ProjectableListFields

Domain objects in the DSL can allow access to their fields through projections. This trait signals the support of field projections and provides a convenience method to create these projections. This trait is meant for Lists of objects to project a List of traits back.

Here's an example:

case class Person(val name: String)

class PersonFieldListProjections(personFact: ListFact[Person]) extends ProjectableListFields[Person] {
  def outerFact: Fact[Person] = personFact

  def name: DslEvaluation[String] = projectField( _.name )
}

object PersonImplicits {
  implicit def toPersonFieldListProjections(personFact: ListFact[Person]): PersonListFieldProjections = new PersonListFieldProjections(personFact)
}

With these elements in place, you can import the PersonImplicits._ where you want to use it in your DSL and you can refer to the name field of any Fact of type Person.

C: type from which the field(s) can be projected.

Linear Supertypes

AnyRef, Any

Abstract Value Members

abstract def outerFact: ListFact[C]

Any implementing class should provide the fact from which to project the fields through this method.
Any implementing class should provide the fact from which to project the fields through this method.
returns
the ListFact of type C from which fields will be projected.

Attributes
protected

Concrete Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
def projectField[F](f: (C) ⇒ F): ProjectedDslEvaluation[C, F]

Provides a utility method to construct the DslEvaluation which entails the field projection.
Provides a utility method to construct the DslEvaluation which entails the field projection.
F
type of the projected field, which will also be the type of the resulting DslEvaluation.
f
the function which projects the Fact's value to the corresponding field of type F.
returns
a DslEvaluation of the same type as the projected field. This evaluation will at runtime provide the value of the projected field of the accompanying Fact.

Attributes
protected
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )

Related Doc: package projections

trait ProjectableListFields[C] extends AnyRef

Abstract Value Members

abstract def outerFact: ListFact[C]

Concrete Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

def projectField[F](f: (C) ⇒ F): ProjectedDslEvaluation[C, F]

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from AnyRef

Inherited from Any

Ungrouped