smile.data.vector

Interface Vector<T>

All Superinterfaces:

BaseVector<T,T,java.util.stream.Stream<T>>, java.io.Serializable

All Known Subinterfaces:

StringVector

public interface Vector<T>
extends BaseVector<T,T,java.util.stream.Stream<T>>

An immutable generic vector.

Method Summary

Modifier and Type	Method and Description
default boolean	anyNull() Returns true if there are any NULL values in this row.
default java.util.List<T>	distinct() Returns the distinct values.
Vector<T>	get(int... index) Returns a new vector with selected entries.
default byte	getByte(int i) Returns the byte value at position i.
default double	getDouble(int i) Returns the double value at position i.
default float	getFloat(int i) Returns the float value at position i.
default int	getInt(int i) Returns the integer value at position i.
default long	getLong(int i) Returns the long value at position i.
default short	getShort(int i) Returns the short value at position i.
default boolean	isNullAt(int i) Checks whether the value at position i is null.
static <T> Vector<T>	of(java.lang.String name, java.lang.Class clazz, T[] vector) Creates a named vector.
static <T> Vector<T>	of(java.lang.String name, DataType type, T[] vector) Creates a named vector.
static <T> Vector	of(StructField field, T[] vector) Creates a named vector.
T[]	toArray() Returns the array of elements.
Vector<java.time.LocalDate>	toDate() Returns a vector of LocalDate.
Vector<java.time.LocalDateTime>	toDateTime() Returns a vector of LocalDateTime.
default java.lang.String	toString(int n) Returns the string representation of vector.
Vector<java.time.LocalTime>	toTime() Returns a vector of LocalTime.

Methods inherited from interface smile.data.vector.BaseVector

apply, apply, array, field, get, measure, name, size, stream, toDoubleArray, toDoubleArray, toIntArray, toIntArray, toStringArray, toStringArray, type

Method Detail

get

Vector<T> get(int... index)

Description copied from interface: BaseVector

Returns a new vector with selected entries.

Specified by:

get in interface BaseVector<T,T,java.util.stream.Stream<T>>

Parameters:

index - the index of selected entries.

toArray

T[] toArray()

Returns the array of elements.

toDate

Vector<java.time.LocalDate> toDate()

Returns a vector of LocalDate. If the vector is of strings, it uses the default ISO date formatter that parses a date without an offset, such as '2011-12-03'. If the vector is of other time related objects such as Instant, java.util.Date, java.sql.Timestamp, etc., do a proper conversion.

toTime

Vector<java.time.LocalTime> toTime()

Returns a vector of LocalTime. If the vector is of strings, it uses the default ISO time formatter that parses a time without an offset, such as '10:15' or '10:15:30'. If the vector is of other time related objects such as Instant, java.util.Date, java.sql.Timestamp, etc., do a proper conversion.

toDateTime

Vector<java.time.LocalDateTime> toDateTime()

Returns a vector of LocalDateTime. If the vector is of strings, it uses the default ISO date time formatter that parses a date without an offset, such as '2011-12-03T10:15:30'. If the vector is of other time related objects such as Instant, java.util.Date, java.sql.Timestamp, etc., do a proper conversion.

distinct

default java.util.List<T> distinct()

Returns the distinct values.

getByte

default byte getByte(int i)

Description copied from interface: BaseVector

Returns the byte value at position i.

Specified by:

getByte in interface BaseVector<T,T,java.util.stream.Stream<T>>

getShort

default short getShort(int i)

Description copied from interface: BaseVector

Returns the short value at position i.

Specified by:

getShort in interface BaseVector<T,T,java.util.stream.Stream<T>>

getInt

default int getInt(int i)

Description copied from interface: BaseVector

Returns the integer value at position i.

Specified by:

getInt in interface BaseVector<T,T,java.util.stream.Stream<T>>

getLong

default long getLong(int i)

Description copied from interface: BaseVector

Returns the long value at position i.

Specified by:

getLong in interface BaseVector<T,T,java.util.stream.Stream<T>>

getFloat

default float getFloat(int i)

Description copied from interface: BaseVector

Returns the float value at position i.

Specified by:

getFloat in interface BaseVector<T,T,java.util.stream.Stream<T>>

getDouble

default double getDouble(int i)

Description copied from interface: BaseVector

Returns the double value at position i.

Specified by:

getDouble in interface BaseVector<T,T,java.util.stream.Stream<T>>

isNullAt

default boolean isNullAt(int i)

Checks whether the value at position i is null.

anyNull

default boolean anyNull()

Returns true if there are any NULL values in this row.

toString

default java.lang.String toString(int n)

Returns the string representation of vector.

Parameters:

n - Number of elements to show

of

static <T> Vector<T> of(java.lang.String name,
                        java.lang.Class clazz,
                        T[] vector)

Creates a named vector.

Parameters:

name - the name of vector.

clazz - the class of data type.

vector - the data of vector.

of

static <T> Vector<T> of(java.lang.String name,
                        DataType type,
                        T[] vector)

Creates a named vector.

Parameters:

name - the name of vector.

type - the data type of vector.

vector - the data of vector.

of

static <T> Vector of(StructField field,
                     T[] vector)

Creates a named vector.

Parameters:

field - the struct field of vector.

vector - the data of vector.