Package org.apache.derby.impl.drda

Class 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.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      (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

        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,
                                     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.