# Package org.apache.lucene.codecs.blocktreeords

Same postings format as Lucene50, except the terms dictionary also supports ords, i.e.

See: Description

Class Summary
BlockTreeOrdsPostingsFormat: Uses `OrdsBlockTreeTermsWriter` with `Lucene84PostingsWriter`.
OrdsBlockTreeTermsReader: See `OrdsBlockTreeTermsWriter`.
OrdsBlockTreeTermsWriter: This is just like `BlockTreeTermsWriter`, except it also stores a version per term, and adds a method to its TermsEnum implementation to seekExact only if the version is >= the specified version.
OrdsSegmentTermsEnum: Iterates through terms in this field.

## Package org.apache.lucene.codecs.blocktreeords Description

Same postings format as Lucene50, except the terms dictionary also supports ords, i.e. returning which ord the enum is seeked to, and seeking by ord.