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

[loveslikey]

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!

[gkdn]

@niloc132

[treblereel]

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

[treblereel]

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]

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]

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

[treblereel]

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

[loveslikey]

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