Package org.apache.lucene.util.automaton
Class FiniteStringsIterator
- java.lang.Object
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- org.apache.lucene.util.automaton.FiniteStringsIterator
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- Direct Known Subclasses:
LimitedFiniteStringsIterator
public class FiniteStringsIterator extends Object
Iterates all accepted strings.If the
Automaton
has cycles then this iterator may throw anIllegalArgumentException
, but this is not guaranteed!Be aware that the iteration order is implementation dependent and may change across releases.
If the automaton is not determinized then it's possible this iterator will return duplicates.
- WARNING: This API is experimental and might change in incompatible ways in the next release.
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Constructor Summary
Constructors Constructor Description FiniteStringsIterator(Automaton a)
Constructor.FiniteStringsIterator(Automaton a, int startState, int endState)
Constructor.
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Constructor Detail
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FiniteStringsIterator
public FiniteStringsIterator(Automaton a)
Constructor.- Parameters:
a
- Automaton to create finite string from.
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FiniteStringsIterator
public FiniteStringsIterator(Automaton a, int startState, int endState)
Constructor.- Parameters:
a
- Automaton to create finite string from.startState
- The starting state for each path.endState
- The state where each path should stop or -1 if only accepted states should be final.
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Method Detail
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next
public IntsRef next()
Generate next finite string. The return value is just valid until the next call of this method!- Returns:
- Finite string or null, if no more finite strings are available.
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