Example usage for org.apache.cassandra.db PartitionRangeReadCommand limits

Introduction

In this page you can find the example usage for org.apache.cassandra.db PartitionRangeReadCommand limits.

Prototype

public DataLimits limits();

Source Link

Document

The limits for the query.

Usage

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

License:Apache License

private PartitionIterator update(PartitionRangeReadCommand command, PartitionIterator data,
        ConsistencyLevel cl) {//from  w w  w .j a  v  a2s  .  c om

    // Collect query bounds
    RangeMerger rangeMerger = LuceneStorageProxy.rangeMerger(command, cl);
    List<AbstractBounds<PartitionPosition>> bounds = new LinkedList<>();
    while (rangeMerger.hasNext()) {
        bounds.add(rangeMerger.next().range);
    }

    List<SimpleRowIterator> rowIterators = new LinkedList<>();
    int count = 0;
    while (data.hasNext()) {
        RowIterator partition = data.next();
        DecoratedKey key = partition.partitionKey();
        AbstractBounds<PartitionPosition> bound = bounds.stream().filter(b -> b.contains(key)).findAny()
                .orElseGet(null);
        while (partition.hasNext()) {
            clear(bound);
            SimpleRowIterator newRowIterator = new SimpleRowIterator(partition);
            rowIterators.add(newRowIterator);
            Clustering clustering = newRowIterator.getRow().clustering();
            entries.put(key, clustering);
            if (remaining > 0) {
                remaining--;
            }
            count++;
        }
        partition.close();
    }
    data.close();

    hasMorePages = remaining > 0 && count >= command.limits().count();

    return new SimplePartitionIterator(rowIterators);
}

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