Although it looked like a good idea in the first place, the current
feature of the library is probably powerful enough for most cases
without having to use a custom `ObjectBuilder`.
If for some reason keeping this interface open for custom
implementations, a revert could be considered.
The following annotations are now properly handled: `@psalm-param`,
`@phpstan-param`, `@psalm-return` and `@phpstan-return`.
If one of those found along with a basic `@param` or `@return`
annotation, it will override the basic value.
The `Source` class is a new entry point for sources that are not plain
array or iterable. It allows accessing other features like camel-case
keys or custom paths mapping in a convenient way.
It should be used as follows:
```php
$source = \CuyZ\Valinor\Mapper\Source\Source::json($jsonString)
->camelCaseKeys()
->map([
'towns' => 'cities',
'towns.*.label' => 'name',
]);
$result = (new \CuyZ\Valinor\MapperBuilder())
->mapper()
->map(SomeClass::class, $source);
```
It is now mandatory to explicitly register custom constructors —
including named constructors — that can be used by the mapper. The
former automatic registration of named constructor feature doesn't
work anymore.
BREAKING CHANGE: existing code must list all named constructors that
were previously automatically used by the mapper, and registerer them
using the method `MapperBuilder::registerConstructor()`.
The method `MapperBuilder::bind()` has been deprecated, the method above
should be used instead.
```php
final class SomeClass
{
public static function namedConstructor(string $foo): self
{
// …
}
}
(new \CuyZ\Valinor\MapperBuilder())
->registerConstructor(
SomeClass::namedConstructor(...),
// …or for PHP < 8.1:
[SomeClass::class, 'namedConstructor'],
)
->mapper()
->map(SomeClass::class, [
// …
]);
```
This modifier can be used to change paths in the source data using a dot
notation.
The mapping is done using an associative array of path mappings. This
array must have the source path as key and the target path as value.
The source path uses the dot notation (eg `A.B.C`) and can contain one
`*` for array paths (eg `A.B.*.C`).
```php
final class Country
{
/** @var City[] */
public readonly array $cities;
}
final class City
{
public readonly string $name;
}
$source = new \CuyZ\Valinor\Mapper\Source\Modifier\PathMapping([
'towns' => [
['label' => 'Ankh Morpork'],
['label' => 'Minas Tirith'],
],
], [
'towns' => 'cities',
'towns.*.label' => 'name',
]);
// After modification this is what the source will look like:
[
'cities' => [
['name' => 'Ankh Morpork'],
['name' => 'Minas Tirith'],
],
];
(new \CuyZ\Valinor\MapperBuilder())
->mapper()
->map(Country::class, $source);
```
The method `MapperBuilder::infer()` can be used to infer an
implementation for a given interface.
The callback given to this method must return the name of a class that
implements the interface. Any arguments can be required by the callback;
they will be mapped properly using the given source.
```php
$mapper = (new \CuyZ\Valinor\MapperBuilder())
->infer(UuidInterface::class, fn () => MyUuid::class)
->infer(SomeInterface::class, fn (string $type) => match($type) {
'first' => FirstImplementation::class,
'second' => SecondImplementation::class,
default => throw new DomainException("Unhandled type `$type`.")
})->mapper();
// Will return an instance of `FirstImplementation`
$mapper->map(SomeInterface::class, [
'type' => 'first',
'uuid' => 'a6868d61-acba-406d-bcff-30ecd8c0ceb6',
'someString' => 'foo',
]);
// Will return an instance of `SecondImplementation`
$mapper->map(SomeInterface::class, [
'type' => 'second',
'uuid' => 'a6868d61-acba-406d-bcff-30ecd8c0ceb6',
'someInt' => 42,
]);
interface SomeInterface {}
final class FirstImplementation implements SomeInterface
{
public readonly UuidInterface $uuid;
public readonly string $someString;
}
final class SecondImplementation implements SomeInterface
{
public readonly UuidInterface $uuid;
public readonly int $someInt;
}
```
