Hi there
I am attempting to change a legacy monolith application which uses java
serialisation as it’s persistence mechanism to use ArangoDB.
I’m encountering a problem when persisting objects which contain other
objects because this results in the following exception:
VPackValueTypeException: Expecting type OBJECT`
I’m using Arango’s Java Driver as opposed to Arango’s spring data.
I have tried using Arango’s default serialization as well as writing my own
serializer, alongside this I have also tried using Jackson as the
serializer.
Below is an example of one of my serializers.
public class ArangoDbChunkSerializer extends ArangoDbSerializerDeserializer
implements VPackSerializer<Chunk>
{
protected static final String CHUNK_NAME = "chunk";
protected static final String CHUNK_SIZE = "chunkSize";
protected static final String ITEMS = "items";
@Override
public void serialize(VPackBuilder builder, String attribute, Chunk value,
VPackSerializationContext context)
throws VPackException
{
builder.add(attribute, ValueType.OBJECT, false);
builder.add(SERIALIZABLE_CLASS_NAME, value.getSerializableClassName());
builder.add(CHUNK_SIZE, value.getChunkSize());
VPack vPack = new VPack.Builder()
.registerSerializer(Row.class, new ArangoDbRowSerializer())
.build();
VPackSlice vPackSlice = vPack.serialize(value.getItems());
builder.add(vPackSlice);
builder.close();
}
}
The exception occurs inside
builder.close();
Any help would be awesome - thanks for reading this : )
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