Other B4J v10.7 BETA with optional parameters, jServer 5 and more

[Erel]

I'm happy to release a new BETA version of B4J.
The parser has undergone a major refactoring, resulting in performance improvements and providing the potential for new language features. The first one is optional parameters.

Improvements:

• Optional parameters: https://www.b4x.com/android/forum/threads/171906/#content
• jServer 5 based on Jetty 12.1: https://www.b4x.com/android/forum/threads/171536/#content
• OkHttp / OkHttpUtils2 updated to Okhttp 5.4.
• Exception.StackTrace and ThrowException keyword.
• Various libraries updated with default parameters.
• sqlite-jdbc.jar included in the internal libraries. The old sqlite-jdbc-3.7.2.jar is also kept for backward compatibility. It is recommended to reference sqlite-jdbc.jar. This jar will be updated from time to time as sqlite evolves. Current version is 3.53.2.
• Inno Setup template updated with x64compatible setting to support ARM windows. Note that B4X installer was updated as well.
• Errors in referenced b4xlibs are marked with their library and module.
• Doclet tool updated to support default values: https://www.b4x.com/android/forum/t...mpiler-build-libraries-without-eclipse.29918/
• Bug fixes and other minor improvements.

Download link: https://www.b4x.com/b4j/files/beta.exe

 

[aeric]

sqlite-jdbc.jar included in the internal libraries. The old sqlite-jdbc-3.7.2.jar is also kept for backward compatibility. It is recommended to reference sqlite-jdbc.jar. This jar will be updated from time to time as sqlite evolves. Current version is 3.53.2.

B4XTable will use the newer version?

 

[Erel]

Checking to make sure. And:

Version=1.25
B4J.DependsOn=B4XFormatter.b4xlib, jSQL, sqlite-jdbc, XUI Views

Yes.

 

[Erel]

Examples for optional parameters:

'From:
Dim b() As Byte = "aaaa".GetBytes("UTF-8")
'''
Dim s As String = BytesToString(b, 0, b.Length, "UTF-8")

'To:
Dim b() As Byte = "aaaa".GetBytes
'''
Dim s As String = BytesToString(b)

'From:
Dim j As HttpJob
j.Initialize("", Me) 'unused JobName and always "Me"
j.Download(url)

'To:
Dim j As HttpJob
j.Initialize
j.Download(url)

 

[MichalK73]

I still see jServer in the old version, no version 5. Clean install.

 

[Erel]

The online version still shows 4.1. Select the library and it should show 5.02.

 

[Peter Simpson]

Hello Erel
I've not tried it, but does the DefaultValue work something like these, or am I way out like I presume that I am???

public void ConnectWithOptions(String ssid, @DefaultValue("30000") int timeoutMs, @DefaultValue("false") boolean autoReconnect) {
    // Blah blah blah
}

public void setMode(@DefaultValue("AUTO") String mode) {
    // Blah blah blah
}

Hmm...

 

[Toley]

Hello Erel
I've not tried it, but does the DefaultValue work something like these, or am I way out like I presume that I am???

public void ConnectWithOptions(String ssid, @DefaultValue("30000") int timeoutMs, @DefaultValue("false") boolean autoReconnect) {
    // Blah blah blah
}

public void setMode(@DefaultValue("AUTO") String mode) {
    // Blah blah blah
}

Hmm...

[B4X] Optional sub parameters

This is a new feature that will be added to the B4X tools. Optional sub parameters are parameters that are declared with a default value. If an optional parameter is omitted when the sub is called, the compiler inserts the default value. This provides an opportunity to set reasonable defaults...

www.b4x.com

 

[Peter Simpson]

[B4X] Optional sub parameters

This is a new feature that will be added to the B4X tools. Optional sub parameters are parameters that are declared with a default value. If an optional parameter is omitted when the sub is called, the compiler inserts the default value. This provides an opportunity to set reasonable defaults...

www.b4x.com

I missed that post, thank you

 

[b4x-de]

I'm very happy about improvements in exception handling. Would you please provide an example for and more insight into the new ThrowException keyword. Thank you very much!

 

[Erel]

Note that these two features are currently available in B4A and B4J, and will soon be added to B4i.
ThrowException:

Public Sub SumPositiveNumbers(x As Int, y As Int) As Int
    If x <= 0 Or y <= 0 Then
        ThrowException("Parameters must be positive.")
    End If
    Return x + y
End Sub

StackTrace:

Try
    Dim z As Int = SumPositiveNumbers(1, -2)   
    '...
Catch
    Log(LastException)
    Log(LastException.StackTrace)
End Try

(RuntimeException) java.lang.RuntimeException: Parameters must be positive.
java.lang.RuntimeException: Parameters must be positive.
at anywheresoftware.b4a.keywords.Common.ThrowException(Common.java:682)
at b4j.example.main._sumpositivenumbers(main.java:101) <---------------- useful information here
at b4j.example.main._appstart(main.java:59)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:117)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:104)
at b4j.example.main.start(main.java:37)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:847)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:484)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:457)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:456)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:1589)

Stack traces are more meaningful in release mode.