Package com.tangosol.util

Class Listeners

java.lang.Object

com.tangosol.util.Base

com.tangosol.util.Listeners

All Implemented Interfaces:

Serializable

public class Listeners
extends Base
implements Serializable

Provide a simple, efficient, and thread-safe implementation of a list of event listeners. The implementation is optimized based on the assumption that listeners are added and removed relatively rarely, and that the list of listeners is requested relatively often. Thread safety is implemented by synchronizing on all methods that modify any data member of the class. Read-only methods are not synchronized.

Version:

1.00, 11/16/97

Author:

Cameron Purdy

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.tangosol.util.Base

Base.LoggingWriter

Field Summary

Fields inherited from class com.tangosol.util.Base

LOG_ALWAYS, LOG_CONFIG, LOG_DEBUG, LOG_ERR, LOG_INFO, LOG_MAX, LOG_MIN, LOG_QUIET, LOG_WARN, POWER_0, POWER_G, POWER_K, POWER_M, POWER_T, UNIT_D, UNIT_H, UNIT_M, UNIT_MS, UNIT_NS, UNIT_S, UNIT_US

Constructor Summary

Constructors

Constructor	Description
Listeners()	Default constructor.

Method Summary

Modifier and Type	Method	Description
void	add(EventListener listener)	Add a listener.
void	addAll(Listeners listeners)	Add all listeners from another Listeners object.
boolean	contains(EventListener listener)	Check if a listener is in the list of listeners.
EventListener[]	getAsynchronousListeners()	Get the array of asynchronous event listeners.
Filter[]	getFilters()	Return the array of filters associated with this Listeners object.
String	getListenerClassNames()	Return a comma separated list of the listener class names.
int	getListenerCount()	Returns the number of listeners.
EventListener[]	getSynchronousListeners()	Get the array of synchronous event listeners.
boolean	isEmpty()	Check if there are no listeners.
EventListener[]	listeners()	Get the array of event listeners.
void	remove(EventListener listener)	Remove a listener.
void	removeAll()	Remove all listeners.
void	setFilters(Filter[] aFilter)	Set the array of filters associated with this Listeners object.
String	toString()	Return a string representation of the Listeners object.

Methods inherited from class com.tangosol.util.Base

azzert, azzert, azzert, azzertFailed, breakLines, breakLines, capitalize, checkNotEmpty, checkNotNull, checkRange, computeSafeWaitTime, decimalValue, dup, dup, ensureBigDecimal, ensureClassLoader, ensureRuntimeException, ensureRuntimeException, equals, equalsDeep, err, err, err, err, err, escape, formatDateTime, getCallerStackFrame, getCommonMonitor, getCommonMonitor, getCommonMonitor, getContextClassLoader, getContextClassLoader, getDeepMessage, getErr, getLastSafeTimeMillis, getLog, getMaxDecDigits, getMaxHexDigits, getOriginalException, getOut, getProcessRandom, getRandom, getRandomBinary, getRandomBinary, getRandomString, getSafeTimeMillis, getStackFrame, getStackFrames, getStackTrace, getStackTrace, getStackTrace, getThreadFactory, getTimeZone, getUpTimeMillis, hashCode, hexValue, indentString, indentString, isDecimal, isHex, isLogEcho, isOctal, log, log, log, log, log, makeInteger, makeLong, makeThread, mergeArray, mergeBooleanArray, mergeByteArray, mergeCharArray, mergeDoubleArray, mergeFloatArray, mergeIntArray, mergeLongArray, mod, mod, octalValue, out, out, out, out, out, pad, parseBandwidth, parseBandwidth, parseDelimitedString, parseHex, parseHex, parseMemorySize, parseMemorySize, parsePercentage, parseTime, parseTime, parseTimeNanos, parseTimeNanos, printStackTrace, randomize, randomize, randomize, randomize, read, read, read, read, read, read, read, replace, setErr, setLog, setLogEcho, setOut, sleep, toBandwidthString, toBandwidthString, toCharEscape, toCrc, toCrc, toCrc, toCrc, toCrc, toDecString, toDelimitedString, toDelimitedString, toDelimitedString, toDelimitedString, toHex, toHex, toHexDump, toHexEscape, toHexEscape, toHexEscape, toHexEscape, toHexString, toMemorySizeString, toMemorySizeString, toQuotedCharEscape, toQuotedStringEscape, toSqlString, toString, toString, toStringEscape, toUnicodeEscape, trace, trace, trace, trace, trace, trace, trace, trace, trace, truncateString, truncateString, wait

Methods inherited from class java.lang.Object

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

Constructor Details

Listeners

public Listeners()

Default constructor.

Method Details

add

public void add(EventListener listener)

Add a listener.

Parameters:

listener - the EventListener to add

remove

public void remove(EventListener listener)

Remove a listener.

Parameters:

listener - the EventListener to remove

addAll

public void addAll(Listeners listeners)

Add all listeners from another Listeners object.

Parameters:

listeners - the Listeners to add

removeAll

public void removeAll()

Remove all listeners.

isEmpty

public boolean isEmpty()

Check if there are no listeners.

Returns:

true if there are no listeners

getListenerCount

public int getListenerCount()

Returns the number of listeners.

Returns:

the number of listeners

contains

public boolean contains(EventListener listener)

Check if a listener is in the list of listeners.

Parameters:

listener - the EventListener to search for

Returns:

true if the listener is in the list of listeners

listeners

public EventListener[] listeners()

Get the array of event listeners. It is illegal to modify the return value from this method.

Returns:

the array of event listeners

getListenerClassNames

public String getListenerClassNames()

Return a comma separated list of the listener class names.

Returns:

a comma separated list of the listener class names

getAsynchronousListeners

public EventListener[] getAsynchronousListeners()

Get the array of asynchronous event listeners. It is illegal to modify the return value from this method.

Returns:

the array of asynchronous event listeners

getSynchronousListeners

public EventListener[] getSynchronousListeners()

Get the array of synchronous event listeners. It is illegal to modify the return value from this method.

Returns:

the array of synchronous event listeners

setFilters

public void setFilters(Filter[] aFilter)

Set the array of filters associated with this Listeners object.

Parameters:

aFilter - the array of associated filters

getFilters

public Filter[] getFilters()

Return the array of filters associated with this Listeners object.

Returns:

the array of filters associated with this Listeners object

toString

public String toString()

Return a string representation of the Listeners object.

Overrides:

toString in class Object

Returns:

a string representation of the Listeners object