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Application Factory
Saturday, May 14, 2011PrintSubscribe
Extended BLOB Processing

This update of Code On Time web application generator introduces a major enhancement of file upload/download feature and several bug fixes.

Make sure to refresh the browser cache after re-generating your application.

Bug Fixes / Enhancements

  • Data Sheet view rendering has been improved. Users will notice that sometimes column header of a selected cell is not rendered in “bold” font. This is happening only if assigning a “bold” font will cause the column to become wider. This cosmetic change makes it easier to work with the data sheet.
  • Tab and Shit+Tab keys will always skip read-only fields in the data sheet view. You can still select a read-only cell with a mouse click or with arrow keys.
  • Dates are now displayed exactly as stored in the database regardless of the time zone of the client browser. ASP.NET Ajax client library automatically adjusts dates to the browser’s time zone, which creates logical problems with date and time processing. Data serialization enhancement ensures that difference between the time zone of the web server and the time zone of the browser is ignored.
  • ASP.NET SQL Server Session State is now fully supported. This important feature allows running generated applications on web farms. Read about configuring SQL Server Session State at http://support.microsoft.com/kb/317604. You need to create Web.Config modification instructions for your application to enable the session state as described at /blog/2010/03/customizing-webconfig.html.
  • Form views no longer hide the top row of buttons regardless of the number of fields in a data view.
  • Business rules processor will only try to convert values if ICovertible interface is supported.
  • Microsoft SQL Server membership registration has been changed to remove LocalSqlServer connection string prior to the new registration of a connection string with the same name. This allows generating applications for SQL Server when the latest Oracle / NET library is installed on the same computer.
  • Import processor now implements BeforeProcess and AfterProcess. The class has been refactored in a partial ImportProcessor based on class ImportProcessorBase. This allows creating a new code file in your project with implementation of new virtual methods if you need to execute custom business logic before of after the import process.
  • The bug with field map processing when Import command is selected in IE 9 and Chrome has been corrected.
  • WebKit (Chrome and Safari) browsers will no longer display a modal popup information box stating that the “GetPage method has failed..”. This was happening when user were selecting a menu option while the page was waiting for a response from the server.
  • Read-Only fields are now always correctly passed to business rules. FieldValue class now  returns NewValue if a field is read-only or modified, which makes it possible to “see” the read-only value in a business rule method. Client library has been changed to enable value conversion on the client. Read-only values of non-string type are passed as their native representation to the server instead of being passed as strings.

File Upload/Download

The application framework of generated web applications allows enhanced processing of BLOB (Binary Large Object) fields. The framework will capture Content Type, Length, and File Name automatically if utility fields matching the BLOB field name are present.

This can be done by simply implementing additional fields in your database. For example, if you modify the Norwind.dbo.Categories table as shown below, refresh the metadata of your project and re-generate the project then the utility fields PictureFileName, PictureContentType, and PictureLength will automatically capture the corresponding properties of an uploaded file.

CREATE TABLE [dbo].[Categories](
    [CategoryID] [int] IDENTITY(1,1) NOT NULL,
    [CategoryName] [nvarchar](15) NOT NULL,
    [Description] [ntext] NULL,
    [Picture] [image] NULL,
    [PictureLength] [int] NULL,
    [PictureFileName] [nvarchar](50) NULL,
    [PictureContentType] [nvarchar](80) NULL,
 CONSTRAINT [PK_Categories] PRIMARY KEY CLUSTERED 
(
    [CategoryID] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

GO

If you upload a file of non-image format (PDF, Word Document, etc.) and try downloading the file then the application will return the correct content type and file name to the browser.

Important: Make sure to allocate enough length for <BLOB_FIELD_NAME>ContentType field to ensure that Microsoft Office documents will have their content type captured correctly. The content types of the latest Microsoft Office documents are extremely long.

If is also possible to process files through business rules. The tutorial will be available shortly.

Coming Soon

We have finally completed the necessary templates to roll out Azure Factory project. Premium and Unlimited edition users will be able to begin generating Azure Factory applications  starting with the next update.

Owners of Unlimited edition will be able to create enterprise-class applications with EASE (Enterprise Application Services Engine). The engine will include two major components – Dynamic Access Control List and Status Transitions.

We will be releasing a new project DotNetNuke Factory that will allow incorporating Code On Time applications in DotNetNuke web sites shortly thereafter.

Tuesday, May 3, 2011PrintSubscribe
SQL Anywhere Web Applications in Minutes

Code On Time announces support for SQL Anywhere 12.  Generate powerful user-friendly line-of-business web applications straight from SQL Anywhere 12 databases with Microsoft Office look and feel. The following instructions are written with an assumption that you have installed SQL Anywhere software on your computer.

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INSTALLATION

Download the code generator at http://codeontime.com/download.aspx. The installation program will also install Microsoft.NET 4.0, IIS Express 7.5, and Microsoft Report Viewer 2010. These components are available at no cost and fully supported by Microsoft.

The code generator will use IIS Express to run generated web applications on your computer. It can be installed alongside the production version of IIS available in several versions of Microsoft Windows.

The report viewer component will render will render dynamically created reports in PDF, Word, Excel, and TIFF formats.

Follow installation instructions and click on Code OnTime Generator shortcut created on the desktop after installation.

GENERATING AN APPLICATION

Start new Web Site Factory project and enter SQL Anywhere Demo as the project name.

Click Next until your reach Data Connection page in the project wizard.

Select SQL Anywhere option in data provider and enter the following connection string.

userid=dba;password=sql;

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Enable dynamic and static reporting in your project.

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Click next and you will see Authentication and Membership page of the project wizard.

Follow instructions at /blog/2011/05/sql-anywhere-membership-configuration.html to configure ASP.NET Membership in your database.

Select the check box titled “Enable support for ASP.NET Membership with membership bar user manager”.

Select the check box “Membership will use a standalone database that already exist”. Select SQL Anywhere option in Provider Name.

Enter the same connection string

userid=dba;password=sql;

You can also point the connection string to another SQL Anywhere database to store ASP.NET membership data that can be shared between multiple projects. Make sure that configuration of the database has been performed prior to generating the application.

Click Next several times until your see a list of data controllers created from your database.

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Now you are ready to generate an application and see it in action.

Click next and wait for the application to be displayed in your web browser. If the browser page comes out blank then simply give it a few moments and hit Refresh button. This may happen if your computer is busy and IIS Express is still getting ready to start the generated web application.

You should see the screen similar to the one in the picture.

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USING GENERATED WEB APPLICATION

Make sure to keep the code generator running. Code On Time will automatically shut down the started IIS Express instances if you close the web application generator window.

Sign-in using one of the user accounts automatically created by application.  We suggest that you sign in as admin / admin123% . This user account is authorized to see the membership manager.

Click around and play with the generated pages.

Here is the screenshot of the Customers page if you select a customer record. Master record is shown in edit mode with the detail records tabbed at the bottom. Several other standard page layout are available. You can use the project Designer to create custom layouts. Click on the link to see an example of a custom Order Form.

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Note that detail records can be edited in modal forms if you are using a commercial edition of the web application generator.

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Here is the screen shot of the Products page display in Data Sheet view that allows spreadsheet-style editing of data. Data Sheet view does not require any external components and is available in Premium and Unlimited editions of Code On Time.

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Select Report | Adobe PDF option from the action bar of any grid or data sheet view and take a look at PDF printout of your data with custom filters displayed in the report header.

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Select Actions | View RSS Feed and subscribe to the feed to be notified by your RSS feed reader when new movies with the filtering criteria become available. How needs email anymore?

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Try some cool data analysis features that allow extending your application and data to the end-user desktops enabling safe and efficient data delivery to business users.

Select Actions | Export to Spreadsheet to export data for analysis.

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A prompt will show up to warn you that some data is being downloaded. Internet Explorer 9 and other major browser display a prompt at the bottom of the screen.

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Press Open button to open the file. This will start Microsoft Excel. You will see a warning about potential security concern.

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We are downloading data from our own application – there is no risk involved. Press Enable button to continue.

The data will be downloaded into a new Worksheet. You may be asked to identify yourself. Enter admin/admin123% or any other valid user account registered in the application membership database.

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Select Insert on the ribbon and click PivotTable button.

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Confirm the creation of a data range.

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Now you are good to go. Here is the pivot view of the sales order items that shows distribution of product sales by employees. With a few clicks add a Pivot Chart for added impact.

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Within minutes business users can make sense of their data and have amazing dashboards built in the tool they know best –Microsoft Excel.

The data feed embedded into the spreadsheet is live. Users can save the spreadsheet on the hard drive.

To refresh the data users can open the spreadsheet and select Refresh button on the Data tab of the ribbon.

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Users will be prompted to re-enter the user name and password. The user’s identity will be verified against the database and the data feed will be refreshed.

Conclusion

Within minutes you can turn your SQL Anywhere 12 database into interactive treasure trove of data that can be placed on Internet or Intranet server.

Other available database connectivity options are MySQL, Microsoft SQL Server, and Oracle.

Review code customization techniques at http://codeontime.com/tutorials.aspx to learn how to use application designer to enhance the application and how to write custom business rules if the standard features of the generated application need to be enhanced.

Wednesday, April 27, 2011PrintSubscribe
Data Sheet Enhancements

The following enhancements and bug fixes were introduced in the latest update.

Miscellaneous Improvements

  • Search bar is correctly displayed if activated on start in browsers other than IE.
  • Firefox bug preventing creation of lookup items in-place has been fixed.
  • Core CSS enhancements to improve support for IE 9 and enhance quality of the data sheet rendering
  • Several new resource constants in Web.DataViewResources.js to support new functionality in the data sheet view.

Data Sheet

Summary of data sheet enhancements.

  • Menu “Actions” in the action bar will feature “Show in Data Sheet” or “Show in Standard View” option if your application has been produced by Premium or Unlimited edition. These new options are executing actions with Data Sheet and Grid command names, which causes switching between data sheet and standard grid view.   
     
    See the Data Sheet view in action at http://codeontime.com/demo.aspx.
     
    image
    image
     
  • Data Sheet view now display an arrow pointer in the gap column to indicate the row that is currently selected in the view. The focused cell may be positioned in any row. The selected row is designated by the arrow. Any linked child data views are filtered to match the primary key of the selected row.
     
    image
     
  • Several bugs related to keyboard handling were fixed. Pressing Enter key while working in the child data sheet with the master form would have caused erratic selection of buttons in the master form.
  • User can start creating a new row in the data sheet by pressing Insert key or navigating past the last row in the data sheet view.
  • User can end editing an existing or entering a new row by pressing Tab or Enter key while in the last column of the row. Tab key will cause automatic creation of a new row if the current row has been persisted successfully. Enter key will leave the selection focus on the last focused column.
  • Empty data sheet view offers a link to enable instant creation of new rows. Users can click on a link to start creating a new row.
     
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    image
  • User can press Ctrl+Delete keys to delete the row with the current focus in the data sheet.
  • User can press Ctrl+Space to select a a row if multiple-row selection is enabled in the data sheet.
  • Pressing Tab or Shift+Tab key in edit mode will skip the read-only cells.

Next Update

The upcoming update will introduce the long awaited enhanced file upload/download processing to allow capturing file name, size, and content type. 

Continue to Data Sheet View