org.jboss.shotoku.tools
Class CacheTools

java.lang.Object
  org.jboss.shotoku.tools.CacheTools

public class CacheTools
extends java.lang.Object

Utility, helper functions used internally.

Author:

Adam Warski

Field Summary

static java.lang.String	DEFAULT_CACHE_MONITOR_MBEAN Name of the default RenewableCacheMonitorServiceMBean mbean.
static java.lang.String	DEFAULT_RENEWABLE_CACHE_MBEAN Name of the default RenewableCacheServiceMBean mbean.
static java.lang.String	GENERATED_FQN_BASE The first part of automatically generated fqn-s for cache item nodes.

Constructor Summary

CacheTools()

Method Summary

static int	getNextId()
static java.lang.Object	getService(java.lang.String mbeanName, java.lang.Class<?> c) Gets a reference to an mbean with the given name.
static boolean	isEmpty(java.lang.String s) Checks if the given string is empty (null or "").
static boolean	objectsEqual(java.lang.Object obj1, java.lang.Object obj2) Checks if two objects are equal - either both null, or their equals method returns true.
static java.lang.String	toString(java.lang.Object o) Converts the given object to a String in a null-safe way.
static java.lang.String	toStringNotNull(java.lang.Object o) Converts the given object to a String in a null-safe way.

Methods inherited from class java.lang.Object

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

Field Detail

GENERATED_FQN_BASE

public static final java.lang.String GENERATED_FQN_BASE

The first part of automatically generated fqn-s for cache item nodes.

See Also:

Constant Field Values

DEFAULT_RENEWABLE_CACHE_MBEAN

public static final java.lang.String DEFAULT_RENEWABLE_CACHE_MBEAN

Name of the default RenewableCacheServiceMBean mbean.

See Also:

Constant Field Values

DEFAULT_CACHE_MONITOR_MBEAN

public static final java.lang.String DEFAULT_CACHE_MONITOR_MBEAN

Name of the default RenewableCacheMonitorServiceMBean mbean.

See Also:

Constant Field Values

Constructor Detail

CacheTools

public CacheTools()

Method Detail

getService

public static java.lang.Object getService(java.lang.String mbeanName,
                                          java.lang.Class<?> c)
                                   throws javax.management.MalformedObjectNameException

Gets a reference to an mbean with the given name.

Parameters:

mbeanName - Name of the mbean to get.

c - Class of the mbean to get.

Returns:

A reference to the mbean.

Throws:

javax.management.MalformedObjectNameException

isEmpty

public static boolean isEmpty(java.lang.String s)

Checks if the given string is empty (null or "").

Parameters:

s - String to check.

Returns:

True iff the given string is null or equal to "".

toString

public static java.lang.String toString(java.lang.Object o)

Converts the given object to a String in a null-safe way.

Parameters:

o - Object to convert.

Returns:

Result of o.toString() or null if o is null.

toStringNotNull

public static java.lang.String toStringNotNull(java.lang.Object o)

Converts the given object to a String in a null-safe way. Never returns a null.

Parameters:

o - Object to convert.

Returns:

Result of o.toString() or an emptys tring if o is null.

objectsEqual

public static boolean objectsEqual(java.lang.Object obj1,
                                   java.lang.Object obj2)

Checks if two objects are equal - either both null, or their equals method returns true.

Parameters:

obj1 - First object to compare.

obj2 - Second object to compare.

Returns:

True iff both objects are equal to null or if their equals method returns true.

getNextId

public static int getNextId()

Returns:

Gets a unique integer id.