vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php

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<?php
/*
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the MIT license. For more information, see
 * <http://www.doctrine-project.org>.
 */

namespace Doctrine\ORM\Mapping;

use BadMethodCallException;
use InvalidArgumentException;
use RuntimeException;
use Doctrine\DBAL\Types\Type;
use ReflectionClass;
use Doctrine\Common\Persistence\Mapping\ClassMetadata;
use Doctrine\Common\ClassLoader;
use Doctrine\Common\EventArgs;

/**
 * A <tt>ClassMetadata</tt> instance holds all the object-relational mapping metadata
 * of an entity and its associations.
 *
 * Once populated, ClassMetadata instances are usually cached in a serialized form.
 *
 * <b>IMPORTANT NOTE:</b>
 *
 * The fields of this class are only public for 2 reasons:
 * 1) To allow fast READ access.
 * 2) To drastically reduce the size of a serialized instance (private/protected members
 *    get the whole class name, namespace inclusive, prepended to every property in
 *    the serialized representation).
 *
 * @author Roman Borschel <roman@code-factory.org>
 * @author Jonathan H. Wage <jonwage@gmail.com>
 * @since 2.0
 */
class ClassMetadataInfo implements ClassMetadata
{
    /* The inheritance mapping types */
    /**
     * NONE means the class does not participate in an inheritance hierarchy
     * and therefore does not need an inheritance mapping type.
     */
    const INHERITANCE_TYPE_NONE = 1;

    /**
     * JOINED means the class will be persisted according to the rules of
     * <tt>Class Table Inheritance</tt>.