Class TableMetadata

cassandra/metadata.py:1184–1448

A representation of the schema for a single table.

class TableMetadata(object):
    """
    A representation of the schema for a single table.
    """

    keyspace_name = None
    """ String name of this Table's keyspace """

    name = None
    """ The string name of the table. """

    partition_key = None
    """
    A list of :class:`.ColumnMetadata` instances representing the columns in
    the partition key for this table.  This will always hold at least one
    column.
    """

    clustering_key = None
    """
    A list of :class:`.ColumnMetadata` instances representing the columns
    in the clustering key for this table.  These are all of the
    :attr:`.primary_key` columns that are not in the :attr:`.partition_key`.

    Note that a table may have no clustering keys, in which case this will
    be an empty list.
    """

    @property
    def primary_key(self):
        """
        A list of :class:`.ColumnMetadata` representing the components of
        the primary key for this table.
        """
        return self.partition_key + self.clustering_key

    columns = None
    """
    A dict mapping column names to :class:`.ColumnMetadata` instances.
    """

    indexes = None
    """
    A dict mapping index names to :class:`.IndexMetadata` instances.
    """

    is_compact_storage = False

    options = None
    """
    A dict mapping table option names to their specific settings for this
    table.
    """

    compaction_options = {
        "min_compaction_threshold": "min_threshold",
        "max_compaction_threshold": "max_threshold",
        "compaction_strategy_class": "class"}