org.shared.metaclass

Class JarRegistry

java.lang.Object

org.shared.metaclass.JarRegistry

All Implemented Interfaces:

ResourceRegistry

public class JarRegistry
extends Object
implements ResourceRegistry

An implementation of ResourceRegistry that consults JarFiles and JarInputStreams for resources.

Constructor Summary

Constructors

Modifier	Constructor and Description
	JarRegistry(JarFile jf) Default constructor.
	JarRegistry(JarInputStream jis) Alternate constructor.
protected	JarRegistry(Map<String,byte[]> dataMap) Internal constructor.

Method Summary

Methods

Modifier and Type	Method and Description
protected static Map<String,byte[]>	createDataMap(JarFile jf) Creates a mapping of pathnames to data from a JarFile.
protected static Map<String,byte[]>	createDataMap(JarInputStream jis) Creates a mapping of pathnames to data from a JarInputStream.
Map<String,byte[]>	getDataMap() Gets the Map of resource pathnames to byte arrays.
URL	getResource(String pathname) Gets a resource URL corresponding to the given pathname.
InputStream	getResourceAsStream(String pathname) Gets an InputStream to the resource at the given pathname.
Enumeration<URL>	getResources(String pathname) Gets all resource URLs corresponding to the given pathname.
String	toString() Creates a human-readable representation of this registry.

Methods inherited from class java.lang.Object

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

Constructor Detail

JarRegistry

public JarRegistry(JarFile jf)
            throws IOException

Default constructor.

Throws:

IOException - when something goes awry.

JarRegistry

public JarRegistry(JarInputStream jis)
            throws IOException

Alternate constructor.

Throws:

IOException - when something goes awry.

JarRegistry

protected JarRegistry(Map<String,byte[]> dataMap)

Internal constructor.

Method Detail

getDataMap

public Map<String,byte[]> getDataMap()

Gets the Map of resource pathnames to byte arrays.

getResource

public URL getResource(String pathname)

Description copied from interface: ResourceRegistry

Gets a resource URL corresponding to the given pathname.

Specified by:

getResource in interface ResourceRegistry

Parameters:

pathname - the resource pathname.

Returns:

a resource URL or null if not found.

getResources

public Enumeration<URL> getResources(String pathname)

Description copied from interface: ResourceRegistry

Gets all resource URLs corresponding to the given pathname.

Specified by:

getResources in interface ResourceRegistry

Parameters:

pathname - the resource pathname.

Returns:

an Enumeration of resource URLs.

getResourceAsStream

public InputStream getResourceAsStream(String pathname)

Description copied from interface: ResourceRegistry

Gets an InputStream to the resource at the given pathname.

Specified by:

getResourceAsStream in interface ResourceRegistry

Parameters:

pathname - the resource pathname.

Returns:

an InputStream to the resource or null if not found.

toString

public String toString()

Creates a human-readable representation of this registry.

Overrides:

toString in class Object

createDataMap

protected static final Map<String,byte[]> createDataMap(JarInputStream jis)
                                                 throws IOException

Creates a mapping of pathnames to data from a JarInputStream.

Throws:

IOException - when something goes awry.

createDataMap

protected static final Map<String,byte[]> createDataMap(JarFile jf)
                                                 throws IOException

Creates a mapping of pathnames to data from a JarFile.

Throws:

IOException - when something goes awry.