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com.mysql.jdbc
Class SingleByteCharsetConverter  

java.lang.Object
  com.mysql.jdbc.SingleByteCharsetConverter

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public class SingleByteCharsetConverter

extends java.lang.Object

Converter for char[]->byte[] and byte[]->char[] for single-byte character sets. Much faster (5-6x) than the built-in solution that ships with the JVM, even with JDK-1.4.x and NewIo.

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Field Summary
private static byte[]	allBytes
private static int	BYTE_RANGE
private  char[]	byteToChars
private  byte[]	charToByteMap
private static java.util.Map	CONVERTER_MAP
private static byte[]	EMPTY_BYTE_ARRAY
private static byte[]	unknownCharsMap

 

Constructor Summary
private	SingleByteCharsetConverter(java.lang.String encodingName)           Prevent instantiation, called out of static method initCharset().

 

Method Summary
static SingleByteCharsetConverter	getInstance(java.lang.String encodingName)           Get a converter for the given encoding name
static SingleByteCharsetConverter	initCharset(java.lang.String javaEncodingName)           Initialize the shared instance of a converter for the given character encoding.
byte[]	toBytes(java.lang.String s)           Convert the given string to an array of bytes.
byte[]	toBytes(java.lang.String s, int offset, int length)           Convert the given string to an array of bytes.
java.lang.String	toString(byte[] buffer)           Convert the byte buffer to a string using this instance's character encoding.
java.lang.String	toString(byte[] buffer, int startPos, int length)           Convert the byte buffer from startPos to a length of length to a string using this instance's character encoding.
static java.lang.String	toStringDefaultEncoding(byte[] buffer, int startPos, int length)           Convert the byte buffer from startPos to a length of length to a string using the default platform encoding.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

unknownCharsMap

private static byte[] unknownCharsMap

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BYTE_RANGE

private static final int BYTE_RANGE

See Also:

Constant Field Values

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CONVERTER_MAP

private static final java.util.Map CONVERTER_MAP

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allBytes

private static byte[] allBytes

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byteToChars

private char[] byteToChars

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charToByteMap

private byte[] charToByteMap

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EMPTY_BYTE_ARRAY

private static final byte[] EMPTY_BYTE_ARRAY

Constructor Detail

SingleByteCharsetConverter

private SingleByteCharsetConverter(java.lang.String encodingName)
                            throws java.io.UnsupportedEncodingException

Prevent instantiation, called out of static method initCharset().

Method Detail

getInstance

public static SingleByteCharsetConverter getInstance(java.lang.String encodingName)
                                              throws java.io.UnsupportedEncodingException

Get a converter for the given encoding name

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initCharset

public static SingleByteCharsetConverter initCharset(java.lang.String javaEncodingName)
                                              throws java.io.UnsupportedEncodingException

Initialize the shared instance of a converter for the given character encoding.

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toStringDefaultEncoding

public static java.lang.String toStringDefaultEncoding(byte[] buffer,
                                                       int startPos,
                                                       int length)

Convert the byte buffer from startPos to a length of length to a string using the default platform encoding.

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toBytes

public final byte[] toBytes(java.lang.String s)

Convert the given string to an array of bytes.

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toBytes

public final byte[] toBytes(java.lang.String s,
                            int offset,
                            int length)

Convert the given string to an array of bytes.

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toString

public final java.lang.String toString(byte[] buffer)

Convert the byte buffer to a string using this instance's character encoding.

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toString

public final java.lang.String toString(byte[] buffer,
                                       int startPos,
                                       int length)

Convert the byte buffer from startPos to a length of length to a string using this instance's character encoding.

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