ARCHIVE/rippled
1
0
Fork 0
mirror of https://github.com/XRPLF/rippled.git synced 2025-12-06 17:27:55 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add a java api for rocksdb::Options, currently only supports create_if_missing.

Browse Source 
Summary:
* [java] Add a java api for rocksdb::Options, currently only supports create_if_missing.
* [java] Add a test for RocksDBException in RocksDBSample.

Test Plan: make jtest

Reviewers: haobo, sdong

Reviewed By: haobo

CC: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D17385
This commit is contained in:
Yueh-Hsuan Chiang
2014-04-01 16:59:05 -07:00
parent e0a87c4cf1
commit 8c4a3bfa5b
8 changed files with 235 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

69
java/org/rocksdb/Options.java Normal file
View File

@@ -0,0 +1,69 @@
// 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;
/**
* Options to control the behavior of a database. It will be used
* during the creation of a RocksDB (i.e., RocksDB::Open()).
*
* Note that dispose() must be called before an Options instance
* become out-of-scope to release the allocated memory in c++.
*/
public class Options {
/**
* Construct options for opening a RocksDB.
*
* This constructor will create (by allocating a block of memory)
* an rocksdb::Options in the c++ side.
*/
public Options() {
nativeHandle_ = 0;
newOptions();
}
/**
* If this value is set to true, then the database will be created
* if it is missing during RocksDB::Open().
* Default: false
*
* @param flag a flag indicating whether to create a database the
* specified database in RocksDB::Open() operation is missing.
* @see RocksDB::Open()
*/
public void setCreateIfMissing(boolean flag) {
assert(nativeHandle_ != 0);
setCreateIfMissing(nativeHandle_, flag);
}
/**
* Return true if the create_if_missing flag is set to true.
* If true, the database will be created if it is missing.
*
* @return return true if the create_if_missing flag is set to true.
* @see setCreateIfMissing()
*/
public boolean craeteIfMissing() {
assert(nativeHandle_ != 0);
return createIfMissing(nativeHandle_);
}
/**
* Release the memory allocated for the current instance
* in the c++ side.
*/
public synchronized void dispose() {
if (nativeHandle_ != 0) {
dispose0();
}
}
private native void newOptions();
private native void dispose0();
private native void setCreateIfMissing(long handle, boolean flag);
private native boolean createIfMissing(long handle);
long nativeHandle_;
}