Example usage for org.apache.cassandra.dht Token isMinimum

Introduction

In this page you can find the example usage for org.apache.cassandra.dht Token isMinimum.

Prototype

public boolean isMinimum() 

Source Link

Usage

From source file:com.stratio.cassandra.index.TokenMapperMurmur.java

License:Apache License

/** {@inheritDoc} */
@Override//from   w  w  w .j  ava 2  s  .  co m
protected Query makeQuery(Token lower, Token upper, boolean includeLower, boolean includeUpper) {
    Long start = lower == null ? null : (Long) lower.getTokenValue();
    Long stop = upper == null ? null : (Long) upper.getTokenValue();
    if (lower != null && lower.isMinimum()) {
        start = null;
    }
    if (upper != null && upper.isMinimum()) {
        stop = null;
    }
    if (start == null && stop == null) {
        return null;
    }
    return NumericRangeQuery.newLongRange(FIELD_NAME, start, stop, includeLower, includeUpper);
}

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From source file:com.stratio.cassandra.lucene.key.TokenMapper.java

License:Apache License

/**
 * Returns a Lucene {@link Query} to find the {@link Document}s containing a {@link Token} inside the specified
 * token range./*from  w  w  w.  j a  v a2  s  .c  o  m*/
 *
 * @param lower the lower token
 * @param upper the upper token
 * @param includeLower if the lower token should be included
 * @param includeUpper if the upper token should be included
 * @return the query to find the documents containing a token inside the range
 */
public Optional<Query> query(Token lower, Token upper, boolean includeLower, boolean includeUpper) {

    // Skip if it's full data range
    if (lower.isMinimum() && upper.isMinimum()) {
        return Optional.empty();
    }

    // Get token values
    Long start = lower.isMinimum() ? null : value(lower);
    Long stop = upper.isMinimum() ? null : value(upper);

    // Do with cache
    CacheKey cacheKey = new CacheKey(start, stop, includeLower, includeUpper);
    CachingWrapperQuery cachedQuery = cache.getIfPresent(cacheKey);
    if (cachedQuery == null) {
        Query query = DocValuesRangeQuery.newLongRange(FIELD_NAME, start, stop, includeLower, includeUpper);
        cachedQuery = new CachingWrapperQuery(query);
        cache.put(cacheKey, cachedQuery);
    }
    return Optional.of(cachedQuery);
}

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