Compile issue with big maven project which has multiple moudle

[XuPengfei-1020]

cannot find symbol
package xxx does not exist
...

What the key point is, if I reopen the vscode or rebuild all projects, the error is changed!
Some errors in A.java this time, it will disappear if I rebuild, meanwhile B.java which previously is all fine but become reported some error this time.
Or if I make some change on pom.xml, the error is gone, but they will come back soon or later....

Am I missing or making wrong config of this extension？
Have you tried some big project like trino or presto in this extension?

[XuPengfei-1020]

I hive try "clean java language server workspace" several times, issue is still here.
Even some class can not find the symbol in another class which in the same module.
💔

[XuPengfei-1020]

server.log

[mamilic]

Hi @XuPengfei-1020 , I've just tried to import the, https://github.com/trinodb/trino and it works like a charm, imported from first try.

In this extension there is one tricky thing that might be causing this, and it is guessing/setting the java version for compiler to use, as mentioned here. You can navigate to Project Settings by Double Shift and then ">java: open project settings"
#3857 (comment)

If this is the case, then it might be good idea to notify user on the first import whether the Java Version guessed for the project is the correct one. Or perhaps adding to the bottom status bar Java Version used by the project/workspace.

[XuPengfei-1020]

@mamilic Thanks you for replay!
But didn't you get much compile error after built project(Trino)?
I get many compile error(more than 1k), and most of them are pertty unreasonable.
Class is just beside but the error told me that it can not be found.

Whats more, you need to run mvn package -pl 'core/trino-grammar' to compile the grammar module which will generate some classes dependend by other modules.
Trino project(master branch) now need jdk23, I checked the project setting and I am sure that I have set it correctly.
It there some wrong setting I made?

[XuPengfei-1020]

And it want to eat all memory of my laptop while build this big project (I gave the jvm 4g for max heap size).

[XuPengfei-1020]

So many compile errors after build.

[XuPengfei-1020]

I found that if a maven dependency which scope is 'test', then it seems can not be resolved correctly.
Almost all of the errors related a 'test' scope maven reference.

[XuPengfei-1020]

Found a param "java.import.maven.disableTestClasspathFlag": true, I am trying it, and update here later.

#2569

[mamilic]

Hi @XuPengfei-1020 , I was able to import it, and run test but only via "Testing",
It took a long time, however as you can see, when I opened the project for second time I got warning in bottom left corner for Java Language Server with error.

Details

!ENTRY org.eclipse.jdt.ls.core 4 0 2024-11-23 13:56:55.426
!MESSAGE Error in calling delegate command handler
!STACK 1
Java Model Exception: Error in Java Model (code 969): trino-docs does not exist
	at org.eclipse.jdt.internal.core.JavaElement.newNotPresentException(JavaElement.java:546)
	at org.eclipse.jdt.internal.core.JavaModelManager.getPerProjectInfoCheckExistence(JavaModelManager.java:2533)
	at org.eclipse.jdt.internal.core.JavaProject.getPerProjectInfo(JavaProject.java:2329)
	at org.eclipse.jdt.internal.core.JavaProject.getResolvedClasspath(JavaProject.java:2402)
	at org.eclipse.jdt.internal.core.JavaProject.getAllPackageFragmentRoots(JavaProject.java:1774)
	at org.eclipse.jdt.internal.core.JavaProject.getAllPackageFragmentRoots(JavaProject.java:1765)
	at com.microsoft.jdtls.ext.core.ProjectCommand.getMainClasses(ProjectCommand.java:243)
	at com.microsoft.jdtls.ext.core.CommandHandler.executeCommand(CommandHandler.java:35)
	at org.eclipse.jdt.ls.core.internal.handlers.WorkspaceExecuteCommandHandler$1.run(WorkspaceExecuteCommandHandler.java:230)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.jdt.ls.core.internal.handlers.WorkspaceExecuteCommandHandler.executeCommand(WorkspaceExecuteCommandHandler.java:220)
	at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.lambda$4(JDTLanguageServer.java:609)
	at org.eclipse.jdt.ls.core.internal.BaseJDTLanguageServer.lambda$0(BaseJDTLanguageServer.java:87)
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture$Completion.exec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)
!SUBENTRY 1 org.eclipse.jdt.core 4 969 2024-11-23 13:56:55.426
!MESSAGE trino-docs does not exist

And also I have a buch of JDT compiler issues,

But the code navigation somewhat works, as for some methods it takes quite some time to complete the request.
Also, I am using Linux and default JDK is set to Java23.

[XuPengfei-1020]

Yes, this project is pretty huge, compiling always cost more than 1 hour on my laptop.
What errors we met is mostly referenced by maven whic scope are 'test'.

I set "java.import.maven.disableTestClasspathFlag": true and try it again(after that I run maven package to ensure all the maven reference is downloaded to my local repo) this time, the compiler seems can never finished, it run for several hours, sallow huge memory and boost cpu at high level.
I run clean java server language workspace and try again, it does not changed.
Whats more, I get error:

Anyway, it seems can not take over such huge java maven projects for now, neither for performance nor some critical bugs.
But it is still the best(and alomost only) extension for java language on vscode, I wish it be better and better.