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Java facility to use the RemoveEmptyValueCompactionFilter

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This commit is contained in:
Adam Retter 2015-07-14 17:48:16 +01:00
parent 3d00271e40
commit 91bf1b80ef
4 changed files with 47 additions and 0 deletions
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1
java/Makefile
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@ -24,6 +24,7 @@ NATIVE_JAVA_CLASSES = org.rocksdb.AbstractCompactionFilter\
org.rocksdb.Options\
org.rocksdb.PlainTableConfig\
org.rocksdb.ReadOptions\
org.rocksdb.RemoveEmptyValueCompactionFilter\
org.rocksdb.RestoreBackupableDB\
org.rocksdb.RestoreOptions\
org.rocksdb.RocksDB\

27
java/rocksjni/remove_emptyvalue_compactionfilterjni.cc Normal file
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@ -0,0 +1,27 @@
// Copyright (c) 2015, 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.
#include <jni.h>
#include "include/org_rocksdb_RemoveEmptyValueCompactionFilter.h"
#include "utilities/compaction_filters/remove_emptyvalue_compactionfilter.h"
/*
* Class: org_rocksdb_RemoveEmptyValueCompactionFilter
* Method: createNewRemoveEmptyValueCompactionFilter0
* Signature: ()V
*/
void Java_org_rocksdb_RemoveEmptyValueCompactionFilter_createNewRemoveEmptyValueCompactionFilter0(
JNIEnv* env, jobject jobj) {
const rocksdb::RemoveEmptyValueCompactionFilter* compaction_filter =
new rocksdb::RemoveEmptyValueCompactionFilter();
// set the native handle to our native compaction filter
static jclass jclazz =
env->FindClass("org/rocksdb/RemoveEmptyValueCompactionFilter");
static jfieldID fid = env->GetFieldID(jclazz, "nativeHandle_", "J");
env->SetLongField(jobj, fid, reinterpret_cast<jlong>(compaction_filter));
}

18
java/src/main/java/org/rocksdb/RemoveEmptyValueCompactionFilter.java Normal file
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@ -0,0 +1,18 @@
// 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.
package org.rocksdb;
/**
* Just a Java wrapper around EmptyValueCompactionFilter implemented in C++
*/
public class RemoveEmptyValueCompactionFilter extends AbstractCompactionFilter<Slice> {
public RemoveEmptyValueCompactionFilter() {
super();
createNewRemoveEmptyValueCompactionFilter0();
}
private native void createNewRemoveEmptyValueCompactionFilter0();
}

1
src.mk
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@ -257,6 +257,7 @@ JNI_NATIVE_SOURCES = \
java/rocksjni/merge_operator.cc \
java/rocksjni/options.cc \
java/rocksjni/ratelimiterjni.cc \
java/rocksjni/remove_emptyvalue_compactionfilterjni.cc \
java/rocksjni/restorejni.cc \
java/rocksjni/rocksjni.cc \
java/rocksjni/slice.cc \