Updated Video.java and VideoRepository to use String for Id. #40
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MongoDB's auto generated ObjectId consists of alphanumeric characters and hyphens '-'. When a long is used as the datatype for the Id, Spring Data MongoDB will issue an update/overwrite a single document in MongoDB with '_Id': NumberLong(0).
Output from mongo shell (Id as long):
db.video.find().pretty()
{
"_id" : NumberLong(0),
"_class" : "org.magnum.mobilecloud.video.repository.Video",
"name" : "Video-3a3b3158-9517-48c4-bdbd-718374e296bd",
"url" : "http://coursera.org/some/video-3a3b3158-9517-48c4-bdbd-718374e296bd",
"duration" : NumberLong(2880000)
}
This differs from the desired outcome which is to create a new (additional) document on subsequent calls to src / test / java / org / magnum / mobilecloud / integration / test / VideoSvcClientApiTest.java
Output from mongo shell (Id as String in 2nd document):
db.video.find().pretty()
{
"_id" : NumberLong(0),
"_class" : "org.magnum.mobilecloud.video.repository.Video",
"name" : "Video-3a3b3158-9517-48c4-bdbd-718374e296bd",
"url" : "http://coursera.org/some/video-3a3b3158-9517-48c4-bdbd-718374e296bd",
"duration" : NumberLong(2880000)
}
{
"_id" : ObjectId("545cba6444ae69b880ba589b"),
"_class" : "org.magnum.mobilecloud.video.repository.Video",
"name" : "Video-a820232d-dca3-4754-8962-f5355e408d61",
"url" : "http://coursera.org/some/video-a820232d-dca3-4754-8962-f5355e408d61",
"duration" : NumberLong(60000)
}
Updated VideoRepository.java to extend MongoRepository<Video, String> instead of MongoRepository<Video, Long>. This is in line with change to Id as String insteaf og long.
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'Id' needs to be String in order for Spring Data JPA to correctly assign an allow MongoDB to automatically generate an ObjectId('...') and return to Spring Data JPA.