1 // Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
2 // This source code is licensed under both the GPLv2 (found in the
3 // COPYING file in the root directory) and Apache 2.0 License
4 // (found in the LICENSE.Apache file in the root directory).
5 //
6 // This file implements the "bridge" between Java and C++ for
7 // ROCKSDB_NAMESPACE::Comparator.
8
9 #include <jni.h>
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <functional>
13 #include <string>
14
15 #include "include/org_rocksdb_AbstractComparator.h"
16 #include "include/org_rocksdb_NativeComparatorWrapper.h"
17 #include "rocksjni/comparatorjnicallback.h"
18 #include "rocksjni/portal.h"
19
20 /*
21 * Class: org_rocksdb_AbstractComparator
22 * Method: createNewComparator
23 * Signature: (J)J
24 */
Java_org_rocksdb_AbstractComparator_createNewComparator(JNIEnv * env,jobject jcomparator,jlong copt_handle)25 jlong Java_org_rocksdb_AbstractComparator_createNewComparator(
26 JNIEnv* env, jobject jcomparator, jlong copt_handle) {
27 auto* copt =
28 reinterpret_cast<ROCKSDB_NAMESPACE::ComparatorJniCallbackOptions*>(
29 copt_handle);
30 auto* c =
31 new ROCKSDB_NAMESPACE::ComparatorJniCallback(env, jcomparator, copt);
32 return reinterpret_cast<jlong>(c);
33 }
34
35 /*
36 * Class: org_rocksdb_AbstractComparator
37 * Method: usingDirectBuffers
38 * Signature: (J)Z
39 */
Java_org_rocksdb_AbstractComparator_usingDirectBuffers(JNIEnv *,jobject,jlong jhandle)40 jboolean Java_org_rocksdb_AbstractComparator_usingDirectBuffers(
41 JNIEnv*, jobject, jlong jhandle) {
42 auto* c =
43 reinterpret_cast<ROCKSDB_NAMESPACE::ComparatorJniCallback*>(jhandle);
44 return static_cast<jboolean>(c->m_options->direct_buffer);
45 }
46
47 /*
48 * Class: org_rocksdb_NativeComparatorWrapper
49 * Method: disposeInternal
50 * Signature: (J)V
51 */
Java_org_rocksdb_NativeComparatorWrapper_disposeInternal(JNIEnv *,jobject,jlong jcomparator_handle)52 void Java_org_rocksdb_NativeComparatorWrapper_disposeInternal(
53 JNIEnv* /*env*/, jobject /*jobj*/, jlong jcomparator_handle) {
54 auto* comparator =
55 reinterpret_cast<ROCKSDB_NAMESPACE::Comparator*>(jcomparator_handle);
56 delete comparator;
57 }
58