Example usage for org.apache.cassandra.db PartitionPosition getToken

Introduction

In this page you can find the example usage for org.apache.cassandra.db PartitionPosition getToken.

Prototype

public Token getToken();

Source Link

Usage

From source file:com.stratio.cassandra.lucene.IndexService.java

License:Apache License

/**
 * Returns a Lucene {@link Query} to retrieve all the rows in the specified partition position.
 *
 * @param position the ring position//w  ww.j  av  a  2s.c  o  m
 * @return the query
 */
public Query query(PartitionPosition position) {
    return position instanceof DecoratedKey ? partitionMapper.query((DecoratedKey) position)
            : tokenMapper.query(position.getToken());
}

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From source file:com.stratio.cassandra.lucene.IndexServiceWide.java

License:Apache License

/** {@inheritDoc} */
@Override//from  w w  w  . jav  a  2 s . com
public Optional<Query> query(DataRange dataRange) {

    // Extract data range data
    PartitionPosition startPosition = dataRange.startKey();
    PartitionPosition stopPosition = dataRange.stopKey();
    Token startToken = startPosition.getToken();
    Token stopToken = stopPosition.getToken();
    Optional<ClusteringPrefix> maybeStartClustering = KeyMapper.startClusteringPrefix(dataRange);
    Optional<ClusteringPrefix> maybeStopClustering = KeyMapper.stopClusteringPrefix(dataRange);

    // Prepare query builder
    BooleanQuery.Builder builder = new BooleanQuery.Builder();

    // Add first partition filter
    maybeStartClustering.ifPresent(startClustering -> {
        DecoratedKey startKey = (DecoratedKey) startPosition;
        builder.add(keyMapper.query(startKey, startClustering, null, false, true), SHOULD);
    });

    // Add token range filter
    boolean includeStart = startPosition.kind() == MIN_BOUND && !maybeStartClustering.isPresent();
    boolean includeStop = stopPosition.kind() == MAX_BOUND && !maybeStopClustering.isPresent();
    tokenMapper.query(startToken, stopToken, includeStart, includeStop).ifPresent(x -> builder.add(x, SHOULD));

    // Add last partition filter
    maybeStopClustering.ifPresent(stopClustering -> {
        DecoratedKey stopKey = (DecoratedKey) stopPosition;
        builder.add(keyMapper.query(stopKey, null, stopClustering, true, false), SHOULD);
    });

    // Return query, or empty if there are no restrictions
    BooleanQuery query = builder.build();
    return query.clauses().isEmpty() ? Optional.empty() : Optional.of(query);
}

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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
 * {@link PartitionPosition}s./*from   w ww. j a  v  a2  s.c  o  m*/
 *
 * @param start the start position
 * @param stop the stop position
 * @return the query to find the documents containing a token inside the range
 */
public Optional<Query> query(PartitionPosition start, PartitionPosition stop) {
    return query(start.getToken(), stop.getToken(), includeStart(start), includeStop(stop));
}

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