Existing v2 big-endian arrays cannot be read

[melissalinkert]

As a minimal test, I created a small v2 array using zarr-python (2.8.1):

import zarr
arr = zarr.open('v2-big-endian.zarr', mode='w', shape=(1, 1), chunks=(1, 1), dtype='>u2')
arr[:] = 65280

This can be re-opened by zarr-python, with the expected array contents of 65280. The created zarr is v2-big-endian.tar.gz.

If I then try to read the array with zarr-java 0.0.10:

$ cat Test.java 
import dev.zarr.zarrjava.store.FilesystemStore;
import dev.zarr.zarrjava.v2.Array;

public class Test {
  public static void main(String[] args) throws Exception {
    FilesystemStore store = new FilesystemStore(args[0]);
    Array arr = Array.open(store.resolve());
  }
}
$ java Test v2-big-endian.zarr/
Exception in thread "main" com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type `dev.zarr.zarrjava.v2.DataType` from String ">u2": not one of the values accepted for Enum class: [|i1, <i2, <i4, |u1, <u2, <f4, |b1, <f8, <u8, <u4, <i8]
 at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 13, column: 14] (through reference chain: dev.zarr.zarrjava.v2.ArrayMetadata["dtype"])
	at com.fasterxml.jackson.databind.exc.InvalidFormatException.from(InvalidFormatException.java:67)
	at com.fasterxml.jackson.databind.DeserializationContext.weirdStringException(DeserializationContext.java:2014)
	at com.fasterxml.jackson.databind.DeserializationContext.handleWeirdStringValue(DeserializationContext.java:1300)
	at com.fasterxml.jackson.databind.deser.std.EnumDeserializer._deserializeAltString(EnumDeserializer.java:454)
	at com.fasterxml.jackson.databind.deser.std.EnumDeserializer._fromString(EnumDeserializer.java:310)
	at com.fasterxml.jackson.databind.deser.std.EnumDeserializer.deserialize(EnumDeserializer.java:275)
	at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:553)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeWithErrorWrapping(BeanDeserializer.java:597)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeUsingPropertyBased(BeanDeserializer.java:440)
	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1499)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:340)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:177)
	at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:342)
	at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:5038)
	at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:4015)
	at dev.zarr.zarrjava.v2.Array.open(Array.java:54)
	at Test.main(Test.java:7)

Creating a test zarr that mimics real-world data with bioformats2raw 0.12.0-rc1 and trying to read that results in a similar error:

$ bin/bioformats2raw "test&pixelType=uint16&little=false.fake" v2-bioformats2raw.zarr
$ java Test v2-bioformats2raw.zarr/0/0
Exception in thread "main" com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type `dev.zarr.zarrjava.v2.DataType` from String ">u2": not one of the values accepted for Enum class: [|i1, <i2, <i4, |u1, <u2, <f4, |b1, <f8, <u8, <u4, <i8]
 at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 10, column: 13] (through reference chain: dev.zarr.zarrjava.v2.ArrayMetadata["dtype"])
	at com.fasterxml.jackson.databind.exc.InvalidFormatException.from(InvalidFormatException.java:67)
	at com.fasterxml.jackson.databind.DeserializationContext.weirdStringException(DeserializationContext.java:2014)
	at com.fasterxml.jackson.databind.DeserializationContext.handleWeirdStringValue(DeserializationContext.java:1300)
	at com.fasterxml.jackson.databind.deser.std.EnumDeserializer._deserializeAltString(EnumDeserializer.java:454)
	at com.fasterxml.jackson.databind.deser.std.EnumDeserializer._fromString(EnumDeserializer.java:310)
	at com.fasterxml.jackson.databind.deser.std.EnumDeserializer.deserialize(EnumDeserializer.java:275)
	at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:553)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeWithErrorWrapping(BeanDeserializer.java:597)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeUsingPropertyBased(BeanDeserializer.java:440)
	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1499)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:340)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:177)
	at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:342)
	at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:5038)
	at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:4015)
	at dev.zarr.zarrjava.v2.Array.open(Array.java:54)
	at Test.main(Test.java:7)

The generated test zarr is v2-bioformats2raw.tar.gz.