public final class FuzzyTermEnum extends FilteredTermEnum
Term enumerations are always ordered by Term.compareTo(). Each term in the enumeration is greater than all that precede it.
actualEnum, currentTerm| Constructor and Description |
|---|
FuzzyTermEnum(IndexReader reader,
Term term)
Creates a FuzzyTermEnum with an empty prefix and a minSimilarity of 0.5f.
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FuzzyTermEnum(IndexReader reader,
Term term,
float minSimilarity)
Creates a FuzzyTermEnum with an empty prefix.
|
FuzzyTermEnum(IndexReader reader,
Term term,
float minSimilarity,
int prefixLength)
Constructor for enumeration of all terms from specified
reader which share a prefix of
length prefixLength with term and which have a fuzzy similarity >
minSimilarity. |
| Modifier and Type | Method and Description |
|---|---|
void |
close()
Closes the enumeration to further activity, freeing resources.
|
float |
difference()
Equality measure on the term
|
boolean |
endEnum()
Indicates the end of the enumeration has been reached
|
protected boolean |
termCompare(Term term)
The termCompare method in FuzzyTermEnum uses Levenshtein distance to
calculate the distance between the given term and the comparing term.
|
docFreq, next, setEnum, termpublic FuzzyTermEnum(IndexReader reader, Term term) throws IOException
After calling the constructor the enumeration is already pointing to the first valid term if such a term exists.
reader - term - IOExceptionFuzzyTermEnum(IndexReader, Term, float, int)public FuzzyTermEnum(IndexReader reader, Term term, float minSimilarity) throws IOException
After calling the constructor the enumeration is already pointing to the first valid term if such a term exists.
reader - term - minSimilarity - IOExceptionFuzzyTermEnum(IndexReader, Term, float, int)public FuzzyTermEnum(IndexReader reader, Term term, float minSimilarity, int prefixLength) throws IOException
reader which share a prefix of
length prefixLength with term and which have a fuzzy similarity >
minSimilarity.
After calling the constructor the enumeration is already pointing to the first valid term if such a term exists.
reader - Delivers terms.term - Pattern term.minSimilarity - Minimum required similarity for terms from the reader. Default value is 0.5f.prefixLength - Length of required common prefix. Default value is 0.IOExceptionprotected final boolean termCompare(Term term)
termCompare in class FilteredTermEnumpublic final float difference()
difference in class FilteredTermEnumpublic final boolean endEnum()
endEnum in class FilteredTermEnumpublic void close()
throws IOException
close in interface Closeableclose in class FilteredTermEnumIOException