if ( entry==null)
// Very rare circumstance; other thread snatched class from us
throw new ObjectStoreException( "Class "+indexedClass.getName()
+" was removed.");
if ( indexMap.get( indexName)!=null)
throw new IndexExistsException( indexName);
listModified=true;
if ( entry.indexStreams==null)
{
entry.indexStreams=new StreamPair(
manager.createDiskAllocator(entry.fileName + "i", DirectoryAllocator.FAVORED_CHUNK_SIZE, 0),