Package org.apache.xmlgraphics.util

Class ClasspathResource

java.lang.Object

org.apache.xmlgraphics.util.ClasspathResource

public final class ClasspathResource
extends java.lang.Object

A class to find resources in the classpath by their mime-type specified in the MANIFEST.

This class searches for content entries in all META-INF/MANIFEST.MF files. It will find files with a given Content-Type: attribute. This allows to add arbitrary resources by content-type just by creating a JAR wrapper and adding them to the classpath.

Example:

 Name: test.txt
 Content-Type: text/plain
 

Field Summary

Fields

Modifier and Type	Field	Description
private static ClasspathResource	classpathResource
private static java.lang.String	CONTENT_TYPE_KEY
private java.util.Map	contentMappings	Actual Type: Map<String,List<URL>>.
private static java.lang.String	MANIFEST_PATH

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ClasspathResource()

Method Summary

Modifier and Type	Method	Description
private void	addToMapping(java.lang.String contentType, java.lang.String name, java.lang.ClassLoader classLoader)
private java.util.Set	getClassLoadersForResources()
static ClasspathResource	getInstance()	Retrieve the singleton instance of this class.
java.util.List	listResourcesOfMimeType(java.lang.String mimeType)	Retrieve a list of resources known to have the given mime-type.
private void	loadManifests()

Methods inherited from class java.lang.Object

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

Field Detail

contentMappings

private final java.util.Map contentMappings

Actual Type: Map<String,List<URL>>.

MANIFEST_PATH

private static final java.lang.String MANIFEST_PATH

See Also:

Constant Field Values

CONTENT_TYPE_KEY

private static final java.lang.String CONTENT_TYPE_KEY

See Also:

Constant Field Values

classpathResource

private static ClasspathResource classpathResource

Constructor Detail

ClasspathResource

private ClasspathResource()

Method Detail

getInstance

public static ClasspathResource getInstance()

Retrieve the singleton instance of this class.

Returns:

the ClassPathResource instance.

getClassLoadersForResources

private java.util.Set getClassLoadersForResources()

loadManifests

private void loadManifests()

addToMapping

private void addToMapping(java.lang.String contentType,
                          java.lang.String name,
                          java.lang.ClassLoader classLoader)

listResourcesOfMimeType

public java.util.List listResourcesOfMimeType(java.lang.String mimeType)

Retrieve a list of resources known to have the given mime-type.

Parameters:

mimeType - the mime-type to search for.

Returns:

a List<URL>, guaranteed to be != null.