com.mysql.jdbc
Class Util

java.lang.Object
  com.mysql.jdbc.Util

public class Util
extends java.lang.Object

Various utility methods for the driver.

Author:

Mark Matthews

Field Summary

protected static java.lang.reflect.Method

systemNanoTimeMethod

Constructor Summary

Util()

Method Summary

static long	getCurrentTimeNanosOrMillis()
static boolean	interfaceExists(java.lang.String hostname) Does a network interface exist locally with the given hostname?
static boolean	isColdFusion()
protected static boolean	nanoTimeAvailable()
static java.lang.Object	readObject(java.sql.ResultSet resultSet, int index) Given a ResultSet and an index into the columns of that ResultSet, read binary data from the column which represents a serialized object, and re-create the object.
static java.lang.String	scramble(java.lang.String message, java.lang.String password) DOCUMENT ME!
static java.lang.String	stackTraceToString(java.lang.Throwable ex) Converts a nested exception into a nicer message

Methods inherited from class java.lang.Object

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

Field Detail

systemNanoTimeMethod

protected static java.lang.reflect.Method systemNanoTimeMethod

Constructor Detail

Util

public Util()

Method Detail

isColdFusion

public static boolean isColdFusion()

nanoTimeAvailable

protected static boolean nanoTimeAvailable()

readObject

public static java.lang.Object readObject(java.sql.ResultSet resultSet,
                                          int index)
                                   throws java.lang.Exception

Given a ResultSet and an index into the columns of that ResultSet, read binary data from the column which represents a serialized object, and re-create the object.

Parameters:

resultSet - the ResultSet to use.

index - an index into the ResultSet.

Returns:

the object if it can be de-serialized

Throws:

java.lang.Exception - if an error occurs

scramble

public static java.lang.String scramble(java.lang.String message,
                                        java.lang.String password)

DOCUMENT ME!

Parameters:

message - DOCUMENT ME!

password - DOCUMENT ME!

Returns:

DOCUMENT ME!

stackTraceToString

public static java.lang.String stackTraceToString(java.lang.Throwable ex)

Converts a nested exception into a nicer message

Parameters:

ex - the exception to expand into a message.

Returns:

a message containing the exception, the message (if any), and a stacktrace.

interfaceExists

public static boolean interfaceExists(java.lang.String hostname)

Does a network interface exist locally with the given hostname?

Parameters:

hostname - the hostname (or IP address in string form) to check

Returns:

true if it exists, false if no, or unable to determine due to VM version support of java.net.NetworkInterface

getCurrentTimeNanosOrMillis

public static long getCurrentTimeNanosOrMillis()