cn.sissors.hummingbird.runtime.namespace

Class NameManager

java.lang.Object

cn.sissors.hummingbird.runtime.namespace.NameManager

public class NameManager
extends Object

NameManager provides a tool to generate names used for system. This can ensure no duplicate name appearing at one time period.

But, to ensure performance, duplicate checking will run MAX_CHECKING_ROUND times at max. After MAX_CHECKING_ROUND times re-generation, NameManager will always return a response, even there still exists a duplicate name already. And, if so, the new name will replace the old one.

Version:

2018-10-23

Author:

zyz

Constructor Summary

Constructors

Constructor and Description
NameManager()

Method Summary

Modifier and Type	Method and Description
static void	MAX_LOOP_ROUND(long MAX_CHECKING_ROUND) Set the round of duplicate checking.
static void	release(String name) Release the name under DEFAULT_NAMESPACE after using.
static void	release(String namespace, String name) Release the name under namespace after using.
static void	UNIQUE_NAME_LENGTH(int UNIQUE_NAME_LENGTH) Set the length of random name.
static String	uniqueName() Generate a unique name under DEFAULT_NAMESPACE.
static String	uniqueName(String namespace) Generate a unique name under namespace

Methods inherited from class java.lang.Object

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

Constructor Detail

NameManager

public NameManager()

Method Detail

UNIQUE_NAME_LENGTH

public static void UNIQUE_NAME_LENGTH(int UNIQUE_NAME_LENGTH)

Set the length of random name.

To ensure no duplicate name existing, you can set the length to a big integer.

Parameters:

UNIQUE_NAME_LENGTH - the length of random name

MAX_LOOP_ROUND

public static void MAX_LOOP_ROUND(long MAX_CHECKING_ROUND)

Set the round of duplicate checking.

To ensure no duplicate name existing, you can set the round to a big integer. But too many rounds would go against performance.

Parameters:

MAX_CHECKING_ROUND - the number of checking round

uniqueName

public static String uniqueName()

Generate a unique name under DEFAULT_NAMESPACE.

Returns:

a unique name under DEFAULT_NAMESPACE

uniqueName

public static String uniqueName(String namespace)

Generate a unique name under namespace

Parameters:

namespace - namespace

Returns:

a unique name under namespace

release

public static void release(String name)

Release the name under DEFAULT_NAMESPACE after using.

Parameters:

name - name to release

release

public static void release(String namespace,
                           String name)

Release the name under namespace after using.

Parameters:

namespace - namespace that name belongs to

name - name to release