org.apache.derby.impl.drda
Class EbcdicCcsidManager

java.lang.Object
  org.apache.derby.impl.drda.CcsidManager
      org.apache.derby.impl.drda.EbcdicCcsidManager

 class EbcdicCcsidManager
extends CcsidManager

A concrete implementation of a CcsidMgr used to convert between Java UCS2 and Ebcdic as needed to handle character DDM Parameters. This implementation only supports converting from the ASCII invariant of UNICODE to Ebcdic. This should be fine since this class is intended for converting DDM Parameter data only.

Field Summary

private static int[]	conversionArrayToEbcdic
private static int[]	conversionArrayToUCS2

Fields inherited from class org.apache.derby.impl.drda.CcsidManager

dot, numToCharRepresentation, space, UTF8_CCSID

Constructor Summary

EbcdicCcsidManager()

Method Summary

(package private) byte[]	convertFromJavaString(java.lang.String sourceString)
(package private) void	convertFromJavaString(java.lang.String sourceString, java.nio.ByteBuffer buffer) Convert a Java String into bytes for a particular ccsid.
(package private) java.lang.String	convertToJavaString(byte[] sourceBytes)
(package private) java.lang.String	convertToJavaString(byte[] sourceBytes, int offset, int numToConvert) Convert a byte array representing characters in a particular ccsid into a Java String.
(package private) int	getByteLength(java.lang.String str) Returns the length in bytes for the String str using a particular ccsid.

Methods inherited from class java.lang.Object

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

Field Detail

conversionArrayToEbcdic

private static final int[] conversionArrayToEbcdic

conversionArrayToUCS2

private static final int[] conversionArrayToUCS2

Constructor Detail

EbcdicCcsidManager

EbcdicCcsidManager()

Method Detail

convertFromJavaString

byte[] convertFromJavaString(java.lang.String sourceString)

Specified by:

convertFromJavaString in class CcsidManager

convertFromJavaString

void convertFromJavaString(java.lang.String sourceString,
                           java.nio.ByteBuffer buffer)

Description copied from class: CcsidManager

Convert a Java String into bytes for a particular ccsid. The String is converted into a buffer provided by the caller.

Specified by:

convertFromJavaString in class CcsidManager

Parameters:

sourceString - A Java String to convert.

buffer - The buffer to convert the String into.

convertToJavaString

java.lang.String convertToJavaString(byte[] sourceBytes)

Specified by:

convertToJavaString in class CcsidManager

convertToJavaString

java.lang.String convertToJavaString(byte[] sourceBytes,
                                     int offset,
                                     int numToConvert)

Description copied from class: CcsidManager

Convert a byte array representing characters in a particular ccsid into a Java String. Mind the fact that for certain encodings (e.g. UTF8), the offset and numToConvert actually represent characters and 1 character does not always equal to 1 byte.

Specified by:

convertToJavaString in class CcsidManager

Parameters:

sourceBytes - An array of bytes to be converted.

offset - An offset indicating first byte to convert.

numToConvert - The number of bytes to be converted.

Returns:

A new Java String Object created after conversion.

getByteLength

int getByteLength(java.lang.String str)

Description copied from class: CcsidManager

Returns the length in bytes for the String str using a particular ccsid.

Specified by:

getByteLength in class CcsidManager

Parameters:

str - The Java String from which to obtain the length.

Returns:

The length in bytes of the String str.