1 files changed, 81 insertions, 0 deletions
diff --git a/src/rocksdb/java/rocksjni/merge_operator.cc b/src/rocksdb/java/rocksjni/merge_operator.cc
new file mode 100644
index 000000000..edc3e7231
--- /dev/null
+++ b/src/rocksdb/java/rocksjni/merge_operator.cc
@@ -0,0 +1,81 @@
+// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+// Copyright (c) 2014, Vlad Balan (vlad.gm@gmail.com).  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++
+// for ROCKSDB_NAMESPACE::MergeOperator.
+
+#include <jni.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <memory>
+#include <string>
+
+#include "include/org_rocksdb_StringAppendOperator.h"
+#include "include/org_rocksdb_UInt64AddOperator.h"
+#include "rocksdb/db.h"
+#include "rocksdb/memtablerep.h"
+#include "rocksdb/merge_operator.h"
+#include "rocksdb/options.h"
+#include "rocksdb/slice_transform.h"
+#include "rocksdb/statistics.h"
+#include "rocksdb/table.h"
+#include "rocksjni/portal.h"
+#include "utilities/merge_operators.h"
+
+/*
+ * Class:     org_rocksdb_StringAppendOperator
+ * Method:    newSharedStringAppendOperator
+ * Signature: (C)J
+ */
+jlong Java_org_rocksdb_StringAppendOperator_newSharedStringAppendOperator(
+    JNIEnv* /*env*/, jclass /*jclazz*/, jchar jdelim) {
+  auto* sptr_string_append_op =
+      new std::shared_ptr<ROCKSDB_NAMESPACE::MergeOperator>(
+          ROCKSDB_NAMESPACE::MergeOperators::CreateStringAppendOperator(
+              (char)jdelim));
+  return reinterpret_cast<jlong>(sptr_string_append_op);
+}
+
+/*
+ * Class:     org_rocksdb_StringAppendOperator
+ * Method:    disposeInternal
+ * Signature: (J)V
+ */
+void Java_org_rocksdb_StringAppendOperator_disposeInternal(JNIEnv* /*env*/,
+                                                           jobject /*jobj*/,
+                                                           jlong jhandle) {
+  auto* sptr_string_append_op =
+      reinterpret_cast<std::shared_ptr<ROCKSDB_NAMESPACE::MergeOperator>*>(
+          jhandle);
+  delete sptr_string_append_op;  // delete std::shared_ptr
+}
+
+/*
+ * Class:     org_rocksdb_UInt64AddOperator
+ * Method:    newSharedUInt64AddOperator
+ * Signature: ()J
+ */
+jlong Java_org_rocksdb_UInt64AddOperator_newSharedUInt64AddOperator(
+    JNIEnv* /*env*/, jclass /*jclazz*/) {
+  auto* sptr_uint64_add_op =
+      new std::shared_ptr<ROCKSDB_NAMESPACE::MergeOperator>(
+          ROCKSDB_NAMESPACE::MergeOperators::CreateUInt64AddOperator());
+  return reinterpret_cast<jlong>(sptr_uint64_add_op);
+}
+
+/*
+ * Class:     org_rocksdb_UInt64AddOperator
+ * Method:    disposeInternal
+ * Signature: (J)V
+ */
+void Java_org_rocksdb_UInt64AddOperator_disposeInternal(JNIEnv* /*env*/,
+                                                        jobject /*jobj*/,
+                                                        jlong jhandle) {
+  auto* sptr_uint64_add_op =
+      reinterpret_cast<std::shared_ptr<ROCKSDB_NAMESPACE::MergeOperator>*>(
+          jhandle);
+  delete sptr_uint64_add_op;  // delete std::shared_ptr
+}