| Name | Description | Type | Package | Framework |
| BlockTreeTermsReader | A block-based terms index and dictionary that assigns terms to variable length blocks according to how they | Class | org.apache.lucene.codecs.blocktree | Apache Lucene |
| BlockTreeTermsWriter | Block-based terms index and dictionary writer. | Class | org.apache.lucene.codecs.blocktree | Apache Lucene |
| FieldReader | BlockTree's implementation of Terms. | Class | org.apache.lucene.codecs.blocktree | Apache Lucene |
| Stats | BlockTree statistics for a single field returned by FieldReader. | Class | org.apache.lucene.codecs.blocktree | Apache Lucene |
| Lucene40BlockTreeTermsReader | A block-based terms index and dictionary that assigns terms to variable length blocks according to how they | Class | org.apache.lucene.codecs.blocktree | Apache Lucene |
| BlockTreeOrdsPostingsFormat | Uses OrdsBlockTreeTermsWriter with Lucene50PostingsWriter. | Class | org.apache.lucene.codecs.blocktreeords | Apache Lucene |
| OrdsBlockTreeTermsReader | See OrdsBlockTreeTermsWriter. | Class | org.apache.lucene.codecs.blocktreeords | Apache Lucene |
| 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. | Class | org.apache.lucene.codecs.blocktreeords | Apache Lucene |
| OrdsSegmentTermsEnum | Iterates through terms in this field. | Class | org.apache.lucene.codecs.blocktreeords | Apache Lucene |
| BlockTreeOrdsPostingsFormat | Uses OrdsBlockTreeTermsWriter with Lucene50PostingsWriter. | Class | org.apache.lucene.codecs.blocktreeords | Apache Lucene Codecs |
| OrdsBlockTreeTermsReader | See OrdsBlockTreeTermsWriter. | Class | org.apache.lucene.codecs.blocktreeords | Apache Lucene Codecs |
| 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. | Class | org.apache.lucene.codecs.blocktreeords | Apache Lucene Codecs |
| OrdsSegmentTermsEnum | Iterates through terms in this field. | Class | org.apache.lucene.codecs.blocktreeords | Apache Lucene Codecs |