edu.wisc.my.webproxy.beans.cache
Class CacheWriter

java.lang.Object
  java.io.Writer
      edu.wisc.my.webproxy.beans.cache.CacheWriter

All Implemented Interfaces:

Closeable, Flushable, Appendable

public class CacheWriter
extends Writer

Caching output stream. Takes a PageCache and the cache parameters along with an output stream to delegate the calls to. When close() is called on this class the bufferend content is written out to the PageCache.

Version:

$Revision: 20993 $

Author:

Eric Dalquist edalquist@unicon.net

Field Summary

Fields inherited from class java.io.Writer

lock

Constructor Summary

CacheWriter(Writer out, CacheEntry entryBase, PageCache cache, String cacheKey, boolean persistData)
Creates a new CacheWriter with the specified delegate stream and caching configuration.

Method Summary

Writer	append(char c)
Writer	append(CharSequence csq)
Writer	append(CharSequence csq, int start, int end)
void	close() Creates and stores a CacheEntry in the PageCache.
void	flush()
void	write(char[] cbuf)
void	write(char[] cbuf, int off, int len)
void	write(int c)
void	write(String str)
void	write(String str, int off, int len)

Methods inherited from class java.lang.Object

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

Constructor Detail

CacheWriter

public CacheWriter(Writer out,
                   CacheEntry entryBase,
                   PageCache cache,
                   String cacheKey,
                   boolean persistData)

Creates a new CacheWriter with the specified delegate stream and caching configuration.

Parameters:

out - The output stream to delegate cache calls to. If null no delegation is performed.

entryBase - The base CacheEntry to store, the content field will be overwritten before caching.

cache - The PageCache to use to store the data, may not be null.

cacheKey - The key to store the data with, may not be null.

persistData - If the data should be persisted by the store.

Method Detail

close

public void close()
           throws IOException

Creates and stores a CacheEntry in the PageCache.

Specified by:

close in interface Closeable

Specified by:

close in class Writer

Throws:

IOException

See Also:

OutputStream.close()

flush

public void flush()
           throws IOException

Specified by:

flush in interface Flushable

Specified by:

flush in class Writer

Throws:

IOException

See Also:

OutputStream.flush()

write

public void write(char[] cbuf,
                  int off,
                  int len)
           throws IOException

Specified by:

write in class Writer

Throws:

IOException

append

public Writer append(char c)
              throws IOException

Specified by:

append in interface Appendable

Overrides:

append in class Writer

Throws:

IOException

append

public Writer append(CharSequence csq,
                     int start,
                     int end)
              throws IOException

Specified by:

append in interface Appendable

Overrides:

append in class Writer

Throws:

IOException

append

public Writer append(CharSequence csq)
              throws IOException

Specified by:

append in interface Appendable

Overrides:

append in class Writer

Throws:

IOException

write

public void write(char[] cbuf)
           throws IOException

Overrides:

write in class Writer

Throws:

IOException

write

public void write(int c)
           throws IOException

Overrides:

write in class Writer

Throws:

IOException

write

public void write(String str,
                  int off,
                  int len)
           throws IOException

Overrides:

write in class Writer

Throws:

IOException

write

public void write(String str)
           throws IOException

Overrides:

write in class Writer

Throws:

IOException