private static void assertDocIdSetCacheable(IndexReader reader, Filter filter, bool shouldCacheable)
{
CachingWrapperFilter cacher = new CachingWrapperFilter(filter);
DocIdSet originalSet = filter.GetDocIdSet(reader);
DocIdSet cachedSet = cacher.GetDocIdSet(reader);
Assert.IsTrue(cachedSet.IsCacheable());
Assert.AreEqual(shouldCacheable, originalSet.IsCacheable());
//System.out.println("Original: "+originalSet.getClass().getName()+" -- cached: "+cachedSet.getClass().getName());
if (originalSet.IsCacheable())
{
Assert.AreEqual(originalSet.GetType(), cachedSet.GetType(), "Cached DocIdSet must be of same class like uncached, if cacheable");
}
else
{
Assert.IsTrue(cachedSet is OpenBitSetDISI, "Cached DocIdSet must be an OpenBitSet if the original one was not cacheable");
}
}
/// <summary>Provide the DocIdSet to be cached, using the DocIdSet provided
/// by the wrapped Filter.
/// This implementation returns the given DocIdSet.
/// </summary>
protected internal virtual DocIdSet DocIdSetToCache(DocIdSet docIdSet, IndexReader reader)
{
if (docIdSet.IsCacheable())
{
return(docIdSet);
}
else
{
DocIdSetIterator it = docIdSet.Iterator();
// null is allowed to be returned by iterator(),
// in this case we wrap with the empty set,
// which is cacheable.
return((it == null) ? DocIdSet.EMPTY_DOCIDSET : new OpenBitSetDISI(it, reader.MaxDoc()));
}
}
/// <summary>Provide the DocIdSet to be cached, using the DocIdSet provided
/// by the wrapped Filter.
/// This implementation returns the given DocIdSet.
/// </summary>
protected internal virtual DocIdSet DocIdSetToCache(DocIdSet docIdSet, IndexReader reader)
{
if (docIdSet.IsCacheable())
{
return docIdSet;
}
else
{
DocIdSetIterator it = docIdSet.Iterator();
// null is allowed to be returned by iterator(),
// in this case we wrap with the empty set,
// which is cacheable.
return (it == null) ? DocIdSet.EMPTY_DOCIDSET : new OpenBitSetDISI(it, reader.MaxDoc());
}
}
/// <summary>This DocIdSet implementation is cacheable if the inner set is cacheable. </summary>
public override bool IsCacheable()
{
return(_innerSet.IsCacheable());
}