Excluding DBRef field in a query causes a MappingException [DATAMONGO-805]

[spring-projects-issues]

Catherine Howe opened DATAMONGO-805 and commented

Excluding a field in a query where the field is a DBRef as below throws a MappingException.

Query query = new Query(Criteria.where("parentField").is("test"));
query.fields().exclude("children");

ParentClass parentClass = mongoOperations.findOne(query, ParentClass.class);

Exception trace:

org.springframework.data.mapping.model.MappingException: No mapping metadata found for class java.lang.Integer
    at org.springframework.data.mongodb.core.convert.MappingMongoConverter.createDBRef(MappingMongoConverter.java:729)
    at com.acme.….CollectionNameProvidedMongoConverter.createDBRef(CollectionNameProvidedMongoConverter.java:28)
    at org.springframework.data.mongodb.core.convert.MappingMongoConverter.toDBRef(MappingMongoConverter.java:288)
    at org.springframework.data.mongodb.core.convert.QueryMapper.convertAssociation(QueryMapper.java:273)
    at org.springframework.data.mongodb.core.convert.QueryMapper.getMappedValue(QueryMapper.java:204)
    at org.springframework.data.mongodb.core.convert.QueryMapper.getMappedObject(QueryMapper.java:113)
    at org.springframework.data.mongodb.core.MongoTemplate.doFindOne(MongoTemplate.java:1439)
    at org.springframework.data.mongodb.core.MongoTemplate.findOne(MongoTemplate.java:489)
    at org.springframework.data.mongodb.core.MongoTemplate.findOne(MongoTemplate.java:484)
    at ExcludeDBRefFieldTest.testExcludeChildren(ExcludeDBRefFieldTest.java:28)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

I've attached a simple test case that throws the MappingException. The workaround for this I can currently see is to use include for all the other fields instead.

---

Affects: 1.3.2 (Babbage SR1)

Attachments:

• ExcludeDBRefFieldTest.java (1.30 kB)

Backported to: 1.3.4 (Babbage SR3)

1 votes, 2 watchers

[spring-projects-issues]

Thomas Darimont commented

Added PR: https://github.com/spring-projects/spring-data-mongodb/pull/102

[spring-projects-issues]

Thomas Darimont commented

Please revise