Can't access binary key from Python client

Айсина Роза Мунеровна Tue, 20 Dec 2022 02:36:10 -0800

Hola!
I can’t get data by key in Python in caches created in Java with binary objects.


1. Cache was created though DDL in SQL API:

CREATE TABLE IF NOT EXISTS PUBLIC.ProductFeatures
(
     product_sku INT PRIMARY KEY,
     total_cnt_orders_with_sku INT
)
WITH "CACHE_NAME=PUBLIC_ProductFeatures,
     KEY_TYPE=io.sbmt.ProductFeaturesKey,
     VALUE_TYPE=io.sbmt.ProductFeaturesValue,
     AFFINITY_KEY=product_sku,
     TEMPLATE=PARTITIONED,
     BACKUPS=1”

2. Java apps uploads data to this cache through Key-Value API with binary 
object underneath:

ClientCache<BinaryObject, BinaryObject> igniteCache = igniteClient
     .cache(config.getCacheName())
     .withKeepBinary();

final BinaryObjectBuilder keyBuilder = 
igniteClient.binary().builder(config.getKeyType());
final BinaryObjectBuilder valueBuilder = 
igniteClient.binary().builder(config.getValueType());

keyBuilder.setField(column.name, id);
valueBuilder.setField(column.name, id);

final BinaryObject key = keyBuilder.build();
final BinaryObject value = valueBuilder.build();

igniteCache.put(key, value);


3. In Python client I create Complex Object class and try to get data from this 
cache:


class IoSbmtProductFeaturesKey(
    metaclass=GenericObjectMeta,
    schema={
        'product_sku': IntObject
    },
    type_name='io.sbmt.ProductFeaturesKey'
):
    pass


ignite_client.register_binary_type(IoSbmtProductFeaturesKey)

key = IoSbmtProductFeaturesKey(product_sku=15052004)
cache = ignite_client.get_cache("PUBLIC_ProductFeatures")
value = cache.get(key)

cursor = cache.scan(partitions=1)  # to check that key really exists
true_key, true_value = next(cursor)

What I see:

>>> true_key
IoSbmtProductFeaturesKey(product_sku=15052004, version=1)
>>> key
IoSbmtProductFeaturesKey(product_sku=15052004, version=1)
>>> true_key == key
True
>>> cache.get(true_key)
IoSbmtProductFeaturesValue(total_cnt_orders_with_sku=12, version=1)
>>> cache.get(true_key) == true_value
True
>>> cache.get(key)
>>> type(cache.get(key))
<class 'NoneType'>

So I can’t create Python analogue of Java binary class that is stored as key in 
the cache.
I tried also to change case in schema of python class, check all this on cache 
with composite key, to not specify type_id - nothing helps :(

Please help.


--

Роза Айсина

Старший разработчик ПО

СберМаркет | Доставка из любимых магазинов



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Can't access binary key from Python client

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