QueryExpression<T, InstanceType> class
Null safety
Contains methods for adding logical expressions to properties when building a Query.
You do not create instances of this type directly, but instead are returned an instance when selecting a property of an object in Query.where. You invoke methods from this type to add an expression to the query for the selected property. Example:
final query = new Query<Employee>()
..where((e) => e.name).equalTo("Bob");
Constructors
- QueryExpression(KeyPath keyPath)
-
QueryExpression.byAddingKey(QueryExpression<
T, InstanceType> original, ManagedPropertyDescription byAdding)
Properties
- expression ↔ PredicateExpression?
-
read / write
- hashCode → int
-
The hash code for this object.
read-onlyinherited
- keyPath → KeyPath
-
final
-
not
→ QueryExpression<
T, InstanceType> -
Inverts the next expression.
read-only
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
Methods
-
beginsWith(
String value, {bool caseSensitive = true}) → QueryExpressionJunction< T, InstanceType> - Adds a 'begins with string' expression to a query.
-
between(
T lhs, T rhs) → QueryExpressionJunction< T, InstanceType> - Adds a 'between two values' expression to a query.
-
contains(
String value, {bool caseSensitive = true}) → QueryExpressionJunction< T, InstanceType> - Adds a 'contains string' expression to a query.
-
endsWith(
String value, {bool caseSensitive = true}) → QueryExpressionJunction< T, InstanceType> - Adds a 'ends with string' expression to a query.
-
equalTo(
T value, {bool caseSensitive = true}) → QueryExpressionJunction< T, InstanceType> - Adds an equality expression to a query.
-
greaterThan(
T value) → QueryExpressionJunction< T, InstanceType> - Adds a 'greater than' expression to a query.
-
greaterThanEqualTo(
T value) → QueryExpressionJunction< T, InstanceType> - Adds a 'greater than or equal to' expression to a query.
-
identifiedBy(
dynamic identifier) → QueryExpressionJunction< T, InstanceType> - Adds an equality expression for foreign key columns to a query.
-
isNotNull(
) → QueryExpressionJunction< T, InstanceType> - Adds a 'not null check' expression to a query.
-
isNull(
) → QueryExpressionJunction< T, InstanceType> - Adds a 'null check' expression to a query.
-
lessThan(
T value) → QueryExpressionJunction< T, InstanceType> - Adds a 'less than' expression to a query.
-
lessThanEqualTo(
T value) → QueryExpressionJunction< T, InstanceType> - Adds a 'less than or equal to' expression to a query.
-
like(
String value, {bool caseSensitive = true}) → QueryExpressionJunction< T, InstanceType> - Adds a like expression to a query.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited
-
notEqualTo(
T value, {bool caseSensitive = true}) → QueryExpressionJunction< T, InstanceType> - Adds a 'not equal' expression to a query.
-
notLike(
String value, {bool caseSensitive = true}) → QueryExpressionJunction< T, InstanceType> - Adds a 'not like' expression to a query.
-
oneOf(
Iterable< T> values) → QueryExpressionJunction<T, InstanceType> - Adds a 'equal to one of' expression to a query.
-
outsideOf(
T lhs, T rhs) → QueryExpressionJunction< T, InstanceType> - Adds a 'outside of the range crated by two values' expression to a query.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited