I use JavaDB (Derby) as an embedded database in my Java Swing application. I would like to detect and print the version of JavaDB I'm using. I have included derby.jar in my .jar-file for the application.
How can I detect and print the version of my embedded JavaDB?
http://download.oracle.com/javadb/10.6.1.0/javadoc/jdbc3/org/apache/derby/tools/sysinfo.html
String version = sysinfo.getVersionString();
Can also be run from the command line:
java -jar yourjarfile.jar org.apache.derby.tools.sysinfo
If you do not want the compile-time dependency, you can also get the version info from the JDBC DatabaseMetaData:
conn.getMetaData().getDatabaseMajorVersion(); // and friends
You can also detect the product version directly using SQL:
select getdatabaseproductversion() from (values (1)) t (a);
Related
I'm trying to get familiar with the robotframework using autoitlibrary to test Windows applications. I found some examples which use the Send command to type text into a notpad window.
That's what I've done so far:
*** Settings ***
Library AutoItLibrary
*** Variables ***
${app} C:/Program Files/Notepad++/notepad++.exe
*** Test Cases ***
Enter text
Run ${app}
Win Wait Active new 1 - Notepad++
Send This is just a test.
So, the Notepad++ window is opened, but then it failed with the No keyword with name 'Send' found. message. I suppose there is no Send command in the AutoItLibrary, but I also cannot find any other command which may do this job.
AutoIt is installed, and so is the wrapper by pip install robotframework-autoitlibrary.
There really exists a Send keyword in AutoIt, but supposedly not in the wrapper for robotframework.
And ideas to fix this?
UPDATE: Windows 10 (64bit in a VirtualBox), Python v3.7.6 (32bit), RF v3.1.2, RF-AutoItLibrary v1.2.4, AutoIt v3.3.14.5
The "Search Keywords" dialog in RIDE provides AutoItLibrary as a Source, but then list only a few commands. So I suppose the library is accessible, but incomplete.
import os, re, subprocess, sys
# Set path to Python directories.
programfiles = os.environ['programfiles']
if not programfiles:
exit('Failed to get programfiles')
python_dirs = [os.path.join(programfiles, 'Python35'),
os.path.join(programfiles, 'Python36'),
os.path.join(programfiles, 'Python37'),
os.path.join(programfiles, 'Python38')]
# Process each python directory.
for python_dir in python_dirs:
print('---')
# Set path to AutoItX3.dll.
autoitx_dll = os.path.join(python_dir, r'Lib\site-packages\AutoItLibrary\lib\AutoItX3.dll')
if not os.path.isfile(autoitx_dll):
print('File not found: "' + autoitx_dll + '"')
continue
# Set path to the makepy module.
makepy = os.path.join(python_dir, r'Lib\site-packages\win32com\client\makepy.py')
if not os.path.isfile(makepy):
print('File not found: "' + makepy + '"')
continue
# Generate cache using make.py.
command = [os.path.join(python_dir, 'python.exe'), makepy, autoitx_dll]
with subprocess.Popen(command, stderr=subprocess.PIPE, cwd=python_dir, universal_newlines=True) as p:
stderr = p.communicate()[1]
print(stderr.rstrip())
parameters = re.findall(r'^Generating to .+\\([A-F0-9\-]+)x(\d+)x(\d+)x(\d+)\.py$', stderr, re.M)
if len(parameters) == 1:
parameters = parameters[0]
print('Insert the next line into AutoItLibrary.__init__.py if not exist.\n'
' win32com.client.gencache.EnsureModule("{{{guid}}}", {major}, {minor}, {lcid})'
.format(guid=parameters[0],
major=parameters[1],
minor=parameters[2],
lcid=parameters[3]))
# Pause so the user can view the subprocess output.
input('Press the return key to continue...')
The generated cache done by win32com\client\makepy.py for AutoItLibrary from the setup.py is saved in the %temp%\gen_py folder. This is done only when setup.py is executed. If the %temp% directory is cleaned later, which removes the cache, then I notice keywords like Send may fail to be recognized by the robotframework.
One solution appears to be regenerating the cache. The code above will generate the cache by use of makepy.py. It may also print a message about inserting win32com.client.gencache.EnsureModule(...) into AutoItLibrary\__init__.py for any of the Python versions as needed. This will ensure the cache is available when AutoItLibrary
is imported.
Change paths in the code to suit your environment.
With further research:
AutoItLibrary currently has AutoItX 3.3.6.1 and latest AutoIt has AutoItX 3.3.14.5. Important to know as one version registered can overwrite the registration of the previous registration.
AutoItLibrary currently registers AutoIt3X.dll without the _x64 suffix on the name on x64 systems. I may reference AutoIt3_x64.dll to define difference between x86 and x64.
Any version of AutoIt3X.dll and AutoIt3_x64.dll uses the same ID codes and the last registered wins (based on bitness as both x86 and x64 registrations can co-exist).
The TypeLib class key registered ID is {F8937E53-D444-4E71-9275-35B64210CC3B} and is where win32com may search.
If AutoIt3X.dll and AutoIt3_x64.dll are registered, unregister any 1 of those 2 will remove the AutoItX3.Control class key. Without this key, AutoIt3X will fail as AutoItLibrary needs this key. To fix, register again e.g. regsvr32.exe AutoIt3X.dll as admin in the working directory of AutoIt3X.dll.
The methods of any same version of AutoItX will match i.e. AutoIt3X.dll and AutoIt3X_x64.dll only changes in bitness, not methods.
Inserting win32com.client.gencache.EnsureModule("{F8937E53-D444-4E71-9275-35B64210CC3B}", 0, 1, 0) into AutoItLibrary\__init__.py should ensure the cache is always available for any AutoItX version. The initial code can be used to generate the cache, though the suggested change in AutoItLibrary\__init__.py makes it obsolete as the cache is generated on import of AutoItLibrary. If the ID was not constant, then the initial code may inform you of the ID to use.
The cache is important as it has generated .py files with methods like e.g.:
def Send(self, strSendText=defaultNamedNotOptArg, nMode=0):
'method Send'
# etc...
which if missing, makes Send and many others, an invalid keyword in AutoItLibrary.
If AutoItX 3.3.14.5 is registered, the - leading methods are removed and the + leading methods are added as compared to AutoItX 3.3.6.1:
-BlockInput
-CDTray
-IniDelete
-IniRead
-IniWrite
-RegDeleteKey
-RegDeleteVal
-RegEnumKey
-RegEnumVal
-RegRead
-RegWrite
-RunAsSet
+RunAs
+RunAsWait
So if any of those methods causes error, then you may want AutoItX 3.3.6.1 registered instead. In the AutoItX history, 3.3.10.0 release is when those method changes happened.
Fix:
Check your python architecture ( is it 32 or 64 bit)
For 32:
Open cmd in "Run as administrator" mode
run the command pip install robotframework-autoitlibrary
Now clone the autoit library source code:
https://github.com/nokia/robotframework-autoitlibrary
in the root directory run the below command: python setup.py install using cmd in admin mode
to navigate to root directory use the command pushd <filepath>' instead ofcd ` if cd doesn't work in cmd opened in admin mode.
For 64:
Open cmd in "Run as administrator" mode
Now clone the autoit library source code:
https://github.com/nokia/robotframework-autoitlibrary
in the root directory run the below command: python setup.py install using cmd in admin mode
to navigate to root directory use the command pushd <filepath>' instead ofcd ` if cd doesn't work in cmd opened in admin mode.
I am testing google closure compiler on command line.
I took the latest version :
java -jar closure-compiler.jar --version
Closure Compiler (http://github.com/google/closure-compiler)
Version: v20190618
Built on: 2019-06-21 17:24
I am generating a compressed version of my javascript like this :
java -jar closure-compiler.jar my_script.js > out.js
The problem is that the generated code is bigger than the one I get when I use the online service at https://closure-compiler.appspot.com/home
I noticed that the command line version added, at the beginning, the following code :
var $jscomp=$jscomp||{};$jscomp.scope={};$jscomp.findInternal=function(a,c,b){a instanceof String&&(a=String(a));for(var d=a.length,e=0;e<d;e++){var f=a[e];if(c.call(b,f,e,a))return{i:e,v:f}}return{i:-1,v:void 0}};$jscomp.ASSUME_ES5=!1;$jscomp.ASSUME_NO_NATIVE_MAP=!1;$jscomp.ASSUME_NO_NATIVE_SET=!1;$jscomp.SIMPLE_FROUND_POLYFILL=!1;
$jscomp.defineProperty=$jscomp.ASSUME_ES5||"function"==typeof Object.defineProperties?Object.defineProperty:function(a,c,b){a!=Array.prototype&&a!=Object.prototype&&(a[c]=b.value)};$jscomp.getGlobal=function(a){return"undefined"!=typeof window&&window===a?a:"undefined"!=typeof global&&null!=global?global:a};$jscomp.global=$jscomp.getGlobal(this);
$jscomp.polyfill=function(a,c,b,d){if(c){b=$jscomp.global;a=a.split(".");for(d=0;d<a.length-1;d++){var e=a[d];e in b||(b[e]={});b=b[e]}a=a[a.length-1];d=b[a];c=c(d);c!=d&&null!=c&&$jscomp.defineProperty(b,a,{configurable:!0,writable:!0,value:c})}};$jscomp.polyfill("Array.prototype.find",function(a){return a?a:function(a,b){return $jscomp.findInternal(this,a,b).v}},"es6","es3");
I do not have such a code in my script: Where does it come from ?
how can I produce the same output as the online version ?
To get the compiler command line work as the web service, I just added an option :
--language_out=ECMASCRIPT_2015
This is likely a discrepancy between the settings on the web service and the ones you're using locally.
Have a look at a Closure Compiler: Flags and Options to see what settings you might prefer.
If you'd share your source, it'd be possible to try and help you narrow down the options.
As for the extra code, I believe it is at least partially a polyfill for Array.prototype.find (aka [].find), which I assume is in your code?
If so, that's Closure injecting code to improve your cross browser compatibility.
I have sqlite3 installed in Ubuntu.
$ which sqlite3
/home/user/anaconda3/bin/sqlite3
I'm trying to install the sqlite driver in Haskell and see the following error:
$ stack install sqlite
sqlite-0.5.5: configure
sqlite-0.5.5: build
-- While building custom Setup.hs for package sqlite-0.5.5 using:
/tmp/stack16820/sqlite-0.5.5/.stack-work/dist/x86_64-linux/Cabal-2.2.0.1/setup/setup --builddir=.stack-work/dist/x86_64-linux/Cabal-2.2.0.1 build --ghc-options " -ddump-hi -ddump-to-file -fdiagnostics-color=always"
Process exited with code: ExitFailure 1
Logs have been written to: /home/user/.stack/global-project/.stack-work/logs/sqlite-0.5.5.log
[1 of 2] Compiling Main ( /tmp/stack16820/sqlite-0.5.5/Setup.hs, /tmp/stack16820/sqlite-0.5.5/.stack-work/dist/x86_64-linux/Cabal-2.2.0.1/setup/Main.o )
[2 of 2] Compiling StackSetupShim ( /home/user/.stack/setup-exe-src/setup-shim-mPHDZzAJ.hs, /tmp/stack16820/sqlite-0.5.5/.stack-work/dist/x86_64-linux/Cabal-2.2.0.1/setup/StackSetupShim.o )
Linking /tmp/stack16820/sqlite-0.5.5/.stack-work/dist/x86_64-linux/Cabal-2.2.0.1/setup/setup ...
Configuring sqlite-0.5.5...
Preprocessing library for sqlite-0.5.5..
Building library for sqlite-0.5.5..
[1 of 5] Compiling Database.SQL.Types ( Database/SQL/Types.hs, .stack-work/dist/x86_64-linux/Cabal-2.2.0.1/build/Database/SQL/Types.o )
/tmp/stack16820/sqlite-0.5.5/Database/SQL/Types.hs:481:37: error:
Ambiguous occurrence ‘<>’
It could refer to either ‘Prelude.<>’,
imported from ‘Prelude’ at Database/SQL/Types.hs:15:8-25
(and originally defined in ‘GHC.Base’)
or ‘Text.PrettyPrint.HughesPJ.<>’,
imported from ‘Text.PrettyPrint.HughesPJ’ at Database/SQL/Types.hs:56:1-32
|
481 | FunSQLExpr f es -> text f <> parens (commaH ppSQLExpr es)
| ^^
Which of ghc, stack, cabal, anaconda, sqlite should I interrogate to figure out what is failing?
I'm trying to install the sqlite driver in Haskell and see the following error
The sqlite package is deprecated in favour of sqlite-simple So, I would recommend you to not use this. If you are looking for a much higher level of interface to sqlite, I would recommend persistent library.
If you want to still make it work, the easiest way is to just fix the compile errors by forking the code and make it work with the required GHC version.
TL;DR
stack install sqlite --resolver=lts-11.22 should work
First of all i would follow sibi advise and install the maintaned package sqlite-simple.
But if you want to use the deprecated one we could analyze the error:
The error is thrown in the haskell part, the combination of stack and haskell. No mention about c code so the sqlite lib (or anaconda) is not involved here
Ambiguous occurrence ‘<>’ It could refer to either ‘Prelude.<>’, or ‘Text.PrettyPrint.HughesPJ.<>’: The simbol <> is defined in two modules and the client code doesn't disambiguate them (surely cause it was only in one module at the time)
So we have to compile with a version of Prelude or Text.PrettyPrint.HughesPJ without the definition of <>
Text.PrettyPrint.HughesPJ is a module from the pretty package and all versions of the package have the operator exported
The Prelude is defined in the base library and it is fixed for each version of ghc, that in turn is fixed for each major version of the stackage resolver. You can set the global stack resolver in ~/stack/global-project/stack.yaml or in each call to stack with the option --resolver=
The package sqlite accepts base versions in the range >=3 && <5 (in fact that is the cause of the problem, it is too flexible)
If we search for <> in the changelog of base we can see it was exported since version 4.11.0. And that version was shipped with ghc-8.4.1 (you can see the matrix between versions here). So we have to choose a stackage resolver linked to a previous version of ghc: f.e. lts-11.22 with ghc-8.2.2
After going through a lot of sites about best terminal for system admins I was trying to install on Cygwin. Unfortunately, I did not find any good site with instruction about how to do it.
Is anyone done this before? Please help me with steps and packages that I need to install.
Also is there any terminals I can try (like Cygwin)?
I don't know since what version, but now you can install terminator just from the Cygwin installer. And runs great
Regards
If you don't want to use cygwinports, you can actually install all of terminator's dependencies from the cygwin installer, except for terminator itself.
In the cygwin installer select and install:
python-dbus
python-gobject
python-gtk2.0
python-vte (under GNOME tab for some reason)
GConf2
Then, pull down the latest terminator tarball from https://launchpad.net/terminator/+download and extract it somewhere. In a administrator terminal just run python setup.py install and as long as you have a running X server just running terminator will work perfectly.
The sources about how to install terminator are a bit obscures. What I did, and may help you, was this: (although I'm still having segmentation faults errors)
Update your Cygwin to the latest
Open a Cygwin terminal and run: (if you have the x86 version use that. The idea of this step is to use Cygwin Ports)
cygstart -- /your/cygwin/path/setup-x86_64.exe -K http://cygwinports.org/ports.gpg
In the section Choose A Download Site:
Add "http://downloads.sourceforge.net/cygwin-ports"
Add " ftp://ftp.cygwinports.org/pub/cygwinports"
Select another mirror close to you
Check that you have a total of three URLs selected
It may show you warning about not loading the .ini configuration but ignore them (Note: I looked for different port URLs but the official ones threw me errors and I could not pass this step, that's why I used alternatives URLs)
First, you need to install the packages for the X Window:
http://x.cygwin.com/docs/ug/setup.html
Basically they are:
xorg-server (required, the Cygwin/X X Server)
xinit (required, scripts for starting the X server: xinit, startx, startwin (and a shortcut on the Start Menu to run it), startxdmcp.bat )
xorg-docs (optional, man pages)
Also search and select the terminator package
It takes quite a while before it finishes.
Go to Start->All Programs->Cygwin-X->X Win Server (windows tool bar)
A xterm window should open. Type:
terminator
You should know have terminator with Cygwin.
Note: After I run terminator I get this error:
/usr/lib/python2.7/site-packages/terminatorlib/terminator.py:87: Warning: Attempt to add property GnomeProgram::sm-connect after class was initialised
self.gnome_program = gnome.init(APP_NAME, APP_VERSION)
/usr/lib/python2.7/site-packages/terminatorlib/terminator.py:87: Warning: Attempt to add property GnomeProgram::show-crash-dialog after class was initialised
self.gnome_program = gnome.init(APP_NAME, APP_VERSION)
/usr/lib/python2.7/site-packages/terminatorlib/terminator.py:87: Warning: Attempt to add property GnomeProgram::display after class was initialised
self.gnome_program = gnome.init(APP_NAME, APP_VERSION)
/usr/lib/python2.7/site-packages/terminatorlib/terminator.py:87: Warning: Attempt to add property GnomeProgram::default-icon after class was initialised
self.gnome_program = gnome.init(APP_NAME, APP_VERSION)
Warning: python-keybinder is not installed. This means the hide_window shortcut will be unavailable
Unable to bind hide_window key, another instance/window has it.
Segmentation fault (core dumped)
I've looking to fix this issue but sadly I couldn't find anything. If you use Cygwin x86 your outcome can be different.
Hope this can help you.
On the console.. I get the following -
Usage: java [-options] class [args...]
(to execute a class)
or java [-jar] [-options] jarfile [args...]
(to execute a jar file)
where options include:
-cp -classpath <directories and zip/jar files separated by ;>
set search path for application classes and resources
-D<name>=<value>
set a system property
-verbose[:class|gc|jni]
enable verbose output
-version print product version
-version:<value>
require the specified version to run
-showversion print product version and continue
-jre-restrict-search | -no-jre-restrict-search
include/exclude user private JREs in the version search
-agentlib:<libname>[=<options>]
load native agent library <libname>, e.g. -agentlib:hprof
see also, -agentlib:jdwp=help and -agentlib:hprof=help
-agentpath:<pathname>[=<options>]
load native agent library by full pathname
-javaagent:<jarpath>[=<options>]
load Java programming language agent, see java.lang.instrument
-? -help print this help message
-X print help on non-standard options
-splash:<imagepath> show splash screen with specified image
-ea[:<packagename>...|:<classname>]
-enableassertions[:<packagename>...|:<classname>]
enable assertions
-da[:<packagename>...|:<classname>]
-disableassertions[:<packagename>...|:<classname>]
disable assertions
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions
Eventually the server doesn't start and gets stopped after time-out. The Server was working fine. However, I wanted to restart it. I stopped the server completely and tried starting it. Since then I am facing this issue.
You can check the script that is getting executed when you right click and start the server.
Check if there are any unwanted entries in the java options which does not confirm to the java command line.