Apache Tomcat 6.0.39

org.apache.tomcat.util.buf
Class StringCache

java.lang.Object
  extended by org.apache.tomcat.util.buf.StringCache

public class StringCache
extends java.lang.Object

This class implements a String cache for ByteChunk and CharChunk.

Author:
Remy Maucherat

Nested Class Summary
static class StringCache.ByteEntry
           
static class StringCache.CharEntry
           
 
Field Summary
protected static int accessCount
          Access count.
protected static StringCache.ByteEntry[] bcCache
          Cache for byte chunk.
protected static int bcCount
          toString count for byte chunk.
protected static java.util.HashMap bcStats
          Statistics hash map for byte chunk.
protected static boolean byteEnabled
          Enabled ?
protected static int cacheSize
           
protected static StringCache.CharEntry[] ccCache
          Cache for char chunk.
protected static int ccCount
          toString count for char chunk.
protected static java.util.HashMap ccStats
          Statistics hash map for char chunk.
protected static boolean charEnabled
           
protected static int hitCount
          Hit count.
protected static int maxStringSize
           
protected static int trainThreshold
           
 
Constructor Summary
StringCache()
           
 
Method Summary
protected static int compare(ByteChunk name, byte[] compareTo)
          Compare given byte chunk with byte array.
protected static int compare(CharChunk name, char[] compareTo)
          Compare given char chunk with char array.
protected static java.lang.String find(ByteChunk name)
          Find an entry given its name in the cache and return the associated String.
protected static java.lang.String find(CharChunk name)
          Find an entry given its name in the cache and return the associated String.
protected static int findClosest(ByteChunk name, StringCache.ByteEntry[] array, int len)
          Find an entry given its name in a sorted array of map elements.
protected static int findClosest(CharChunk name, StringCache.CharEntry[] array, int len)
          Find an entry given its name in a sorted array of map elements.
 int getAccessCount()
           
 boolean getByteEnabled()
           
 int getCacheSize()
           
 boolean getCharEnabled()
           
 int getHitCount()
           
 int getTrainThreshold()
           
 void reset()
           
 void setByteEnabled(boolean byteEnabled)
           
 void setCacheSize(int cacheSize)
           
 void setCharEnabled(boolean charEnabled)
           
 void setTrainThreshold(int trainThreshold)
           
static java.lang.String toString(ByteChunk bc)
           
static java.lang.String toString(CharChunk cc)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

byteEnabled

protected static boolean byteEnabled
Enabled ?


charEnabled

protected static boolean charEnabled

trainThreshold

protected static int trainThreshold

cacheSize

protected static int cacheSize

maxStringSize

protected static int maxStringSize

bcStats

protected static java.util.HashMap bcStats
Statistics hash map for byte chunk.


bcCount

protected static int bcCount
toString count for byte chunk.


bcCache

protected static StringCache.ByteEntry[] bcCache
Cache for byte chunk.


ccStats

protected static java.util.HashMap ccStats
Statistics hash map for char chunk.


ccCount

protected static int ccCount
toString count for char chunk.


ccCache

protected static StringCache.CharEntry[] ccCache
Cache for char chunk.


accessCount

protected static int accessCount
Access count.


hitCount

protected static int hitCount
Hit count.

Constructor Detail

StringCache

public StringCache()
Method Detail

getCacheSize

public int getCacheSize()
Returns:
Returns the cacheSize.

setCacheSize

public void setCacheSize(int cacheSize)
Parameters:
cacheSize - The cacheSize to set.

getByteEnabled

public boolean getByteEnabled()
Returns:
Returns the enabled.

setByteEnabled

public void setByteEnabled(boolean byteEnabled)
Parameters:
byteEnabled - The enabled to set.

getCharEnabled

public boolean getCharEnabled()
Returns:
Returns the enabled.

setCharEnabled

public void setCharEnabled(boolean charEnabled)
Parameters:
charEnabled - The enabled to set.

getTrainThreshold

public int getTrainThreshold()
Returns:
Returns the trainThreshold.

setTrainThreshold

public void setTrainThreshold(int trainThreshold)
Parameters:
trainThreshold - The trainThreshold to set.

getAccessCount

public int getAccessCount()
Returns:
Returns the accessCount.

getHitCount

public int getHitCount()
Returns:
Returns the hitCount.

reset

public void reset()

toString

public static java.lang.String toString(ByteChunk bc)

toString

public static java.lang.String toString(CharChunk cc)

compare

protected static final int compare(ByteChunk name,
                                   byte[] compareTo)
Compare given byte chunk with byte array. Return -1, 0 or +1 if inferior, equal, or superior to the String.


find

protected static final java.lang.String find(ByteChunk name)
Find an entry given its name in the cache and return the associated String.


findClosest

protected static final int findClosest(ByteChunk name,
                                       StringCache.ByteEntry[] array,
                                       int len)
Find an entry given its name in a sorted array of map elements. This will return the index for the closest inferior or equal item in the given array.


compare

protected static final int compare(CharChunk name,
                                   char[] compareTo)
Compare given char chunk with char array. Return -1, 0 or +1 if inferior, equal, or superior to the String.


find

protected static final java.lang.String find(CharChunk name)
Find an entry given its name in the cache and return the associated String.


findClosest

protected static final int findClosest(CharChunk name,
                                       StringCache.CharEntry[] array,
                                       int len)
Find an entry given its name in a sorted array of map elements. This will return the index for the closest inferior or equal item in the given array.


Apache Tomcat 6.0.39

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