Examples of org.zkoss.util.FastReadArray

org.zkoss.util.FastReadArray
An array of objects that are fast to read but a bit slower to add and remove.
It is thread-safe.
Typical use:
```
Object[] ary = fra.toArray(); for (int j = 0; j < ary.length; ++J) whatever;
```
@author tomyeh @since 3.0.6

      flag == 0 || (flag & FILTER_REQUEST) != 0 ? _reqfilters: _incfilters;
    if (filters.isEmpty()) //no need to sync
      return null; //optimize


    for (;;) {
      FastReadArray ary;
      synchronized (filters) {
        ary = (FastReadArray)filters.get(ext);
      }
      if (ary != null)
        return (Filter[])ary.toArray();


      int j = ext.indexOf('.');
      if (j < 0)   return null;
      ext = ext.substring(j + 1);
    }

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      addFilter(_reqfilters, ext, filter);
    if ((flags & FILTER_INCLUDE) != 0)
      addFilter(_incfilters, ext, filter);
  }
  private static void addFilter(Map filters, String ext, Filter filter) {
    FastReadArray ary;
    synchronized (filters) {
      ary = (FastReadArray)filters.get(ext);
      if (ary == null)
        filters.put(ext, ary = new FastReadArray(Filter.class));
    }
    ary.add(filter);
  }

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    if ((flags & FILTER_INCLUDE) != 0)
      removed = rmFilter(_incfilters, ext, filter) || removed;
    return removed;
  }
  private static boolean rmFilter(Map filters, String ext, Filter filter) {
    FastReadArray ary;
    synchronized (filters) {
      ary = (FastReadArray)filters.get(ext);
    }
    if (ary != null && ary.remove(filter)) {
      if (ary.isEmpty())
        synchronized (filters) {
          ary = (FastReadArray)filters.remove(ext);
          if (ary != null && !ary.isEmpty())
            filters.put(ext, ary); //modify by other, so restore
        }
      return true;
    }
    return false;

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