org.jboss.modules
Interface ResourceLoader

All Known Implementing Classes:

AbstractResourceLoader

public interface ResourceLoader

A loader for resources from a specific resource root within a module.

Author:

David M. Lloyd

Method Summary

ClassSpec	getClassSpec(String fileName) Get the class specification for the given class name.
String	getLibrary(String name) Get the absolute physical filesystem path for a library with the given name.
PackageSpec	getPackageSpec(String name) Get the package specification for the given directory name.
Collection<String>	getPaths() Get the collection of resource paths.
Resource	getResource(String name) Get a resource with the given name.
String	getRootName() Get the name of the root represented by this resource loader.

Method Detail

getRootName

String getRootName()

Get the name of the root represented by this resource loader.

Returns:

the name of the root

getClassSpec

ClassSpec getClassSpec(String fileName)
                       throws IOException

Get the class specification for the given class name. If no matching class is found, null is returned.

Parameters:

fileName - the fileName of the class, e.g. for the class org.jboss.modules.ResourceLoader the fileName will be org/jboss/modules/ResourceLoader.class

Returns:

the class specification, or null if the named class is not found

Throws:

IOException - if an I/O error occurs

getPackageSpec

PackageSpec getPackageSpec(String name)
                           throws IOException

Get the package specification for the given directory name. Always returns a package specification; this method cannot be used to test for the existence of a package. A package spec should always be acquired from the same resource loader which provided the class specification. The directory name will always be specified using "/" separators.

Parameters:

name - the directory name

Returns:

the package specification

Throws:

IOException - if an I/O error occurs

getResource

Resource getResource(String name)

Get a resource with the given name. If no such resource is available, null is returned. The resource name will always be specified using "/" separators for the directory segments.

Parameters:

name - the resource name

Returns:

the resource, or null if it is not available

getLibrary

String getLibrary(String name)

Get the absolute physical filesystem path for a library with the given name. The resultant path should be path-separated using "/" characters.

Parameters:

name - the name

Returns:

the path or null if the library is not present

getPaths

Collection<String> getPaths()

Get the collection of resource paths. Called one time only when the resource loader is initialized. The paths should use "/" characters to separate the path segments.

Returns:

the resource paths