rocksdb/java/rocksjni/slice.cc

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// Copyright (c) 2014, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
// This file implements the "bridge" between Java and C++ for
// rocksdb::Slice.
#include <stdio.h>
#include <stdlib.h>
#include <jni.h>
#include <string>
#include "include/org_rocksdb_AbstractSlice.h"
#include "include/org_rocksdb_Slice.h"
#include "include/org_rocksdb_DirectSlice.h"
#include "rocksdb/slice.h"
#include "rocksjni/portal.h"
// <editor-fold desc="org.rocksdb.AbstractSlice>
/*
* Class: org_rocksdb_AbstractSlice
* Method: createNewSliceFromString
* Signature: (Ljava/lang/String;)V
*/
void Java_org_rocksdb_AbstractSlice_createNewSliceFromString(
JNIEnv* env, jobject jobj, jstring jstr) {
const auto* str = env->GetStringUTFChars(jstr, 0);
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const size_t len = strlen(str);
char* buf = new char[len];
memcpy(buf, str, len);
env->ReleaseStringUTFChars(jstr, str);
const auto* slice = new rocksdb::Slice(buf);
rocksdb::AbstractSliceJni::setHandle(env, jobj, slice);
}
/*
* Class: org_rocksdb_AbstractSlice
* Method: size0
* Signature: (J)I
*/
jint Java_org_rocksdb_AbstractSlice_size0(
JNIEnv* env, jobject jobj, jlong handle) {
const auto* slice = reinterpret_cast<rocksdb::Slice*>(handle);
return static_cast<jint>(slice->size());
}
/*
* Class: org_rocksdb_AbstractSlice
* Method: empty0
* Signature: (J)Z
*/
jboolean Java_org_rocksdb_AbstractSlice_empty0(
JNIEnv* env, jobject jobj, jlong handle) {
const auto* slice = reinterpret_cast<rocksdb::Slice*>(handle);
return slice->empty();
}
/*
* Class: org_rocksdb_AbstractSlice
* Method: toString0
* Signature: (JZ)Ljava/lang/String;
*/
jstring Java_org_rocksdb_AbstractSlice_toString0(
JNIEnv* env, jobject jobj, jlong handle, jboolean hex) {
const auto* slice = reinterpret_cast<rocksdb::Slice*>(handle);
const std::string s = slice->ToString(hex);
return env->NewStringUTF(s.c_str());
}
/*
* Class: org_rocksdb_AbstractSlice
* Method: compare0
* Signature: (JJ)I;
*/
jint Java_org_rocksdb_AbstractSlice_compare0(
JNIEnv* env, jobject jobj, jlong handle, jlong otherHandle) {
const auto* slice = reinterpret_cast<rocksdb::Slice*>(handle);
const auto* otherSlice =
reinterpret_cast<rocksdb::Slice*>(otherHandle);
return slice->compare(*otherSlice);
}
/*
* Class: org_rocksdb_AbstractSlice
* Method: startsWith0
* Signature: (JJ)Z;
*/
jboolean Java_org_rocksdb_AbstractSlice_startsWith0(
JNIEnv* env, jobject jobj, jlong handle, jlong otherHandle) {
const auto* slice = reinterpret_cast<rocksdb::Slice*>(handle);
const auto* otherSlice =
reinterpret_cast<rocksdb::Slice*>(otherHandle);
return slice->starts_with(*otherSlice);
}
/*
* Class: org_rocksdb_AbstractSlice
* Method: disposeInternal
* Signature: (J)V
*/
void Java_org_rocksdb_AbstractSlice_disposeInternal(
JNIEnv* env, jobject jobj, jlong handle) {
delete reinterpret_cast<rocksdb::Slice*>(handle);
}
// </editor-fold>
// <editor-fold desc="org.rocksdb.Slice>
/*
* Class: org_rocksdb_Slice
* Method: createNewSlice0
* Signature: ([BI)V
*/
void Java_org_rocksdb_Slice_createNewSlice0(
JNIEnv * env, jobject jobj, jbyteArray data, jint offset) {
const jsize dataSize = env->GetArrayLength(data);
const int len = dataSize - offset;
jbyte* ptrData = new jbyte[len];
env->GetByteArrayRegion(data, offset, len, ptrData);
const auto* slice = new rocksdb::Slice((const char*)ptrData, len);
rocksdb::AbstractSliceJni::setHandle(env, jobj, slice);
}
/*
* Class: org_rocksdb_Slice
* Method: createNewSlice1
* Signature: ([B)V
*/
void Java_org_rocksdb_Slice_createNewSlice1(
JNIEnv * env, jobject jobj, jbyteArray data) {
const int len = env->GetArrayLength(data) + 1;
jboolean isCopy;
jbyte* ptrData = env->GetByteArrayElements(data, &isCopy);
char* buf = new char[len];
memcpy(buf, ptrData, len - 1);
buf[len-1]='\0';
const auto* slice =
new rocksdb::Slice(buf, len - 1);
rocksdb::AbstractSliceJni::setHandle(env, jobj, slice);
env->ReleaseByteArrayElements(data, ptrData, JNI_ABORT);
// NOTE: buf will be deleted in the org.rocksdb.Slice#dispose method
}
/*
* Class: org_rocksdb_Slice
* Method: data0
* Signature: (J)[B
*/
jbyteArray Java_org_rocksdb_Slice_data0(
JNIEnv* env, jobject jobj, jlong handle) {
const auto* slice = reinterpret_cast<rocksdb::Slice*>(handle);
const int len = static_cast<int>(slice->size());
const jbyteArray data = env->NewByteArray(len);
env->SetByteArrayRegion(data, 0, len,
reinterpret_cast<const jbyte*>(slice->data()));
return data;
}
/*
* Class: org_rocksdb_Slice
* Method: disposeInternalBuf
* Signature: (J)V
*/
void Java_org_rocksdb_Slice_disposeInternalBuf(
JNIEnv * env, jobject jobj, jlong handle) {
const auto* slice = reinterpret_cast<rocksdb::Slice*>(handle);
delete [] slice->data_;
}
// </editor-fold>
// <editor-fold desc="org.rocksdb.DirectSlice>
/*
* Class: org_rocksdb_DirectSlice
* Method: createNewDirectSlice0
* Signature: (Ljava/nio/ByteBuffer;I)V
*/
void Java_org_rocksdb_DirectSlice_createNewDirectSlice0(
JNIEnv* env, jobject jobj, jobject data, jint length) {
const auto* ptrData =
reinterpret_cast<char*>(env->GetDirectBufferAddress(data));
const auto* slice = new rocksdb::Slice(ptrData, length);
rocksdb::AbstractSliceJni::setHandle(env, jobj, slice);
}
/*
* Class: org_rocksdb_DirectSlice
* Method: createNewDirectSlice1
* Signature: (Ljava/nio/ByteBuffer;)V
*/
void Java_org_rocksdb_DirectSlice_createNewDirectSlice1(
JNIEnv* env, jobject jobj, jobject data) {
const auto* ptrData =
reinterpret_cast<char*>(env->GetDirectBufferAddress(data));
const auto* slice = new rocksdb::Slice(ptrData);
rocksdb::AbstractSliceJni::setHandle(env, jobj, slice);
}
/*
* Class: org_rocksdb_DirectSlice
* Method: data0
* Signature: (J)Ljava/lang/Object;
*/
jobject Java_org_rocksdb_DirectSlice_data0(
JNIEnv* env, jobject jobj, jlong handle) {
const auto* slice = reinterpret_cast<rocksdb::Slice*>(handle);
return env->NewDirectByteBuffer(const_cast<char*>(slice->data()),
slice->size());
}
/*
* Class: org_rocksdb_DirectSlice
* Method: get0
* Signature: (JI)B
*/
jbyte Java_org_rocksdb_DirectSlice_get0(
JNIEnv* env, jobject jobj, jlong handle, jint offset) {
const auto* slice = reinterpret_cast<rocksdb::Slice*>(handle);
return (*slice)[offset];
}
/*
* Class: org_rocksdb_DirectSlice
* Method: clear0
* Signature: (J)V
*/
void Java_org_rocksdb_DirectSlice_clear0(
JNIEnv* env, jobject jobj, jlong handle) {
auto* slice = reinterpret_cast<rocksdb::Slice*>(handle);
delete [] slice->data_;
slice->clear();
}
/*
* Class: org_rocksdb_DirectSlice
* Method: removePrefix0
* Signature: (JI)V
*/
void Java_org_rocksdb_DirectSlice_removePrefix0(
JNIEnv* env, jobject jobj, jlong handle, jint length) {
auto* slice = reinterpret_cast<rocksdb::Slice*>(handle);
slice->remove_prefix(length);
}
// </editor-fold>