Examples of org.apache.avalon.fortress.util.LifecycleExtensionManager$CachedArrayList

org.apache.avalon.fortress.util.LifecycleExtensionManager
CachedArrayList class.
This class wraps a synchronized ArrayList to provide an optimized toArray() method that returns an internally cached array, rather than a new array generated per toArray() invocation.

Use of the class by the Manager results in toArray() being invoked far more often than any other method. Caching the value toArray normally returns is intended to be a performance optimization.

The cached array value is updated upon each write operation to the List.

REVISIT(MC): investigate using FastArrayList from collections ?

    {
        final Logger extLogger = m_loggerManager.getLoggerForCategory( "system.extensions" );


        if ( serviceManager.hasService( LifecycleExtensionManager.ROLE ) )
        {
            final LifecycleExtensionManager parent = (LifecycleExtensionManager)
                    serviceManager.lookup( LifecycleExtensionManager.ROLE );


            if ( extLogger.isDebugEnabled() )
            {
                final String message = "Found the LifecycleExtensionManager, creating a copy.";
                extLogger.debug( message );
            }


            m_extManager = parent.writeableCopy();
        }
        else
        {
            if ( extLogger.isDebugEnabled() )
            {
                final String message = "No LifecycleExtensionManager found, creating a new one.";
                extLogger.debug( message );
            }


            m_extManager = new LifecycleExtensionManager();
        }


        /** LifecycleExtensionManager.writeableCopy() does not copy the logger. */
        m_extManager.enableLogging( extLogger );

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