Examples with LocalPartitioner org.apache.cassandra.dht.LocalPartitioner used on opensource projects

Example 1 with LocalPartitioner

use of org.apache.cassandra.dht.LocalPartitioner in project cassandra by apache.

the class CassandraIndex method indexCfsMetadata.

/**
     * Construct the TableMetadata for an index table, the clustering columns in the index table
     * vary dependent on the kind of the indexed value.
     * @param baseCfsMetadata
     * @param indexMetadata
     * @return
     */
public static TableMetadata indexCfsMetadata(TableMetadata baseCfsMetadata, IndexMetadata indexMetadata) {
    Pair<ColumnMetadata, IndexTarget.Type> target = TargetParser.parse(baseCfsMetadata, indexMetadata);
    CassandraIndexFunctions utils = getFunctions(indexMetadata, target);
    ColumnMetadata indexedColumn = target.left;
    AbstractType<?> indexedValueType = utils.getIndexedValueType(indexedColumn);
    TableMetadata.Builder builder = TableMetadata.builder(baseCfsMetadata.keyspace, baseCfsMetadata.indexTableName(indexMetadata), baseCfsMetadata.id).isDense(indexMetadata.isKeys()).isCompound(!indexMetadata.isKeys()).partitioner(new LocalPartitioner(indexedValueType)).addPartitionKeyColumn(indexedColumn.name, indexedColumn.type).addClusteringColumn("partition_key", baseCfsMetadata.partitioner.partitionOrdering());
    if (indexMetadata.isKeys()) {
        // A dense, compact table for KEYS indexes must have a compact
        // value column defined, even though it is never used
        CompactTables.DefaultNames names = CompactTables.defaultNameGenerator(ImmutableSet.of(indexedColumn.name.toString(), "partition_key"));
        builder.addRegularColumn(names.defaultCompactValueName(), EmptyType.instance);
    } else {
        // The clustering columns for a table backing a COMPOSITES index are dependent
        // on the specific type of index (there are specializations for indexes on collections)
        utils.addIndexClusteringColumns(builder, baseCfsMetadata, indexedColumn);
    }
    return builder.build().updateIndexTableMetadata(baseCfsMetadata.params);
}