Package org.openhab.core.cache.lru

Class InputStreamCacheWrapper

java.lang.Object

java.io.InputStream

org.openhab.core.cache.lru.InputStreamCacheWrapper

All Implemented Interfaces:

Closeable, AutoCloseable

@NonNullByDefault
public class InputStreamCacheWrapper
extends InputStream

Each cache result instance can handle several InputStreams. This class is a wrapper for such functionality and can ask the cached entry for data, allowing concurrent access to the source even if it is currently actively read from the supplier service. This class implements the two main read methods (byte by byte, and with an array)

Author:

Gwendal Roulleau - Initial contribution

Constructor Summary

Constructors

Constructor	Description
InputStreamCacheWrapper(LRUMediaCacheEntry<?> cacheEntry)	Construct a transparent InputStream wrapper around data from the cache.

Method Summary

Modifier and Type	Method	Description
int	available()
void	close()
InputStream	getClonedStream()
long	length()
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(byte @Nullable [] b, int off, int len)
void	reset()
long	skip(long n)

Methods inherited from class java.io.InputStream

nullInputStream, read, readAllBytes, readNBytes, readNBytes, skipNBytes, transferTo

Methods inherited from class java.lang.Object

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

Constructor Details

InputStreamCacheWrapper

public InputStreamCacheWrapper(LRUMediaCacheEntry<?> cacheEntry)

Construct a transparent InputStream wrapper around data from the cache.

Parameters:

cacheEntry - The parent cached LRUMediaCacheEntry

Method Details

available

public int available()
              throws IOException

Overrides:

available in class InputStream

Throws:

IOException

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte @Nullable [] b,
 int off,
 int len)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException

length

public long length()

getClonedStream

public InputStream getClonedStream()
                            throws IOException

Throws:

IOException

mark

public void mark(int readlimit)

Overrides:

mark in class InputStream

reset

public void reset()
           throws IOException

Overrides:

reset in class InputStream

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class InputStream