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From "James Baker (Jira)" <j...@apache.org>
Subject [jira] [Created] (JOHNZON-309) Yasson compliant Adapter fails with Johnzon
Date Fri, 27 Mar 2020 08:50:00 GMT
James Baker created JOHNZON-309:
-----------------------------------

             Summary: Yasson compliant Adapter fails with Johnzon
                 Key: JOHNZON-309
                 URL: https://issues.apache.org/jira/browse/JOHNZON-309
             Project: Johnzon
          Issue Type: Bug
          Components: JSON-B
    Affects Versions: 1.2.3
         Environment: Operating System: Ubuntu 18.04.04
Java: 11.0.4
            Reporter: James Baker


I have written a simple adapter to allow the serialization and deserialization of Java Path
objects. The adapter works fine using Yasson (which claims to be a reference implementation),
but both serialization and deserialization fail in Johnzon.

Serialization results in a StackOverflowError:
{noformat}
java.lang.StackOverflowError
 at org.apache.johnzon.core.JsonGeneratorImpl.currentState(JsonGeneratorImpl.java:676)
 at org.apache.johnzon.core.JsonGeneratorImpl.prepareValue(JsonGeneratorImpl.java:641)
 at org.apache.johnzon.core.JsonGeneratorImpl.writeStartArray(JsonGeneratorImpl.java:161)
 at org.apache.johnzon.mapper.MappingGeneratorImpl.doWriteIterable(MappingGeneratorImpl.java:682)
 at org.apache.johnzon.mapper.MappingGeneratorImpl.doWriteObject(MappingGeneratorImpl.java:156)
 at org.apache.johnzon.mapper.MappingGeneratorImpl.writeItem(MappingGeneratorImpl.java:672)
 at org.apache.johnzon.mapper.MappingGeneratorImpl.doWriteIterable(MappingGeneratorImpl.java:691)
 at org.apache.johnzon.mapper.MappingGeneratorImpl.doWriteObject(MappingGeneratorImpl.java:156)
 at org.apache.johnzon.mapper.MappingGeneratorImpl.writeItem(MappingGeneratorImpl.java:672)
 at org.apache.johnzon.mapper.MappingGeneratorImpl.doWriteIterable(MappingGeneratorImpl.java:691)
...{noformat}
Deserialization results in an IllegalArgumentException:

 
{noformat}
java.lang.IllegalArgumentException: Unsupported "/example/file.txt" for type interface java.nio.file.Path
at org.apache.johnzon.mapper.MappingParserImpl.readObject(MappingParserImpl.java:238)
 at org.apache.johnzon.mapper.MappingParserImpl.readObject(MappingParserImpl.java:139)
 at org.apache.johnzon.mapper.MappingParserImpl.readObject(MappingParserImpl.java:131)
 at org.apache.johnzon.mapper.Mapper.mapObject(Mapper.java:371)
 at org.apache.johnzon.mapper.Mapper.readObject(Mapper.java:297)
 at org.apache.johnzon.mapper.Mapper.readObject(Mapper.java:292)
 at org.apache.johnzon.jsonb.JohnzonJsonb.fromJson(JohnzonJsonb.java:77)
 at org.example.json.serialization.PathAdapterTest.testDeserialize(PathAdapterTest.java:25)
 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
 at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.base/java.lang.reflect.Method.invoke(Method.java:566)
 at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:686)
 at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
 at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
 at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)
 at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)
 at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)
 at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
 at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
 at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
 at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
 at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
 at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
 at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
 at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
 at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:212)
 at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
 at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:208)
 at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:137)
 at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:71)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135)
 at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
 at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
 at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
 at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
 at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
 at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
 at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
 at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
 at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
 at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
 at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
 at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
 at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
 at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
 at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
 at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
 at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
 at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:248)
 at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$5(DefaultLauncher.java:211)
 at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:226)
 at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:199)
 at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:132)
 at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:69)
 at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
 at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
 at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
{noformat}
 

The code is as follows:

*PathAdapter.java*
{code:java}
package org.example.json.serialization;

import javax.json.Json;
import javax.json.JsonString;
import javax.json.bind.adapter.JsonbAdapter;
import java.nio.file.Path;

public class PathAdapter implements JsonbAdapter<Path, JsonString> {
  @Override
  public JsonString adaptToJson(Path path) {
    return Json.createValue(path.toString());
  }

  @Override
  public Path adaptFromJson(JsonString jsonString) {
    return Path.of(jsonString.getString());
  }
}
{code}
*PathAdapterTest.java*
{code:java}
package org.example.json.serialization;

import org.junit.jupiter.api.Test;

import javax.json.bind.Jsonb;
import javax.json.bind.JsonbBuilder;
import javax.json.bind.JsonbConfig;
import java.nio.file.Path;

import static org.junit.jupiter.api.Assertions.assertEquals;

public class PathAdapterTest {
  private static final String PATH = "/example/file.txt";
  private static final Path P_PATH = Path.of(PATH);

  private static final Jsonb JSONB = JsonbBuilder.create(new JsonbConfig().withAdapters(new
PathAdapter()));

  @Test
  public void testSerialize(){
    assertEquals("\"" + PATH + "\"", JSONB.toJson(P_PATH));
  }

  @Test
  public void testDeserialize(){
    assertEquals(P_PATH, JSONB.fromJson("\"" + PATH + "\"", Path.class));
  }
}
{code}
*pom.xml*
{code:java}
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.example</groupId>
  <artifactId>jsonb-adapter-test</artifactId>
  <version>1.0-SNAPSHOT</version>

  <properties>
    <maven.compiler.source>11</maven.compiler.source>
    <maven.compiler.target>11</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>javax.json</groupId>
      <artifactId>javax.json-api</artifactId>
      <version>1.1.4</version>
    </dependency>
    <dependency>
      <groupId>javax.json.bind</groupId>
      <artifactId>javax.json.bind-api</artifactId>
      <version>1.0</version>
    </dependency>

    <dependency>
      <groupId>org.apache.johnzon</groupId>
      <artifactId>johnzon-jsonb</artifactId>
      <version>1.2.3</version>
    </dependency>

    <!--<dependency>
      <groupId>org.eclipse</groupId>
      <artifactId>yasson</artifactId>
      <version>1.0.6</version>
    </dependency>-->

    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-api</artifactId>
      <version>5.6.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

</project>
{code}



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