mirror of
https://github.com/facebook/rocksdb.git
synced 2024-11-27 11:43:49 +00:00
122 lines
3.3 KiB
C++
122 lines
3.3 KiB
C++
// Copyright (c) 2014, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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// This file implements the "bridge" between Java and C++ and enables
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// calling c++ rocksdb::Iterator methods from Java side.
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#include <stdio.h>
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#include <stdlib.h>
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#include <jni.h>
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#include "include/org_rocksdb_Iterator.h"
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#include "rocksjni/portal.h"
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#include "rocksdb/iterator.h"
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jboolean Java_org_rocksdb_Iterator_isValid0(
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JNIEnv* env, jobject jobj, jlong handle) {
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auto st = reinterpret_cast<rocksdb::Iterator*>(handle);
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assert(st != nullptr);
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return st->Valid();
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}
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void Java_org_rocksdb_Iterator_seekToFirst0(
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JNIEnv* env, jobject jobj, jlong handle) {
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auto st = reinterpret_cast<rocksdb::Iterator*>(handle);
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assert(st != nullptr);
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st->SeekToFirst();
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}
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void Java_org_rocksdb_Iterator_seekToLast0(
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JNIEnv* env, jobject jobj, jlong handle) {
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auto st = reinterpret_cast<rocksdb::Iterator*>(handle);
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assert(st != nullptr);
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st->SeekToLast();
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}
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void Java_org_rocksdb_Iterator_next0(
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JNIEnv* env, jobject jobj, jlong handle) {
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auto st = reinterpret_cast<rocksdb::Iterator*>(handle);
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assert(st != nullptr);
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st->Next();
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}
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void Java_org_rocksdb_Iterator_prev0(
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JNIEnv* env, jobject jobj, jlong handle) {
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auto st = reinterpret_cast<rocksdb::Iterator*>(handle);
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assert(st != nullptr);
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st->Prev();
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}
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jbyteArray Java_org_rocksdb_Iterator_key0(
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JNIEnv* env, jobject jobj, jlong handle) {
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auto st = reinterpret_cast<rocksdb::Iterator*>(handle);
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assert(st != nullptr);
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rocksdb::Slice key_slice = st->key();
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jbyteArray jkey = env->NewByteArray(key_slice.size());
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env->SetByteArrayRegion(
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jkey, 0, key_slice.size(),
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reinterpret_cast<const jbyte*>(key_slice.data()));
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return jkey;
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}
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jbyteArray Java_org_rocksdb_Iterator_value0(
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JNIEnv* env, jobject jobj, jlong handle) {
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auto st = reinterpret_cast<rocksdb::Iterator*>(handle);
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assert(st != nullptr);
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rocksdb::Slice value_slice = st->value();
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jbyteArray jvalue = env->NewByteArray(value_slice.size());
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env->SetByteArrayRegion(
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jvalue, 0, value_slice.size(),
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reinterpret_cast<const jbyte*>(value_slice.data()));
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return jvalue;
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}
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void Java_org_rocksdb_Iterator_seek0(
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JNIEnv* env, jobject jobj, jlong handle,
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jbyteArray jtarget, jint jtarget_len) {
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auto st = reinterpret_cast<rocksdb::Iterator*>(handle);
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assert(st != nullptr);
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jbyte* target = env->GetByteArrayElements(jtarget, 0);
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rocksdb::Slice target_slice(
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reinterpret_cast<char*>(target), jtarget_len);
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st->Seek(target_slice);
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env->ReleaseByteArrayElements(jtarget, target, JNI_ABORT);
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}
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void Java_org_rocksdb_Iterator_status0(
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JNIEnv* env, jobject jobj, jlong handle) {
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auto st = reinterpret_cast<rocksdb::Iterator*>(handle);
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assert(st != nullptr);
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rocksdb::Status s = st->status();
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if (s.ok()) {
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return;
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}
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rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
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}
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void Java_org_rocksdb_Iterator_close0(
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JNIEnv* env, jobject jobj, jlong handle) {
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auto st = reinterpret_cast<rocksdb::Iterator*>(handle);
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assert(st != nullptr);
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delete st;
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rocksdb::IteratorJni::setHandle(env, jobj, nullptr);
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} |