Uses of Class
org.apache.lucene.util.automaton.Automaton

Packages that use Automaton

Package	Description
org.apache.lucene.analysis	API and code to convert text into indexable/searchable tokens.
org.apache.lucene.search	Code to search indices.
org.apache.lucene.util.automaton	Finite-state automaton for regular expressions.

Uses of Automaton in org.apache.lucene.analysis

Methods in org.apache.lucene.analysis that return Automaton

Modifier and Type	Method	Description
Automaton	TokenStreamToAutomaton.toAutomaton(TokenStream in)	Pulls the graph (including PositionLengthAttribute) from the provided TokenStream, and creates the corresponding automaton where arcs are bytes (or Unicode code points if unicodeArcs = true) from each term.

Uses of Automaton in org.apache.lucene.search

Fields in org.apache.lucene.search declared as Automaton

Modifier and Type	Field	Description
protected Automaton	AutomatonQuery.automaton	the automaton to match index terms against

Methods in org.apache.lucene.search that return Automaton

Modifier and Type	Method	Description
Automaton	AutomatonQuery.getAutomaton()	Returns the automaton used to create this query
static Automaton	WildcardQuery.toAutomaton(Term wildcardquery)	Convert Lucene wildcard syntax into an automaton.

Constructors in org.apache.lucene.search with parameters of type Automaton

Constructor	Description
AutomatonQuery(Term term, Automaton automaton)	Create a new AutomatonQuery from an Automaton.

Uses of Automaton in org.apache.lucene.util.automaton

Methods in org.apache.lucene.util.automaton that return Automaton

Modifier and Type	Method	Description
Automaton	Automaton.clone()	Returns a clone of this automaton.
Automaton	Automaton.complement()	See BasicOperations.complement(Automaton).
static Automaton	BasicOperations.complement(Automaton a)	Returns a (deterministic) automaton that accepts the complement of the language of the given automaton.
static Automaton	Automaton.concatenate(List<Automaton> l)	See BasicOperations.concatenate(List).
Automaton	Automaton.concatenate(Automaton a)	See BasicOperations.concatenate(Automaton, Automaton).
static Automaton	BasicOperations.concatenate(List<Automaton> l)	Returns an automaton that accepts the concatenation of the languages of the given automata.
static Automaton	BasicOperations.concatenate(Automaton a1, Automaton a2)	Returns an automaton that accepts the concatenation of the languages of the given automata.
Automaton	UTF32ToUTF8.convert(Automaton utf32)	Converts an incoming utf32 automaton to an equivalent utf8 one.
Automaton	AutomatonProvider.getAutomaton(String name)	Returns automaton of the given name.
Automaton	Automaton.intersection(Automaton a)	See BasicOperations.intersection(Automaton, Automaton).
static Automaton	BasicOperations.intersection(Automaton a1, Automaton a2)	Returns an automaton that accepts the intersection of the languages of the given automata.
static Automaton	BasicAutomata.makeAnyChar()	Returns a new (deterministic) automaton that accepts any single codepoint.
static Automaton	BasicAutomata.makeAnyString()	Returns a new (deterministic) automaton that accepts all strings.
static Automaton	BasicAutomata.makeChar(int c)	Returns a new (deterministic) automaton that accepts a single codepoint of the given value.
static Automaton	BasicAutomata.makeCharRange(int min, int max)	Returns a new (deterministic) automaton that accepts a single codepoint whose value is in the given interval (including both end points).
static Automaton	BasicAutomata.makeEmpty()	Returns a new (deterministic) automaton with the empty language.
static Automaton	BasicAutomata.makeEmptyString()	Returns a new (deterministic) automaton that accepts only the empty string.
static Automaton	BasicAutomata.makeInterval(int min, int max, int digits)	Returns a new automaton that accepts strings representing decimal non-negative integers in the given interval.
static Automaton	BasicAutomata.makeString(int[] word, int offset, int length)
static Automaton	BasicAutomata.makeString(String s)	Returns a new (deterministic) automaton that accepts the single given string.
static Automaton	BasicAutomata.makeStringUnion(Collection<BytesRef> utf8Strings)	Returns a new (deterministic and minimal) automaton that accepts the union of the given collection of BytesRefs representing UTF-8 encoded strings.
static Automaton	Automaton.minimize(Automaton a)	See MinimizationOperations.minimize(Automaton).
Automaton	Automaton.minus(Automaton a)	See BasicOperations.minus(Automaton, Automaton).
static Automaton	BasicOperations.minus(Automaton a1, Automaton a2)	Returns a (deterministic) automaton that accepts the intersection of the language of a1 and the complement of the language of a2.
Automaton	Automaton.optional()	See BasicOperations.optional(Automaton).
static Automaton	BasicOperations.optional(Automaton a)	Returns an automaton that accepts the union of the empty string and the language of the given automaton.
Automaton	Automaton.repeat()	See BasicOperations.repeat(Automaton).
Automaton	Automaton.repeat(int min)	See BasicOperations.repeat(Automaton, int).
Automaton	Automaton.repeat(int min, int max)	See BasicOperations.repeat(Automaton, int, int).
static Automaton	BasicOperations.repeat(Automaton a)	Returns an automaton that accepts the Kleene star (zero or more concatenated repetitions) of the language of the given automaton.
static Automaton	BasicOperations.repeat(Automaton a, int min)	Returns an automaton that accepts min or more concatenated repetitions of the language of the given automaton.
static Automaton	BasicOperations.repeat(Automaton a, int min, int max)	Returns an automaton that accepts between min and max (including both) concatenated repetitions of the language of the given automaton.
Automaton	LevenshteinAutomata.toAutomaton(int n)	Compute a DFA that accepts all strings within an edit distance of n.
Automaton	RegExp.toAutomaton()	Constructs new Automaton from this RegExp.
Automaton	RegExp.toAutomaton(Map<String,Automaton> automata)	Constructs new Automaton from this RegExp.
Automaton	RegExp.toAutomaton(AutomatonProvider automaton_provider)	Constructs new Automaton from this RegExp.
static Automaton	Automaton.union(Collection<Automaton> l)	See BasicOperations.union(Collection).
Automaton	Automaton.union(Automaton a)	See BasicOperations.union(Automaton, Automaton).
static Automaton	BasicOperations.union(Collection<Automaton> l)	Returns an automaton that accepts the union of the languages of the given automata.
static Automaton	BasicOperations.union(Automaton a1, Automaton a2)	Returns an automaton that accepts the union of the languages of the given automata.

Methods in org.apache.lucene.util.automaton with parameters of type Automaton

Modifier and Type	Method	Description
static void	BasicOperations.addEpsilons(Automaton a, Collection<StatePair> pairs)	Adds epsilon transitions to the given automaton.
static Automaton	BasicOperations.complement(Automaton a)	Returns a (deterministic) automaton that accepts the complement of the language of the given automaton.
Automaton	Automaton.concatenate(Automaton a)	See BasicOperations.concatenate(Automaton, Automaton).
static Automaton	BasicOperations.concatenate(Automaton a1, Automaton a2)	Returns an automaton that accepts the concatenation of the languages of the given automata.
Automaton	UTF32ToUTF8.convert(Automaton utf32)	Converts an incoming utf32 automaton to an equivalent utf8 one.
static void	BasicOperations.determinize(Automaton a)	Determinizes the given automaton.
static String	SpecialOperations.getCommonPrefix(Automaton a)	Returns the longest string that is a prefix of all accepted strings and visits each state at most once.
static BytesRef	SpecialOperations.getCommonPrefixBytesRef(Automaton a)
static String	SpecialOperations.getCommonSuffix(Automaton a)	Returns the longest string that is a suffix of all accepted strings and visits each state at most once.
static BytesRef	SpecialOperations.getCommonSuffixBytesRef(Automaton a)
static Set<IntsRef>	SpecialOperations.getFiniteStrings(Automaton a, int limit)	Returns the set of accepted strings, assuming that at most limit strings are accepted.
Automaton	Automaton.intersection(Automaton a)	See BasicOperations.intersection(Automaton, Automaton).
static Automaton	BasicOperations.intersection(Automaton a1, Automaton a2)	Returns an automaton that accepts the intersection of the languages of the given automata.
static boolean	BasicOperations.isEmpty(Automaton a)	Returns true if the given automaton accepts no strings.
static boolean	BasicOperations.isEmptyString(Automaton a)	Returns true if the given automaton accepts the empty string and nothing else.
static boolean	SpecialOperations.isFinite(Automaton a)	Returns true if the language of this automaton is finite.
static boolean	BasicOperations.isTotal(Automaton a)	Returns true if the given automaton accepts all strings.
static Automaton	Automaton.minimize(Automaton a)	See MinimizationOperations.minimize(Automaton).
static void	MinimizationOperations.minimize(Automaton a)	Minimizes (and determinizes if not already deterministic) the given automaton.
static void	MinimizationOperations.minimizeHopcroft(Automaton a)	Minimizes the given automaton using Hopcroft's algorithm.
Automaton	Automaton.minus(Automaton a)	See BasicOperations.minus(Automaton, Automaton).
static Automaton	BasicOperations.minus(Automaton a1, Automaton a2)	Returns a (deterministic) automaton that accepts the intersection of the language of a1 and the complement of the language of a2.
static Automaton	BasicOperations.optional(Automaton a)	Returns an automaton that accepts the union of the empty string and the language of the given automaton.
static Automaton	BasicOperations.repeat(Automaton a)	Returns an automaton that accepts the Kleene star (zero or more concatenated repetitions) of the language of the given automaton.
static Automaton	BasicOperations.repeat(Automaton a, int min)	Returns an automaton that accepts min or more concatenated repetitions of the language of the given automaton.
static Automaton	BasicOperations.repeat(Automaton a, int min, int max)	Returns an automaton that accepts between min and max (including both) concatenated repetitions of the language of the given automaton.
static Set<State>	SpecialOperations.reverse(Automaton a)	Reverses the language of the given (non-singleton) automaton while returning the set of new initial states.
static boolean	BasicOperations.run(Automaton a, String s)	Returns true if the given string is accepted by the automaton.
static boolean	BasicOperations.sameLanguage(Automaton a1, Automaton a2)	Returns true if these two automata accept exactly the same language.
boolean	Automaton.subsetOf(Automaton a)	See BasicOperations.subsetOf(Automaton, Automaton).
static boolean	BasicOperations.subsetOf(Automaton a1, Automaton a2)	Returns true if the language of a1 is a subset of the language of a2.
Automaton	Automaton.union(Automaton a)	See BasicOperations.union(Automaton, Automaton).
static Automaton	BasicOperations.union(Automaton a1, Automaton a2)	Returns an automaton that accepts the union of the languages of the given automata.

Method parameters in org.apache.lucene.util.automaton with type arguments of type Automaton

Modifier and Type	Method	Description
static Automaton	Automaton.concatenate(List<Automaton> l)	See BasicOperations.concatenate(List).
static Automaton	BasicOperations.concatenate(List<Automaton> l)	Returns an automaton that accepts the concatenation of the languages of the given automata.
Automaton	RegExp.toAutomaton(Map<String,Automaton> automata)	Constructs new Automaton from this RegExp.
static Automaton	Automaton.union(Collection<Automaton> l)	See BasicOperations.union(Collection).
static Automaton	BasicOperations.union(Collection<Automaton> l)	Returns an automaton that accepts the union of the languages of the given automata.

Constructors in org.apache.lucene.util.automaton with parameters of type Automaton

Constructor	Description
ByteRunAutomaton(Automaton a)
ByteRunAutomaton(Automaton a, boolean utf8)	expert: if utf8 is true, the input is already byte-based
CharacterRunAutomaton(Automaton a)
CompiledAutomaton(Automaton automaton)
CompiledAutomaton(Automaton automaton, Boolean finite, boolean simplify)
RunAutomaton(Automaton a, int maxInterval, boolean tableize)	Constructs a new RunAutomaton from a deterministic Automaton.