org.scijava.nativelib

Class BaseJniExtractor

java.lang.Object

org.scijava.nativelib.BaseJniExtractor

All Implemented Interfaces:

JniExtractor

Direct Known Subclasses:

DefaultJniExtractor, WebappJniExtractor

public abstract class BaseJniExtractor
extends Object
implements JniExtractor

Author:

Richard van der Hoff (richardv@mxtelecom.com)

Field Summary

Fields

Modifier and Type	Field and Description
protected static String	ALTR_TMPDIR
protected static String	JAVA_TMPDIR
protected static String	TMP_PREFIX

Constructor Summary

Constructors

Constructor and Description
BaseJniExtractor()
BaseJniExtractor(Class<?> libraryJarClass)

Method Summary

Modifier and Type	Method and Description
File	extractJni(String libPath, String libname) Extract a JNI library from the classpath to a temporary file.
void	extractRegistered() Extract all libraries which are registered for auto-extraction to files in the temporary directory.
abstract File	getJniDir() this is where JNI libraries are extracted to (e.g.
abstract File	getNativeDir() this is where native dependencies are extracted to (e.g.
protected static File	getTempDir()

Methods inherited from class java.lang.Object

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

Field Detail

JAVA_TMPDIR

protected static final String JAVA_TMPDIR

See Also:

Constant Field Values

ALTR_TMPDIR

protected static final String ALTR_TMPDIR

See Also:

Constant Field Values

TMP_PREFIX

protected static final String TMP_PREFIX

See Also:

Constant Field Values

Constructor Detail

BaseJniExtractor

public BaseJniExtractor()
                 throws IOException

Throws:

IOException

BaseJniExtractor

public BaseJniExtractor(Class<?> libraryJarClass)
                 throws IOException

Throws:

IOException

Method Detail

getTempDir

protected static File getTempDir()
                          throws IOException

Throws:

IOException

getNativeDir

public abstract File getNativeDir()

this is where native dependencies are extracted to (e.g. tmplib/).

Returns:

native working dir

getJniDir

public abstract File getJniDir()

this is where JNI libraries are extracted to (e.g. tmplib/classloaderName.1234567890000.0/).

Returns:

jni working dir

extractJni

public File extractJni(String libPath,
                       String libname)
                throws IOException

Description copied from interface: JniExtractor

Extract a JNI library from the classpath to a temporary file.

Specified by:

extractJni in interface JniExtractor

Parameters:

libPath - library path

libname - System.loadLibrary() compatible library name

Returns:

the extracted file

Throws:

IOException - when extracting the desired file failed

extractRegistered

public void extractRegistered()
                       throws IOException

Description copied from interface: JniExtractor

Extract all libraries which are registered for auto-extraction to files in the temporary directory.

Specified by:

extractRegistered in interface JniExtractor

Throws:

IOException - when extracting the desired file failed