracle WebLogic Server 11g: Monitor and Tune Performance (Training On Demand) Oracle WebLogic Server 11g: Administration Essentials Self-Study Course (in French) Financial Oracle Project Financial Planning 11.1.2: Create Projects ( 3 days) Tuxedo Oracle Tuxedo 12c: Application Administration (5 days) Java Java SE 7: The Platform Evolves - Self-Study Course Primevera Primavera Client/Server Partner Trainer Course - Self-Study Course Primavera Progress Reporter 8.2 - Self-Study Course Contacter l' équipe locale d' Oracle University pour toute information et dates de cours.

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  • How much is modern programming still tied to underyling digital logic?

    - by New Talk
    First of all: I've got no academic background. I'm working primarily with Java and Spring and I'm also fond of web programming and relational databases. I hope I'm using the right terms and I hope that this vague question makes some sense. Today the following question came to my mind: How much is modern programming still tied to the underlying digital logic? With modern programming I mean concepts like OOP, AOP, Java 7, AJAX, … I hope you get the idea. Do they no longer need the digital logic with which computers are working internally? Or is binary logic still ubiquitous when programming this way? If I'd change the inner workings of a computer overnight, would it matter, because my programming techniques are already that abstract? P. S.: With digital logic I mean the physical representation of everything "inside" the computer as zeroes and ones. Changed "binary" to "digital".

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  • How is time calculation performed by a computer?

    - by Jorge Mendoza
    I need to add a certain feature to a module in a given project regarding time calculation. For this specific case I'm using Java and reading through the documentation of the Date class I found out the time is calculated in milliseconds starting from January 1, 1970, 00:00:00 GMT. I think it's safe to assume there is a similar "starting date" in other languages so I guess the specific implementation in Java doesn't matter. How is the time calculation performed by the computer? How does it know exactly how many milliseconds have passed from that given "starting date and time" to the current date and time?

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  • junior / professional / senior categorization

    - by oozoo
    Hey guys, is it just me or is the categorization of developer levels highly subjective? I get the feeling that every company tries to hire experienced developers as juniors because they don't know $technology. For example my own career: I switched technologies a couple of times, while sticking to java as a programming language. For example I first worked for 3 years using JavaSE technologies, the next company I worked for hired me as junior because I didn't have JavaEE experience - while still selling me as professional level to customers (I work in consulting). The next company hired me again as junior because I didn't have SAP experience - they mostly work with SAP Java technologies which is definitely a niche. Still, they are selling all their technology consultants for exactly the same rate while paying them significantly different wages. Now when switching jobs again I feel like this whole thing is going to start all over again because I don't have Spring experience or Oracle knowledge. tl;dr = is my observation totally off base that companies are just using these categorizations as means to keep down wages?

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  • What source code organization approach helps improve modularity and API/Implementation separation?

    - by Berin Loritsch
    Few languages are as restrictive as Java with file naming standards and project structure. In that language, the file name must match the public class declared in the file, and the file must live in a directory structure matching the class package. I have mixed feelings about that approach. While I never have to guess where a file lives, there's still a lot of empty directories and artificial constraints. There's several languages that define everything about a class in one file, at least by convention. C#, Python (I think), Ruby, Erlang, etc. The commonality in most these languages is that they are object oriented, although that statement can probably be rebuffed (there is one non-OO language in the list already). Finally, there's quite a few languages mostly in the C family that have a separate header and implementation file. For C I think this makes sense, because it is one of the few ways to separate the API interface from implementations. With C it seems that feature is used to promote modularity. Yet, with C++ the way header and implementation files are split seems rather forced. You don't get the same clean API separation that you do with C, and you are forced to include some private details in the header you would rather keep only in the implementation. There's quite a few languages that have a concept that overlaps with interfaces like Java, C#, Go, etc. Some languages use what feels like a hack to provide the same concept like C# using pure virtual abstract classes. Still others don't really have an interface concept and rely on "duck" typing--for example Ruby. Ruby has modules, but those are more along the lines of mixing in behaviors to a class than they are for defining how to interact with a class. In OO terms, interfaces are a powerful way to provide separation between an API client and an API implementation. So to hurry up and ask the question, from a personal experience point of view: Does separation of header and implementation help you write more modular code, or does it get in the way? (it helps to specify the language you are referring to) Does the strict file name to class name scheme of Java help maintainability, or is it unnecessary structure for structure's sake? What would you propose to promote good API/Implementation separation and project maintenance, how would you prefer to do it?

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  • Where to find Information on Software/Technologies Supported by PSRM

    - by Paula Speranza-Hadley
    People often ask where they can find informatoin about software and technologies supported by PSRM and what versions are supported.  This information can be found in the following locations: For X Path - See Script Engine Version dropdown in script Display/maintenance portal  in PSRM for three different kinds of scripts we support. Reference Document: http://docs.oracle.com/cd/E50182_01/PDF/PSRM_Quick_Install_Guide_v2_4_0_0_0.pdf For HTML/Java script -  As supported by supported browsers mentioned in Installation Guides. For information related to supported platforms(OS, Browsers, App servers and Database Servers) -  See Certified and supported Platforms section. Reference Document: http://docs.oracle.com/cd/E50182_01/PDF/PSRM_Installation_Guide_v2_4_0_0_0.pdf For Information related to Oracle client, Java, Micro Focus, Web servers  -  See Installation Checklist section. For Third Party products, copy right and licensing notices (like Apache FWs/libraries) - See License and Copyright Notices section (Appendix B).

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  • Using JPA 2.0 with WebLogic Server 10.3.4 and Eclipse

    - by greg.stachnick
    Beginning in Oracle Enterprise Pack for Eclipse (OEPE) 11.1.1.6.1, we introduced a new feature for WebLogic Server configuration called Server Extensions. Similar in concept to project facets, Server Extensions allow us to install additional technologies, libraries, configurations, etc into an existing server runtime. WebLogic Server 10.3.4 introduces new support for Java Persistence 2.0, the new JEE 6 standard entity access. In order to start developing JPA 2.0 applications with WebLogic Server 10.3.4, a SmartUpdate patch must be applied to add and configure the EclipseLink libraries. More information on the manual EclipseLink installation and configuration can be found here. OEPE provides a Server Extension for JPA 2.0, making the addition and configuration of JPA 2.0 and EclipseLink much easier. When defining a new WebLogic Server 10.3.4 configuration, simply click the Install link for Java Persistence 2.0 and OEPE will take care of the WebLogic Server enablement for JPA 2.0.  

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  • Oracle University New Courses (Week 42)

    - by rituchhibber
      Oracle University released the following new (versions of) courses recently: Engineered Systems Exadata Database Machine Administration Workshop (Training On Demand) Development Tools Oracle Fusion Middleware 11g: Build Applications with ADF I (Training On Demand) Fusion Middleware Oracle AIA Foundation Pack 11g: Developing Applications (Training On Demand) Oracle Exalogic Elastic Cloud Administration (Training On Demand) Oracle GoldenGate 11g Fundamentals for Oracle (Training On Demand) Oracle Fusion Middleware 11g: Build Applications with ADF I (Training On Demand) Oracle WebCenter Portal 11g: Spaces Administration (3 days) Java Architect Enterprise Applications with Java EE (5 days) Hyperion Oracle Hyperion Planning 11.1.2: Create & Manage Applications (Training On Demand) Oracle Hyperion Financial Mgmt 11.1.2: Create & Manage Applications (Training On Demand) Get in contact with your local Oracle University team for more details and course dates.

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  • Carpool logical architecture

    - by enrmarc
    I'm designing a carpool system (drivers can publish their routes and passengers can subscribe to them) with WebServices(axis2) and Android clients (ksoap2). I have been having problems with the logical architecture of the system and I wondered if this architecture is fine. And another question: for that architecture (if it is ok), how would be the packages structure? I suppose something like that: (In android) package org.carpool.presentation *All the activities here (and maybe mvc pattern) (In the server) package org.carpool.services *Public interfaces (for example: register(User user), publishRoute(Route route) ) package org.carpool.domain *Pojos (for example: User.java, Route.java, etc) package org.carpool.persistence *Dao Interface and implementation (jdbc or hibernate)

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  • Is this how dynamic language copes with dynamic requirement?

    - by Amumu
    The question is in the title. I want to have my thinking verified by experienced people. You can add more or disregard my opinion, but give me a reason. Here is an example requirement: Suppose you are required to implement a fighting game. Initially, the game only includes fighters, who can attack each other. Each fighter can punch, kick or block incoming attacks. Fighters can have various fighting styles: Karate, Judo, Kung Fu... That's it for the simple universe of the game. In an OO like Java, it can be implemented similar to this way: abstract class Fighter { int hp, attack; void punch(Fighter otherFighter); void kick(Fighter otherFighter); void block(Figther otherFighter); }; class KarateFighter extends Fighter { //...implementation...}; class JudoFighter extends Fighter { //...implementation... }; class KungFuFighter extends Fighter { //...implementation ... }; This is fine if the game stays like this forever. But, somehow the game designers decide to change the theme of the game: instead of a simple fighting game, the game evolves to become a RPG, in which characters can not only fight but perform other activities, i.e. the character can be a priest, an accountant, a scientist etc... At this point, to make it more generic, we have to change the structure of our original design: Fighter is not used to refer to a person anymore; it refers to a profession. The specialized classes of Fighter (KaraterFighter, JudoFighter, KungFuFighter) . Now we have to create a generic class named Person. However, to adapt this change, I have to change the method signatures of the original operations: class Person { int hp, attack; List<Profession> skillSet; }; abstract class Profession {}; class Fighter extends Profession { void punch(Person otherFighter); void kick(Person otherFighter); void block(Person otherFighter); }; class KarateFighter extends Fighter { //...implementation...}; class JudoFighter extends Fighter { //...implementation... }; class KungFuFighter extends Fighter { //...implementation ... }; class Accountant extends Profession { void calculateTax(Person p) { //...implementation...}; void calculateTax(Company c) { //...implementation...}; }; //... more professions... Here are the problems: To adapt to the method changes, I have to fix the places where the changed methods are called (refactoring). Every time a new requirement is introduced, the current structural design has to be broken to adapt the changes. This leads to the first problem. Rigid structure makes it hard for code reuse. A function can only accept the predefined types, but it cannot accept future unknown types. A written function is bound to its current universe and has no way to accommodate to the new types, without modifications or rewrite from scratch. I see Java has a lot of deprecated methods. OO is an extreme case because it has inheritance to add up the complexity, but in general for statically typed language, types are very strict. In contrast, a dynamic language can handle the above case as follow: ;;fighter1 punch fighter2 (defun perform-punch (fighter1 fighter2) ...implementation... ) ;;fighter1 kick fighter2 (defun perform-kick (fighter1 fighter2) ...implementation... ) ;;fighter1 blocks attacks from fighter2 (defun perform-block (fighter1 fighter2) ...implementation... ) fighter1 and fighter2 can be anything as long as it has the required data for calculation; or methods (duck typing). You don't have to change from the type Fighter to Person. In the case of Lisp, because Lisp only has a single data structure: list, it's even easier to adapt to changes. However, other dynamic languages can have similar behaviors as well. I work primarily with static languages (mainly C and Java, but working with Java was a long time ago). I started learning Lisp and some other dynamic languages this year. I can see how it helps improving my productivity.

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  • ArchBeat Link-o-Rama for 2012-09-19

    - by Bob Rhubart
    BPM Process Accelerator Packs – Update | Pat Shepherd Architect Pat Shepherd shares several resources relevant to the new Oracle Process Accelerators for Oracle Business Process Management. Oracle BI EE Management Pack Now Available for Oracle Enterprise Manager 12cR2 | Mark Rittman A handy and informative overview from Oracle ACE Director Mark Rittman. WebSockets on WebLogic Server | Steve Button "As there's no standard WebSocket Java API at this point, we've chosen to model the API on the Grizzly WebSocket API with some minor changes where necessary," says James "Buttso" Buttons. "Once the results of JSR-356 (Java API for WebSocket) becomes public, we'll look to implement and support that." Oracle Reference Architecture: Software Engineering This document from the IT Strategies from Oracle library focuses on integrated asset management and the need for efffective asset metadata management to insure that assets are properly tracked and reused in a manner that provides a holistic functional view of the enterprise. The tipping point for cloud management is nigh | Cloud Computing - InfoWorld "Businesses typically don't think too much about managing IT resources until they become too numerous and cumbersome to deal with on an ad hoc basis—a point many companies will soon hit in their adoption of cloud computing." — David Linthicum DevOps Basics: Track Down High CPU Thread with ps, top and the new JDK7 jcmd Tool | Frank Munz "The approach is very generic and works for WebLogic, Glassfish or any other Java application," say Frank Munz. "UNIX commands in the example are run on CentOS, so they will work without changes for Oracle Enterprise Linux or RedHat. Creating the thread dump at the end of the video is done with the jcmd tool from JDK7." Frank has captured the process in the posted video. OIM 11g R2 UI customization | Daniel Gralewski "OIM user interface customizations are easier now, and they survive patch applications--there is no need to reapply them after patching," says Fusion Middleware A-Team member Daniel Gralewski. "Adding new artifacts, new skins, and plugging code directly into the user interface components became an easier task." Daniel shows just how easy in this post. Thought for the Day "I have yet to see any problem, however complicated, which, when looked at in the right way, did not become still more complicated." — Poul Anderson (November 25, 1926 – July 31, 2001) Source: SoftwareQuotes.com

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  • Forms&Reports upgrade characterset issues

    - by Lukasz Romaszewski
    Hello,This quick post is based on my findings during recent IMC workshops, especially those related to upgrading the Forms 6i/9i/10g applications to Forms 11g platform. The upgrade process itself is pretty straightforward and it basically requires recompiling your Forms application with a latest version of frmcmp tool. For some cases though, especially when you migrate from Forms 6i which is a client-server architecture to a 3-tier web solution (Forms 11g), you need to rewrite some parts of your code to make it run on new platform. The things you need to change range from reimplementing (using webutil library) typical client-site functionality like local IO operation, access to WinAPI, invoking DLLs etc. to changing deprecated or obsolete APIs like RUN_PRODUCT to RUN_REPORT_OBJECT. To automate those changes Oracle provides complete Java API  which allows you to manipulate the code and structure of you modules (JDAPI). To make it even easier we can use Forms Migration Assistant tool (written in Java using JDAPI) which is able to replace all occurrences of old API entries with their 11g equivalents or warn you when the replacement is not possible. You can also add your own replacement definitions in the search_replace.properties file. But you need to be aware of some issues that can be encountered using this tool. First of all if you are using some hard-coded text inside your triggers you may notice that after processing them by the Migration Assistant tool the national characters may be lost. This is due to the fact that you need to explicitly tell Java application (which MA really is) what kind of characterset it should use to read those text properly. In order to do that just add to a script calling MA the following line:  export JAVA_TOOL_OPTIONS=-Dfile.encoding=<JAVA_ISO_ENCODING>  when the particular encoding must match the NLS_LANG in your Forms Builder environment (for example for Polish characterset you need to use ISO-8859-2).Second issue you can encounter related to national charactersets is lack of national symbols in you reports after migration. This can be solved by adding appropriate NLS_LANG entry in your reports environment. Sometimes instead of particular characterset you see "Greek characters" in your reports. This is just default font used by reports engine instead of the one defined in your report. To solve it you must copy fonts definitions from your old environment (e.g. Forms 10g installation) to appropriate directory in new installation (usually AFM folder). For more information about this and other issues please refer to https://support.oracle.com/CSP/main/article?cmd=show&type=NOT&doctype=BULLETIN&id=1297012.1at My Oracle Support site. That's all for today, stay tuned for more posts on this topic! Lukasz

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