Documentation

Trace:

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
Next revision Both sides next revision
jvx:reference [2020/06/10 13:09]
cduncan [The application]
jvx:reference [2020/06/10 13:18]
cduncan [DataType]
Line 574: Line 574:
 Because the launcher has previously started the technology and created the factory, we can now use UI components, which means we are already independent of the underlying technology. So, the ''​%%IApplication%%''​ implementation can already be used with different technologies and is completely independent. Because the launcher has previously started the technology and created the factory, we can now use UI components, which means we are already independent of the underlying technology. So, the ''​%%IApplication%%''​ implementation can already be used with different technologies and is completely independent.
  
-===== Notes on the launcher ​=====+===== Notes on the Launcher ​=====
  
-As you might have noticed, in our example the launcher is a (window) frame, that makes sense for nearly every desktop GUI toolkit as they all depend upon a window as main method to display their applications. But the launcher could also be simplerfor example just a call to start the GUI thread. Or it could be something completely differentfor example an incoming HTTP request.+As you might have noticed, in our example the launcher is a (window) frame. That makes sense for nearly every desktop GUI toolkit as they all depend upon a window as main method to display their applications. But the launcher could also be simplerfor examplejust a call to start the GUI thread. Or it could be something completely differentfor examplean incoming HTTP request.
  
-Also don’t forget that the launcher is providing additional functionality to the application,​ like saving file handles, reading and writing the configuration and similar platform and toolkit dependent operations, see the [[https://​sourceforge.net/​p/​jvx/​code/​HEAD/​tree/​trunk/​java/​swing/​src/​com/​sibvisions/​rad/​ui/​swing/​impl/​SwingApplication.java|launcher for Swing for further details]].+Alsodon’t forget that the launcher is providing additional functionality to the application,​ like saving file handles, reading and writing the configurationand similar platform and toolkit-dependent operations. See the [[https://​sourceforge.net/​p/​jvx/​code/​HEAD/​tree/​trunk/​java/​swing/​src/​com/​sibvisions/​rad/​ui/​swing/​impl/​SwingApplication.java|launcher for Swing for further details]].
  
 ===== Conclusion ===== ===== Conclusion =====
Line 590: Line 590:
 ===== What is it? ===== ===== What is it? =====
  
-DataBooks are an active model, which allow you to directly query and manipulate the data. Contrary to many other systems [[https://​sourceforge.net/​projects/​jvx/​|JVx]] does not map the data into objects, but instead ​allows you to directly access it in a table like fashionexposing columns, rows and values.+DataBooks are an active model, which allow you to directly query and manipulate the data. Contrary to many other systems[[https://​sourceforge.net/​projects/​jvx/​|JVx]] does not map the data into objects, but allows you to directly access it in a table-like fashion exposing columns, rowsand values.
  
-One could say that it is like a three dimensional arraywith these dimensions:+One could say that it is like a three dimensional array with these dimensions:
  
   * DataPages   * DataPages
Line 598: Line 598:
   * Columns/​Values   * Columns/​Values
  
-With DataPages containing DataRows, which itself ​contain the values and everything ​is referencing the RowDefinition,​ which outlines how a row looks like.+with DataPages containing DataRows, which in turn contain the values and everything referencing the RowDefinition,​ which further ​outlines how a row looks like.
  
 {{:​jvx:​reference:​databook.png?​nolink|DataBook Architecture,​ the DataBook contains DataPages, which contain DataRows.}} {{:​jvx:​reference:​databook.png?​nolink|DataBook Architecture,​ the DataBook contains DataPages, which contain DataRows.}}
Line 616: Line 616:
 dataBook.setRowDefinition(rowDefinition);​ dataBook.setRowDefinition(rowDefinition);​
 </​code>​ </​code>​
-==== ColumnDefinition ​====+==== Column Definition ​====
  
-The ColumnDefinition ​defines and provides all necessary information about the column, like its DataType, its size and if it is nullable or not. You can think of it as one column in a table.+The column definition ​defines and provides all necessary information about the column, like its  ​datatype, its sizeand whether ​it is nullable or not. You can think of it as one column in a table.
  
 <code java> <code java>
Line 624: Line 624:
 columnDefinition.setNullable(false);​ columnDefinition.setNullable(false);​
 </​code>​ </​code>​
-==== MetaData ​====+==== Metadata ​====
  
-Most of the ColumnDefinition ​is additional information about the column, like if it is nullable, the label of the column, default values, allowed values and similar information.+Most of the column definition ​is additional information about the column, like if it is nullable, the label of the column, default values, allowed valuesand similar information.
  
-==== DataType ​====+==== Datatype ​====
  
-Of course we must define what type the value in the column has, this is done by setting a DataType ​on the ColumnDefinition. The DataType ​defines what kind of values the column holds, like if it is a String, ​or a Number or something else. We do provide the most often used DataTypes ​out of the box:+Of coursewe must define what type the value in the column has. This is done by setting a datatype ​on the column definition. The datatype ​defines what kind of values the column holds, like if it is a String, a Numberor something else. We provide the most often used datatypes ​out of the box:
  
   * BigDecimal   * BigDecimal
Line 640: Line 640:
   * Timestamp   * Timestamp
  
-It is possible to add new DataTypes ​by simply implementing ''​%%IDataType%%''​.+It is possible to add new datatypes ​by simply implementing ''​%%IDataType%%''​.
  
 ===== DataRow ===== ===== DataRow =====
This website uses cookies for visitor traffic analysis. By using the website, you agree with storing the cookies on your computer.More information