On 14 August 2010 19:04, Marcos Douglas wrote: > 1- What the connector you use to Postgre and SQLServer, Zeoslib?
For PostgreSQL you can use Zeoslib or SqlDB (included in FCL and part of FPC). For MS SQLServer there is not direct database component, but you should be able to use ODBC (I have done this to talk to MS Access from Linux). > 2- What the Report designer is more like with ReportBuilder? There are a few. I use a custom written one that uses RTF files as report templates. I can use any editor that edits RTF files as my report designer and previewer. In our case we like to use OpenOffice because we can distribute it to all our clients for free, and it's read-only mode makes for a great "report preview" system (OOo hides all toolbars and edit options in read-only mode). We even use OpenOffice to generate PDF's via the non-GUI API. > 3- Do exists something I can do with Delphi but not do with FPC? Probably yes. But this is true from both FPC and Delphi. Each can do something that the others can't - or maybe just with a bit more effort. Have you got a specific feature in mind? > 4- The Lazarus IDE is the most used, but MSEide is relevant too? Why? It's quicker and easier to build, feels faster than Lazarus and seems more stable. Note: I'm talking about the IDE itself, not the GUI toolkits each of them uses. I don't use LCL or MSEgui, but rather fpGUI Toolkit. If you want to move your GUI forms etc from VCL, then probably LCL will be the quickest to do because Lazarus IDE comes with a Delphi-to-Lazarus conversion tool. If your move is because you want to develop your application for multiple platforms, then you must take other things in consideration too. LCL is maybe not the best choice then either - depending on your needs. fpGUI and MSEgui are custom drawn GUI toolkits, so look and behaviour is identical on all platfroms - theming can be applied to "look more native". This also has the benefit that all features of the GUI toolkit can be used safely in a cross-platform way. With LCL (which wrapper other GUI toolkits), only the most common features of each platform toolkit can be used in a cross-platform way. As soon as you use features that are specific to a platform, your code starts getting riddled with IFDEF statements - not good, and a nightmare to maintain. This is why our company invested the time to develop fpGUI. We have NO IFDEF's in our code and all components work and behave identical on all platforms - much easier to work with and maintain. > 5- Do you use Object Persistence Framework (OPF)? If yes, which is? > 5.1- What is the best OPF most used? Would be tiOPF? Yes, we use tiOPF. I'm a core developer of tiOPF. We use Model-GUI-Mediator (MGM implementation included in tiOPF repository) to make all standard UI components "object aware". No need for DB-aware or custom descendant components to let your Business Objects interact with the UI. MGM supports fpGUI, LCL and VCL. > 6- What FPC/Lazarus provides to DataSets in memory like TClientDataSet > in Delphi? > 6.1- And about multi-tier applications, what they provides? Due to use using tiOPF, we don't need TClientDataset. I believe FPC is near having a TClientDataset (some minor parts are missing). With tiOPF you can still have multi-tier applications though. tiOPF includes a "remote persistence layer" which uses HTTP as the communication protocol and uses XML to transfer data between tiers. The "app server" runs an embedded HTTP server and many components can be used for this: eg Indy. > 7- Is there any other factors we should consider before making this > migration, which was not written above? * Are you planning to target multiple systems, or still just Windows. * Is your apps GUI or non-GUI. If GUI, then you need to decide what GUI toolkit to use and what features are important to you. Code maintainability etc. Our company moved over to FPC (from Delphi 7). First to Kylix 3, then to FPC. Since we started using FPC, we never looked back. It was a good move! -- Regards, - Graeme - _______________________________________________ fpGUI - a cross-platform Free Pascal GUI toolkit http://opensoft.homeip.net/fpgui/ _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
