org.apache.lucene.index

Interface LeafReader.CoreClosedListener

Enclosing class:

LeafReader

public static interface LeafReader.CoreClosedListener

Called when the shared core for this LeafReader is closed.

If this LeafReader impl has the ability to share resources across instances that might only vary through deleted documents and doc values updates, then this listener will only be called when the shared core is closed. Otherwise, this listener will be called when this reader is closed.

This is typically useful to manage per-segment caches: when the listener is called, it is safe to evict this reader from any caches keyed on IndexReader.getCoreCacheKey().

WARNING: This API is experimental and might change in incompatible ways in the next release.

Method Summary

Modifier and Type	Method and Description
void	onClose(Object ownerCoreCacheKey) Invoked when the shared core of the original SegmentReader has closed.

Method Detail

onClose

void onClose(Object ownerCoreCacheKey)
      throws IOException

Invoked when the shared core of the original SegmentReader has closed. The provided ownerCoreCacheKey will be the same key as the one returned by IndexReader.getCoreCacheKey().

Throws:

IOException