Чтение сгустка Кассандры из Ignite

Я пытаюсь прочитать содержимое таблицы Cassandra из Ignite (действует как кэш).
Таблица приведена ниже:

CREATE TABLE test.epc_table (
imsi text PRIMARY KEY,
data blob
)

Блок данных используется для хранения объекта класса C ++ (имя класса — «RtCassEpcTableDataVo»).

Я пытаюсь использовать следующую программу на С ++, чтобы передать значение «imsi» и получить соответствующие «данные».

#include "ignite/ignite.h"#include "ignite/ignition.h"

#include <iostream>
#include<string>

#include "RtCassEpcTableDataVo.hpp"
using namespace ignite;
using namespace cache;
using namespace std;

int main()
{
IgniteConfiguration cfg;

cfg.springCfgPath = "/home/ignite/apache-ignite-fabric-2.4.0-bin/config/cassandra-config.xml";

try
{
// Start a node.
Ignite ignite = Ignition::Start(cfg);
Cache<string,RtCassEpcTableDataVo> cache = ignite.GetCache<std::string, RtCassEpcTableDataVo>("cache1");

cout<<endl<<"Enter IMSI : ";
string l_imsi;
getline(cin>>ws,l_imsi);

RtCassEpcTableDataVo l_blob=cache.Get(l_imsi);
Ignition::StopAll(false);
}
catch (IgniteError& err)
{
std::cout << "An error occurred: " << err.GetText() << std::endl;

return err.GetCode();
}

std::cout << std::endl;

return 0;
}

Тем не менее, я получаю ошибки компиляции.

In file included from /usr/local/include/ignite/impl/binary/binary_writer_impl.h:32:0,
from /usr/local/include/ignite/binary/binary_raw_writer.h:30,
from /home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/cache/query/query_scan.h:29,
from /home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/impl/cache/cache_impl.h:21,
from /home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/impl/ignite_impl.h:27,
from /home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/ignite.h:26,
from sample.cpp:1:
/usr/local/include/ignite/impl/binary/binary_utils.h: In instantiation of âstatic T ignite::impl::binary::BinaryUtils::GetDefaultValue() [with T = RtCassEpcTableDataVo]â:
/home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/impl/operations.h:349:62:   required from âvoid ignite::impl::Out1Operation<T>::SetNull() [with T = RtCassEpcTableDataVo]â
sample.cpp:72:1:   required from here
/usr/local/include/ignite/impl/binary/binary_utils.h:475:59: error: âGetNullâ is not a member of âignite::binary::BinaryType<RtCassEpcTableDataVo>â
ignite::binary::BinaryType<T>::GetNull(res);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
In file included from /usr/local/include/ignite/impl/binary/binary_object_impl.h:31:0,
from /usr/local/include/ignite/impl/binary/binary_writer_impl.h:35,
from /usr/local/include/ignite/binary/binary_raw_writer.h:30,
from /home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/cache/query/query_scan.h:29,
from /home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/impl/cache/cache_impl.h:21,
from /home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/impl/ignite_impl.h:27,
from /home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/ignite.h:26,
from sample.cpp:1:
/usr/local/include/ignite/impl/binary/binary_reader_impl.h: In instantiation of âvoid ignite::impl::binary::BinaryReaderImpl::ReadTopObject0(T&) [with T = RtCassEpcTableDataVo]â:
/usr/local/include/ignite/impl/binary/binary_type_impl.h:100:17:   required from âstatic T ignite::binary::ReadHelper<T>::Read(R&) [with R = ignite::impl::binary::BinaryReaderImpl; T = RtCassEpcTableDataVo]â
/usr/local/include/ignite/impl/binary/binary_reader_impl.h:887:63:   required from âT ignite::impl::binary::BinaryReaderImpl::ReadTopObject() [with T = RtCassEpcTableDataVo]â
/home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/impl/operations.h:344:21:   required from âvoid ignite::impl::Out1Operation<T>::ProcessOutput(ignite::impl::binary::BinaryReaderImpl&) [with T = RtCassEpcTableDataVo]â
sample.cpp:72:1:   required from here
/usr/local/include/ignite/impl/binary/binary_reader_impl.h:1001:40: error: âReadâ is not a member of âBType {aka ignite::binary::BinaryType<RtCassEpcTableDataVo>}â
BType::Read(reader, res);
~~~~~~~~~~~^~~~~~~~~~~~~
/usr/local/include/ignite/impl/binary/binary_reader_impl.h: In instantiation of âT ignite::impl::binary::BinaryReaderImpl::GetNull() const [with T = RtCassEpcTableDataVo]â:
/usr/local/include/ignite/impl/binary/binary_reader_impl.h:905:45:   required from âvoid ignite::impl::binary::BinaryReaderImpl::ReadTopObject0(T&) [with T = RtCassEpcTableDataVo]â
/usr/local/include/ignite/impl/binary/binary_type_impl.h:100:17:   required from âstatic T ignite::binary::ReadHelper<T>::Read(R&) [with R = ignite::impl::binary::BinaryReaderImpl; T = RtCassEpcTableDataVo]â
/usr/local/include/ignite/impl/binary/binary_reader_impl.h:887:63:   required from âT ignite::impl::binary::BinaryReaderImpl::ReadTopObject() [with T = RtCassEpcTableDataVo]â
/home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/impl/operations.h:344:21:   required from âvoid ignite::impl::Out1Operation<T>::ProcessOutput(ignite::impl::binary::BinaryReaderImpl&) [with T = RtCassEpcTableDataVo]â
sample.cpp:72:1:   required from here
/usr/local/include/ignite/impl/binary/binary_reader_impl.h:1024:59: error: âGetNullâ is not a member of âignite::binary::BinaryType<RtCassEpcTableDataVo>â
ignite::binary::BinaryType<T>::GetNull(res);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
In file included from /usr/local/include/ignite/impl/binary/binary_writer_impl.h:30:0,
from /usr/local/include/ignite/binary/binary_raw_writer.h:30,
from /home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/cache/query/query_scan.h:29,
from /home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/impl/cache/cache_impl.h:21,
from /home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/impl/ignite_impl.h:27,
from /home/ignite/apache-ignite-fabric-2.4.0-bin/platforms/cpp/core/include/ignite/ignite.h:26,
from sample.cpp:1:
/usr/local/include/ignite/impl/binary/binary_id_resolver.h: In instantiation of âint32_t ignite::impl::binary::TemplatedBinaryIdResolver<T>::GetTypeId() [with T = RtCassEpcTableDataVo; int32_t = int]â:
sample.cpp:72:1:   required from here
/usr/local/include/ignite/impl/binary/binary_id_resolver.h:88:68: error: âGetTypeIdâ is not a member of âignite::binary::BinaryType<RtCassEpcTableDataVo>â
return ignite::binary::BinaryType<T>::GetTypeId();
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
/usr/local/include/ignite/impl/binary/binary_id_resolver.h: In instantiation of âint32_t ignite::impl::binary::TemplatedBinaryIdResolver<T>::GetFieldId(int32_t, const char*) [with T = RtCassEpcTableDataVo; int32_t = int]â:
sample.cpp:72:1:   required from here
/usr/local/include/ignite/impl/binary/binary_id_resolver.h:94:73: error: âGetFieldIdâ is not a member of âignite::binary::BinaryType<RtCassEpcTableDataVo>â
return ignite::binary::BinaryType<T>::GetFieldId(name);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~

Файл persistance-settings.xml выглядит следующим образом:

<persistence keyspace="test" table="epc_table">
<keyPersistence class="java.lang.String" strategy="PRIMITIVE" column="imsi"/>
<valuePersistence column="data" />
</persistence>

Я не понимаю, почему эта же программа работает (с некоторыми незначительными изменениями в cpp, а также в файле persistence-setting.xml), когда используется в какой-то другой таблице, т.е.

CREATE TABLE test.table2 (
imsi text PRIMARY KEY,
data int
)

В продолжение: Интеграция Apache Cassandra с Apache Ignite