org.ligoj.app.resource.plugin

Class PluginsClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.ligoj.app.resource.plugin.PluginsClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class PluginsClassLoader
extends URLClassLoader

Class Loader which load jars in "plugins" directory inside the home directory.

Field Summary

Fields

Modifier and Type	Field and Description
static String	EXPORT_DIR Plug-ins export directory inside the home property
static String	HOME_DIR_FOLDER Default home directory part used in addition of system user home directory : "/home/my-user" for sample.
static String	HOME_DIR_PROPERTY System property name pointing to the home directory.
static String	PLUGINS_DIR Plug-ins directory inside the home property

Constructor Summary

Constructors

Constructor and Description
PluginsClassLoader() Initialize the plug-in URLClassLoader and the related directories.

Method Summary

Modifier and Type	Method and Description
protected Path	computeHome() Compute the right home directory for the application from the system properties.
protected void	copy(Path from, Path dest) Copy a resource needed to be exported from the JAR plug-in to the home.
protected void	copyExportedResources(String plugin, Path pluginFile, URI uri) Copy resources needed to be exported from the JAR plug-in to the home.

Methods inherited from class java.net.URLClassLoader

addURL, close, definePackage, findClass, findResource, findResources, getPermissions, getResourceAsStream, getURLs, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass, defineClass

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findLibrary, findLoadedClass, findSystemClass, getClassLoadingLock, getPackage, getPackages, getParent, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, loadClass, registerAsParallelCapable, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Field Detail

HOME_DIR_PROPERTY

public static final String HOME_DIR_PROPERTY

System property name pointing to the home directory. When undefined, system user home directory will be used

See Also:

Constant Field Values

HOME_DIR_FOLDER

public static final String HOME_DIR_FOLDER

Default home directory part used in addition of system user home directory : "/home/my-user" for sample.

See Also:

Constant Field Values

PLUGINS_DIR

public static final String PLUGINS_DIR

Plug-ins directory inside the home property

See Also:

Constant Field Values

EXPORT_DIR

public static final String EXPORT_DIR

Plug-ins export directory inside the home property

See Also:

Constant Field Values

Constructor Detail

PluginsClassLoader

public PluginsClassLoader()
                   throws IOException

Initialize the plug-in URLClassLoader and the related directories.

Throws:

IOException - exception when reading plug-ins directory

Method Detail

copyExportedResources

protected void copyExportedResources(String plugin,
                                     Path pluginFile,
                                     URI uri)
                              throws IOException

Copy resources needed to be exported from the JAR plug-in to the home.

Throws:

IOException

copy

protected void copy(Path from,
                    Path dest)
             throws IOException

Copy a resource needed to be exported from the JAR plug-in to the home.

Throws:

IOException

computeHome

protected Path computeHome()

Compute the right home directory for the application from the system properties.

Returns:

The computed home directory.