Example usage for org.apache.lucene.search.suggest.analyzing FuzzySuggester DEFAULT_MAX_EDITS

Introduction

In this page you can find the example usage for org.apache.lucene.search.suggest.analyzing FuzzySuggester DEFAULT_MAX_EDITS.

Prototype

int DEFAULT_MAX_EDITS

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Document

The default maximum number of edits for fuzzy suggestions.

Usage

From source file:org.apache.solr.spelling.suggest.fst.FuzzyLookupFactory.java

License:Apache License

@Override
public Lookup create(NamedList params, SolrCore core) {

    // mandatory parameter
    Object fieldTypeName = params.get(AnalyzingLookupFactory.QUERY_ANALYZER);
    if (fieldTypeName == null) {
        throw new IllegalArgumentException(
                "Error in configuration: " + AnalyzingLookupFactory.QUERY_ANALYZER + " parameter is mandatory");
    }//  w  ww.  ja va 2  s.c  om
    // retrieve index and query analyzers for the field
    FieldType ft = core.getLatestSchema().getFieldTypeByName(fieldTypeName.toString());
    Analyzer indexAnalyzer = ft.getAnalyzer();
    Analyzer queryAnalyzer = ft.getQueryAnalyzer();

    // optional parameters
    boolean exactMatchFirst = (params.get(AnalyzingLookupFactory.EXACT_MATCH_FIRST) != null)
            ? Boolean.valueOf(params.get(AnalyzingLookupFactory.EXACT_MATCH_FIRST).toString())
            : true;

    boolean preserveSep = (params.get(AnalyzingLookupFactory.PRESERVE_SEP) != null)
            ? Boolean.valueOf(params.get(AnalyzingLookupFactory.PRESERVE_SEP).toString())
            : true;

    int options = 0;
    if (exactMatchFirst) {
        options |= FuzzySuggester.EXACT_FIRST;
    }
    if (preserveSep) {
        options |= FuzzySuggester.PRESERVE_SEP;
    }

    int maxSurfaceFormsPerAnalyzedForm = (params.get(AnalyzingLookupFactory.MAX_SURFACE_FORMS) != null)
            ? Integer.parseInt(params.get(AnalyzingLookupFactory.MAX_SURFACE_FORMS).toString())
            : 256;

    int maxGraphExpansions = (params.get(AnalyzingLookupFactory.MAX_EXPANSIONS) != null)
            ? Integer.parseInt(params.get(AnalyzingLookupFactory.MAX_EXPANSIONS).toString())
            : -1;

    boolean preservePositionIncrements = params.get(AnalyzingLookupFactory.PRESERVE_POSITION_INCREMENTS) != null
            ? Boolean.valueOf(params.get(AnalyzingLookupFactory.PRESERVE_POSITION_INCREMENTS).toString())
            : false;

    int maxEdits = (params.get(MAX_EDITS) != null) ? Integer.parseInt(params.get(MAX_EDITS).toString())
            : FuzzySuggester.DEFAULT_MAX_EDITS;

    boolean transpositions = (params.get(TRANSPOSITIONS) != null)
            ? Boolean.parseBoolean(params.get(TRANSPOSITIONS).toString())
            : FuzzySuggester.DEFAULT_TRANSPOSITIONS;

    int nonFuzzyPrefix = (params.get(NON_FUZZY_PREFIX) != null)
            ? Integer.parseInt(params.get(NON_FUZZY_PREFIX).toString())
            : FuzzySuggester.DEFAULT_NON_FUZZY_PREFIX;

    int minFuzzyLength = (params.get(MIN_FUZZY_LENGTH) != null)
            ? Integer.parseInt(params.get(MIN_FUZZY_LENGTH).toString())
            : FuzzySuggester.DEFAULT_MIN_FUZZY_LENGTH;

    boolean unicodeAware = (params.get(UNICODE_AWARE) != null)
            ? Boolean.valueOf(params.get(UNICODE_AWARE).toString())
            : FuzzySuggester.DEFAULT_UNICODE_AWARE;

    return new FuzzySuggester(indexAnalyzer, queryAnalyzer, options, maxSurfaceFormsPerAnalyzedForm,
            maxGraphExpansions, preservePositionIncrements, maxEdits, transpositions, nonFuzzyPrefix,
            minFuzzyLength, unicodeAware);
}

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