1 files changed, 60 insertions, 0 deletions
diff --git a/src/rocksdb/java/rocksjni/comparator.cc b/src/rocksdb/java/rocksjni/comparator.cc
new file mode 100644
index 000000000..11279c4ce
--- /dev/null
+++ b/src/rocksdb/java/rocksjni/comparator.cc
@@ -0,0 +1,60 @@
+// 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++ for
+// ROCKSDB_NAMESPACE::Comparator.
+
+#include <jni.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <functional>
+#include <string>
+
+#include "include/org_rocksdb_AbstractComparator.h"
+#include "include/org_rocksdb_NativeComparatorWrapper.h"
+#include "rocksjni/comparatorjnicallback.h"
+#include "rocksjni/cplusplus_to_java_convert.h"
+#include "rocksjni/portal.h"
+
+/*
+ * Class:     org_rocksdb_AbstractComparator
+ * Method:    createNewComparator
+ * Signature: (J)J
+ */
+jlong Java_org_rocksdb_AbstractComparator_createNewComparator(
+    JNIEnv* env, jobject jcomparator, jlong copt_handle) {
+  auto* copt =
+      reinterpret_cast<ROCKSDB_NAMESPACE::ComparatorJniCallbackOptions*>(
+          copt_handle);
+  auto* c =
+      new ROCKSDB_NAMESPACE::ComparatorJniCallback(env, jcomparator, copt);
+  return GET_CPLUSPLUS_POINTER(c);
+}
+
+/*
+ * Class:     org_rocksdb_AbstractComparator
+ * Method:    usingDirectBuffers
+ * Signature: (J)Z
+ */
+jboolean Java_org_rocksdb_AbstractComparator_usingDirectBuffers(JNIEnv*,
+                                                                jobject,
+                                                                jlong jhandle) {
+  auto* c =
+      reinterpret_cast<ROCKSDB_NAMESPACE::ComparatorJniCallback*>(jhandle);
+  return static_cast<jboolean>(c->m_options->direct_buffer);
+}
+
+/*
+ * Class:     org_rocksdb_NativeComparatorWrapper
+ * Method:    disposeInternal
+ * Signature: (J)V
+ */
+void Java_org_rocksdb_NativeComparatorWrapper_disposeInternal(
+    JNIEnv* /*env*/, jobject /*jobj*/, jlong jcomparator_handle) {
+  auto* comparator =
+      reinterpret_cast<ROCKSDB_NAMESPACE::Comparator*>(jcomparator_handle);
+  delete comparator;
+}