Interface PlexusIoResource

All Superinterfaces:

ContentSupplier, FileInfo, NameSupplier, SizeSupplier

All Known Implementing Classes:

AbstractPlexusIoResource, PlexusIoFileResource, PlexusIoSymlinkResource, PlexusIoURLResource

public interface PlexusIoResource
extends FileInfo, SizeSupplier, ContentSupplier

A resource is a file-like entity. It may be an actual file, an URL, a zip entry, or something like that.

Field Summary

Fields

Modifier and Type	Field	Description
static final long	UNKNOWN_MODIFICATION_DATE	Unknown modification date
static final long	UNKNOWN_RESOURCE_SIZE	Unknown resource size.

Method Summary

Modifier and Type	Method	Description
InputStream	getContents()	Creates an InputStream, which may be used to read the files contents.
long	getLastModified()	Returns the date, when the resource was last modified, if known.
long	getSize()	Returns the resources size, if known.
URL	getURL()	Returns an URL, which may be used to reference the resource, if possible.
boolean	isDirectory()	Returns, whether the FileInfo refers to a directory.
boolean	isExisting()	Returns, whether the resource exists.
boolean	isFile()	Returns, whether the FileInfo refers to a file.

Methods inherited from interface FileInfo

getName, isSymbolicLink

Field Details

UNKNOWN_RESOURCE_SIZE

static final long UNKNOWN_RESOURCE_SIZE

Unknown resource size.

See Also:

• Constant Field Values

UNKNOWN_MODIFICATION_DATE

static final long UNKNOWN_MODIFICATION_DATE

Unknown modification date

See Also:

• Constant Field Values

Method Details

getLastModified

long getLastModified()

Returns the date, when the resource was last modified, if known. Otherwise, returns UNKNOWN_MODIFICATION_DATE.

See Also:

• File.lastModified()

isExisting

boolean isExisting()

Returns, whether the resource exists.

getSize

long getSize()

Returns the resources size, if known. Otherwise returns UNKNOWN_RESOURCE_SIZE.

Specified by:

getSize in interface SizeSupplier

isFile

boolean isFile()

Returns, whether the FileInfo refers to a file.

Specified by:

isFile in interface FileInfo

isDirectory

boolean isDirectory()

Returns, whether the FileInfo refers to a directory.

Specified by:

isDirectory in interface FileInfo

getContents

@Nonnull
InputStream getContents()
                 throws IOException

Creates an InputStream, which may be used to read the files contents. This is useful, if the file selector comes to a decision based on the files contents.

Please note that this InputStream is unbuffered. Clients should wrap this in a BufferedInputStream or attempt reading reasonably large chunks (8K+).

Specified by:

getContents in interface ContentSupplier

Specified by:

getContents in interface FileInfo

Throws:

IOException

getURL

URL getURL()
    throws IOException

Returns an URL, which may be used to reference the resource, if possible.

Returns:

An URL referencing the resource, if possible, or null. In the latter case, you are forced to use getContents().

Throws:

IOException