Package com.zaxxer.hikari.util

Class UtilityElf

java.lang.Object

com.zaxxer.hikari.util.UtilityElf

public final class UtilityElf
extends Object

Author:

Brett Wooldridge

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	UtilityElf.DefaultThreadFactory

Constructor Summary

Constructors

Constructor	Description
UtilityElf()

Method Summary

Modifier and Type	Method	Description
static <T> T	createInstance(String className, Class<T> clazz, Object... args)	Create and instance of the specified class using the constructor matching the specified arguments.
static ThreadPoolExecutor	createThreadPoolExecutor(int queueSize, String threadName, ThreadFactory threadFactory, RejectedExecutionHandler policy)	Create a ThreadPoolExecutor.
static ThreadPoolExecutor	createThreadPoolExecutor(BlockingQueue<Runnable> queue, String threadName, ThreadFactory threadFactory, RejectedExecutionHandler policy)	Create a ThreadPoolExecutor.
static String	getNullIfEmpty(String text)
static int	getTransactionIsolation(String transactionIsolationName)	Get the int value of a transaction isolation level by name.
static void	quietlySleep(long millis)	Sleep and suppress InterruptedException (but re-signal it).

Methods inherited from class java.lang.Object

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

Constructor Detail

UtilityElf

public UtilityElf()

Method Detail

getNullIfEmpty

public static String getNullIfEmpty(String text)

Returns:

null if string is null or empty

quietlySleep

public static void quietlySleep(long millis)

Sleep and suppress InterruptedException (but re-signal it).

Parameters:

millis - the number of milliseconds to sleep

createInstance

public static <T> T createInstance(String className,
                                   Class<T> clazz,
                                   Object... args)

Create and instance of the specified class using the constructor matching the specified arguments.

Type Parameters:

T - the class type

Parameters:

className - the name of the class to instantiate

clazz - a class to cast the result as

args - arguments to a constructor

Returns:

an instance of the specified class

createThreadPoolExecutor

public static ThreadPoolExecutor createThreadPoolExecutor(int queueSize,
                                                          String threadName,
                                                          ThreadFactory threadFactory,
                                                          RejectedExecutionHandler policy)

Create a ThreadPoolExecutor.

Parameters:

queueSize - the queue size

threadName - the thread name

threadFactory - an optional ThreadFactory

policy - the RejectedExecutionHandler policy

Returns:

a ThreadPoolExecutor

createThreadPoolExecutor

public static ThreadPoolExecutor createThreadPoolExecutor(BlockingQueue<Runnable> queue,
                                                          String threadName,
                                                          ThreadFactory threadFactory,
                                                          RejectedExecutionHandler policy)

Create a ThreadPoolExecutor.

Parameters:

queue - the BlockingQueue to use

threadName - the thread name

threadFactory - an optional ThreadFactory

policy - the RejectedExecutionHandler policy

Returns:

a ThreadPoolExecutor

getTransactionIsolation

public static int getTransactionIsolation(String transactionIsolationName)

Get the int value of a transaction isolation level by name.

Parameters:

transactionIsolationName - the name of the transaction isolation level

Returns:

the int value of the isolation level or -1