bluehawk

Author: rustagir

examples/src/test/kotlin/KotlinXSerializationTest.kt

@@ -26,6 +26,7 @@ import org.bson.codecs.configuration.CodecRegistries
 import org.bson.codecs.kotlinx.BsonConfiguration
 import org.bson.codecs.kotlinx.BsonDecoder
 import org.bson.codecs.kotlinx.BsonEncoder
+import org.bson.codecs.kotlinx.BsonNamingStrategy
 import org.bson.codecs.kotlinx.KotlinSerializerCodec
 import org.bson.codecs.kotlinx.ObjectIdSerializer
 import org.bson.types.ObjectId
@@ -133,6 +134,34 @@ internal class KotlinXSerializationTest {
         collection.drop()
     }
 
+    @Test
+    fun snakeCaseNamingTest() = runBlocking {
+        @Serializable
+        data class PaintOrder(
+            val ManufacturerName: String,
+            val QuantityOfCans: Int,
+        )
+
+        val collection = database.getCollection<PaintOrder>("orders2")
+
+        // :snippet-start: snake-case-naming
+        val myCustomCodec = KotlinSerializerCodec.create<PaintOrder>(
+            bsonConfiguration = BsonConfiguration(bsonNamingStrategy = BsonNamingStrategy.SNAKE_CASE)
+        )
+
+        val registry = CodecRegistries.fromRegistries(
+            CodecRegistries.fromCodecs(myCustomCodec), collection.codecRegistry
+        )
+        // :snippet-end:
+
+        val paint = PaintOrder("Acme", 10)
+        collection.withCodecRegistry(registry).insertOne(paint)
+        val result = collection.withDocumentClass<Document>().find().first().toJson()
+        assertTrue(result.contains("quantity_of_cans"))
+        assertFalse(result.contains("ManufacturerName"))
+        collection.drop()
+    }
+
     // :snippet-start: kserializer
     object InstantAsBsonDateTime : KSerializer<Instant> {
         override val descriptor: SerialDescriptor = PrimitiveSerialDescriptor("InstantAsBsonDateTime", PrimitiveKind.LONG)

source/examples/generated/KotlinXSerializationTest.snippet.snake-case-serialization.kt renamed to source/examples/generated/KotlinXSerializationTest.snippet.snake-case-naming.kt

@@ -1,3 +1,7 @@
 val myCustomCodec = KotlinSerializerCodec.create<PaintOrder>(
     bsonConfiguration = BsonConfiguration(bsonNamingStrategy = BsonNamingStrategy.SNAKE_CASE)
 )
+
+val registry = CodecRegistries.fromRegistries(
+    CodecRegistries.fromCodecs(myCustomCodec), collection.codecRegistry
+)

source/fundamentals/data-formats/serialization.txt

@@ -256,7 +256,7 @@ fields into snake case by setting the ``bsonNamingStrategy`` parameter:
    import org.bson.codecs.kotlinx.BsonConfiguration
    import org.bson.codecs.kotlinx.BsonNamingStrategy
 
-.. literalinclude:: /examples/generated/KotlinXSerializationTest.snippet.snake-case-serialization.kt
+.. literalinclude:: /examples/generated/KotlinXSerializationTest.snippet.snake-case-naming.kt
    :language: kotlin
 
 .. note::