net.sf.farrago.type.runtime
Class EncodedCharPointer

java.lang.Object
  java.io.InputStream
      java.io.ByteArrayInputStream
          net.sf.farrago.type.runtime.BytePointer
              net.sf.farrago.type.runtime.EncodedCharPointer

All Implemented Interfaces:

Closeable, CharSequence, AssignableValue, DataValue

Direct Known Subclasses:

Ucs2CharPointer

public abstract class EncodedCharPointer
extends BytePointer

EncodedCharPointer specializes BytePointer to interpret its bytes as characters encoded via a given charset.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/type/runtime/EncodedCharPointer.java#14 $

Author:

John V. Sichi

Field Summary

Fields inherited from class net.sf.farrago.type.runtime.BytePointer

CONCAT_METHOD_NAME, emptyBytes, ENFORCE_PRECISION_METHOD_NAME, GET_BYTE_COUNT_METHOD_NAME, INITCAP_METHOD_NAME, L1, LOWER_METHOD_NAME, OVERLAY_METHOD_NAME, ownBytes, POSITION_METHOD_NAME, S1, SET_POINTER_METHOD_NAME, SUBSTRING_METHOD_NAME, TRIM_METHOD_NAME, UPPER_METHOD_NAME

Fields inherited from class java.io.ByteArrayInputStream

buf, count, mark, pos

Fields inherited from interface net.sf.farrago.type.runtime.AssignableValue

ASSIGNMENT_METHOD_NAME

Constructor Summary

EncodedCharPointer()

Method Summary

protected byte[]	getBytesForString(String string) Gets the byte representation of a string.
protected abstract String	getCharsetName()
Object	getNullableData()
String	toString()

Methods inherited from class net.sf.farrago.type.runtime.BytePointer

allocateOwnBytes, allocateOwnBytesForPrecision, assignFrom, attemptFastAsciiByteToLong, calcSubstringPointers, cast, cast, cast, cast, cast, charAt, compareBytes, concat, copyFrom, enforceBytePrecision, finishOverlay, getByteCount, getByteCountForPrecision, initcap, isNull, length, lower, overlay, position, positionImpl, setCharAt, setNull, setPointer, subSequence, substring, trim, upper, writeToBuffer, writeToBufferAbsolute

Methods inherited from class java.io.ByteArrayInputStream

available, close, mark, markSupported, read, read, reset, skip

Methods inherited from class java.io.InputStream

read

Methods inherited from class java.lang.Object

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

Constructor Detail

EncodedCharPointer

public EncodedCharPointer()

Method Detail

toString

public String toString()

Specified by:

toString in interface CharSequence

Overrides:

toString in class BytePointer

getCharsetName

protected abstract String getCharsetName()

Overrides:

getCharsetName in class BytePointer

Returns:

the charset used for this pointer's encoding, or BINARY if no character data is encoded

getBytesForString

protected byte[] getBytesForString(String string)

Description copied from class: BytePointer

Gets the byte representation of a string. Subclasses may override.

Overrides:

getBytesForString in class BytePointer

Parameters:

string - source

Returns:

byte representation

getNullableData

public Object getNullableData()

Specified by:

getNullableData in interface DataValue

Overrides:

getNullableData in class BytePointer

Returns:

an Object representation of this value's data, or null if this value is null