weka.core

Class JRINativeLoader

java.lang.Object

weka.core.JRINativeLoader

public class JRINativeLoader
extends java.lang.Object

Takes care of loading the native JRI library. The byte code for this class gets injected into the root class loader by weka.core.JRILoader in order to ensure that the native library is visible to all child class loaders.

Version:

$Revision: 10426 $

Author:

Mark Hall (mhall{[at]}pentaho{[dot]}com)

Constructor Summary

Constructors

Constructor and Description
JRINativeLoader()

Method Summary

Modifier and Type	Method and Description
static boolean	isJriLoaded() This indicates if the library for communicating with R could be loaded at all.
static void	loadLibrary() This method will try to load a JRI library that is in the accessible library path.
static void	loadLibrary(java.io.File libraryFile) This method will try to load a JRI library that is addressed by libraryFile.
static void	loadLibrary(java.lang.String libraryFile) This method will try to load a JRI library that is addressed by libraryFile.

Methods inherited from class java.lang.Object

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

Constructor Detail

JRINativeLoader

public JRINativeLoader()

Method Detail

loadLibrary

public static void loadLibrary()
                        throws java.lang.UnsatisfiedLinkError,
                               java.lang.SecurityException

This method will try to load a JRI library that is in the accessible library path. If anything goes wrong, an exception is thrown and isJriLoaded() will still return false

Throws:

java.lang.UnsatisfiedLinkError

java.lang.SecurityException

loadLibrary

public static void loadLibrary(java.lang.String libraryFile)
                        throws java.lang.UnsatisfiedLinkError,
                               java.lang.SecurityException

This method will try to load a JRI library that is addressed by libraryFile. This still needs to have the R libraries in the accessible path to resolve links. If anything goes wrong, an exception is thrown and isJriLoaded() will still return false

Throws:

java.lang.UnsatisfiedLinkError

java.lang.SecurityException

loadLibrary

public static void loadLibrary(java.io.File libraryFile)
                        throws java.lang.UnsatisfiedLinkError,
                               java.lang.SecurityException

This method will try to load a JRI library that is addressed by libraryFile. This still needs to have the R libraries in the accessible path to resolve links. If anything goes wrong, an exception is thrown and isJriLoaded() will still return false

Throws:

java.lang.UnsatisfiedLinkError

java.lang.SecurityException

isJriLoaded

public static boolean isJriLoaded()

This indicates if the library for communicating with R could be loaded at all.