ModelDBImpl class

An implementation of ModelDB based on model class annotations.

The two constructors will scan loaded dart libraries for classes with a Kind annotation.

An example on how to write a model class is: @Kind class Person extends db.Model { @StringProperty String name;

  @IntProperty
  int age;

  @DateTimeProperty
  DateTime dateOfBirth;
}

These classes must either extend Model or ExpandoModel. Furthermore they must have an empty default constructor which can be used to construct model objects when doing lookups/queries from datastore.

Implemented types

• ModelDB

Constructors

ModelDBImpl()

Initializes a new ModelDB from all libraries.

ModelDBImpl.fromLibrary(Symbol librarySymbol)

Initializes a new ModelDB from all libraries.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

fieldNameToPropertyName(String kind, String fieldName) → String?

Returns the name of the property corresponding to the kind kind and fieldName.

override

fromDatastoreEntity<T extends Model>(Entity? entity) → T?

Converts a ds.Entity to a Model instance.

override

fromDatastoreKey(Key datastoreKey) → Key

Converts a ds.Key to a Key. The key returned will have the correct id type which is either Key<String> or Key<int>.

override

kindName(Type type) → String

Returns the string representation of the kind of model class type.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toDatastoreEntity(Model model) → Entity

Converts a Model instance to a ds.Entity.

override

toDatastoreKey(Key dbKey) → Key

Converts a Key to a ds.Key.

override

toDatastoreValue(String kind, String fieldName, Object? value, {bool forComparison = false}) → Object?

Converts value according to the Property named name in type.

override

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

hasDefaultConstructor(ClassMirror classMirror) → bool

Returns true if the specified classMirror has a default (unnamed) constructor that accepts an empty arguments list.