Example usage for org.apache.cassandra.db ClusteringComparator compare

Introduction

In this page you can find the example usage for org.apache.cassandra.db ClusteringComparator compare.

Prototype

public int compare(Clustering c1, Clustering c2) 

Source Link

Usage

From source file:com.stratio.cassandra.lucene.cache.SearchCacheEntry.java

License:Apache License

private boolean validPrefix(ClusteringComparator comparator, DataRange dataRange) {

    // Discard start prefix
    Optional<ClusteringPrefix> start = KeyMapper.startClusteringPrefix(dataRange);
    if (start.isPresent() && startPrefix.isPresent()
            && comparator.compare(startPrefix.get(), start.get()) > 0) {
        return false;
    }/*from w  ww  .  j a v a 2 s .  c o m*/

    // Discard null clusterings
    if (start.isPresent() != currentClustering.isPresent()) {
        return false;
    }

    // Discard clustering
    if (start.isPresent()
            && comparator.compare(new Clustering(start.get().getRawValues()), currentClustering.get()) != 0) {
        return false;
    }

    // Discard stop prefix
    Optional<ClusteringPrefix> stop = KeyMapper.stopClusteringPrefix(dataRange);
    if (stop.isPresent() && stopPrefix.isPresent() && comparator.compare(stopPrefix.get(), stop.get()) != 0) {
        return false;
    }

    return true;
}

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