Can we compel Morphia to convert the ObjectId into its hexadecimal representation?

Currently, I am working on a Kotlin multi-project solution. One project defines data classes and an API to access a MongoDB where the ObjectId is automatically created. This particular project uses Morphia version 1.3.2. Entries are stored using the following function:

fun store(myClass: MyClass) = db.save(myClass).let { myClass.id?.toHexString() ?: "0" }

Now, I am integrating this project into a Spring Boot Kotlin project. I have developed a small webpage with filters that should be applied to my query successfully.

The results of my query are returned via my Rest-controller without any conversions. However, when attempting to print the ObjectId for each result on my webpage, it appears as an object instead of a String:

id:
  counter:15304909
  date:"2018-08-27T23:45:35.000+0000"
  machineIdentifier:123456
  processIdentifier:1234
  time:1535413535000
  timeSecond:1535413535
  timestamp:1535413535

I am wondering if there is a way to force Morphia to return the ObjectId in its String representation or enable correct mapping options. Alternatively, do I need to manually convert each object id to hexadecimal string representation? I am hopeful for a more efficient solution to this issue.

Additionally, I encountered difficulties when trying to remap the object to a valid ID due to a 

java.lang.IllegalArgumentException: Invalid character found in the request target. The valid characters are defined in RFC 7230 and RFC 3986
exception. The request appears as follows:

myClass?id={"timestamp":1535413631,"machineIdentifier":123456,"processIdentifier":1234,"counter":16576969,"time":1535413631000,"date":"2018-08-27T23:47:11.000+0000","timeSecond":1535413631}

At present, I am exploring various solutions to resolve this issue.

javascriptmongodbspring-bootkotlinmorphia

Answer №1

When working with a REST framework, it is important to have a serializer in place to properly convert the ObjectId to its String representation. This process typically becomes automated once the configuration is set up correctly, allowing you to focus on returning objects from your REST service while the framework handles serialization.

In my opinion, attempting to alter how the data is serialized in the database may not be necessary. The ObjectId serves as a reliable identifier and changing it could potentially create unnecessary complications.

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