org.datavec.api.transform

Interface ColumnOp

All Known Subinterfaces:

AggregableColumnReduction, ColumnCondition, ColumnReduction, Condition, Filter, Transform

All Known Implementing Classes:

AddConstantColumnTransform, AppendStringColumnTransform, BaseColumnComparator, BaseColumnCondition, BaseColumnFilter, BaseColumnsMathOpTransform, BaseColumnTransform, BaseDoubleTransform, BaseIntegerTransform, BaseSequenceExpansionTransform, BaseStringTransform, BaseTransform, BooleanColumnCondition, BooleanCondition, CalculateSortedRank, CategoricalColumnCondition, CategoricalToIntegerTransform, CategoricalToOneHotTransform, ChangeCaseStringTransform, ConcatenateStringColumns, ConditionalCopyValueTransform, ConditionalReplaceValueTransform, ConditionalReplaceValueTransformWithDefault, ConditionFilter, ConvertToDouble, ConvertToInteger, ConvertToString, DeriveColumnsFromTimeTransform, DoubleColumnCondition, DoubleColumnsMathOpTransform, DoubleMathFunctionTransform, DoubleMathOpTransform, DuplicateColumnsTransform, FilterInvalidValues, GeographicMidpointReduction, InfiniteColumnCondition, IntegerColumnCondition, IntegerColumnsMathOpTransform, IntegerMathOpTransform, IntegerToCategoricalTransform, IntegerToOneHotTransform, InvalidNumColumns, InvalidValueColumnCondition, Log2Normalizer, LongColumnCondition, LongColumnsMathOpTransform, LongMathOpTransform, MapAllStringsExceptListTransform, MinMaxNormalizer, NaNColumnCondition, NDArrayColumnsMathOpTransform, NDArrayDistanceTransform, NDArrayMathFunctionTransform, NDArrayScalarOpTransform, NullWritableColumnCondition, NumericalColumnComparator, ParseDoubleTransform, PivotTransform, ReduceSequenceByWindowTransform, ReduceSequenceTransform, RemoveAllColumnsExceptForTransform, RemoveColumnsTransform, RemoveWhiteSpaceTransform, RenameColumnsTransform, ReorderColumnsTransform, ReplaceEmptyIntegerWithValueTransform, ReplaceEmptyStringTransform, ReplaceInvalidWithIntegerTransform, ReplaceStringTransform, SequenceDifferenceTransform, SequenceLengthCondition, SequenceMovingWindowReduceTransform, SequenceOffsetTransform, SequenceTrimTransform, StandardizeNormalizer, StringColumnCondition, StringComparator, StringListToCategoricalSetTransform, StringListToCountsNDArrayTransform, StringListToIndicesNDArrayTransform, StringMapTransform, StringRegexColumnCondition, StringToCategoricalTransform, StringToTimeTransform, SubtractMeanNormalizer, TextToCharacterIndexTransform, TextToTermIndexSequenceTransform, TimeColumnCondition, TimeMathOpTransform, TrivialColumnCondition

public interface ColumnOp

ColumnOp is a transform meant to run over 1 or more columns

Author:

Adam Gibson

Method Summary

Modifier and Type	Method and Description
String	columnName() Returns a singular column name this op is meant to run on
String[]	columnNames() Returns column names this op is meant to run on
Schema	getInputSchema() Getter for input schema
String	outputColumnName() The output column name after the operation has been applied
String[]	outputColumnNames() The output column names This will often be the same as the input
void	setInputSchema(Schema inputSchema) Set the input schema.
Schema	transform(Schema inputSchema) Get the output schema for this transformation, given an input schema

Method Detail

transform

Schema transform(Schema inputSchema)

Get the output schema for this transformation, given an input schema

setInputSchema

void setInputSchema(Schema inputSchema)

Set the input schema.

getInputSchema

Schema getInputSchema()

Getter for input schema

Returns:

outputColumnName

String outputColumnName()

The output column name after the operation has been applied

Returns:

the output column name

outputColumnNames

String[] outputColumnNames()

The output column names This will often be the same as the input

Returns:

the output column names

columnNames

String[] columnNames()

Returns column names this op is meant to run on

Returns:

columnName

String columnName()

Returns a singular column name this op is meant to run on

Returns: