Example usage for org.apache.commons.collections FastArrayList iterator

Introduction

In this page you can find the example usage for org.apache.commons.collections FastArrayList iterator.

Prototype

public Iterator iterator() 

Source Link

Document

Return an iterator over the elements in this list in proper sequence.

Usage

From source file:org.apache.torque.manager.AbstractBaseManager.java

/**
 *
 * @param listener A new listener for cache events.
 *///from   w  w  w  .  j  av  a2  s. c  o  m
public void addCacheListenerImpl(CacheListener<? extends Persistent> listener) {
    List<String> keys = listener.getInterestedFields();
    for (String key : keys) {
        // Peer.column names are the fields
        if (validFields != null && validFields.containsKey(key)) {
            FastArrayList listeners = listenersMap.get(key);
            if (listeners == null) {
                listeners = createSubsetList(key);
            }

            boolean isListenerNew = true;
            Iterator<?> j = listeners.iterator();
            while (j.hasNext()) {
                Object listener2 = ((WeakReference<?>) j.next()).get();
                //                    if (listener2 == null)
                //                    {
                //                        // do a little cleanup while checking for dupes
                //                        // not thread-safe, not likely to be many nulls
                //                        // but should revisit
                //                        //j.remove();
                //                    }
                //                    else
                if (listener2 == listener) {
                    isListenerNew = false;
                    break;
                }
            }
            if (isListenerNew) {
                listeners.add(new WeakReference<CacheListener<? extends Persistent>>(listener));
            }
        }
    }
}

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