de.intarsys.tools.installresource
Class Install

java.lang.Object
  de.intarsys.tools.installresource.Install

Direct Known Subclasses:

InstallFile, InstallFileList, InstallZip

public abstract class Install
extends Object

Abstract superclass for implementing file resource deployment behavior.

This is a useful package to deploy file based resources along with the classloader. Files or directories are detected via classloader and copied temporarily to the file system. Here you can access the resources locally - for example for loading a native library.

Platform dependent resources are supported via subdirectories.

When loading a non platform dependent resource, the file is searched in the class loader with getResourceAsStream(x) where x is

• [path]/[filename]

When loading a platform dependent resource, the file is searched in the class loader with getResourceAsStream(x) where x is one of

• [path]/[os.name]-[os.arch]/[filename]
• [path]/[os.short name]-[os.arch]/[filename]
• [path]/default/[filename]

In this definition

• [path] is a path prefix defined upon creation of an Install instance
• [os.name] is the System property os.name in lowercase
• [os.short name] is derived from the System property os.name by using the beginning up to the first whitespace in lowercase
• [os.arch] is the System property os.arch in lowercase
• [filename] is the name defined upon object creation

For example, with InstallFile("foo", "bar.dll", true) on a Windows Vista machine you will search for:

• foo/windows vista-x86/bar.dll
• foo/windows-x86/bar.dll
• foo/default/bar.dll

Constructor Summary

Install(String path, String name, boolean platformDependent)

Method Summary

boolean	delete() Delete the temporary installation.
ClassLoader	getClassLoader()
File	getFile()
File[]	getFiles()
String	getName()
String	getPath()
static String	getPlatformDefaultId()
static String	getPlatformFallbackId()
static String	getPlatformId()
boolean	isPlatformDependent()
File	load() Load the first occurrence of the designated target from the classloader and save it as a local temporary resource.
File[]	loadAll() Load all occurrences of the designated target from the classloader.
void	setClassLoader(ClassLoader classLoader)
static void	setPlatformFallbackId(String value)
static void	setPlatformId(String value)

Methods inherited from class java.lang.Object

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

Constructor Detail

Install

public Install(String path,
               String name,
               boolean platformDependent)

Method Detail

getPlatformDefaultId

public static String getPlatformDefaultId()

getPlatformFallbackId

public static String getPlatformFallbackId()

getPlatformId

public static String getPlatformId()

setPlatformFallbackId

public static void setPlatformFallbackId(String value)

setPlatformId

public static void setPlatformId(String value)

delete

public boolean delete()

Delete the temporary installation.

Returns:

true if all artifacts are deleted.

getClassLoader

public ClassLoader getClassLoader()

getFile

public File getFile()

getFiles

public File[] getFiles()

getName

public String getName()

getPath

public String getPath()

isPlatformDependent

public boolean isPlatformDependent()

load

public File load()
          throws IOException

Load the first occurrence of the designated target from the classloader and save it as a local temporary resource. The path to this resource is returned.

Returns:

Load the first occurrence of the designated target from the classloader.

Throws:

IOException

loadAll

public File[] loadAll()
               throws IOException

Load all occurrences of the designated target from the classloader.

Returns:

Load all occurrences of the designated target from the classloader.

Throws:

IOException

setClassLoader

public void setClassLoader(ClassLoader classLoader)