org.postgresql.core

Class Utils

java.lang.Object

org.postgresql.core.Utils

public class Utils
extends java.lang.Object

Collection of utilities used by the protocol-level code.

Constructor Summary

Constructors

Constructor and Description
Utils()

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.StringBuffer	appendEscapedIdentifier(java.lang.StringBuffer sbuf, java.lang.String value) Escape the given identifier value and append it to the string buffer * sbuf.
static java.lang.StringBuffer	appendEscapedLiteral(java.lang.StringBuffer sbuf, java.lang.String value, boolean standardConformingStrings) Escape the given literal value and append it to the string buffer sbuf.
static byte[]	encodeUTF8(java.lang.String str) Encode a string as UTF-8.
static java.lang.String	toHexString(byte[] data) Turn a bytearray into a printable form, representing each byte in hex.

Methods inherited from class java.lang.Object

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

Constructor Detail

Utils

public Utils()

Method Detail

toHexString

public static java.lang.String toHexString(byte[] data)

Turn a bytearray into a printable form, representing each byte in hex.

Parameters:

data - the bytearray to stringize

Returns:

a hex-encoded printable representation of data

encodeUTF8

public static byte[] encodeUTF8(java.lang.String str)

Encode a string as UTF-8.

Parameters:

str - the string to encode

Returns:

the UTF-8 representation of str

appendEscapedLiteral

public static java.lang.StringBuffer appendEscapedLiteral(java.lang.StringBuffer sbuf,
                                          java.lang.String value,
                                          boolean standardConformingStrings)
                                                   throws java.sql.SQLException

Escape the given literal value and append it to the string buffer sbuf. If sbuf is null, a new StringBuffer will be returned. The argument standardConformingStrings defines whether the backend expects standard-conforming string literals or allows backslash escape sequences.

Parameters:

sbuf - the string buffer to append to; or null

value - the string value

standardConformingStrings -

Returns:

the sbuf argument; or a new string buffer for sbuf == null

Throws:

java.sql.SQLException - if the string contains a \0 character

appendEscapedIdentifier

public static java.lang.StringBuffer appendEscapedIdentifier(java.lang.StringBuffer sbuf,
                                             java.lang.String value)
                                                      throws java.sql.SQLException

Escape the given identifier value and append it to the string buffer * sbuf. If sbuf is null, a new StringBuffer will be returned. This method is different from appendEscapedLiteral in that it includes the quoting required for the identifier while appendEscapedLiteral does not.

Parameters:

sbuf - the string buffer to append to; or null

value - the string value

Returns:

the sbuf argument; or a new string buffer for sbuf == null

Throws:

java.sql.SQLException - if the string contains a \0 character