JMSSerializerBundle/Serializer/Naming/CacheNamingStrategy.php

<?php

/*
 * Copyright 2011 Johannes M. Schmitt <schmittjoh@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

namespace JMS\SerializerBundle\Serializer\Naming;

use JMS\SerializerBundle\Metadata\PropertyMetadata;

class CacheNamingStrategy implements PropertyNamingStrategyInterface
{
    private $delegate;
    private $cache;

    public function __construct(PropertyNamingStrategyInterface $delegate)
    {
        $this->delegate = $delegate;
        $this->cache = new \SplObjectStorage();
    }

    public function translateName(PropertyMetadata $property)
    {
        if (isset($this->cache[$property])) {
            return $this->cache[$property];
        }

        return $this->cache[$property] = $this->delegate->translateName($property);
    }
}