Package org.apache.lucene.analysis.hunspell

Interface FragmentChecker

All Known Implementing Classes:

NGramFragmentChecker

public interface FragmentChecker

An oracle for quickly checking that a specific part of a word can never be a valid word. This allows speeding up the "Modification" part of Suggester by avoiding expensive checks on impossible words. Implementations may use character case, n-grams or whatever they like.

See Also:

• NGramFragmentChecker

Field Summary

Fields

Modifier and Type	Field	Description
static final FragmentChecker	EVERYTHING_POSSIBLE

Method Summary

Modifier and Type	Method	Description
boolean	hasImpossibleFragmentAround(CharSequence word, int start, int end)	Check if the given word range intersects any fragment which is impossible in the current language.

Field Details

EVERYTHING_POSSIBLE

static final FragmentChecker EVERYTHING_POSSIBLE

Method Details

hasImpossibleFragmentAround

boolean hasImpossibleFragmentAround(CharSequence word,
 int start,
 int end)

Check if the given word range intersects any fragment which is impossible in the current language. For example, if the word is "aaax", and there are no "aaa" combinations in words accepted by the spellchecker (but "aax" is valid), then true can be returned for all ranges in 0..3, but not for 3..4.

The implementation must be monotonic: if some range is considered impossible, larger ranges encompassing it should also produce true.

Parameters:

word - the whole word being checked for impossible substrings

start - the start of the range in question, inclusive

end - the end of the range in question, inclusive, not smaller than start