openapi-processor / openapi-processor/openapi-processor-spring

Support complex generic type response mapping procesing

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#150 3 comments 0 reactions 0 assignees View on GitHub

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enhancement
Dominant language
Kotlin
Stars
56
Forks
11
Avg merge
2d 4h
Merged PRs (30d)
8

Description

Hi @hauner!

Processing response mapping of generic types with depth 1 works fine:

FooToBar => java.util.Map<java.lang.String, java.lang.String>
FooToBar => java.util.Map<java.lang.String,  java.lang.List>

But it doesn't work with a complex generic types such as:

FooToBar => java.util.Map<java.lang.String, java.lang.List<java.lang.String>>

The output of processing:

line 1:64 no viable alternative at input 'java.util.Map<java.lang.String,java.lang.List<'
processing failed!
io.openapiprocessor.core.processor.mapping.v2.parser.antlr.MappingException: failed to parse mapping: FooToBar => java.util.Map<java.lang.String, java.lang.List<java.lang.String>>
	at io.openapiprocessor.core.processor.mapping.v2.parser.antlr.ParserKt.parseMapping(Parser.kt:27)
	at io.openapiprocessor.core.processor.mapping.v2.MappingConverter.convertType(MappingConverter.kt:91)
	at io.openapiprocessor.core.processor.mapping.v2.MappingConverter.convert(MappingConverter.kt:44)
	at io.openapiprocessor.core.processor.MappingConverter.convert(MappingConverter.kt:29)
	at io.openapiprocessor.core.converter.OptionsConverter.readMapping(OptionsConverter.kt:69)
	at io.openapiprocessor.core.converter.OptionsConverter.convertOptions(OptionsConverter.kt:34)
	at io.openapiprocessor.spring.processor.SpringProcessor.convertOptions(SpringProcessor.kt:116)
	at io.openapiprocessor.spring.processor.SpringProcessor.run(SpringProcessor.kt:45)
	at io.openapiprocessor.gradle.OpenApiProcessorWorker.run(OpenApiProcessorWorker.java:36)
	at io.openapiprocessor.gradle.OpenApiProcessorWorker.execute(OpenApiProcessorWorker.java:25)
	at org.gradle.workers.internal.DefaultWorkerServer.execute(DefaultWorkerServer.java:63)
	at org.gradle.workers.internal.AbstractClassLoaderWorker$1.create(AbstractClassLoaderWorker.java:49)
	at org.gradle.workers.internal.AbstractClassLoaderWorker$1.create(AbstractClassLoaderWorker.java:43)
	at org.gradle.internal.classloader.ClassLoaderUtils.executeInClassloader(ClassLoaderUtils.java:97)
	at org.gradle.workers.internal.AbstractClassLoaderWorker.executeInClassLoader(AbstractClassLoaderWorker.java:43)
	at org.gradle.workers.internal.IsolatedClassloaderWorker.run(IsolatedClassloaderWorker.java:49)
	at org.gradle.workers.internal.IsolatedClassloaderWorker.run(IsolatedClassloaderWorker.java:30)
	at org.gradle.workers.internal.IsolatedClassloaderWorkerFactory$1.lambda$execute$0(IsolatedClassloaderWorkerFactory.java:57)
	at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:44)
	at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:41)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)
	at org.gradle.workers.internal.AbstractWorker.executeWrappedInBuildOperation(AbstractWorker.java:41)
	at org.gradle.workers.internal.IsolatedClassloaderWorkerFactory$1.execute(IsolatedClassloaderWorkerFactory.java:49)
	at org.gradle.workers.internal.DefaultWorkerExecutor.lambda$submitWork$2(DefaultWorkerExecutor.java:205)
	at java.base@18.0.1.1/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runExecution(DefaultConditionalExecutionQueue.java:187)
	at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.access$700(DefaultConditionalExecutionQueue.java:120)
	at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner$1.run(DefaultConditionalExecutionQueue.java:162)
	at org.gradle.internal.Factories$1.create(Factories.java:31)
	at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:270)
	at org.gradle.internal.work.DefaultWorkerLeaseService.runAsWorkerThread(DefaultWorkerLeaseService.java:119)
	at org.gradle.internal.work.DefaultWorkerLeaseService.runAsWorkerThread(DefaultWorkerLeaseService.java:124)
	at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runBatch(DefaultConditionalExecutionQueue.java:157)
	at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.run(DefaultConditionalExecutionQueue.java:126)
	at java.base@18.0.1.1/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
	at java.base@18.0.1.1/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
	at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
	at java.base@18.0.1.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base@18.0.1.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base@18.0.1.1/java.lang.Thread.run(Thread.java:833)
Caused by: io.openapiprocessor.core.processor.mapping.v2.parser.antlr.MappingParserException: no viable alternative at input 'java.util.Map<java.lang.String,java.lang.List<'
	at io.openapiprocessor.core.processor.mapping.v2.parser.antlr.MappingErrorListener.syntaxError(MappingErrorListener.kt:22)
	at org.antlr.v4.runtime.ProxyErrorListener.syntaxError(ProxyErrorListener.java:41)
	at org.antlr.v4.runtime.Parser.notifyErrorListeners(Parser.java:544)
	at org.antlr.v4.runtime.DefaultErrorStrategy.reportNoViableAlternative(DefaultErrorStrategy.java:310)
	at org.antlr.v4.runtime.DefaultErrorStrategy.reportError(DefaultErrorStrategy.java:136)
	at io.openapiprocessor.core.processor.mapping.v2.parser.antlr.MappingParser.targetType(MappingParser.java:524)
	at io.openapiprocessor.core.processor.mapping.v2.parser.antlr.MappingParser.map(MappingParser.java:276)
	at io.openapiprocessor.core.processor.mapping.v2.parser.antlr.MappingParser.mapping(MappingParser.java:154)
	at io.openapiprocessor.core.processor.mapping.v2.parser.antlr.ParserKt.parseMapping(Parser.kt:22)
	... 47 more
Caused by: org.antlr.v4.runtime.NoViableAltException
	at org.antlr.v4.runtime.atn.ParserATNSimulator.noViableAlt(ParserATNSimulator.java:2031)
	at org.antlr.v4.runtime.atn.ParserATNSimulator.execATN(ParserATNSimulator.java:470)
	at org.antlr.v4.runtime.atn.ParserATNSimulator.adaptivePredict(ParserATNSimulator.java:396)
	at io.openapiprocessor.core.processor.mapping.v2.parser.antlr.MappingParser.targetType(MappingParser.java:510)
	... 50 more
Caused by: io.openapiprocessor.core.processor.mapping.v2.parser.antlr.MappingParserException: no viable alternative at input 'java.util.Map<java.lang.String,java.lang.List<'

Caused by: org.antlr.v4.runtime.NoViableAltException


Execution failed for task '...:processSpring'.
> A failure occurred while executing io.openapiprocessor.gradle.OpenApiProcessorWorker
   > failed to parse mapping: FooToBar => java.util.Map<java.lang.String, java.lang.List<java.lang.String>>

It would be useful to add complex generic types support.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the mapping parser reported in Parser.kt and MappingParser.targetType, then inspect MappingConverter.kt and MappingErrorListener.kt. Reproduce the documented mapping for Map<String, List> and trace the parser failure. Done means the nested generic mapping parses successfully without the reported processing error.

Written by the indexing model from the issue text.

Assessment

Tech stack
java, kotlin, spring-boot
Domain
tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
42/100

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