public boolean equals(Object o) {
if (!(o instanceof FilteredSubContext)) {
return false;
}
FilteredSubContext that = (FilteredSubContext) o;
return context.equals(that.context)
&& filter.equals(that.filter)
&& secondaryFilter.equals(that.secondaryFilter)
&& (recurse == that.recurse);
}
/**
* <code>getSubContext</code> creates a new context which has <code>FeatureHolder</code>s filtered
* using the current filter.
*
* @param context a <code>PairwiseRenderContext</code>.
* @return a <code>PairwiseRenderContext</code>.
*/
protected PairwiseRenderContext getSubContext(PairwiseRenderContext context) {
// Filter the sequence features
FeatureFilter ff =
new FeatureFilter.And(filter, new FeatureFilter.OverlapsLocation(context.getRange()));
// Filter the secondary sequence features
FeatureFilter ffSec =
new FeatureFilter.And(
filter, new FeatureFilter.OverlapsLocation(context.getSecondaryRange()));
// Create a cache key
FilteredSubContext cacheKey = new FilteredSubContext(context, ff, ffSec, recurse);
// Try the cache for a context first
PairwiseRenderContext filtered = (PairwiseRenderContext) subContextCache.get(cacheKey);
if (filtered == null) {
// None in cache, so make a new one
filtered =
new SubPairwiseRenderContext(
context, // context delegate
null, // symbols
null, // secondary symbols
context.getFeatures().filter(ff, recurse),
context.getFeatures().filter(ffSec, recurse),
null, // range
null); // secondary range
// Add to cache
subContextCache.put(cacheKey, filtered);
// Create a listener for changes in the feature holder
CacheFlusher cf = new CacheFlusher(cacheKey);
// Add the listener for changes in features
((Changeable) context.getSymbols()).addChangeListener(cf, FeatureHolder.FEATURES);
cacheFlushers.add(cf);
}
return filtered;
}
public int hashCode() {
return context.hashCode() ^ filter.hashCode();
}
