Class MemoryCacheSeekableStream

java.lang.Object

java.io.InputStream

com.twelvemonkeys.io.SeekableInputStream

com.twelvemonkeys.io.AbstractCachedSeekableStream

com.twelvemonkeys.io.MemoryCacheSeekableStream

All Implemented Interfaces:

Seekable, Closeable, AutoCloseable

public final class MemoryCacheSeekableStream
extends AbstractCachedSeekableStream

A SeekableInputStream implementation that caches data in memory.

Version:

$Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/io/MemoryCacheSeekableStream.java#3 $

See Also:

• FileCacheSeekableStream

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static final class	MemoryCacheSeekableStream.MemoryCache

Nested classes/interfaces inherited from class AbstractCachedSeekableStream

AbstractCachedSeekableStream.StreamCache

Field Summary

Fields inherited from class AbstractCachedSeekableStream

stream, streamPosition

Fields inherited from class SeekableInputStream

closed, flushedPosition, markedPositions, position

Constructor Summary

Constructors

Constructor	Description
MemoryCacheSeekableStream(InputStream pStream)	Creates a MemoryCacheSeekableStream, reading from the given InputStream.

Method Summary

Modifier and Type	Method	Description
final boolean	isCachedFile()	Returns true if this Seekable stream caches data itself in order to allow seeking backwards, and the cache is kept in a temporary file.
final boolean	isCachedMemory()	Returns true if this Seekable stream caches data itself in order to allow seeking backwards, and the cache is kept in main memory.

Methods inherited from class AbstractCachedSeekableStream

available, closeImpl, flushBeforeImpl, getCache, isCached, read, read, seekImpl, syncPosition

Methods inherited from class SeekableInputStream

checkOpen, close, finalize, flush, flushBefore, getFlushedPosition, getStreamPosition, mark, mark, markSupported, read, reset, seek, skip

Methods inherited from class InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, skipNBytes, transferTo

Methods inherited from class Object

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

Constructor Details

MemoryCacheSeekableStream

public MemoryCacheSeekableStream(InputStream pStream)

Creates a MemoryCacheSeekableStream, reading from the given InputStream. Data will be cached in memory.

Parameters:

pStream - the InputStream to read from.

Method Details

isCachedMemory

public final boolean isCachedMemory()

Description copied from interface: Seekable

Returns true if this Seekable stream caches data itself in order to allow seeking backwards, and the cache is kept in main memory. Applications may consult this in order to decide how frequently, or whether, to flush in order to conserve cache resources.

Specified by:

isCachedMemory in interface Seekable

Specified by:

isCachedMemory in class AbstractCachedSeekableStream

Returns:

true if this Seekable caches data in main memory.

See Also:

• Seekable.isCached()
• Seekable.isCachedFile()

isCachedFile

public final boolean isCachedFile()

Description copied from interface: Seekable

Returns true if this Seekable stream caches data itself in order to allow seeking backwards, and the cache is kept in a temporary file. Applications may consult this in order to decide how frequently, or whether, to flush in order to conserve cache resources.

Specified by:

isCachedFile in interface Seekable

Specified by:

isCachedFile in class AbstractCachedSeekableStream

Returns:

true if this Seekable caches data in a temporary file.

See Also:

• Seekable.isCached()
• Seekable.isCachedMemory()