1 files changed, 676 insertions, 0 deletions
diff --git a/src/rocksdb/java/rocksjni/write_batch.cc b/src/rocksdb/java/rocksjni/write_batch.cc
new file mode 100644
index 000000000..6704e4a7e
--- /dev/null
+++ b/src/rocksdb/java/rocksjni/write_batch.cc
@@ -0,0 +1,676 @@
+// 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_NAMESPACE::WriteBatch methods from Java side.
+#include "rocksdb/write_batch.h"
+
+#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_buffer_manager.h"
+#include "rocksjni/cplusplus_to_java_convert.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_NAMESPACE::WriteBatch(static_cast<size_t>(jreserved_bytes));
+  return GET_CPLUSPLUS_POINTER(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_NAMESPACE::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_NAMESPACE::WriteBatch(serialized);
+  return GET_CPLUSPLUS_POINTER(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_NAMESPACE::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_NAMESPACE::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_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+
+  auto s = wb->RollbackToSavePoint();
+
+  if (s.ok()) {
+    return;
+  }
+  ROCKSDB_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+
+  auto s = wb->PopSavePoint();
+
+  if (s.ok()) {
+    return;
+  }
+  ROCKSDB_NAMESPACE::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_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+  auto put = [&wb](ROCKSDB_NAMESPACE::Slice key,
+                   ROCKSDB_NAMESPACE::Slice value) {
+    return wb->Put(key, value);
+  };
+  std::unique_ptr<ROCKSDB_NAMESPACE::Status> status =
+      ROCKSDB_NAMESPACE::JniUtil::kv_op(put, env, jobj, jkey, jkey_len,
+                                        jentry_value, jentry_value_len);
+  if (status != nullptr && !status->ok()) {
+    ROCKSDB_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+  auto* cf_handle =
+      reinterpret_cast<ROCKSDB_NAMESPACE::ColumnFamilyHandle*>(jcf_handle);
+  assert(cf_handle != nullptr);
+  auto put = [&wb, &cf_handle](ROCKSDB_NAMESPACE::Slice key,
+                               ROCKSDB_NAMESPACE::Slice value) {
+    return wb->Put(cf_handle, key, value);
+  };
+  std::unique_ptr<ROCKSDB_NAMESPACE::Status> status =
+      ROCKSDB_NAMESPACE::JniUtil::kv_op(put, env, jobj, jkey, jkey_len,
+                                        jentry_value, jentry_value_len);
+  if (status != nullptr && !status->ok()) {
+    ROCKSDB_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+  auto* cf_handle =
+      reinterpret_cast<ROCKSDB_NAMESPACE::ColumnFamilyHandle*>(jcf_handle);
+  auto put = [&wb, &cf_handle](ROCKSDB_NAMESPACE::Slice& key,
+                               ROCKSDB_NAMESPACE::Slice& value) {
+    if (cf_handle == nullptr) {
+      wb->Put(key, value);
+    } else {
+      wb->Put(cf_handle, key, value);
+    }
+  };
+  ROCKSDB_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+  auto merge = [&wb](ROCKSDB_NAMESPACE::Slice key,
+                     ROCKSDB_NAMESPACE::Slice value) {
+    return wb->Merge(key, value);
+  };
+  std::unique_ptr<ROCKSDB_NAMESPACE::Status> status =
+      ROCKSDB_NAMESPACE::JniUtil::kv_op(merge, env, jobj, jkey, jkey_len,
+                                        jentry_value, jentry_value_len);
+  if (status != nullptr && !status->ok()) {
+    ROCKSDB_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+  auto* cf_handle =
+      reinterpret_cast<ROCKSDB_NAMESPACE::ColumnFamilyHandle*>(jcf_handle);
+  assert(cf_handle != nullptr);
+  auto merge = [&wb, &cf_handle](ROCKSDB_NAMESPACE::Slice key,
+                                 ROCKSDB_NAMESPACE::Slice value) {
+    return wb->Merge(cf_handle, key, value);
+  };
+  std::unique_ptr<ROCKSDB_NAMESPACE::Status> status =
+      ROCKSDB_NAMESPACE::JniUtil::kv_op(merge, env, jobj, jkey, jkey_len,
+                                        jentry_value, jentry_value_len);
+  if (status != nullptr && !status->ok()) {
+    ROCKSDB_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+  auto remove = [&wb](ROCKSDB_NAMESPACE::Slice key) { return wb->Delete(key); };
+  std::unique_ptr<ROCKSDB_NAMESPACE::Status> status =
+      ROCKSDB_NAMESPACE::JniUtil::k_op(remove, env, jobj, jkey, jkey_len);
+  if (status != nullptr && !status->ok()) {
+    ROCKSDB_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+  auto* cf_handle =
+      reinterpret_cast<ROCKSDB_NAMESPACE::ColumnFamilyHandle*>(jcf_handle);
+  assert(cf_handle != nullptr);
+  auto remove = [&wb, &cf_handle](ROCKSDB_NAMESPACE::Slice key) {
+    return wb->Delete(cf_handle, key);
+  };
+  std::unique_ptr<ROCKSDB_NAMESPACE::Status> status =
+      ROCKSDB_NAMESPACE::JniUtil::k_op(remove, env, jobj, jkey, jkey_len);
+  if (status != nullptr && !status->ok()) {
+    ROCKSDB_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+  auto single_delete = [&wb](ROCKSDB_NAMESPACE::Slice key) {
+    return wb->SingleDelete(key);
+  };
+  std::unique_ptr<ROCKSDB_NAMESPACE::Status> status =
+      ROCKSDB_NAMESPACE::JniUtil::k_op(single_delete, env, jobj, jkey,
+                                       jkey_len);
+  if (status != nullptr && !status->ok()) {
+    ROCKSDB_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+  auto* cf_handle =
+      reinterpret_cast<ROCKSDB_NAMESPACE::ColumnFamilyHandle*>(jcf_handle);
+  assert(cf_handle != nullptr);
+  auto single_delete = [&wb, &cf_handle](ROCKSDB_NAMESPACE::Slice key) {
+    return wb->SingleDelete(cf_handle, key);
+  };
+  std::unique_ptr<ROCKSDB_NAMESPACE::Status> status =
+      ROCKSDB_NAMESPACE::JniUtil::k_op(single_delete, env, jobj, jkey,
+                                       jkey_len);
+  if (status != nullptr && !status->ok()) {
+    ROCKSDB_NAMESPACE::RocksDBExceptionJni::ThrowNew(env, status);
+  }
+}
+
+/*
+ * Class:     org_rocksdb_WriteBatch
+ * Method:    deleteDirect
+ * Signature: (JLjava/nio/ByteBuffer;IIJ)V
+ */
+void Java_org_rocksdb_WriteBatch_deleteDirect(JNIEnv* env, jobject /*jobj*/,
+                                              jlong jwb_handle, jobject jkey,
+                                              jint jkey_offset, jint jkey_len,
+                                              jlong jcf_handle) {
+  auto* wb = reinterpret_cast<ROCKSDB_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+  auto* cf_handle =
+      reinterpret_cast<ROCKSDB_NAMESPACE::ColumnFamilyHandle*>(jcf_handle);
+  auto remove = [&wb, &cf_handle](ROCKSDB_NAMESPACE::Slice& key) {
+    if (cf_handle == nullptr) {
+      wb->Delete(key);
+    } else {
+      wb->Delete(cf_handle, key);
+    }
+  };
+  ROCKSDB_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+  auto deleteRange = [&wb](ROCKSDB_NAMESPACE::Slice beginKey,
+                           ROCKSDB_NAMESPACE::Slice endKey) {
+    return wb->DeleteRange(beginKey, endKey);
+  };
+  std::unique_ptr<ROCKSDB_NAMESPACE::Status> status =
+      ROCKSDB_NAMESPACE::JniUtil::kv_op(deleteRange, env, jobj, jbegin_key,
+                                        jbegin_key_len, jend_key, jend_key_len);
+  if (status != nullptr && !status->ok()) {
+    ROCKSDB_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+  auto* cf_handle =
+      reinterpret_cast<ROCKSDB_NAMESPACE::ColumnFamilyHandle*>(jcf_handle);
+  assert(cf_handle != nullptr);
+  auto deleteRange = [&wb, &cf_handle](ROCKSDB_NAMESPACE::Slice beginKey,
+                                       ROCKSDB_NAMESPACE::Slice endKey) {
+    return wb->DeleteRange(cf_handle, beginKey, endKey);
+  };
+  std::unique_ptr<ROCKSDB_NAMESPACE::Status> status =
+      ROCKSDB_NAMESPACE::JniUtil::kv_op(deleteRange, env, jobj, jbegin_key,
+                                        jbegin_key_len, jend_key, jend_key_len);
+  if (status != nullptr && !status->ok()) {
+    ROCKSDB_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+  auto putLogData = [&wb](ROCKSDB_NAMESPACE::Slice blob) {
+    return wb->PutLogData(blob);
+  };
+  std::unique_ptr<ROCKSDB_NAMESPACE::Status> status =
+      ROCKSDB_NAMESPACE::JniUtil::k_op(putLogData, env, jobj, jblob, jblob_len);
+  if (status != nullptr && !status->ok()) {
+    ROCKSDB_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+
+  ROCKSDB_NAMESPACE::Status s = wb->Iterate(
+      reinterpret_cast<ROCKSDB_NAMESPACE::WriteBatchHandlerJniCallback*>(
+          handlerHandle));
+
+  if (s.ok()) {
+    return;
+  }
+  ROCKSDB_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+
+  auto data = wb->Data();
+  return ROCKSDB_NAMESPACE::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_NAMESPACE::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_NAMESPACE::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_NAMESPACE::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_NAMESPACE::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_NAMESPACE::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_NAMESPACE::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_NAMESPACE::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_NAMESPACE::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_NAMESPACE::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_NAMESPACE::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_NAMESPACE::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_NAMESPACE::WriteBatch*>(jwb_handle);
+  assert(wb != nullptr);
+
+  auto save_point = wb->GetWalTerminationPoint();
+  return ROCKSDB_NAMESPACE::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_NAMESPACE::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_NAMESPACE::WriteBatchHandlerJniCallback(env, jobj);
+  return GET_CPLUSPLUS_POINTER(wbjnic);
+}