## Package org.apache.mahout.text

Class Summary
LuceneIndexHelper: Utility for checking if a field exist in a Lucene index.
LuceneSegmentInputFormat: `InputFormat` implementation which splits a Lucene index at the segment level.
LuceneSegmentInputSplit: `InputSplit` implementation that represents a Lucene segment.
LuceneSegmentRecordReader: `RecordReader` implementation for Lucene segments.
LuceneStorageConfiguration: Holds all the configuration for `SequenceFilesFromLuceneStorage`, which generates a sequence file with id as the key and a content field as value.
MailArchivesClusteringAnalyzer: Custom Lucene Analyzer designed for aggressive feature reduction for clustering the ASF Mail Archives using an extended set of stop words, excluding non-alpha-numeric tokens, and porter stemming.
MultipleTextFileInputFormat: Used in combining a large number of text files into one text input reader along with the WholeFileRecordReader class.
PrefixAdditionFilter: Default parser for parsing text into sequence files.
ReadOnlyFileSystemDirectory: This class implements a read-only Lucene Directory on top of a general FileSystem.
SequenceFilesFromDirectory: Converts a directory of text documents into SequenceFiles of Specified chunkSize.
SequenceFilesFromDirectoryFilter: Implement this interface if you wish to extend SequenceFilesFromDirectory with your own parsing logic.
SequenceFilesFromDirectoryMapper: Map class for SequenceFilesFromDirectory MR job
SequenceFilesFromLuceneStorage: Generates a sequence file from a Lucene index with a specified id field as the key and a content field as the value.
SequenceFilesFromLuceneStorageDriver: Driver class for the lucene2seq program.
SequenceFilesFromLuceneStorageMapper: Maps document IDs to key value pairs with ID field as the key and the concatenated stored field(s) as value.
SequenceFilesFromLuceneStorageMRJob: Generates a sequence file from a Lucene index via MapReduce.
SequenceFilesFromMailArchives: Converts a directory of gzipped mail archives into SequenceFiles of specified chunkSize.
SequenceFilesFromMailArchivesMapper: Map Class for the SequenceFilesFromMailArchives job
TextParagraphSplittingJob
TextParagraphSplittingJob.SplitMap
WholeFileRecordReader: RecordReader used with the MultipleTextFileInputFormat class to read full files as k/v pairs and groups of files as single input splits.
WikipediaToSequenceFile: Create and run the Wikipedia Dataset Creator.

Enum Summary
SequenceFilesFromLuceneStorageMapper.DataStatus

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