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rocksdb/java/rocksjni/write_batch.cc

651 lines
22 KiB

// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
// This file implements the "bridge" between Java and C++ and enables
// calling c++ rocksdb::WriteBatch methods from Java side.
#include <memory>
#include "db/memtable.h"
#include "db/write_batch_internal.h"
#include "include/org_rocksdb_WriteBatch.h"
#include "include/org_rocksdb_WriteBatch_Handler.h"
#include "logging/logging.h"
#include "rocksdb/db.h"
#include "rocksdb/env.h"
#include "rocksdb/memtablerep.h"
#include "rocksdb/status.h"
#include "rocksdb/write_batch.h"
#include "rocksdb/write_buffer_manager.h"
#include "rocksjni/portal.h"
#include "rocksjni/writebatchhandlerjnicallback.h"
#include "table/scoped_arena_iterator.h"
/*
* Class: org_rocksdb_WriteBatch
* Method: newWriteBatch
* Signature: (I)J
*/
jlong Java_org_rocksdb_WriteBatch_newWriteBatch__I(JNIEnv* /*env*/,
jclass /*jcls*/,
jint jreserved_bytes) {
auto* wb = new rocksdb::WriteBatch(static_cast<size_t>(jreserved_bytes));
return reinterpret_cast<jlong>(wb);
}
/*
* Class: org_rocksdb_WriteBatch
* Method: newWriteBatch
* Signature: ([BI)J
*/
jlong Java_org_rocksdb_WriteBatch_newWriteBatch___3BI(JNIEnv* env,
jclass /*jcls*/,
jbyteArray jserialized,
jint jserialized_length) {
jboolean has_exception = JNI_FALSE;
std::string serialized = rocksdb::JniUtil::byteString<std::string>(
env, jserialized, jserialized_length,
[](const char* str, const size_t len) { return std::string(str, len); },
&has_exception);
if (has_exception == JNI_TRUE) {
// exception occurred
return 0;
}
auto* wb = new rocksdb::WriteBatch(serialized);
return reinterpret_cast<jlong>(wb);
}
/*
* Class: org_rocksdb_WriteBatch
* Method: count0
* Signature: (J)I
*/
jint Java_org_rocksdb_WriteBatch_count0(JNIEnv* /*env*/, jobject /*jobj*/,
jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
return static_cast<jint>(wb->Count());
}
/*
* Class: org_rocksdb_WriteBatch
* Method: clear0
* Signature: (J)V
*/
void Java_org_rocksdb_WriteBatch_clear0(JNIEnv* /*env*/, jobject /*jobj*/,
jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
wb->Clear();
}
/*
* Class: org_rocksdb_WriteBatch
* Method: setSavePoint0
* Signature: (J)V
*/
void Java_org_rocksdb_WriteBatch_setSavePoint0(JNIEnv* /*env*/,
jobject /*jobj*/,
jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
wb->SetSavePoint();
}
/*
* Class: org_rocksdb_WriteBatch
* Method: rollbackToSavePoint0
* Signature: (J)V
*/
void Java_org_rocksdb_WriteBatch_rollbackToSavePoint0(JNIEnv* env,
jobject /*jobj*/,
jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto s = wb->RollbackToSavePoint();
if (s.ok()) {
return;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
/*
* Class: org_rocksdb_WriteBatch
* Method: popSavePoint
* Signature: (J)V
*/
void Java_org_rocksdb_WriteBatch_popSavePoint(JNIEnv* env, jobject /*jobj*/,
jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto s = wb->PopSavePoint();
if (s.ok()) {
return;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
/*
* Class: org_rocksdb_WriteBatch
* Method: setMaxBytes
* Signature: (JJ)V
*/
void Java_org_rocksdb_WriteBatch_setMaxBytes(JNIEnv* /*env*/, jobject /*jobj*/,
jlong jwb_handle,
jlong jmax_bytes) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
wb->SetMaxBytes(static_cast<size_t>(jmax_bytes));
}
/*
* Class: org_rocksdb_WriteBatch
* Method: put
* Signature: (J[BI[BI)V
*/
void Java_org_rocksdb_WriteBatch_put__J_3BI_3BI(JNIEnv* env, jobject jobj,
jlong jwb_handle,
jbyteArray jkey, jint jkey_len,
jbyteArray jentry_value,
jint jentry_value_len) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto put = [&wb](rocksdb::Slice key, rocksdb::Slice value) {
return wb->Put(key, value);
};
std::unique_ptr<rocksdb::Status> status = rocksdb::JniUtil::kv_op(
put, env, jobj, jkey, jkey_len, jentry_value, jentry_value_len);
if (status != nullptr && !status->ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, status);
}
}
/*
* Class: org_rocksdb_WriteBatch
* Method: put
* Signature: (J[BI[BIJ)V
*/
void Java_org_rocksdb_WriteBatch_put__J_3BI_3BIJ(
JNIEnv* env, jobject jobj, jlong jwb_handle, jbyteArray jkey, jint jkey_len,
jbyteArray jentry_value, jint jentry_value_len, jlong jcf_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
assert(cf_handle != nullptr);
auto put = [&wb, &cf_handle](rocksdb::Slice key, rocksdb::Slice value) {
return wb->Put(cf_handle, key, value);
};
std::unique_ptr<rocksdb::Status> status = rocksdb::JniUtil::kv_op(
put, env, jobj, jkey, jkey_len, jentry_value, jentry_value_len);
if (status != nullptr && !status->ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, status);
}
}
/*
* Class: org_rocksdb_WriteBatch
* Method: putDirect
* Signature: (JLjava/nio/ByteBuffer;IILjava/nio/ByteBuffer;IIJ)V
*/
void Java_org_rocksdb_WriteBatch_putDirect(JNIEnv* env, jobject /*jobj*/,
jlong jwb_handle, jobject jkey,
jint jkey_offset, jint jkey_len,
jobject jval, jint jval_offset,
jint jval_len, jlong jcf_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
auto put = [&wb, &cf_handle](rocksdb::Slice& key, rocksdb::Slice& value) {
if (cf_handle == nullptr) {
wb->Put(key, value);
} else {
wb->Put(cf_handle, key, value);
}
};
rocksdb::JniUtil::kv_op_direct(put, env, jkey, jkey_offset, jkey_len, jval,
jval_offset, jval_len);
}
/*
* Class: org_rocksdb_WriteBatch
* Method: merge
* Signature: (J[BI[BI)V
*/
void Java_org_rocksdb_WriteBatch_merge__J_3BI_3BI(
JNIEnv* env, jobject jobj, jlong jwb_handle, jbyteArray jkey, jint jkey_len,
jbyteArray jentry_value, jint jentry_value_len) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto merge = [&wb](rocksdb::Slice key, rocksdb::Slice value) {
return wb->Merge(key, value);
};
std::unique_ptr<rocksdb::Status> status = rocksdb::JniUtil::kv_op(
merge, env, jobj, jkey, jkey_len, jentry_value, jentry_value_len);
if (status != nullptr && !status->ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, status);
}
}
/*
* Class: org_rocksdb_WriteBatch
* Method: merge
* Signature: (J[BI[BIJ)V
*/
void Java_org_rocksdb_WriteBatch_merge__J_3BI_3BIJ(
JNIEnv* env, jobject jobj, jlong jwb_handle, jbyteArray jkey, jint jkey_len,
jbyteArray jentry_value, jint jentry_value_len, jlong jcf_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
assert(cf_handle != nullptr);
auto merge = [&wb, &cf_handle](rocksdb::Slice key, rocksdb::Slice value) {
return wb->Merge(cf_handle, key, value);
};
std::unique_ptr<rocksdb::Status> status = rocksdb::JniUtil::kv_op(
merge, env, jobj, jkey, jkey_len, jentry_value, jentry_value_len);
if (status != nullptr && !status->ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, status);
}
}
/*
* Class: org_rocksdb_WriteBatch
* Method: delete
* Signature: (J[BI)V
*/
void Java_org_rocksdb_WriteBatch_delete__J_3BI(JNIEnv* env, jobject jobj,
jlong jwb_handle,
jbyteArray jkey, jint jkey_len) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto remove = [&wb](rocksdb::Slice key) { return wb->Delete(key); };
std::unique_ptr<rocksdb::Status> status =
rocksdb::JniUtil::k_op(remove, env, jobj, jkey, jkey_len);
if (status != nullptr && !status->ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, status);
}
}
/*
* Class: org_rocksdb_WriteBatch
* Method: delete
* Signature: (J[BIJ)V
*/
void Java_org_rocksdb_WriteBatch_delete__J_3BIJ(JNIEnv* env, jobject jobj,
jlong jwb_handle,
jbyteArray jkey, jint jkey_len,
jlong jcf_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
assert(cf_handle != nullptr);
auto remove = [&wb, &cf_handle](rocksdb::Slice key) {
return wb->Delete(cf_handle, key);
};
std::unique_ptr<rocksdb::Status> status =
rocksdb::JniUtil::k_op(remove, env, jobj, jkey, jkey_len);
if (status != nullptr && !status->ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, status);
}
}
/*
* Class: org_rocksdb_WriteBatch
* Method: singleDelete
* Signature: (J[BI)V
*/
void Java_org_rocksdb_WriteBatch_singleDelete__J_3BI(JNIEnv* env, jobject jobj,
jlong jwb_handle,
jbyteArray jkey,
jint jkey_len) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto single_delete = [&wb](rocksdb::Slice key) {
return wb->SingleDelete(key);
};
std::unique_ptr<rocksdb::Status> status =
rocksdb::JniUtil::k_op(single_delete, env, jobj, jkey, jkey_len);
if (status != nullptr && !status->ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, status);
}
}
/*
* Class: org_rocksdb_WriteBatch
* Method: singleDelete
* Signature: (J[BIJ)V
*/
void Java_org_rocksdb_WriteBatch_singleDelete__J_3BIJ(JNIEnv* env, jobject jobj,
jlong jwb_handle,
jbyteArray jkey,
jint jkey_len,
jlong jcf_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
assert(cf_handle != nullptr);
auto single_delete = [&wb, &cf_handle](rocksdb::Slice key) {
return wb->SingleDelete(cf_handle, key);
};
std::unique_ptr<rocksdb::Status> status =
rocksdb::JniUtil::k_op(single_delete, env, jobj, jkey, jkey_len);
if (status != nullptr && !status->ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, status);
}
}
/*
* Class: org_rocksdb_WriteBatch
* Method: removeDirect
* Signature: (JLjava/nio/ByteBuffer;IIJ)V
*/
void Java_org_rocksdb_WriteBatch_removeDirect(JNIEnv* env, jobject /*jobj*/,
jlong jwb_handle, jobject jkey,
jint jkey_offset, jint jkey_len,
jlong jcf_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
auto remove = [&wb, &cf_handle](rocksdb::Slice& key) {
if (cf_handle == nullptr) {
wb->Delete(key);
} else {
wb->Delete(cf_handle, key);
}
};
rocksdb::JniUtil::k_op_direct(remove, env, jkey, jkey_offset, jkey_len);
}
/*
* Class: org_rocksdb_WriteBatch
* Method: deleteRange
* Signature: (J[BI[BI)V
*/
void Java_org_rocksdb_WriteBatch_deleteRange__J_3BI_3BI(
JNIEnv* env, jobject jobj, jlong jwb_handle, jbyteArray jbegin_key,
jint jbegin_key_len, jbyteArray jend_key, jint jend_key_len) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto deleteRange = [&wb](rocksdb::Slice beginKey, rocksdb::Slice endKey) {
return wb->DeleteRange(beginKey, endKey);
};
std::unique_ptr<rocksdb::Status> status =
rocksdb::JniUtil::kv_op(deleteRange, env, jobj, jbegin_key,
jbegin_key_len, jend_key, jend_key_len);
if (status != nullptr && !status->ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, status);
}
}
/*
* Class: org_rocksdb_WriteBatch
* Method: deleteRange
* Signature: (J[BI[BIJ)V
*/
void Java_org_rocksdb_WriteBatch_deleteRange__J_3BI_3BIJ(
JNIEnv* env, jobject jobj, jlong jwb_handle, jbyteArray jbegin_key,
jint jbegin_key_len, jbyteArray jend_key, jint jend_key_len,
jlong jcf_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
assert(cf_handle != nullptr);
auto deleteRange = [&wb, &cf_handle](rocksdb::Slice beginKey,
rocksdb::Slice endKey) {
return wb->DeleteRange(cf_handle, beginKey, endKey);
};
std::unique_ptr<rocksdb::Status> status =
rocksdb::JniUtil::kv_op(deleteRange, env, jobj, jbegin_key,
jbegin_key_len, jend_key, jend_key_len);
if (status != nullptr && !status->ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, status);
}
}
/*
* Class: org_rocksdb_WriteBatch
* Method: putLogData
* Signature: (J[BI)V
*/
void Java_org_rocksdb_WriteBatch_putLogData(JNIEnv* env, jobject jobj,
jlong jwb_handle, jbyteArray jblob,
jint jblob_len) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto putLogData = [&wb](rocksdb::Slice blob) { return wb->PutLogData(blob); };
std::unique_ptr<rocksdb::Status> status =
rocksdb::JniUtil::k_op(putLogData, env, jobj, jblob, jblob_len);
if (status != nullptr && !status->ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, status);
}
}
/*
* Class: org_rocksdb_WriteBatch
* Method: iterate
* Signature: (JJ)V
*/
void Java_org_rocksdb_WriteBatch_iterate(JNIEnv* env, jobject /*jobj*/,
jlong jwb_handle,
jlong handlerHandle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
rocksdb::Status s = wb->Iterate(
reinterpret_cast<rocksdb::WriteBatchHandlerJniCallback*>(handlerHandle));
if (s.ok()) {
return;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
/*
* Class: org_rocksdb_WriteBatch
* Method: data
* Signature: (J)[B
*/
jbyteArray Java_org_rocksdb_WriteBatch_data(JNIEnv* env, jobject /*jobj*/,
jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto data = wb->Data();
return rocksdb::JniUtil::copyBytes(env, data);
}
/*
* Class: org_rocksdb_WriteBatch
* Method: getDataSize
* Signature: (J)J
*/
jlong Java_org_rocksdb_WriteBatch_getDataSize(JNIEnv* /*env*/, jobject /*jobj*/,
jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto data_size = wb->GetDataSize();
return static_cast<jlong>(data_size);
}
/*
* Class: org_rocksdb_WriteBatch
* Method: hasPut
* Signature: (J)Z
*/
jboolean Java_org_rocksdb_WriteBatch_hasPut(JNIEnv* /*env*/, jobject /*jobj*/,
jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
return wb->HasPut();
}
/*
* Class: org_rocksdb_WriteBatch
* Method: hasDelete
* Signature: (J)Z
*/
jboolean Java_org_rocksdb_WriteBatch_hasDelete(JNIEnv* /*env*/,
jobject /*jobj*/,
jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
return wb->HasDelete();
}
/*
* Class: org_rocksdb_WriteBatch
* Method: hasSingleDelete
* Signature: (J)Z
*/
JNIEXPORT jboolean JNICALL Java_org_rocksdb_WriteBatch_hasSingleDelete(
JNIEnv* /*env*/, jobject /*jobj*/, jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
return wb->HasSingleDelete();
}
/*
* Class: org_rocksdb_WriteBatch
* Method: hasDeleteRange
* Signature: (J)Z
*/
JNIEXPORT jboolean JNICALL Java_org_rocksdb_WriteBatch_hasDeleteRange(
JNIEnv* /*env*/, jobject /*jobj*/, jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
return wb->HasDeleteRange();
}
/*
* Class: org_rocksdb_WriteBatch
* Method: hasMerge
* Signature: (J)Z
*/
JNIEXPORT jboolean JNICALL Java_org_rocksdb_WriteBatch_hasMerge(
JNIEnv* /*env*/, jobject /*jobj*/, jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
return wb->HasMerge();
}
/*
* Class: org_rocksdb_WriteBatch
* Method: hasBeginPrepare
* Signature: (J)Z
*/
JNIEXPORT jboolean JNICALL Java_org_rocksdb_WriteBatch_hasBeginPrepare(
JNIEnv* /*env*/, jobject /*jobj*/, jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
return wb->HasBeginPrepare();
}
/*
* Class: org_rocksdb_WriteBatch
* Method: hasEndPrepare
* Signature: (J)Z
*/
JNIEXPORT jboolean JNICALL Java_org_rocksdb_WriteBatch_hasEndPrepare(
JNIEnv* /*env*/, jobject /*jobj*/, jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
return wb->HasEndPrepare();
}
/*
* Class: org_rocksdb_WriteBatch
* Method: hasCommit
* Signature: (J)Z
*/
JNIEXPORT jboolean JNICALL Java_org_rocksdb_WriteBatch_hasCommit(
JNIEnv* /*env*/, jobject /*jobj*/, jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
return wb->HasCommit();
}
/*
* Class: org_rocksdb_WriteBatch
* Method: hasRollback
* Signature: (J)Z
*/
JNIEXPORT jboolean JNICALL Java_org_rocksdb_WriteBatch_hasRollback(
JNIEnv* /*env*/, jobject /*jobj*/, jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
return wb->HasRollback();
}
/*
* Class: org_rocksdb_WriteBatch
* Method: markWalTerminationPoint
* Signature: (J)V
*/
void Java_org_rocksdb_WriteBatch_markWalTerminationPoint(JNIEnv* /*env*/,
jobject /*jobj*/,
jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
wb->MarkWalTerminationPoint();
}
/*
* Class: org_rocksdb_WriteBatch
* Method: getWalTerminationPoint
* Signature: (J)Lorg/rocksdb/WriteBatch/SavePoint;
*/
jobject Java_org_rocksdb_WriteBatch_getWalTerminationPoint(JNIEnv* env,
jobject /*jobj*/,
jlong jwb_handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
assert(wb != nullptr);
auto save_point = wb->GetWalTerminationPoint();
return rocksdb::WriteBatchSavePointJni::construct(env, save_point);
}
/*
* Class: org_rocksdb_WriteBatch
* Method: disposeInternal
* Signature: (J)V
*/
void Java_org_rocksdb_WriteBatch_disposeInternal(JNIEnv* /*env*/,
jobject /*jobj*/,
jlong handle) {
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(handle);
assert(wb != nullptr);
delete wb;
}
/*
* Class: org_rocksdb_WriteBatch_Handler
* Method: createNewHandler0
* Signature: ()J
*/
jlong Java_org_rocksdb_WriteBatch_00024Handler_createNewHandler0(JNIEnv* env,
jobject jobj) {
auto* wbjnic = new rocksdb::WriteBatchHandlerJniCallback(env, jobj);
return reinterpret_cast<jlong>(wbjnic);
}