ColumnHalfVector class

A Column holding a HalfVector from pgvector.

Inheritance

Constructors

ColumnHalfVector.new(String columnName, Table table, {required int dimension, bool hasDefault = false})
Creates a new Column, this is typically done in generated code only.

Properties

columnName → String
Name of the Column.
no setterinherited
dimension → int
The dimension of the half vector (number of elements).
final
hasDefault → bool
flag to tell if this Column has any default value
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
queryAlias → String
Query alias for the Column.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
table → Table
Table that column belongs to.
finalinherited
type → Type
Corresponding dart Type.
finalinherited

Methods

distanceCosine(HalfVector other) → ColumnVectorDistance<HalfVector>
Computes the cosine distance between this vector column and another vector.
inherited
distanceInnerProduct(HalfVector other) → ColumnVectorDistance<HalfVector>
Computes the inner product distance between this vector column and another vector.
inherited
distanceL1(HalfVector other) → ColumnVectorDistance<HalfVector>
Computes the L1 (Manhattan) distance between this vector column and another vector.
inherited
distanceL2(HalfVector other) → ColumnVectorDistance<HalfVector>
Computes the L2 (Euclidean) distance between this vector column and another vector.
inherited
equals(HalfVector value) → Expression
Creates an Expression checking if the value in the column equals the specified value.
inherited
inSet(Set<HalfVector> values) → Expression
Creates and Expression checking if the value in the column is included in the specified set of values. If the set is empty the expression will match no rows.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notEquals(HalfVector value) → Expression
Creates an Expression checking if the value in the column does not equal the specified value.
inherited
notInSet(Set<HalfVector> values) → Expression
Creates and Expression checking if the value in the column is NOT included in the specified set of values. If the set is empty the expression will match all rows.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited