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## org.apache.tomcat.util.buf
Class StringCache

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

    public class StringCache

extends 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 HashMap<StringCache.ByteEntry,int[]>` | `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 HashMap<StringCache.CharEntry,int[]>` | `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 String` | `find(ByteChunk name)` Find an entry given its name in the cache and return the associated String.
`protected static 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 String` | `toString(ByteChunk bc)`
`static 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 HashMap<StringCache.ByteEntry,int[]> 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 HashMap<StringCache.CharEntry,int[]> 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 String toString(ByteChunk bc)

### toString

    public static 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 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 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.

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