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Class oracle.sql.CharacterWalker
java.lang.Object
|
+----oracle.sql.CharacterWalker
- public final class CharacterWalker
- extends Object
A CharacterWalker lets you walk through the characters that are represented
as a sequence of bytes in some CharacterSet.
A character set determines a 32 bit value for each character.
The values from 0 to 64K are reserved for their Unicode interpretation.
Otherwise the value has no particular
significance.
But values can be used to build up another sequence
with a CharacterBuffer.
- See Also:
- CharacterSet, CharacterBuffer, CHAR
-
CharacterWalker(CharacterSet, byte[], int, int)
- Constructor.
-
hasMoreCharacters()
- Reports whether there are more bytes waiting to be converted.
-
nextCharacter()
- Returns the next character in the sequence and advances the
CharacterWalker over it.
CharacterWalker
public CharacterWalker(CharacterSet charSet,
byte bytes[],
int offset,
int count)
- Constructor.
- Parameters:
- charSet - the CharacterSet to be used in interpreting the bytes.
- bytes - the byte array containing the data to be interpreted.
- index - the index in bytes of the first byte to be interpreted.
- count - the number of bytes to be interpreted.
nextCharacter
public int nextCharacter() throws NoSuchElementException
- Returns the next character in the sequence and advances the
CharacterWalker over it.
- Returns:
- the 32 bit representation of the next character
- Throws: NoSuchElementException
- if the walker has already returned
the last character or the sequence is ill-formed. That is, the
next bytes are somehow not allowed in the given representation
hasMoreCharacters
public boolean hasMoreCharacters()
- Reports whether there are more bytes waiting to be converted.
Note that even if hasMoreCharacters returns true, it's possible for
nextCharacter to throw an exception because the bytes aren't well-formed.
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