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# xapian-core Class List

Here are the classes, structs, unions and interfaces with brief descriptions:

Xapian::BM25Weight | BM25 weighting scheme
Xapian::BoolWeight | Boolean weighting scheme (everything gets 0)
Xapian::CategorySelectMatchSpy | MatchSpy for classifying matching documents by their values
Xapian::Database | This class is used to access a database, or a group of databases
Xapian::DateValueRangeProcessor | Handle a date range
Xapian::Document | A document in the database - holds data, values, terms, and postings
Xapian::Enquire | This class provides an interface to the information retrieval system for the purpose of searching
Xapian::ErrorHandler | Decide if a Xapian::Error exception should be ignored
Xapian::ESet | Class representing an ordered set of expand terms (an ESet)
Xapian::ESetIterator | Iterate through terms in the ESet
Xapian::ExpandDecider | Virtual base class for expand decider functor
Xapian::ExpandDeciderAnd | ExpandDecider subclass which rejects terms using two ExpandDeciders
Xapian::ExpandDeciderFilterTerms | ExpandDecider subclass which rejects terms in a specified list
Xapian::MatchDecider | Base class for matcher decision functor
Xapian::MSet | A match set (MSet)
Xapian::MSetIterator | An iterator pointing to items in an MSet
Xapian::MultipleMatchDecider | Class which applies several match deciders in turn
Xapian::v102::NumberValueRangeProcessor | Handle a number range
Xapian::PositionIterator | An iterator pointing to items in a list of positions
Xapian::PostingIterator | An iterator pointing to items in a list of postings
Xapian::Query | Class representing a query
Xapian::QueryParser | Build a Xapian::Query object from a user query string
Xapian::RSet | A relevance set (R-Set)
Xapian::SimpleStopper | Simple implementation of Stopper class - this will suit most users
Xapian::Stem | Class representing a stemming algorithm
Xapian::Stopper | Base class for stop-word decision functor
Xapian::StringAndFrequency | A string with a corresponding frequency
Xapian::StringListSerialiser | Class to serialise a list of strings in a form suitable for ValueCountMatchSpy
Xapian::StringListUnserialiser | Class to unserialise a list of strings serialised by a StringListSerialiser
Xapian::StringValueRangeProcessor | Handle a string range
Xapian::TermCountMatchSpy | Class for counting the frequencies of terms in the matching documents
Xapian::TermGenerator | Parses a piece of text and generate terms
Xapian::TermIterator | An iterator pointing to items in a list of terms
Xapian::TradWeight | Traditional probabilistic weighting scheme
Xapian::Utf8Iterator | An iterator which returns unicode character values from a UTF-8 encoded string
Xapian::ValueCountMatchSpy | Class for counting the frequencies of values in the matching documents
Xapian::ValueIterator | An iterator pointing to values associated with a document
Xapian::ValueRangeProcessor | Base class for value range processors
Xapian::Weight | Abstract base class for weighting schemes
Xapian::WritableDatabase | This class provides read/write access to a database