/**
* Converts {@link OperatorPortDeclaration} into a member of {@link OperatorInfo}.
*
* @param var target port declaration
* @param position the factory parameter position
* @return related meta-data
* @throws IllegalArgumentException if some parameters were {@code null}
*/
public Expression toMetaData(OperatorPortDeclaration var, int position) {
Precondition.checkMustNotBeNull(var, "var"); // $NON-NLS-1$
NamedType type;
TypeMirror representation = var.getType().getRepresentation();
List<AnnotationElement> members = new ArrayList<>();
members.add(
factory.newAnnotationElement(
factory.newSimpleName("name"), // $NON-NLS-1$
Models.toLiteral(factory, var.getName())));
members.add(
factory.newAnnotationElement(
factory.newSimpleName("type"), // $NON-NLS-1$
factory.newClassLiteral(t(environment.getErasure(representation)))));
if (var.getKind() == OperatorPortDeclaration.Kind.INPUT) {
type = (NamedType) t(OperatorInfo.Input.class);
members.add(
factory.newAnnotationElement(
factory.newSimpleName("position"), // $NON-NLS-1$
Models.toLiteral(factory, position)));
String typeVariable = getTypeVariableName(representation);
if (typeVariable != null) {
members.add(
factory.newAnnotationElement(
factory.newSimpleName("typeVariable"), // $NON-NLS-1$
Models.toLiteral(factory, typeVariable)));
}
} else if (var.getKind() == OperatorPortDeclaration.Kind.OUTPUT) {
type = (NamedType) t(OperatorInfo.Output.class);
String typeVariable = getTypeVariableName(representation);
if (typeVariable != null) {
members.add(
factory.newAnnotationElement(
factory.newSimpleName("typeVariable"), // $NON-NLS-1$
Models.toLiteral(factory, typeVariable)));
}
} else if (var.getKind() == OperatorPortDeclaration.Kind.CONSTANT) {
type = (NamedType) t(OperatorInfo.Parameter.class);
members.add(
factory.newAnnotationElement(
factory.newSimpleName("position"), // $NON-NLS-1$
Models.toLiteral(factory, position)));
String typeVariable = getTypeVariableNameInClass(representation);
if (typeVariable != null) {
members.add(
factory.newAnnotationElement(
factory.newSimpleName("typeVariable"), // $NON-NLS-1$
Models.toLiteral(factory, typeVariable)));
}
} else {
throw new AssertionError(var);
}
return factory.newNormalAnnotation(type, members);
}
/**
* Converts {@link OperatorPortDeclaration} into an operator factory method parameter.
*
* @param var target port declaration
* @param name the actual parameter name
* @return related parameter declaration
* @throws IllegalArgumentException if some parameters were {@code null}
*/
public FormalParameterDeclaration toFactoryMethodInput(
OperatorPortDeclaration var, SimpleName name) {
Precondition.checkMustNotBeNull(var, "var"); // $NON-NLS-1$
Precondition.checkMustNotBeNull(name, "name"); // $NON-NLS-1$
AttributeBuilder attributes = new AttributeBuilder(factory);
ShuffleKey key = var.getShuffleKey();
if (key != null) {
List<Expression> group = new ArrayList<>();
for (String entry : key.getGroupProperties()) {
group.addAll(
new AttributeBuilder(factory)
.annotation(
t(KeyInfo.Group.class),
"expression", //$NON-NLS-1$
Models.toLiteral(factory, entry))
.toAnnotations());
}
List<Expression> order = new ArrayList<>();
for (ShuffleKey.Order entry : key.getOrderings()) {
order.addAll(
new AttributeBuilder(factory)
.annotation(
t(KeyInfo.Order.class),
"direction",
new TypeBuilder(factory, t(KeyInfo.Direction.class)) // $NON-NLS-1$
.field(entry.getDirection().name())
.toExpression(),
"expression",
Models.toLiteral(factory, entry.getProperty())) // $NON-NLS-1$
.toAnnotations());
}
attributes.annotation(
t(KeyInfo.class),
"group",
factory.newArrayInitializer(group), // $NON-NLS-1$
"order",
factory.newArrayInitializer(order)); // $NON-NLS-1$
}
return factory.newFormalParameterDeclaration(
attributes.toAttributes(), toSourceType(var.getType().getRepresentation()), false, name, 0);
}