Unable to Compile Maven Project with Guava and Gson using j2cl-maven-plugin #206

loveslikey · 2023-08-11T04:16:45Z

loveslikey
Aug 11, 2023

I am currently working on a project where I'm attempting to use the j2cl-maven-plugin to compile Java code for use in a browser environment. I've noticed that in the official demo, bazel-helloworld, libraries like Gson and Guava are being utilized successfully. However, when I try to import these same libraries (e.g., Guava) into my Maven project using the j2cl-maven-plugin, the compilation fails.
I've searched for documentation or examples that might explain how to properly include these libraries in a Maven project with j2cl-maven-plugin, but haven't found anything relevant.

Could you please provide guidance on how to successfully use libraries like Gson and Guava with j2cl-maven-plugin in a Maven project? Is there a special configuration or additional steps that I need to follow?

Thank you for your assistance!

Answered by treblereel

Aug 11, 2023

for (T val : value) {
BaseCollectionJsonDeserializer.this.deserializer.setBackReference(referenceName,reference,val,ctx);
}

Hmm, it was a j2cl bug, that has been fix long ago, as far as I remember, the workaround is to cast the value to an array of T.
looks like it's outdated version of domino-jackson
try this one https://mvnrepository.com/artifact/org.dominokit/domino-jackson/1.0.0

View full answer

gkdn · 2023-08-11T05:24:42Z

gkdn
Aug 11, 2023
Maintainer

@niloc132

0 replies

treblereel · 2023-08-11T05:27:40Z

treblereel
Aug 11, 2023

@loveslikey May I ask you to provide us with a build log?

6 replies

treblereel Aug 11, 2023

Thanks, hmm, are you sure com.google.code.gson works with bazel's j2cl? I am asking because java.lang.reflect.* and java.text.DateFormat is not parts of j2cl emul.

To work with JSON in gwt/j2cl we have https://github.com/DominoKit/domino-jackson

loveslikey Aug 11, 2023
Author

ok，thank you! when i use [domino-jackson],here is the error log:

[ERROR] Exception executing task org.dominokit:domino-jackson:1.0.0-RC3/transpiled_js
com.google.j2cl.common.visitor.ProcessorError: Context:
void BaseCollectionJsonDeserializer.setBackReference(String referenceName, Object reference, C value, JsonDeserializationContext ctx) {
if (((null != value) && !value.isEmpty())) {
for (T val : value) {
BaseCollectionJsonDeserializer.this.deserializer.setBackReference(referenceName,reference,val,ctx);
}
}
}
at com.google.j2cl.transpiler.ast.Visitor_ForEachStatement.visit (Visitor_ForEachStatement.java:27)
at com.google.j2cl.transpiler.ast.ForEachStatement.accept (ForEachStatement.java:66)
at com.google.j2cl.transpiler.ast.Visitor_Block.lambda$visitMembers$0 (Visitor_Block.java:47)
at com.google.j2cl.common.visitor.ListVisitor.visit (ListVisitor.java:26)
at com.google.j2cl.transpiler.ast.Visitor_Block.visitMembers (Visitor_Block.java:45)
at com.google.j2cl.transpiler.ast.Visitor_Block.visit (Visitor_Block.java:19)
at com.google.j2cl.transpiler.ast.Block.accept (Block.java:55)
at com.google.j2cl.transpiler.ast.Visitor_IfStatement.visitMembers (Visitor_IfStatement.java:49)
at com.google.j2cl.transpiler.ast.Visitor_IfStatement.visit (Visitor_IfStatement.java:19)
at com.google.j2cl.transpiler.ast.IfStatement.accept (IfStatement.java:66)
at com.google.j2cl.transpiler.ast.Visitor_Block.lambda$visitMembers$0 (Visitor_Block.java:47)
at com.google.j2cl.common.visitor.ListVisitor.visit (ListVisitor.java:26)
at com.google.j2cl.transpiler.ast.Visitor_Block.visitMembers (Visitor_Block.java:45)
at com.google.j2cl.transpiler.ast.Visitor_Block.visit (Visitor_Block.java:19)
at com.google.j2cl.transpiler.ast.Block.accept (Block.java:55)
at com.google.j2cl.transpiler.ast.Visitor_Method.visitMembers (Visitor_Method.java:49)
at com.google.j2cl.transpiler.ast.Visitor_Method.visit (Visitor_Method.java:19)
at com.google.j2cl.transpiler.ast.Method.accept (Method.java:155)
at com.google.j2cl.transpiler.ast.Visitor_Type.lambda$visitMembers$0 (Visitor_Type.java:51)
at com.google.j2cl.common.visitor.ListVisitor.visit (ListVisitor.java:26)
at com.google.j2cl.transpiler.ast.Visitor_Type.visitMembers (Visitor_Type.java:49)
at com.google.j2cl.transpiler.ast.Visitor_Type.visit (Visitor_Type.java:19)
at com.google.j2cl.transpiler.ast.Type.accept (Type.java:318)
at com.google.j2cl.transpiler.ast.Visitor_CompilationUnit.lambda$visitMembers$0 (Visitor_CompilationUnit.java:51)
at com.google.j2cl.common.visitor.ListVisitor.visit (ListVisitor.java:26)
at com.google.j2cl.transpiler.ast.Visitor_CompilationUnit.visitMembers (Visitor_CompilationUnit.java:49)
at com.google.j2cl.transpiler.ast.Visitor_CompilationUnit.visit (Visitor_CompilationUnit.java:19)
at com.google.j2cl.transpiler.ast.CompilationUnit.accept (CompilationUnit.java:93)
at com.google.j2cl.transpiler.passes.NormalizeForEachStatement.applyTo (NormalizeForEachStatement.java:53)
at com.google.j2cl.transpiler.passes.NormalizationPass$1.enterCompilationUnit (NormalizationPass.java:31)
at com.google.j2cl.transpiler.ast.AbstractVisitor.shouldProcessCompilationUnit (AbstractVisitor.java:62)
at com.google.j2cl.transpiler.ast.Visitor_CompilationUnit.visit (Visitor_CompilationUnit.java:17)
at com.google.j2cl.transpiler.ast.CompilationUnit.accept (CompilationUnit.java:93)
at com.google.j2cl.transpiler.passes.NormalizationPass.execute (NormalizationPass.java:41)
at com.google.j2cl.transpiler.J2clTranspiler.runPasses (J2clTranspiler.java:110)
at com.google.j2cl.transpiler.J2clTranspiler.desugarLibrary (J2clTranspiler.java:88)
at com.google.j2cl.transpiler.J2clTranspiler.transpileImpl (J2clTranspiler.java:80)
at com.google.j2cl.transpiler.J2clTranspiler.lambda$transpile$0 (J2clTranspiler.java:44)
at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:577)
at java.util.concurrent.FutureTask.run (FutureTask.java:317)
at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1144)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:642)
at java.lang.Thread.run (Thread.java:1589)
Caused by: com.google.j2cl.common.visitor.ProcessorError: Error while processing:
for (T val : value) {
BaseCollectionJsonDeserializer.this.deserializer.setBackReference(referenceName,reference,val,ctx);
}
at com.google.j2cl.transpiler.ast.Visitor_ForEachStatement.visit (Visitor_ForEachStatement.java:27)
at com.google.j2cl.transpiler.ast.ForEachStatement.accept (ForEachStatement.java:66)
at com.google.j2cl.transpiler.ast.Visitor_Block.lambda$visitMembers$0 (Visitor_Block.java:47)
at com.google.j2cl.common.visitor.ListVisitor.visit (ListVisitor.java:26)
at com.google.j2cl.transpiler.ast.Visitor_Block.visitMembers (Visitor_Block.java:45)
at com.google.j2cl.transpiler.ast.Visitor_Block.visit (Visitor_Block.java:19)
at com.google.j2cl.transpiler.ast.Block.accept (Block.java:55)
at com.google.j2cl.transpiler.ast.Visitor_IfStatement.visitMembers (Visitor_IfStatement.java:49)
at com.google.j2cl.transpiler.ast.Visitor_IfStatement.visit (Visitor_IfStatement.java:19)
at com.google.j2cl.transpiler.ast.IfStatement.accept (IfStatement.java:66)
at com.google.j2cl.transpiler.ast.Visitor_Block.lambda$visitMembers$0 (Visitor_Block.java:47)
at com.google.j2cl.common.visitor.ListVisitor.visit (ListVisitor.java:26)
at com.google.j2cl.transpiler.ast.Visitor_Block.visitMembers (Visitor_Block.java:45)
at com.google.j2cl.transpiler.ast.Visitor_Block.visit (Visitor_Block.java:19)
at com.google.j2cl.transpiler.ast.Block.accept (Block.java:55)
at com.google.j2cl.transpiler.ast.Visitor_Method.visitMembers (Visitor_Method.java:49)
at com.google.j2cl.transpiler.ast.Visitor_Method.visit (Visitor_Method.java:19)
at com.google.j2cl.transpiler.ast.Method.accept (Method.java:155)
at com.google.j2cl.transpiler.ast.Visitor_Type.lambda$visitMembers$0 (Visitor_Type.java:51)
at com.google.j2cl.common.visitor.ListVisitor.visit (ListVisitor.java:26)
at com.google.j2cl.transpiler.ast.Visitor_Type.visitMembers (Visitor_Type.java:49)
at com.google.j2cl.transpiler.ast.Visitor_Type.visit (Visitor_Type.java:19)
at com.google.j2cl.transpiler.ast.Type.accept (Type.java:318)
at com.google.j2cl.transpiler.ast.Visitor_CompilationUnit.lambda$visitMembers$0 (Visitor_CompilationUnit.java:51)
at com.google.j2cl.common.visitor.ListVisitor.visit (ListVisitor.java:26)
at com.google.j2cl.transpiler.ast.Visitor_CompilationUnit.visitMembers (Visitor_CompilationUnit.java:49)
at com.google.j2cl.transpiler.ast.Visitor_CompilationUnit.visit (Visitor_CompilationUnit.java:19)
at com.google.j2cl.transpiler.ast.CompilationUnit.accept (CompilationUnit.java:93)
at com.google.j2cl.transpiler.passes.NormalizeForEachStatement.applyTo (NormalizeForEachStatement.java:53)
at com.google.j2cl.transpiler.passes.NormalizationPass$1.enterCompilationUnit (NormalizationPass.java:31)
at com.google.j2cl.transpiler.ast.AbstractVisitor.shouldProcessCompilationUnit (AbstractVisitor.java:62)
at com.google.j2cl.transpiler.ast.Visitor_CompilationUnit.visit (Visitor_CompilationUnit.java:17)
at com.google.j2cl.transpiler.ast.CompilationUnit.accept (CompilationUnit.java:93)
at com.google.j2cl.transpiler.passes.NormalizationPass.execute (NormalizationPass.java:41)
at com.google.j2cl.transpiler.J2clTranspiler.runPasses (J2clTranspiler.java:110)
at com.google.j2cl.transpiler.J2clTranspiler.desugarLibrary (J2clTranspiler.java:88)
at com.google.j2cl.transpiler.J2clTranspiler.transpileImpl (J2clTranspiler.java:80)
at com.google.j2cl.transpiler.J2clTranspiler.lambda$transpile$0 (J2clTranspiler.java:44)
at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:577)
at java.util.concurrent.FutureTask.run (FutureTask.java:317)
at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1144)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:642)
at java.lang.Thread.run (Thread.java:1589)
Caused by: java.lang.ClassCastException: class com.google.j2cl.transpiler.ast.AutoValue_TypeVariable cannot be cast to class com.google.j2cl.transpiler.ast.DeclaredTypeDescriptor (com.google.j2cl.transpiler.ast.AutoValue_TypeVariable and com.google.j2cl.transpiler.ast.DeclaredTypeDescriptor are in unnamed module of loader org.codehaus.plexus.classworlds.realm.ClassRealm @6f6cc7da)
at com.google.j2cl.transpiler.ast.TypeDescriptor.toBoxedType (TypeDescriptor.java:149)
at com.google.j2cl.transpiler.passes.NormalizeForEachStatement.maybeAddCast (NormalizeForEachStatement.java:260)
at com.google.j2cl.transpiler.passes.NormalizeForEachStatement.convertForEachIterable (NormalizeForEachStatement.java:183)
at com.google.j2cl.transpiler.passes.NormalizeForEachStatement.access$100 (NormalizeForEachStatement.java:43)
at com.google.j2cl.transpiler.passes.NormalizeForEachStatement$1.rewriteForEachStatement (NormalizeForEachStatement.java:62)
at com.google.j2cl.transpiler.passes.NormalizeForEachStatement$1.rewriteForEachStatement (NormalizeForEachStatement.java:54)
at com.google.j2cl.transpiler.ast.AbstractRewriter.postProcessForEachStatement (AbstractRewriter.java:375)
at com.google.j2cl.transpiler.ast.Visitor_ForEachStatement.visit (Visitor_ForEachStatement.java:22)
at com.google.j2cl.transpiler.ast.ForEachStatement.accept (ForEachStatement.java:66)
at com.google.j2cl.transpiler.ast.Visitor_Block.lambda$visitMembers$0 (Visitor_Block.java:47)
at com.google.j2cl.common.visitor.ListVisitor.visit (ListVisitor.java:26)
at com.google.j2cl.transpiler.ast.Visitor_Block.visitMembers (Visitor_Block.java:45)
at com.google.j2cl.transpiler.ast.Visitor_Block.visit (Visitor_Block.java:19)
at com.google.j2cl.transpiler.ast.Block.accept (Block.java:55)
at com.google.j2cl.transpiler.ast.Visitor_IfStatement.visitMembers (Visitor_IfStatement.java:49)
at com.google.j2cl.transpiler.ast.Visitor_IfStatement.visit (Visitor_IfStatement.java:19)
at com.google.j2cl.transpiler.ast.IfStatement.accept (IfStatement.java:66)
at com.google.j2cl.transpiler.ast.Visitor_Block.lambda$visitMembers$0 (Visitor_Block.java:47)
at com.google.j2cl.common.visitor.ListVisitor.visit (ListVisitor.java:26)
at com.google.j2cl.transpiler.ast.Visitor_Block.visitMembers (Visitor_Block.java:45)
at com.google.j2cl.transpiler.ast.Visitor_Block.visit (Visitor_Block.java:19)
at com.google.j2cl.transpiler.ast.Block.accept (Block.java:55)
at com.google.j2cl.transpiler.ast.Visitor_Method.visitMembers (Visitor_Method.java:49)
at com.google.j2cl.transpiler.ast.Visitor_Method.visit (Visitor_Method.java:19)
at com.google.j2cl.transpiler.ast.Method.accept (Method.java:155)
at com.google.j2cl.transpiler.ast.Visitor_Type.lambda$visitMembers$0 (Visitor_Type.java:51)
at com.google.j2cl.common.visitor.ListVisitor.visit (ListVisitor.java:26)
at com.google.j2cl.transpiler.ast.Visitor_Type.visitMembers (Visitor_Type.java:49)
at com.google.j2cl.transpiler.ast.Visitor_Type.visit (Visitor_Type.java:19)
at com.google.j2cl.transpiler.ast.Type.accept (Type.java:318)
at com.google.j2cl.transpiler.ast.Visitor_CompilationUnit.lambda$visitMembers$0 (Visitor_CompilationUnit.java:51)
at com.google.j2cl.common.visitor.ListVisitor.visit (ListVisitor.java:26)
at com.google.j2cl.transpiler.ast.Visitor_CompilationUnit.visitMembers (Visitor_CompilationUnit.java:49)
at com.google.j2cl.transpiler.ast.Visitor_CompilationUnit.visit (Visitor_CompilationUnit.java:19)
at com.google.j2cl.transpiler.ast.CompilationUnit.accept (CompilationUnit.java:93)
at com.google.j2cl.transpiler.passes.NormalizeForEachStatement.applyTo (NormalizeForEachStatement.java:53)
at com.google.j2cl.transpiler.passes.NormalizationPass$1.enterCompilationUnit (NormalizationPass.java:31)
at com.google.j2cl.transpiler.ast.AbstractVisitor.shouldProcessCompilationUnit (AbstractVisitor.java:62)
at com.google.j2cl.transpiler.ast.Visitor_CompilationUnit.visit (Visitor_CompilationUnit.java:17)
at com.google.j2cl.transpiler.ast.CompilationUnit.accept (CompilationUnit.java:93)
at com.google.j2cl.transpiler.passes.NormalizationPass.execute (NormalizationPass.java:41)
at com.google.j2cl.transpiler.J2clTranspiler.runPasses (J2clTranspiler.java:110)
at com.google.j2cl.transpiler.J2clTranspiler.desugarLibrary (J2clTranspiler.java:88)
at com.google.j2cl.transpiler.J2clTranspiler.transpileImpl (J2clTranspiler.java:80)
at com.google.j2cl.transpiler.J2clTranspiler.lambda$transpile$0 (J2clTranspiler.java:44)
at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:577)
at java.util.concurrent.FutureTask.run (FutureTask.java:317)
at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1144)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:642)
at java.lang.Thread.run (Thread.java:1589)
java.lang.RuntimeException
at com.vertispan.j2cl.build.DiskCache.markFailed(DiskCache.java:542)
at com.vertispan.j2cl.build.DiskCache$CacheResult.markFailure(DiskCache.java:62)
at com.vertispan.j2cl.build.TaskScheduler$2.executeTask(TaskScheduler.java:235)
at com.vertispan.j2cl.build.TaskScheduler$2.lambda$onReady$0(TaskScheduler.java:266)

treblereel Aug 11, 2023

@loveslikey let's discuss it https://matrix.to/#/#DominoKit_domino:gitter.im.

treblereel Aug 11, 2023

for (T val : value) {
BaseCollectionJsonDeserializer.this.deserializer.setBackReference(referenceName,reference,val,ctx);
}

Hmm, it was a j2cl bug, that has been fix long ago, as far as I remember, the workaround is to cast the value to an array of T.
looks like it's outdated version of domino-jackson
try this one https://mvnrepository.com/artifact/org.dominokit/domino-jackson/1.0.0

Answer selected by loveslikey

loveslikey Aug 11, 2023
Author

yeap! using domino-jackson version 1.0.0, it is working fine now. Thank you!

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Unable to Compile Maven Project with Guava and Gson using j2cl-maven-plugin #206

loveslikey Aug 11, 2023

Replies: 2 comments · 6 replies

gkdn Aug 11, 2023 Maintainer

treblereel Aug 11, 2023

treblereel Aug 11, 2023

loveslikey Aug 11, 2023 Author

treblereel Aug 11, 2023

treblereel Aug 11, 2023

loveslikey Aug 11, 2023 Author

loveslikey
Aug 11, 2023

Replies: 2 comments 6 replies

gkdn
Aug 11, 2023
Maintainer

treblereel
Aug 11, 2023

loveslikey Aug 11, 2023
Author

loveslikey Aug 11, 2023
Author