Package org.eclipse.jetty.util.resource

Class ResourceCollection

java.lang.Object

org.eclipse.jetty.util.resource.Resource

org.eclipse.jetty.util.resource.ResourceCollection

All Implemented Interfaces:

Closeable, AutoCloseable, ResourceFactory

public class ResourceCollection
extends Resource

A collection of resources (dirs). Allows webapps to have multiple (static) sources. The first resource in the collection is the main resource. If a resource is not found in the main resource, it looks it up in the order the resources were constructed.

Field Summary

Fields inherited from class org.eclipse.jetty.util.resource.Resource

__defaultUseCaches

Constructor Summary

Constructors

Constructor	Description
ResourceCollection()	Instantiates an empty resource collection.
ResourceCollection(String csvResources)	Instantiates a new resource collection.
ResourceCollection(String[] resources)	Instantiates a new resource collection.
ResourceCollection(Collection<Resource> resources)	Instantiates a new resource collection.
ResourceCollection(Resource... resources)	Instantiates a new resource collection.

Method Summary

Modifier and Type	Method	Description
Resource	addPath(String path)	Add a path to the resource collection.
void	close()	Release any temporary resources held by the resource.
void	copyTo(File destination)	Copy the Resource to the new destination file.
boolean	delete()	Deletes the given resource
boolean	exists()
File	getFile()	File representing the given resource.
InputStream	getInputStream()	Input stream to the resource
String	getName()	The name of the resource.
ReadableByteChannel	getReadableByteChannel()	Readable ByteChannel for the resource.
List<Resource>	getResources()	Retrieves the resource collection's resources.
URI	getURI()	URI representing the resource.
boolean	isContainedIn(Resource r)
boolean	isDirectory()
long	lastModified()	Time resource was last modified.
long	length()	Length of the resource.
String[]	list()	list of resource names contained in the given resource.
boolean	renameTo(Resource dest)	Rename the given resource
void	setResources(String resources)	Sets the resources as string of comma-separated values.
void	setResources(List<Resource> res)	Sets the resource collection's resources.
void	setResources(Resource[] resources)	Sets the resource collection's resources.
String	toString()

Methods inherited from class org.eclipse.jetty.util.resource.Resource

fromList, fromList, getAlias, getAllResources, getAssociate, getDefaultUseCaches, getListHTML, getResource, getWeakETag, getWeakETag, isAlias, isContainedIn, isSame, newClassPathResource, newClassPathResource, newResource, newResource, newResource, newResource, newResource, newResource, newSystemResource, resolveAlias, setAssociate, setDefaultUseCaches, toURL

Methods inherited from class java.lang.Object

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

Constructor Details

ResourceCollection

public ResourceCollection()

Instantiates an empty resource collection.

This constructor is used when configuring jetty-maven-plugin.

ResourceCollection

public ResourceCollection(Resource... resources)

Instantiates a new resource collection.

Parameters:

resources - the resources to be added to collection

ResourceCollection

public ResourceCollection(Collection<Resource> resources)

Instantiates a new resource collection.

Parameters:

resources - the resources to be added to collection

ResourceCollection

public ResourceCollection(String[] resources)

Instantiates a new resource collection.

Parameters:

resources - the resource strings to be added to collection

ResourceCollection

public ResourceCollection(String csvResources)
                   throws IOException

Instantiates a new resource collection.

Parameters:

csvResources - the string containing comma-separated resource strings

Throws:

IOException - if any listed resource is not valid

Method Details

getResources

public List<Resource> getResources()

Retrieves the resource collection's resources.

Returns:

the resource collection

setResources

public void setResources(List<Resource> res)

Sets the resource collection's resources.

Parameters:

res - the resources to set

setResources

public void setResources(Resource[] resources)

Sets the resource collection's resources.

Parameters:

resources - the new resource array

setResources

public void setResources(String resources)
                  throws IOException

Sets the resources as string of comma-separated values. This method should be used when configuring jetty-maven-plugin.

Parameters:

resources - the comma-separated string containing one or more resource strings.

Throws:

IOException - if unable resource declared is not valid

See Also:

• Resource.fromList(String, boolean)

addPath

public Resource addPath(String path)
                 throws IOException

Add a path to the resource collection.

Specified by:

addPath in class Resource

Parameters:

path - The path segment to add

Returns:

The resulting resource(s) :

• is a file that exists in at least one of the collection, then the first one found is returned
• is a directory that exists in at exactly one of the collection, then that directory resource is returned
• is a directory that exists in several of the collection, then a ResourceCollection of those directories is returned
• do not exist in any of the collection, then a new non existent resource relative to the first in the collection is returned.

Throws:

MalformedURLException - if the resolution of the path fails because the input path parameter is malformed against any of the collection

IOException - if unable to resolve the path

delete

public boolean delete()
               throws SecurityException

Description copied from class: Resource

Deletes the given resource

Specified by:

delete in class Resource

Returns:

true if resource was found and successfully deleted, false if resource didn't exist or was unable to be deleted.

Throws:

SecurityException - if unable to delete due to permissions

exists

public boolean exists()

Specified by:

exists in class Resource

Returns:

true if the represented resource exists.

getFile

public File getFile()
             throws IOException

Description copied from class: Resource

File representing the given resource.

Specified by:

getFile in class Resource

Returns:

an File representing the given resource or NULL if this is not possible.

Throws:

IOException - if unable to get the resource due to permissions

getInputStream

public InputStream getInputStream()
                           throws IOException

Description copied from class: Resource

Input stream to the resource

Specified by:

getInputStream in class Resource

Returns:

an input stream to the resource

Throws:

IOException - if unable to open the input stream

getReadableByteChannel

public ReadableByteChannel getReadableByteChannel()
                                           throws IOException

Description copied from class: Resource

Readable ByteChannel for the resource.

Specified by:

getReadableByteChannel in class Resource

Returns:

an readable bytechannel to the resource or null if one is not available.

Throws:

IOException - if unable to open the readable bytechannel for the resource.

getName

public String getName()

Description copied from class: Resource

The name of the resource.

Specified by:

getName in class Resource

Returns:

the name of the resource

getURI

public URI getURI()

Description copied from class: Resource

URI representing the resource.

Specified by:

getURI in class Resource

Returns:

an URI representing the given resource

isDirectory

public boolean isDirectory()

Specified by:

isDirectory in class Resource

Returns:

true if the represented resource is a container/directory.

lastModified

public long lastModified()

Description copied from class: Resource

Time resource was last modified.

Specified by:

lastModified in class Resource

Returns:

the last modified time as milliseconds since unix epoch

length

public long length()

Description copied from class: Resource

Length of the resource.

Specified by:

length in class Resource

Returns:

the length of the resource

list

public String[] list()

Description copied from class: Resource

list of resource names contained in the given resource. Ordering is unspecified, so callers may wish to sort the return value to ensure deterministic behavior.

Specified by:

list in class Resource

Returns:

The list of resource names(merged) contained in the collection of resources.

close

public void close()

Description copied from class: Resource

Release any temporary resources held by the resource.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in class Resource

renameTo

public boolean renameTo(Resource dest)
                 throws SecurityException

Description copied from class: Resource

Rename the given resource

Specified by:

renameTo in class Resource

Parameters:

dest - the destination name for the resource

Returns:

true if the resource was renamed, false if the resource didn't exist or was unable to be renamed.

Throws:

SecurityException - if unable to rename due to permissions

copyTo

public void copyTo(File destination)
            throws IOException

Description copied from class: Resource

Copy the Resource to the new destination file.

Will not replace existing destination file.

Overrides:

copyTo in class Resource

Parameters:

destination - the destination file to create

Throws:

IOException - if unable to copy the resource

toString

public String toString()

Overrides:

toString in class Object

Returns:

the list of resources separated by a path separator

isContainedIn

public boolean isContainedIn(Resource r)

Specified by:

isContainedIn in class Resource