Polidoro, the (not so evil) twin brother of Cassandra.
Polidoro is a light sugar over Astyanax using much the same model as
Chris Shorrockin's Cascal
with slight changes where required.
The primary goal is to provide the simple insert, delete, list and get operations
from Cascal. For anything more complex you can use Astyanax directly.
The column family model supported by Polidoro breaks down as below.
ColFam
Holds the keyspace and column family name.
RowPath
Adds a rowkey onto the ColFam. Supports the list call to slice over the row.
ColumnPath
Targets a specific column by name. Supports the get call to optionally return
the column. Also supports com.netflix.astyanax.ColumnMutation calls (although
see Operations below for batch support).
val maybeCol = (cfOutlets \ url) list List("a", "b", "c")
val rangeCols = (cfOutlets \ url) list ("a", "z".incr)
Testing
The SpotAsty object supports the specTestInit call for testing which loads an embedded cassandra
server. A com.spotright.polidoro.AstyanaxTestPool trait is available as a template to embedding
the daemon in tests that use specs2.
Polidoro, the (not so evil) twin brother of Cassandra.
Polidoro is a light sugar over Astyanax using much the same model as Chris Shorrockin's Cascal with slight changes where required.
The primary goal is to provide the simple insert, delete, list and get operations from Cascal. For anything more complex you can use Astyanax directly.
The column family model supported by Polidoro breaks down as below.
ColFam
Holds the keyspace and column family name.
RowPath
Adds a rowkey onto the ColFam. Supports the
listcall to slice over the row.ColumnPath
Targets a specific column by name. Supports the
getcall to optionally return the column. Also supports com.netflix.astyanax.ColumnMutation calls (although see Operations below for batch support).Column
Assigns a value to a ColumnPath.
Composites
A com.spotright.polidoro.model.CompositeFactory is available to make creating Composites easier.
Operations
An com.spotright.polidoro.model.Operation is either an com.spotright.polidoro.model.Insert, com.spotright.polidoro.model.IncrCounter, com.spotright.polidoro.model.Delete, or a com.spotright.polidoro.model.RowDelete. Operations can be consumed by the
bunchorbatchmethods in the com.spotright.polidoro.SpotAsty object.Predicates
The com.spotright.polidoro.model.ColumnPredicate, com.spotright.polidoro.model.RangePredicate, and com.spotright.polidoro.model.PrefixPredicate concepts are supported. Additional sugar has been provided to make these structures easier to work with. E.g.,
Testing
The SpotAsty object supports the
specTestInitcall for testing which loads an embedded cassandra server. A com.spotright.polidoro.AstyanaxTestPool trait is available as a template to embedding the daemon in tests that use specs2.