Precedence enum Null safety

Used to order the precedence of sql expressions so that we can avoid unnecessary parens when generating sql statements.

Inheritance

• Object
• Enum
• Precedence

Implemented types

• Comparable<Precedence>

Values

unknown → const Precedence

Precedence is unknown, assume lowest. This can be used for a CustomExpression to always put parens around it.

Precedence._(-1)

or → const Precedence

Precedence for the OR operator in sql

Precedence._(10)

and → const Precedence

Precedence for the AND operator in sql

Precedence._(11)

comparisonEq → const Precedence

Precedence for most of the comparisons operators in sql, including equality, is (not) checks, in, like, glob, match, regexp.

Precedence._(12)

comparison → const Precedence

Precedence for the <, <=, >, >= operators in sql

Precedence._(13)

bitwise → const Precedence

Precedence for bitwise operators in sql

Precedence._(14)

plusMinus → const Precedence

Precedence for the (binary) plus and minus operators in sql

Precedence._(15)

mulDivide → const Precedence

Precedence for the *, / and % operators in sql

Precedence._(16)

stringConcatenation → const Precedence

Precedence for the || operator in sql

Precedence._(17)

unary → const Precedence

Precedence for unary operators in sql

Precedence._(20)

postfix → const Precedence

Precedence for postfix operators (like collate) in sql

Precedence._(21)

primary → const Precedence

Highest precedence in sql, used for variables and literals.

Precedence._(100)

Properties

hashCode → int

The hash code for this object.

read-only, inherited

index → int

A numeric identifier for the enumerated value.

read-only, inherited

runtimeType → Type

A representation of the runtime type of the object.

read-only, inherited

Methods

compareTo(Precedence other) → int

Compares this object to another object.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a non-existent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator <(Precedence other) → bool

Returns true if this Precedence is lower than other.

operator <=(Precedence other) → bool

Returns true if this Precedence is lower or equal to other.

operator ==(Object other) → bool

The equality operator.

inherited

operator >(Precedence other) → bool

Returns true if this Precedence is higher than other.

operator >=(Precedence other) → bool

Returns true if this Precedence is higher or equal to other.

Constants

values → const List<Precedence>

A constant List of the values in this enum, in order of their declaration.

[unknown, or, and, comparisonEq, comparison, bitwise, plusMinus, mulDivide, stringConcatenation, unary, postfix, primary]