Package org.rocksdb

Class NativeLibraryLoader

java.lang.Object

org.rocksdb.NativeLibraryLoader

public class NativeLibraryLoader
extends Object

This class is used to load the RocksDB shared library from within the jar. The shared library is extracted to a temp folder and loaded from there.

Method Summary

Modifier and Type	Method	Description
static NativeLibraryLoader	getInstance()	Get a reference to the NativeLibraryLoader
void	loadLibrary(String tmpDir)	Firstly attempts to load the library from java.library.path, if that fails then it falls back to extracting the library from the classpath loadLibraryFromJar(java.lang.String)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

getInstance

public static NativeLibraryLoader getInstance()

Get a reference to the NativeLibraryLoader

Returns:

The NativeLibraryLoader

loadLibrary

public void loadLibrary(String tmpDir)
                 throws IOException

Firstly attempts to load the library from java.library.path, if that fails then it falls back to extracting the library from the classpath loadLibraryFromJar(java.lang.String)

Parameters:

tmpDir - A temporary directory to use to copy the native library to when loading from the classpath. If null, or the empty string, we rely on Java's File.createTempFile(String, String) function to provide a temporary location. The temporary file will be registered for deletion on exit.

Throws:

IOException - if a filesystem operation fails.