Example usage for org.apache.lucene.search.highlight QueryTermExtractor getTerms

Introduction

In this page you can find the example usage for org.apache.lucene.search.highlight QueryTermExtractor getTerms.

Prototype

public static WeightedTerm[] getTerms(Query query, boolean prohibited, String fieldName) 

Source Link

Document

Extracts all terms texts of a given Query into an array of WeightedTerms

Usage

From source file:com.liferay.portal.search.lucene31.LuceneHelperImpl.java

License:Open Source License

public String[] getQueryTerms(Query query) {
    String[] fieldNames = new String[] { Field.CONTENT, Field.DESCRIPTION, Field.PROPERTIES, Field.TITLE,
            Field.USER_NAME };/*from   ww w  .  j av  a 2s .  c o  m*/

    WeightedTerm[] weightedTerms = null;

    for (String fieldName : fieldNames) {
        weightedTerms = QueryTermExtractor.getTerms(query, false, fieldName);

        if (weightedTerms.length > 0) {
            break;
        }
    }

    Set<String> queryTerms = new HashSet<String>();

    for (WeightedTerm weightedTerm : weightedTerms) {
        queryTerms.add(weightedTerm.getTerm());
    }

    return queryTerms.toArray(new String[queryTerms.size()]);
}

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From source file:de.innovationgate.wgpublisher.lucene.LuceneManager.java

License:Open Source License

public Highlighter createHighlighter(String itemOrMeta, Query query, Formatter formatter) {
    if (itemOrMeta == null) {
        return null;
    }/* ww w  .  ja  va 2 s  .c  om*/
    if (query == null) {
        return null;
    }

    // create scorer
    // use only terms for this item and terms for allcontent for scoring
    List terms = new ArrayList();
    WeightedTerm[] termsForThisItem = QueryTermExtractor.getTerms(query, false, itemOrMeta);
    if (termsForThisItem != null) {
        for (int i = 0; i < termsForThisItem.length; i++) {
            terms.add(termsForThisItem[i]);
        }
    }
    WeightedTerm[] termsForAllContent = QueryTermExtractor.getTerms(query, false,
            LuceneManager.INDEXFIELD_ALLCONTENT);
    if (termsForAllContent != null) {
        for (int i = 0; i < termsForAllContent.length; i++) {
            terms.add(termsForAllContent[i]);
        }
    }
    WeightedTerm[] termsArray = new WeightedTerm[terms.size()];
    for (int i = 0; i < terms.size(); i++) {
        WeightedTerm term = (WeightedTerm) terms.get(i);
        termsArray[i] = term;
    }
    QueryTermScorer scorer = new QueryTermScorer(termsArray);

    // create highlighter
    Highlighter highlighter = new Highlighter(formatter, scorer);

    return highlighter;
}

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From source file:it.unibz.instasearch.indexing.Searcher.java

License:Open Source License

/**
 * Extracts search terms and their weights
 * @param query/*from  w ww .j  av  a  2  s .  c  o m*/
 * @return
 */
private static Map<String, Float> extractTerms(Query query) {
    WeightedTerm[] weightedTerms = QueryTermExtractor.getTerms(query, false, Field.CONTENTS.toString());

    Map<String, Float> terms = new HashMap<String, Float>(weightedTerms.length);

    for (WeightedTerm weightedTerm : weightedTerms)
        terms.put(weightedTerm.getTerm(), weightedTerm.getWeight());

    return terms;
}

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