Expression class abstract

Represents an expression that is either static or evaluated for every individual dataset and evaluates into a value.

See: ValueExpression DataField

Implementers
Available extensions

Constructors

Expression.new()
const
Expression.dynamic(dynamic expression)
This factory constructor checks if the value is an expression itself or returns a ValueExpression that wraps the given value otherwise.
factory

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

asc() → Sort

Available on Expression, provided by the ExpressionExtension extension

Creates a Sort that orders ascending by this expression.
contains(dynamic other) → Filter

Available on Expression, provided by the ExpressionExtension extension

Convenience method for creating a CompareFilter which matches if this contains other.
desc() → Sort

Available on Expression, provided by the ExpressionExtension extension

Creates a Sort that orders descending by this expression.
equals(dynamic other) → Filter

Available on Expression, provided by the ExpressionExtension extension

Convenience method for creating a CompareFilter which matches if this equals other.
greaterOrEqual(dynamic other) → Filter

Available on Expression, provided by the ExpressionExtension extension

Convenience method for creating a CompareFilter which matches if this is greater than or equals other.
greaterThan(dynamic other) → Filter

Available on Expression, provided by the ExpressionExtension extension

Convenience method for creating a CompareFilter which matches if this is greater than other.
isIn(dynamic other) → Filter

Available on Expression, provided by the ExpressionExtension extension

Convenience method for creating a CompareFilter which matches if this is in other.
lessOrEqual(dynamic other) → Filter

Available on Expression, provided by the ExpressionExtension extension

Convenience method for creating a CompareFilter which matches if this is less than or equals other.
lessThan(dynamic other) → Filter

Available on Expression, provided by the ExpressionExtension extension

Convenience method for creating a CompareFilter which matches if this is less than other.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notEquals(dynamic other) → Filter

Available on Expression, provided by the ExpressionExtension extension

Convenience method for creating a CompareFilter which matches if this does not equal other.
sort(bool ascending) → Sort

Available on Expression, provided by the ExpressionExtension extension

Creates a Sort that orders by this expression.
toString() → String
A string representation of this object.
inherited

Operators

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