Example usage for org.apache.cassandra.db.filter ClusteringIndexNamesFilter requestedRows

Introduction

In this page you can find the example usage for org.apache.cassandra.db.filter ClusteringIndexNamesFilter requestedRows.

Prototype

public NavigableSet<Clustering> requestedRows() 

Source Link

Document

The set of requested rows.

Usage

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

License:Apache License

/**
 * Returns a Lucene {@link Query} to retrieve all the rows in the specified clustering names filter.
 *
 * @param key the partition key/*from w w w .  j  av  a2  s  .co  m*/
 * @param namesFilter the names filter
 * @return the Lucene query
 */
public Query query(DecoratedKey key, ClusteringIndexNamesFilter namesFilter) {
    NavigableSet<Clustering> clusterings = namesFilter.requestedRows();
    if (!clusterings.isEmpty()) {
        BooleanQuery.Builder builder = new BooleanQuery.Builder();
        for (Clustering clustering : clusterings) {
            builder.add(query(key, clustering), SHOULD);
        }
        return builder.build();
    }
    return null;
}

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