org.apache.catalina

Interface WebResourceSet

All Superinterfaces:

Lifecycle

All Known Implementing Classes:

AbstractArchiveResourceSet, AbstractFileResourceSet, AbstractResourceSet, DirResourceSet, EmptyResourceSet, FileResourceSet, JarResourceSet, JarWarResourceSet

public interface WebResourceSet
extends Lifecycle

Represents a set of resources that are part of a web application. Examples include a directory structure, a resources JAR and a WAR file.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.catalina.Lifecycle

Lifecycle.SingleUse

Field Summary

Fields inherited from interface org.apache.catalina.Lifecycle

AFTER_DESTROY_EVENT, AFTER_INIT_EVENT, AFTER_START_EVENT, AFTER_STOP_EVENT, BEFORE_DESTROY_EVENT, BEFORE_INIT_EVENT, BEFORE_START_EVENT, BEFORE_STOP_EVENT, CONFIGURE_START_EVENT, CONFIGURE_STOP_EVENT, PERIODIC_EVENT, START_EVENT, STOP_EVENT

Method Summary

Modifier and Type	Method and Description
void	gc() Implementations may cache some information to improve performance.
URL	getBaseUrl() Obtain the base URL for this set of resources.
boolean	getClassLoaderOnly() Should resources returned by this resource set only be included in any results when the lookup is explicitly looking for class loader resources.
WebResource	getResource(String path) Obtain the object that represents the resource at the given path.
boolean	getStaticOnly() Should resources returned by this resource set only be included in any results when the lookup is explicitly looking for static (non-class loader) resources. i.e. should these resources be excluded from look ups that are explicitly looking for class loader resources.
boolean	isReadOnly() Obtains the current value of the read-only setting for this set of resources.
String[]	list(String path) Obtain the list of the names of all of the files and directories located in the specified directory.
Set<String>	listWebAppPaths(String path) Obtain the Set of the web applications pathnames of all of the files and directories located in the specified directory.
boolean	mkdir(String path) Create a new directory at the given path.
void	setClassLoaderOnly(boolean classLoaderOnly)
void	setReadOnly(boolean readOnly) Configures whether or not this set of resources is read-only.
void	setRoot(WebResourceRoot root)
void	setStaticOnly(boolean staticOnly)
boolean	write(String path, InputStream is, boolean overwrite) Create a new resource at the requested path using the provided InputStream.

Methods inherited from interface org.apache.catalina.Lifecycle

addLifecycleListener, destroy, findLifecycleListeners, getState, getStateName, init, removeLifecycleListener, start, stop

Method Detail

getResource

WebResource getResource(String path)

Obtain the object that represents the resource at the given path. Note the resource at that path may not exist.

Parameters:

path - The path for the resource of interest relative to the root of the web application. It must start with '/'.

Returns:

The object that represents the resource at the given path

list

String[] list(String path)

Obtain the list of the names of all of the files and directories located in the specified directory.

Parameters:

path - The path for the resource of interest relative to the root of the web application. It must start with '/'.

Returns:

The list of resources. If path does not refer to a directory then a zero length array will be returned.

listWebAppPaths

Set<String> listWebAppPaths(String path)

Obtain the Set of the web applications pathnames of all of the files and directories located in the specified directory. Paths representing directories will end with a "/" character.

Parameters:

path - The path for the resource of interest relative to the root of the web application. It must start with '/'.

Returns:

The Set of resources. If path does not refer to a directory then an empty set will be returned.

mkdir

boolean mkdir(String path)

Create a new directory at the given path.

Parameters:

path - The path for the new resource to create relative to the root of the web application. It must start with '/'.

Returns:

true if the directory was created, otherwise false

write

boolean write(String path,
              InputStream is,
              boolean overwrite)

Create a new resource at the requested path using the provided InputStream.

Parameters:

path - The path to be used for the new Resource. It is relative to the root of the web application and must start with '/'.

is - The InputStream that will provide the content for the new Resource.

overwrite - If true and the resource already exists it will be overwritten. If false and the resource already exists the write will fail.

Returns:

true if and only if the new Resource is written

setRoot

void setRoot(WebResourceRoot root)

getClassLoaderOnly

boolean getClassLoaderOnly()

Should resources returned by this resource set only be included in any results when the lookup is explicitly looking for class loader resources. i.e. should these resources be excluded from look ups that are explicitly looking for static (non-class loader) resources.

Returns:

true if these resources should only be used for class loader resource lookups, otherwise false

setClassLoaderOnly

void setClassLoaderOnly(boolean classLoaderOnly)

getStaticOnly

boolean getStaticOnly()

Should resources returned by this resource set only be included in any results when the lookup is explicitly looking for static (non-class loader) resources. i.e. should these resources be excluded from look ups that are explicitly looking for class loader resources.

Returns:

true if these resources should only be used for static (non-class loader) resource lookups, otherwise false

setStaticOnly

void setStaticOnly(boolean staticOnly)

getBaseUrl

URL getBaseUrl()

Obtain the base URL for this set of resources. One of the uses of this is to grant read permissions to the resources when running under a security manager.

Returns:

The base URL for this set of resources

setReadOnly

void setReadOnly(boolean readOnly)

Configures whether or not this set of resources is read-only.

Parameters:

readOnly - true if this set of resources should be configured to be read-only

Throws:

IllegalArgumentException - if an attempt is made to configure a WebResourceSet that is hard-coded to be read-only as writable

isReadOnly

boolean isReadOnly()

Obtains the current value of the read-only setting for this set of resources.

Returns:

true if this set of resources is configured to be read-only, otherwise false

gc

void gc()

Implementations may cache some information to improve performance. This method triggers the clean-up of those resources.