data mapper POC

[m6w6/pq-gateway] / lib / pq / Mapper / Mapper.php

diff --git a/lib/pq/Mapper/Mapper.php b/lib/pq/Mapper/Mapper.php
new file mode 100644 (file)
index 0000000..725a50c
--- /dev/null
+++ b/lib/pq/Mapper/Mapper.php
@@ -0,0 +1,83 @@
+<?php
+
+namespace pq\Mapper;
+
+use UnexpectedValueException;
+
+class Mapper
+{
+       private $maps;
+       private $refp;
+
+       /**
+        * @param \pq\Mapper\MapInterface $map
+        * @return \pq\Mapper\Mapper
+        */
+       function register(MapInterface $map) {
+               $this->maps[$map->getClass()] = $map;
+               return $this;
+       }
+
+       function getReflector($class, $prop) {
+               if (is_object($class)) {
+                       $class = get_class($class);
+               }
+               $hash = "$class::$prop";
+               if (!isset($this->refp[$hash])) {
+                       $this->refp[$hash] = new \ReflectionProperty($class, $prop);
+                       $this->refp[$hash]->setAccessible(true);
+               }
+               return $this->refp[$hash];
+       }
+
+       /**
+        * @param string $class
+        * @return \pq\Mapper\MapInterface
+        * @throws UnexpectedValueException
+        */
+       function mapOf($class) {
+               if (is_object($class)) {
+                       $class = get_class($class);
+               }
+               if (!isset($this->maps[$class])) {
+                       if (!is_callable([$class, "mapAs"])) {
+                               throw new UnexpectedValueException("Not a mapped class: '$class'");
+                       }
+                       $this->register($class::mapAs($this));
+               }
+               return $this->maps[$class];
+       }
+
+       /**
+        * @param string $class
+        * @return \pq\Mapper\Storage
+        */
+       function createStorage($class) {
+               return new Storage($this, $class);
+       }
+
+       /**
+        * @param string $property
+        * @param string $field
+        * @return \pq\Mapper\Property\Field
+        */
+       function mapField($property, $field = null) {
+               return new Property\Field($this, $property, $field);
+       }
+
+       /**
+        * @param string $property
+        * @return \pq\Mapper\Property\All
+        */
+       function mapAll($property) {
+               return new Property\All($this, $property);
+       }
+
+       /**
+        * @param string $property
+        * @return \pq\Mapper\Property\Ref
+        */
+       function mapRef($property) {
+               return new Property\Ref($this, $property);
+       }
+}