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plurals

POMorphia mapping Generics
primarykey
Id
19978536
data
AcceptedAnswerId
0
AnswerCount
1
ClosedDate
CommentCount
3
CommunityOwnedDate
CreationDate
2013-11-14T13:11:39.060
FavoriteCount
0
LastActivityDate
2013-11-15T22:35:17.087
LastEditDate
2013-11-15T09:33:51.130
LastEditorUserId
980275
OwnerUserId
980275
ParentId
0
PostTypeId
1
Score
2
ViewCount
453
LastEditorDisplayName
text
Body
To simulate the behavior I see I wrote this test (gives the same exact error): <pre class="lang-java prettyprint-override"><code>@Test public void testListGenerics() { @Entity class BaseOne<T> { @Id ObjectId _id; T value; void setValue(T value) { this.value = value; } } class ListBase<ITEM> extends BaseOne<List<ITEM>> { } class ConcreteOne extends ListBase<String> {} ConcreteOne concreteOne = new ConcreteOne(); List<String> strings = Arrays.asList("Hello, ", "world"); concreteOne.setValue(strings); morphia.toDBObject(concreteOne); } </code></pre> When trying to map this I get: <blockquote> java.lang.NullPointerException at com.google.code.morphia.utils.ReflectionUtils.getParameterizedClass(ReflectionUtils.java:306) at com.google.code.morphia.utils.ReflectionUtils.getParameterizedClass(ReflectionUtils.java:302) at com.google.code.morphia.utils.ReflectionUtils.getParameterizedClass(ReflectionUtils.java:324) at com.google.code.morphia.utils.ReflectionUtils.getParameterizedClass(ReflectionUtils.java:302) at com.google.code.morphia.utils.ReflectionUtils.getParameterizedType(ReflectionUtils.java:281) at com.google.code.morphia.mapping.MappedField.discoverMultivalued(MappedField.java:136) at com.google.code.morphia.mapping.MappedField.discover(MappedField.java:96) at com.google.code.morphia.mapping.MappedField.(MappedField.java:76) at com.google.code.morphia.mapping.MappedClass.discover(MappedClass.java:197) at com.google.code.morphia.mapping.MappedClass.(MappedClass.java:119) at com.google.code.morphia.mapping.Mapper.getMappedClass(Mapper.java:225) at com.google.code.morphia.DatastoreImpl.getWriteConcern(DatastoreImpl.java:1346) at com.google.code.morphia.DatastoreImpl.save(DatastoreImpl.java:934) </blockquote> What can I do to make this work ?
Tags
<java><mongodb><generics><morphia>
Title
Morphia mapping Generics
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USTal G.
UserOwnerUserId
1. USTal G.
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 POMorphia mapping Generics
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
2. VO
 singulars
 PostPostId
 POMorphia mapping Generics
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId

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