Re: [basex-talk] Reloading jars on a running http server.
Hi Reece,
> You'll need to copy the kotlin-stdlib-1.4.32.jar file in addition to the
> test.jar file to BaseX's lib directory.
Please note that JAR libraries will only be unregistered after query
evalution if they are moved into the repo directory. If a library is
copied into the lib directory, it will be added to the static
classpath.
In the given case, you could probably keep kotlin-stdlib-1.4.32.jar in
the lib directory, but you’ll need to keep your development code in
the repository (as described in the Wiki). It’s no problem, though, to
directly modify the repo code (you don’t have to use REPO INSTALL or
repo:install for that).
If the problem persists, feel free to send me a little test.jar, I can
then do further testing.
Hope this helps,
Christian
On Fri, Apr 30, 2021 at 9:14 AM Reece Dunn wrote:
>
> Hi Christian,
>
> I'm not seeing any exceptions in the console window, even when enabling the
> debug setting. I'm using the AdoptOpenJDK 1.8. I also have AdoptOpenJDK 11,
> but I assume that will have the issue you described.
>
> It's a custom-built jar using Kotlin, built via gradle.
>
> One thing that it could be is that I'm using Kotlin objects (not classes),
> e.g.:
>
> package test
> object Test { fun f(): String = "test" }
>
> and using it like:
>
> declare namespace Test = "java:test.Test";
>
> declare function test:f() as xs:string {
> Test::f(Test::INSTANCE())
> };
>
> The build.gradle file is simple. It looks something like this (removing
> things like the junit configuration):
>
> -
> buildscript {
> ext.kotlin_version = "1.4.32"
> ext.kotlin_stdlib = "kotlin-stdlib"
> ext.java_version = "1.8"
>
> repositories { mavenCentral() }
> dependencies { classpath
> "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" }
> }
>
> apply plugin: 'kotlin'
>
> repositories {
> mavenCentral()
> mavenLocal()
> }
>
> compileKotlin { kotlinOptions { jvmTarget = java_version } }
> compileTestKotlin { kotlinOptions { jvmTarget = java_version } }
>
> dependencies {
> implementation "org.jetbrains.kotlin:$kotlin_stdlib:$kotlin_version"
> }
> -
>
> You'll need to copy the kotlin-stdlib-1.4.32.jar file in addition to the
> test.jar file to BaseX's lib directory.
>
> Kind regards,
> Reece
>
> On Fri, 30 Apr 2021 at 07:48, Christian Grün
> wrote:
>>
>> Hi Reece,
>>
>> I’m sorry to hear that. Did you build a custom JAR file, or do you
>> encounter problems with the JDK?
>>
>> Cheers,
>> Christian
>>
>>
>>
>> On Thu, Apr 29, 2021 at 9:48 PM Reece Dunn wrote:
>> >
>> > Hi Christian,
>> >
>> > Thanks for the response. Unfortunately, I've not been able to get the
>> > reloading working.
>> >
>> > Kind regards,
>> > Reece
>> >
>> > On Wed, 21 Apr 2021 at 18:49, Christian Grün
>> > wrote:
>> >>
>> >> Hi Reece,
>> >>
>> >> If you install your Java code as JAR file in the repository [1], the
>> >> code will be loaded and unloaded every time when your query is
>> >> executed. If you get an error message…
>> >>
>> >> java.lang.reflect.InaccessibleObjectException: Unable to make field
>> >> private final jdk.internal.loader.URLClassPath
>> >> java.net.URLClassLoader.ucp accessible: module java.base does not
>> >> "opens java.net" to unnamed module @79e2c065
>> >>
>> >> …unloading fails [2], as you’re probably using a more recent version
>> >> of the JDK, which restricts reflective access to internal variables.
>> >> You can get around this by adding Java flags at startup time:
>> >>
>> >> --add-opens java.base/java.net=ALL-UNNAMED
>> >> --add-opens java.base/jdk.internal.loader=ALL-UNNAMED
>> >>
>> >> Maybe there are better solutions to unload JAR files today.
>> >> Suggestions are welcome!
>> >>
>> >> Hope this helps,
>> >> Christian
>> >>
>> >> [1] https://docs.basex.org/wiki/Repository#Java
>> >> [2]
>> >> https://github.com/BaseXdb/basex/blob/master/basex-core/src/main/java/org/basex/util/JarLoader.java#L34
>> >>
>> >>
>> >>
>> >> On Tue, Apr 20, 2021 at 6:44 PM Reece Dunn wrote:
>> >> >
>> >> > Hi all,
>> >> >
>> >> > I'm working on a Java class that I'm importing into an XQuery, so I can
>> >> > do additional processing on the data that isn't easily expressible in
>> >> > XQuery (or XSLT). In order to get BaseX to pick up a modified version
>> >> > of the jar file I'm building, I'm restarting the BaseX http server.
>> >> >
>> >> > This makes it slower to turn around testing the changes. Is there a
>> >> > better way of doing this?
>> >> >
>> >> > Kind regards,
>> >> > Reece
Re: [basex-talk] Reloading jars on a running http server.
Hi Christian,
I'm not seeing any exceptions in the console window, even when enabling the
debug setting. I'm using the AdoptOpenJDK 1.8. I also have AdoptOpenJDK 11,
but I assume that will have the issue you described.
It's a custom-built jar using Kotlin, built via gradle.
One thing that it could be is that I'm using Kotlin objects (not classes),
e.g.:
package test
object Test { fun f(): String = "test" }
and using it like:
declare namespace Test = "java:test.Test";
declare function test:f() as xs:string {
Test::f(Test::INSTANCE())
};
The build.gradle file is simple. It looks something like this (removing
things like the junit configuration):
-
buildscript {
ext.kotlin_version = "1.4.32"
ext.kotlin_stdlib = "kotlin-stdlib"
ext.java_version = "1.8"
repositories { mavenCentral() }
dependencies { classpath
"org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" }
}
apply plugin: 'kotlin'
repositories {
mavenCentral()
mavenLocal()
}
compileKotlin { kotlinOptions { jvmTarget = java_version } }
compileTestKotlin { kotlinOptions { jvmTarget = java_version } }
dependencies {
implementation "org.jetbrains.kotlin:$kotlin_stdlib:$kotlin_version"
}
-
You'll need to copy the kotlin-stdlib-1.4.32.jar file in addition to the
test.jar file to BaseX's lib directory.
Kind regards,
Reece
On Fri, 30 Apr 2021 at 07:48, Christian Grün
wrote:
> Hi Reece,
>
> I’m sorry to hear that. Did you build a custom JAR file, or do you
> encounter problems with the JDK?
>
> Cheers,
> Christian
>
>
>
> On Thu, Apr 29, 2021 at 9:48 PM Reece Dunn wrote:
> >
> > Hi Christian,
> >
> > Thanks for the response. Unfortunately, I've not been able to get the
> reloading working.
> >
> > Kind regards,
> > Reece
> >
> > On Wed, 21 Apr 2021 at 18:49, Christian Grün
> wrote:
> >>
> >> Hi Reece,
> >>
> >> If you install your Java code as JAR file in the repository [1], the
> >> code will be loaded and unloaded every time when your query is
> >> executed. If you get an error message…
> >>
> >> java.lang.reflect.InaccessibleObjectException: Unable to make field
> >> private final jdk.internal.loader.URLClassPath
> >> java.net.URLClassLoader.ucp accessible: module java.base does not
> >> "opens java.net" to unnamed module @79e2c065
> >>
> >> …unloading fails [2], as you’re probably using a more recent version
> >> of the JDK, which restricts reflective access to internal variables.
> >> You can get around this by adding Java flags at startup time:
> >>
> >> --add-opens java.base/java.net=ALL-UNNAMED
> >> --add-opens java.base/jdk.internal.loader=ALL-UNNAMED
> >>
> >> Maybe there are better solutions to unload JAR files today.
> >> Suggestions are welcome!
> >>
> >> Hope this helps,
> >> Christian
> >>
> >> [1] https://docs.basex.org/wiki/Repository#Java
> >> [2]
> https://github.com/BaseXdb/basex/blob/master/basex-core/src/main/java/org/basex/util/JarLoader.java#L34
> >>
> >>
> >>
> >> On Tue, Apr 20, 2021 at 6:44 PM Reece Dunn
> wrote:
> >> >
> >> > Hi all,
> >> >
> >> > I'm working on a Java class that I'm importing into an XQuery, so I
> can do additional processing on the data that isn't easily expressible in
> XQuery (or XSLT). In order to get BaseX to pick up a modified version of
> the jar file I'm building, I'm restarting the BaseX http server.
> >> >
> >> > This makes it slower to turn around testing the changes. Is there a
> better way of doing this?
> >> >
> >> > Kind regards,
> >> > Reece
>
Re: [basex-talk] Reloading jars on a running http server.
Hi Reece, I’m sorry to hear that. Did you build a custom JAR file, or do you encounter problems with the JDK? Cheers, Christian On Thu, Apr 29, 2021 at 9:48 PM Reece Dunn wrote: > > Hi Christian, > > Thanks for the response. Unfortunately, I've not been able to get the > reloading working. > > Kind regards, > Reece > > On Wed, 21 Apr 2021 at 18:49, Christian Grün > wrote: >> >> Hi Reece, >> >> If you install your Java code as JAR file in the repository [1], the >> code will be loaded and unloaded every time when your query is >> executed. If you get an error message… >> >> java.lang.reflect.InaccessibleObjectException: Unable to make field >> private final jdk.internal.loader.URLClassPath >> java.net.URLClassLoader.ucp accessible: module java.base does not >> "opens java.net" to unnamed module @79e2c065 >> >> …unloading fails [2], as you’re probably using a more recent version >> of the JDK, which restricts reflective access to internal variables. >> You can get around this by adding Java flags at startup time: >> >> --add-opens java.base/java.net=ALL-UNNAMED >> --add-opens java.base/jdk.internal.loader=ALL-UNNAMED >> >> Maybe there are better solutions to unload JAR files today. >> Suggestions are welcome! >> >> Hope this helps, >> Christian >> >> [1] https://docs.basex.org/wiki/Repository#Java >> [2] >> https://github.com/BaseXdb/basex/blob/master/basex-core/src/main/java/org/basex/util/JarLoader.java#L34 >> >> >> >> On Tue, Apr 20, 2021 at 6:44 PM Reece Dunn wrote: >> > >> > Hi all, >> > >> > I'm working on a Java class that I'm importing into an XQuery, so I can do >> > additional processing on the data that isn't easily expressible in XQuery >> > (or XSLT). In order to get BaseX to pick up a modified version of the jar >> > file I'm building, I'm restarting the BaseX http server. >> > >> > This makes it slower to turn around testing the changes. Is there a better >> > way of doing this? >> > >> > Kind regards, >> > Reece
Re: [basex-talk] Reloading jars on a running http server.
Hi Christian, Thanks for the response. Unfortunately, I've not been able to get the reloading working. Kind regards, Reece On Wed, 21 Apr 2021 at 18:49, Christian Grün wrote: > Hi Reece, > > If you install your Java code as JAR file in the repository [1], the > code will be loaded and unloaded every time when your query is > executed. If you get an error message… > > java.lang.reflect.InaccessibleObjectException: Unable to make field > private final jdk.internal.loader.URLClassPath > java.net.URLClassLoader.ucp accessible: module java.base does not > "opens java.net" to unnamed module @79e2c065 > > …unloading fails [2], as you’re probably using a more recent version > of the JDK, which restricts reflective access to internal variables. > You can get around this by adding Java flags at startup time: > > --add-opens java.base/java.net=ALL-UNNAMED > --add-opens java.base/jdk.internal.loader=ALL-UNNAMED > > Maybe there are better solutions to unload JAR files today. > Suggestions are welcome! > > Hope this helps, > Christian > > [1] https://docs.basex.org/wiki/Repository#Java > [2] > https://github.com/BaseXdb/basex/blob/master/basex-core/src/main/java/org/basex/util/JarLoader.java#L34 > > > > On Tue, Apr 20, 2021 at 6:44 PM Reece Dunn wrote: > > > > Hi all, > > > > I'm working on a Java class that I'm importing into an XQuery, so I can > do additional processing on the data that isn't easily expressible in > XQuery (or XSLT). In order to get BaseX to pick up a modified version of > the jar file I'm building, I'm restarting the BaseX http server. > > > > This makes it slower to turn around testing the changes. Is there a > better way of doing this? > > > > Kind regards, > > Reece >
Re: [basex-talk] Reloading jars on a running http server.
Hi Reece, If you install your Java code as JAR file in the repository [1], the code will be loaded and unloaded every time when your query is executed. If you get an error message… java.lang.reflect.InaccessibleObjectException: Unable to make field private final jdk.internal.loader.URLClassPath java.net.URLClassLoader.ucp accessible: module java.base does not "opens java.net" to unnamed module @79e2c065 …unloading fails [2], as you’re probably using a more recent version of the JDK, which restricts reflective access to internal variables. You can get around this by adding Java flags at startup time: --add-opens java.base/java.net=ALL-UNNAMED --add-opens java.base/jdk.internal.loader=ALL-UNNAMED Maybe there are better solutions to unload JAR files today. Suggestions are welcome! Hope this helps, Christian [1] https://docs.basex.org/wiki/Repository#Java [2] https://github.com/BaseXdb/basex/blob/master/basex-core/src/main/java/org/basex/util/JarLoader.java#L34 On Tue, Apr 20, 2021 at 6:44 PM Reece Dunn wrote: > > Hi all, > > I'm working on a Java class that I'm importing into an XQuery, so I can do > additional processing on the data that isn't easily expressible in XQuery (or > XSLT). In order to get BaseX to pick up a modified version of the jar file > I'm building, I'm restarting the BaseX http server. > > This makes it slower to turn around testing the changes. Is there a better > way of doing this? > > Kind regards, > Reece
[basex-talk] Reloading jars on a running http server.
Hi all, I'm working on a Java class that I'm importing into an XQuery, so I can do additional processing on the data that isn't easily expressible in XQuery (or XSLT). In order to get BaseX to pick up a modified version of the jar file I'm building, I'm restarting the BaseX http server. This makes it slower to turn around testing the changes. Is there a better way of doing this? Kind regards, Reece
