Package water.udf

Interface Summary

Interface	Description
ChunkFactory<DataType>	This factory creates a TypedChunk; there's a variety of data sources, can be a materialized Chunk, or a function.
CMetricFunc	Custom metric evaluation function.
Column<T>	Generic typed data column This is a type-aware representation of id -> value accessors.
ColumnFactory<T>	General-case factory for columns
TypedChunk<T>	Represents a chunk that knows its type

Class Summary

Class	Description
CFuncLoader	Custom function loader interface.
CFuncLoaderService	Loader for custom function providers.
CFuncRef
CFuncTask<T extends water.udf.CFunc,S extends CFuncTask<T,S>>	Low-level MRTask to invoke given function stored in DKV.
ColumnBase<T>	Basic common behavior for Functional Columns
DataChunk<T>	Wrapper of a chunk that knows its type, with mutability
DataColumn<T>	A Column based on actual data in a Vec (hence implementing Vec.Holder)
DataColumns	An adapter to Vec, allows type-safe access to data
DataColumns.BaseFactory<T>
DependentChunk<T>	Represents a chunk that depends on another
FoldingColumn<X,Y>	This column depends a plurality of columns
Fun2Column<X,Y,Z>	This column depends on two other columns
Fun3Column<X,Y,Z,T>	This column depends on three other columns
FunColumn<X,Y>	This column depends on another column
FunColumnBase<T>	Basic common behavior for Functional Columns
JavaCFuncLoader	Custom function loader of java-based function.
TypedFrame<X>	Single column frame that knows its data type
TypedFrame.EnumFrame
UnfoldingColumn<X,Y>	This column depends a plurality of columns
UnfoldingFrame<X>	Single-column frame that knows its data type and can unfold