Field Detail

• defaultMinSimilarity

  public static final float defaultMinSimilarity

  Deprecated. 

  See Also:

  Constant Field Values

• defaultPrefixLength

  public static final int defaultPrefixLength

  Deprecated. 

  See Also:

  Constant Field Values

• defaultMaxExpansions

  public static final int defaultMaxExpansions

  Deprecated. 

  See Also:

  Constant Field Values

• term

  protected Term term

  Deprecated. 

Constructor Detail

• SlowFuzzyQuery

  public SlowFuzzyQuery(Term term,
                        float minimumSimilarity,
                        int prefixLength,
                        int maxExpansions)

  Deprecated. 
  Create a new SlowFuzzyQuery that will match terms with a similarity of at least minimumSimilarity to term. If a prefixLength > 0 is specified, a common prefix of that length is also required.

  Parameters:

  term - the term to search for

  minimumSimilarity - a value between 0 and 1 to set the required similarity between the query term and the matching terms. For example, for a minimumSimilarity of 0.5 a term of the same length as the query term is considered similar to the query term if the edit distance between both terms is less than length(term)*0.5

  Alternatively, if minimumSimilarity is >= 1f, it is interpreted as a pure Levenshtein edit distance. For example, a value of 2f will match all terms within an edit distance of 2 from the query term. Edit distances specified in this way may not be fractional.

  prefixLength - length of common (non-fuzzy) prefix

  maxExpansions - the maximum number of terms to match. If this number is greater than BooleanQuery.getMaxClauseCount() when the query is rewritten, then the maxClauseCount will be used instead.

  Throws:

  IllegalArgumentException - if minimumSimilarity is >= 1 or < 0 or if prefixLength < 0

• SlowFuzzyQuery

  public SlowFuzzyQuery(Term term,
                        float minimumSimilarity,
                        int prefixLength)

  Deprecated. 
  Calls SlowFuzzyQuery(term, minimumSimilarity, prefixLength, defaultMaxExpansions).

• SlowFuzzyQuery

  public SlowFuzzyQuery(Term term,
                        float minimumSimilarity)

  Deprecated. 
  Calls SlowFuzzyQuery(term, minimumSimilarity, 0, defaultMaxExpansions).

• SlowFuzzyQuery

  public SlowFuzzyQuery(Term term)

  Deprecated. 
  Calls SlowFuzzyQuery(term, defaultMinSimilarity, 0, defaultMaxExpansions).

Method Detail

• getMinSimilarity

  public float getMinSimilarity()

  Deprecated. 
  Returns the minimum similarity that is required for this query to match.

  Returns:

  float value between 0.0 and 1.0

• getPrefixLength

  public int getPrefixLength()

  Deprecated. 
  Returns the non-fuzzy prefix length. This is the number of characters at the start of a term that must be identical (not fuzzy) to the query term if the query is to match that term.

• getTermsEnum

  protected TermsEnum getTermsEnum(Terms terms,
                                   AttributeSource atts)
                            throws IOException

  Deprecated. 
  Description copied from class: MultiTermQuery
  Construct the enumeration to be used, expanding the pattern term. This method should only be called if the field exists (ie, implementations can assume the field does exist). This method should not return null (should instead return TermsEnum.EMPTY if no terms match). The TermsEnum must already be positioned to the first matching term. The given AttributeSource is passed by the MultiTermQuery.RewriteMethod to provide attributes, the rewrite method uses to inform about e.g. maximum competitive boosts. This is currently only used by TopTermsRewrite

  Specified by:

  getTermsEnum in class MultiTermQuery

  Throws:

  IOException

• getTerm

  public Term getTerm()

  Deprecated. 
  Returns the pattern term.

• toString

  public String toString(String field)

  Deprecated. 
  Description copied from class: Query
  Prints a query to a string, with field assumed to be the default field and omitted.

  Specified by:

  toString in class Query

• hashCode

  public int hashCode()

  Deprecated. 
  Description copied from class: Query
  Override and implement query hash code properly in a subclass. This is required so that QueryCache works properly.

  Overrides:

  hashCode in class MultiTermQuery

  See Also:

  Query.equals(Object)

• equals

  public boolean equals(Object obj)

  Deprecated. 
  Description copied from class: Query
  Override and implement query instance equivalence properly in a subclass. This is required so that QueryCache works properly. Typically a query will be equal to another only if it's an instance of the same class and its document-filtering properties are identical that other instance. Utility methods are provided for certain repetitive code.

  Overrides:

  equals in class MultiTermQuery

  See Also:

  Query.sameClassAs(Object), Query.classHash()