Incompatible with AWS SDK 1.11.36 (Null Pointer Exception)

A null pointer exception is being thrown by some dynamically generated queries. I believe the root cause of the problem is that the return types for some queries have changed. See the release notes below for details.

Compatibility with the latest version is required for the DynamoDBTypedConverted annotation fixes and updates.

Release Notes: https://aws.amazon.com/releasenotes/4268484867346012

java.lang.NullPointerException
    at com.amazonaws.services.dynamodbv2.datamodeling.StandardModelFactories.rulesOf(StandardModelFactories.java:146)
    at com.amazonaws.services.dynamodbv2.datamodeling.StandardModelFactories.access$100(StandardModelFactories.java:53)
    at com.amazonaws.services.dynamodbv2.datamodeling.StandardModelFactories$ConversionSchemaFactory.getModelFactory(StandardModelFactories.java:80)
    at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.getTableModel(DynamoDBMapper.java:392)
    at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.toParameters(DynamoDBMapper.java:1946)
    at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.toParameters(DynamoDBMapper.java:1935)
    at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.toParameters(DynamoDBMapper.java:1965)
    at com.amazonaws.services.dynamodbv2.datamodeling.PaginatedQueryList.<init>(PaginatedQueryList.java:66)
    at org.socialsignin.spring.data.dynamodb.core.DynamoDBTemplate.query(DynamoDBTemplate.java:191)
    at org.socialsignin.spring.data.dynamodb.query.MultipleEntityQueryRequestQuery.getResultList(MultipleEntityQueryRequestQuery.java:38)
    at org.socialsignin.spring.data.dynamodb.repository.query.AbstractDynamoDBQuery$CollectionExecution.execute(AbstractDynamoDBQuery.java:103)
    at org.socialsignin.spring.data.dynamodb.repository.query.AbstractDynamoDBQuery.execute(AbstractDynamoDBQuery.java:288)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:462)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:440)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:61)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
    at com.sun.proxy.$Proxy153.findBy<redacted>(Unknown Source)
    at com.<redacted>.api.repository.dynamo.<redacted>DynamoRepositoryTest.testFindBy<redacted>(<redacted>DynamoRepositoryTest.java:92)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:254)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:193)
    at org.junit.runners.Suite.runChild(Suite.java:128)
    at org.junit.runners.Suite.runChild(Suite.java:27)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:117)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:262)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:84)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)

[hb5fa]

I am using 5.0.2 with Spring-data-dynamodb and the following configuration seems to work around the NPE problem and provided good results:

First I annotated my bean accessor

@EnableDynamoDBRepositories(dynamoDBMapperConfigRef = “getDynamoDBMapperConfig”, basePackages = “my.company.base.package”)

I also setup an environment variable called ENV_PREFIX which is Spring wired via SpEL.

@Value("#{systemProperties['ENV_PREFIX']}")
private String envPrefix;

Then I setup a TableNameOverride bean:

@Bean
public DynamoDBMapperConfig.TableNameOverride getTableNameOverride() {
    return DynamoDBMapperConfig.TableNameOverride.withTableNamePrefix(envPrefix);
}

Finally, I setup the DynamoDBMapperConfig bean using TableNameOverride injection.

@Bean
public DynamoDBMapperConfig getDynamoDBMapperConfig(DynamoDBMapperConfig.TableNameOverride tableNameOverride) {
    DynamoDBMapperConfig.Builder builder = new DynamoDBMapperConfig.Builder();
    builder.setTableNameOverride(tableNameOverride);
    builder.setTypeConverterFactory(DynamoDBTypeConverterFactory.standard());
    return builder.build();
}

In hind sight, I could have setup a DynamoDBTypeConverterFactory bean that returns a standard DynamoDBTypeConverterFactory and inject that into the getDynamoDBMapperConfig() method using the DynamoDBMapperConfig builder. But this will also do the job.

[data1435]

When are you planning to release version 5.0.3?