| Safe Haskell | Safe-Infered |
|---|
Database.Cassandra.Types
- data KeySelector
- data KeyRangeType
- mkKeyRange :: KeySelector -> KeyRange
- data Selector
- = All
- | ColNames [ColumnName]
- | SupNames ColumnName [ColumnName]
- | Range (Maybe ColumnName) (Maybe ColumnName) Order Int32
- mkPredicate :: Selector -> SlicePredicate
- data Order
- renderOrd :: Order -> Bool
- type ColumnFamily = String
- type Key = ByteString
- type ColumnName = ByteString
- type Value = ByteString
- data Column
- = SuperColumn ColumnName [Column]
- | Column { }
- type Row = [Column]
- col :: ByteString -> ByteString -> Column
- mkThriftCol :: Column -> IO Column
- castColumn :: ColumnOrSuperColumn -> Either CassandraException Column
- castCol :: Column -> Either CassandraException Column
- castSuperCol :: SuperColumn -> Either CassandraException Column
- data CassandraException
- getTime :: IO Int64
- class CKey a where
- toBS :: a -> ByteString
- fromBS :: ByteString -> a
Documentation
data KeySelector Source
A Key range selector to use with getMulti.
Constructors
| Keys [Key] | Just a list of keys to get |
| KeyRange KeyRangeType Key Key Int32 | A range of keys to get. Remember that RandomPartitioner ranges may not mean much as keys are randomly assigned to nodes. |
Instances
data KeyRangeType Source
Encodes the Key vs. Token options in the thrift API.
InclusiveRange ranges are just plain intuitive range queries.
WrapAround ranges are also inclusive, but they wrap around the ring.
Constructors
| InclusiveRange | |
| WrapAround |
Instances
A column selector/filter statement for queries.
Remember that SuperColumns are always fully deserialized, so we don't offer
a way to filter columns within a SuperColumn.
Constructors
| All | Return everything in |
| ColNames [ColumnName] | Return specific columns or super-columns depending on the |
| SupNames ColumnName [ColumnName] | When deleting specific columns in a super column |
| Range (Maybe ColumnName) (Maybe ColumnName) Order Int32 | Return a range of columns or super-columns |
type ColumnFamily = StringSource
type Key = ByteStringSource
type ColumnName = ByteStringSource
type Value = ByteStringSource
A Column is either a single key-value pair or a SuperColumn with an arbitrary number of key-value pairs
Constructors
| SuperColumn ColumnName [Column] | |
| Column | |
col :: ByteString -> ByteString -> ColumnSource
A short-hand for creating key-value Column values
mkThriftCol :: Column -> IO ColumnSource
data CassandraException Source
Cassandra is VERY sensitive to its timestamp values. As a convention, timestamps are always in microseconds
A typeclass to enable using any string-like type for row and column keys
Instances