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

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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
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18
java/org/rocksdb/RocksDB.java
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@@ -20,12 +20,16 @@ public class RocksDB {
public static final int NOT_FOUND = -1;
/**
* The factory constructor of RocksDB that opens a RocksDB instance given
* the path to the database.
* the path to the database using the default options w/ createIfMissing
* set to true.
*
* @param path the path to the rocksdb.
* @param status an out value indicating the status of the Open().
* @return a rocksdb instance on success, null if the specified rocksdb can
* not be opened.
*
* @see Options.setCreateIfMissing()
* @see Options.createIfMissing()
*/
public static RocksDB open(String path) throws RocksDBException {
RocksDB db = new RocksDB();
@@ -33,6 +37,17 @@ public class RocksDB {
return db;
}
/**
* The factory constructor of RocksDB that opens a RocksDB instance given
* the path to the database using the specified options and db path.
*/
public static RocksDB open(Options options, String path)
throws RocksDBException {
RocksDB db = new RocksDB();
db.open(options.nativeHandle_, path);
return db;
}
public synchronized void close() {
if (nativeHandle_ != 0) {
close0();
@@ -93,6 +108,7 @@ public class RocksDB {
// native methods
private native void open0(String path) throws RocksDBException;
private native void open(long optionsHandle, String path) throws RocksDBException;
private native void put(
byte[] key, int keyLen,
byte[] value, int valueLen) throws RocksDBException;