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vendor/doctrine/persistence/src/Persistence/Mapping/Driver/MappingDriverChain.php

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+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Persistence\Mapping\Driver;
+
+use Doctrine\Persistence\Mapping\ClassMetadata;
+use Doctrine\Persistence\Mapping\MappingException;
+
+use function array_keys;
+use function spl_object_hash;
+use function strpos;
+
+/**
+ * The DriverChain allows you to add multiple other mapping drivers for
+ * certain namespaces.
+ */
+class MappingDriverChain implements MappingDriver
+{
+    /**
+     * The default driver.
+     *
+     * @var MappingDriver|null
+     */
+    private $defaultDriver;
+
+    /** @var array<string, MappingDriver> */
+    private $drivers = [];
+
+    /**
+     * Gets the default driver.
+     *
+     * @return MappingDriver|null
+     */
+    public function getDefaultDriver()
+    {
+        return $this->defaultDriver;
+    }
+
+    /**
+     * Set the default driver.
+     *
+     * @return void
+     */
+    public function setDefaultDriver(MappingDriver $driver)
+    {
+        $this->defaultDriver = $driver;
+    }
+
+    /**
+     * Adds a nested driver.
+     *
+     * @return void
+     */
+    public function addDriver(MappingDriver $nestedDriver, string $namespace)
+    {
+        $this->drivers[$namespace] = $nestedDriver;
+    }
+
+    /**
+     * Gets the array of nested drivers.
+     *
+     * @return array<string, MappingDriver> $drivers
+     */
+    public function getDrivers()
+    {
+        return $this->drivers;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function loadMetadataForClass(string $className, ClassMetadata $metadata)
+    {
+        foreach ($this->drivers as $namespace => $driver) {
+            if (strpos($className, $namespace) === 0) {
+                $driver->loadMetadataForClass($className, $metadata);
+
+                return;
+            }
+        }
+
+        if ($this->defaultDriver !== null) {
+            $this->defaultDriver->loadMetadataForClass($className, $metadata);
+
+            return;
+        }
+
+        throw MappingException::classNotFoundInNamespaces($className, array_keys($this->drivers));
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getAllClassNames()
+    {
+        $classNames    = [];
+        $driverClasses = [];
+
+        foreach ($this->drivers as $namespace => $driver) {
+            $oid = spl_object_hash($driver);
+
+            if (! isset($driverClasses[$oid])) {
+                $driverClasses[$oid] = $driver->getAllClassNames();
+            }
+
+            foreach ($driverClasses[$oid] as $className) {
+                if (strpos($className, $namespace) !== 0) {
+                    continue;
+                }
+
+                $classNames[$className] = true;
+            }
+        }
+
+        if ($this->defaultDriver !== null) {
+            foreach ($this->defaultDriver->getAllClassNames() as $className) {
+                $classNames[$className] = true;
+            }
+        }
+
+        return array_keys($classNames);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function isTransient(string $className)
+    {
+        foreach ($this->drivers as $namespace => $driver) {
+            if (strpos($className, $namespace) === 0) {
+                return $driver->isTransient($className);
+            }
+        }
+
+        if ($this->defaultDriver !== null) {
+            return $this->defaultDriver->isTransient($className);
+        }
+
+        return true;
+    }
+}