jsynoptic.ui
Class PluginLookup

java.lang.Object
  jsynoptic.ui.PluginLookup

public class PluginLookup
extends java.lang.Object

This class contains utilities to get/set dynamically the class path and the native library path It is strongly dependent on Sun's JDK implementation. Patches to support other JVMs welcome :)

Field Summary

static BasicMessageWriter	messageWriter Resources
protected static java.lang.String	separator
protected static java.lang.Class	sysclass
protected static java.net.URLClassLoader	sysloader

Constructor Summary

PluginLookup()

Method Summary

static void	addClassPath(java.io.File f) Adds the given file to the classpath.
static void	addClassPath(java.lang.String s) Adds the given string to the classpath.
static void	addClassPath(java.net.URL url) Adds the given URL to the classpath.
static void	addNativePath(java.io.File localPath) Adds the given local path to the native library paths
static void	addPluginPaths() This method tries to automatically add the plugin paths It looks for the main class is in the classpath Then it adds the content of the "plugins" sirectory sibling to the core one, if it exists I also adds all sub-directories found inside it as class directories, and all jars found in the subdirectories in the class path too.
static boolean	addPluginPaths(boolean userChoice, java.awt.Window parentWindow) This method tries to add the plugin paths It looks for the main class is in the classpath Then it adds the content of the "plugins" sirectory sibling to the core one, if it exists I also adds all sub-directories found inside it as class directories, and all jars found in the subdirectories in the class path too.
static java.lang.String	getClassPath()
static java.lang.String	getNativePath()
static boolean	isNativeLibrary(java.io.File f) Helper function to determine if a given file is a dynamic native library
static java.util.Vector	lookup()
static void	main(java.lang.String[] args)
static java.util.Vector	search(java.lang.Class theClass) Public method to search for all implementors of a given class object, in the classpath
static java.util.Vector	search(java.lang.Class theClass, java.lang.String dirOrJar, java.util.Vector entries)
static java.util.Vector	search(java.lang.String dirOrJar, java.util.Vector entries)
protected static void	searchFile(java.lang.Class theClass, java.io.File d, java.util.Vector results, java.lang.String prefix)
protected static void	searchJar(java.lang.Class theClass, java.util.jar.JarFile j, java.util.Vector results)
protected static void	testElement(java.lang.Class theClass, java.lang.String name, java.util.Vector results)

Methods inherited from class java.lang.Object

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

Field Detail

messageWriter

public static BasicMessageWriter messageWriter

Resources

separator

protected static java.lang.String separator

sysloader

protected static java.net.URLClassLoader sysloader

sysclass

protected static java.lang.Class sysclass

Constructor Detail

PluginLookup

public PluginLookup()

Method Detail

testElement

protected static void testElement(java.lang.Class theClass,
                                  java.lang.String name,
                                  java.util.Vector results)

searchJar

protected static void searchJar(java.lang.Class theClass,
                                java.util.jar.JarFile j,
                                java.util.Vector results)
                         throws java.io.IOException

Throws:

java.io.IOException

searchFile

protected static void searchFile(java.lang.Class theClass,
                                 java.io.File d,
                                 java.util.Vector results,
                                 java.lang.String prefix)

search

public static java.util.Vector search(java.lang.Class theClass)

Public method to search for all implementors of a given class object, in the classpath

search

public static java.util.Vector search(java.lang.String dirOrJar,
                                      java.util.Vector entries)

search

public static java.util.Vector search(java.lang.Class theClass,
                                      java.lang.String dirOrJar,
                                      java.util.Vector entries)

lookup

public static java.util.Vector lookup()

addClassPath

public static void addClassPath(java.lang.String s)

Adds the given string to the classpath. A great thanks to java forum user 8025 = antony_miguel for dynamic classpath modification

addClassPath

public static void addClassPath(java.io.File f)

Adds the given file to the classpath. A great thanks to java forum user 8025 = antony_miguel for dynamic classpath modification

addClassPath

public static void addClassPath(java.net.URL url)

Adds the given URL to the classpath. A great thanks to java forum user 8025 = antony_miguel for dynamic classpath modification

addNativePath

public static void addNativePath(java.io.File localPath)

Adds the given local path to the native library paths

isNativeLibrary

public static boolean isNativeLibrary(java.io.File f)

Helper function to determine if a given file is a dynamic native library

addPluginPaths

public static void addPluginPaths()

This method tries to automatically add the plugin paths It looks for the main class is in the classpath Then it adds the content of the "plugins" sirectory sibling to the core one, if it exists I also adds all sub-directories found inside it as class directories, and all jars found in the subdirectories in the class path too.

addPluginPaths

public static boolean addPluginPaths(boolean userChoice,
                                     java.awt.Window parentWindow)

This method tries to add the plugin paths It looks for the main class is in the classpath Then it adds the content of the "plugins" sirectory sibling to the core one, if it exists I also adds all sub-directories found inside it as class directories, and all jars found in the subdirectories in the class path too.

Parameters:

userChoice - if true then the user can confirm the selected paths

parentWindow - the owner for the dialog box displayed in interactive mode

Returns:

false if user selects cancel

getClassPath

public static java.lang.String getClassPath()

getNativePath

public static java.lang.String getNativePath()

main

public static void main(java.lang.String[] args)