org.codehaus.groovy.grails.io.support
Class DefaultResourceLoader

java.lang.Object
  org.codehaus.groovy.grails.io.support.DefaultResourceLoader

All Implemented Interfaces:

ResourceLoader

public class DefaultResourceLoader
extends java.lang.Object
implements ResourceLoader

Default implementation of the ResourceLoader interface.

Will return a UrlResource if the location value is a URL, and a ClassPathResource if it is a non-URL path or a "classpath:" pseudo-URL.

Since:

10.03.2004

Field Summary

Fields inherited from interface org.codehaus.groovy.grails.io.support.ResourceLoader

CLASSPATH_URL_PREFIX

Constructor Summary

DefaultResourceLoader()
Create a new DefaultResourceLoader.

DefaultResourceLoader(java.lang.ClassLoader classLoader)
Create a new DefaultResourceLoader.

Method Summary

java.lang.ClassLoader	getClassLoader() Return the ClassLoader to load class path resources with.
static java.lang.ClassLoader	getDefaultClassLoader()
Resource	getResource(java.lang.String location) Return a Resource handle for the specified resource.
protected Resource	getResourceByPath(java.lang.String path) Return a Resource handle for the resource at the given path.
void	setClassLoader(java.lang.ClassLoader classLoader) Specify the ClassLoader to load class path resources with, or null for using the thread context class loader at the time of actual resource access.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultResourceLoader

public DefaultResourceLoader()

Create a new DefaultResourceLoader.

ClassLoader access will happen using the thread context class loader at the time of this ResourceLoader's initialization.

See Also:

Thread.getContextClassLoader()

DefaultResourceLoader

public DefaultResourceLoader(java.lang.ClassLoader classLoader)

Create a new DefaultResourceLoader.

Parameters:

classLoader - the ClassLoader to load class path resources with, or null for using the thread context class loader at the time of actual resource access

Method Detail

getDefaultClassLoader

public static java.lang.ClassLoader getDefaultClassLoader()

setClassLoader

public void setClassLoader(java.lang.ClassLoader classLoader)

Specify the ClassLoader to load class path resources with, or null for using the thread context class loader at the time of actual resource access.

The default is that ClassLoader access will happen using the thread context class loader at the time of this ResourceLoader's initialization.

getClassLoader

public java.lang.ClassLoader getClassLoader()

Return the ClassLoader to load class path resources with.

Specified by:

getClassLoader in interface ResourceLoader

Returns:

the ClassLoader (never null)

getResource

public Resource getResource(java.lang.String location)

Description copied from interface: ResourceLoader

Return a Resource handle for the specified resource. The handle should always be a reusable resource descriptor, allowing for multiple Resource#getInputStream() calls.

• Must support fully qualified URLs, e.g. "file:C:/test.dat".
• Must support classpath pseudo-URLs, e.g. "classpath:test.dat".
• Should support relative file paths, e.g. "WEB-INF/test.dat". (This will be implementation-specific, typically provided by an ApplicationContext implementation.)

Note that a Resource handle does not imply an existing resource; you need to invoke Resource#exists to check for existence.

Specified by:

getResource in interface ResourceLoader

Parameters:

location - the resource location

Returns:

a corresponding Resource handle

See Also:

ResourceLoader.CLASSPATH_URL_PREFIX

getResourceByPath

protected Resource getResourceByPath(java.lang.String path)

Return a Resource handle for the resource at the given path.

The default implementation supports class path locations. This should be appropriate for standalone implementations but can be overridden, e.g. for implementations targeted at a Servlet container.

Parameters:

path - the path to the resource

Returns:

the corresponding Resource handle

See Also:

ClassPathResource