water.udf

Interface ColumnFactory<T>

All Superinterfaces:

ChunkFactory<T>, Function<Chunk,DataChunk<T>>, java.io.Serializable

All Known Implementing Classes:

DataColumns.BaseFactory, Dates, Doubles, Enums, Strings

public interface ColumnFactory<T>
extends ChunkFactory<T>

General-case factory for columns

Method Summary

Modifier and Type	Method and Description
Vec	buildZeroVec(long length)
DataColumn<T>	materialize(Column<T> xs)
DataColumn<T>	newColumn(java.util.List<T> xs)
DataColumn<T>	newColumn(long length, Function<java.lang.Long,T> f)
DataColumn<T>	newColumn(Vec vec)

Methods inherited from interface water.udf.ChunkFactory

typeCode

Methods inherited from interface water.util.fp.Function

apply

Method Detail

newColumn

DataColumn<T> newColumn(Vec vec)

newColumn

DataColumn<T> newColumn(long length,
                        Function<java.lang.Long,T> f)
                 throws java.io.IOException

Throws:

java.io.IOException

newColumn

DataColumn<T> newColumn(java.util.List<T> xs)
                 throws java.io.IOException

Throws:

java.io.IOException

materialize

DataColumn<T> materialize(Column<T> xs)
                   throws java.io.IOException

Throws:

java.io.IOException

buildZeroVec

Vec buildZeroVec(long length)