org.postgresql.core

Class ByteOptimizedUTF8Encoder

java.lang.Object

org.postgresql.core.Encoding

org.postgresql.core.OptimizedUTF8Encoder

org.postgresql.core.ByteOptimizedUTF8Encoder

final class ByteOptimizedUTF8Encoder
extends OptimizedUTF8Encoder

UTF-8 encoder which validates input and is optimized for jdk 9+ where String objects are backed by byte[].

Field Summary

Fields

Modifier and Type	Field and Description
private static java.nio.charset.Charset	ASCII_CHARSET

Fields inherited from class org.postgresql.core.OptimizedUTF8Encoder

UTF_8_CHARSET

Constructor Summary

Constructors

Constructor and Description
ByteOptimizedUTF8Encoder()

Method Summary

Modifier and Type	Method and Description
java.lang.String	decode(byte[] encodedString, int offset, int length) Decode an array of bytes into a string.
private java.lang.String	slowDecode(byte[] encodedString, int offset, int length, int curIdx) Decodes to char[] in presence of non-ascii values after first copying all known ascii chars directly from byte[] to char[].

Methods inherited from class org.postgresql.core.OptimizedUTF8Encoder

charDecode, decodeToChars, getCharArray

Methods inherited from class org.postgresql.core.Encoding

decode, defaultEncoding, encode, getDatabaseEncoding, getDecodingReader, getEncodingWriter, getJVMEncoding, hasAsciiNumbers, name, toString

Methods inherited from class java.lang.Object

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

Field Detail

ASCII_CHARSET

private static final java.nio.charset.Charset ASCII_CHARSET

Constructor Detail

ByteOptimizedUTF8Encoder

ByteOptimizedUTF8Encoder()

Method Detail

decode

public java.lang.String decode(byte[] encodedString,
                               int offset,
                               int length)
                        throws java.io.IOException

Decode an array of bytes into a string.

Overrides:

decode in class Encoding

Parameters:

encodedString - a byte array containing the string to decode

offset - the offset in encodedString of the first byte of the encoded representation

length - the length, in bytes, of the encoded representation

Returns:

the decoded string

Throws:

java.io.IOException - if something goes wrong

slowDecode

private java.lang.String slowDecode(byte[] encodedString,
                                    int offset,
                                    int length,
                                    int curIdx)
                             throws java.io.IOException

Decodes to char[] in presence of non-ascii values after first copying all known ascii chars directly from byte[] to char[].

Throws:

java.io.IOException