<?php

// register autoloaders, etc.

use Propel\Builder\ORM\BaseActiveRecord;
use Doctrine\ORM\Mapping\ClassMetadataInfo;

$metadata = new ClassMetadataInfo('Bookstore\\Book');
$metadata->mapField(array('fieldName' => 'id', 'type' => 'integer', 'id' => true));
$metadata->mapField(array('fieldName' => 'name', 'type' => 'string'));
$metadata->mapField(array('fieldName' => 'status', 'type' => 'string', 'default' => 'published'));
// more metadata description...

$builder = new BaseActiveRecord($metadata);
echo $builder->getCode();

<?php

namespace Bookstore\Base;

use Doctrine\ORM\Mapping\ClassMetadata;
use Propel\ActiveEntity;

/**
 * Base class providing ActiveRecord features to Book.
 * Do not modify this class: it will be overwritten each time you regenerate
 * ActiveRecord.
 */
class Book extends ActiveEntity
{
    /**
     * @var integer
     */
    protected $id;

    /**
     * @var string
     */
    protected $name;

    /**
     * @var string
     */
    protected $status = 'published';

    /**
     * @var \Doctrine\Tests\ORM\Tools\EntityGeneratorAuthor
     */
    protected $author;

    /**
     * @var \Doctrine\Common\Collections\ArrayCollection
     */
    protected $comments;

    /**
     * Class constructor.
     * Initializes -to-many associations
     */
    public function __construct()
    {
        $this->comments = new \Doctrine\Common\Collections\ArrayCollection();
    }

    /**
     * Get the id
     * 
     * @return integer
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * Set the id
     * 
     * @param integer $id
     */
    public function setId($id)
    {
        $this->id = $id;
    }

    /**
     * Get the name
     * 
     * @return string
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * Set the name
     * 
     * @param string $name
     */
    public function setName($name)
    {
        $this->name = $name;
    }

    /**
     * Get the status
     * 
     * @return string
     */
    public function getStatus()
    {
        return $this->status;
    }

    /**
     * Set the status
     * 
     * @param string $status
     */
    public function setStatus($status)
    {
        $this->status = $status;
    }

    /**
     * Get the related author
     * 
     * @return \Doctrine\Tests\ORM\Tools\EntityGeneratorAuthor
     */
    public function getAuthor()
    {
        return $this->author;
    }

    /**
     * Set the related author
     * 
     * @param \Doctrine\Tests\ORM\Tools\EntityGeneratorAuthor $author
     */
    public function setAuthor($author)
    {
        $this->author = $author;
    }

    /**
     * Get the collection of related comments
     * 
     * @return \Doctrine\Common\Collections\ArrayCollection
     */
    public function getComments()
    {
        return $this->comments;
    }

    /**
     * Set the collection of related comments
     * 
     * @param \Doctrine\Common\Collections\ArrayCollection $comments
     */
    public function setComments($comments)
    {
        $this->comments = $comments;
    }

    /**
     * Add a comment to the collection of related comments
     * 
     * @param Doctrine\Tests\ORM\Tools\EntityGeneratorComment $comment
     */
    public function addComment($comment)
    {
        $this->comments->add($comment);
    }

    /**
     * Remove a comment from the collection of related comments
     * 
     * @param Doctrine\Tests\ORM\Tools\EntityGeneratorComment $comment
     */
    public function removeComment($comment)
    {
        $this->comments->removeElement($comment);
    }

    /**
     * Set a property of the entity by name passed in as a string
     * 
     * @param string $name  The property name
     * @param mixed  $value The value
     * 
     * @throws \InvalidArgumentException If the property does not exists
     */
    public function setByName($name, $value)
    {
        if ($name === 'id') {
            return $this->setId($value);
        }
        if ($name === 'name') {
            return $this->setName($value);
        }
        if ($name === 'status') {
            return $this->setStatus($value);
        }

        throw new \InvalidArgumentException(sprintf('The property "%s" does not exists.', $name));
    }

    /**
     * Retrieve a property from the entity by name passed in as a string
     * 
     * @param string $name  The property name
     * 
     * @return mixed The value
     * 
     * @throws \InvalidArgumentException If the property does not exists
     */
    public function getByName($name)
    {
        if ($name === 'id') {
            return $this->getId();
        }
        if ($name === 'name') {
            return $this->getName();
        }
        if ($name === 'status') {
            return $this->getStatus();
        }

        throw new \InvalidArgumentException(sprintf('The property "%s" does not exists.', $name));
    }

    /**
     * Load the metadata for a Doctrine\ORM\Mapping\Driver\StaticPHPDriver
     *
     * @param ClassMetadata $metadata The metadata class
     */
    static public function loadMetadata(ClassMetadata $metadata)
    {
        $metadata->setIdGeneratorType(ClassMetadata::GENERATOR_TYPE_AUTO);
        $metadata->setChangeTrackingPolicy(ClassMetadata::CHANGETRACKING_DEFERRED_EXPLICIT);
        $metadata->setCustomRepositoryClass('Bookstore\BookRepository');
        $metadata->setPrimaryTable(array('name' => 'book'));

        $metadata->mapField(array(
            'fieldName'  => 'id',
            'type'       => 'integer',
            'id'         => true,
            'columnName' => 'id',
        ));
        $metadata->mapField(array(
            'fieldName'  => 'name',
            'type'       => 'string',
            'columnName' => 'name',
        ));
        $metadata->mapField(array(
            'fieldName'  => 'status',
            'type'       => 'string',
            'default'    => 'published',
            'columnName' => 'status',
        ));

        $metadata->mapOneToOne(array(
            'fieldName'         => 'author',
            'targetEntity'      => 'Doctrine\Tests\ORM\Tools\EntityGeneratorAuthor',
            'mappedBy'          => 'book',
            'cascade'           => array(),
            'fetch'             => ClassMetadata::FETCH_LAZY,
            'joinColumns'       => array(array(
                'name'                 => 'author_id',
                'referencedColumnName' => 'id',
                'unique'               => true,
            )),
        ));
        $metadata->mapManyToMany(array(
            'fieldName'         => 'comments',
            'targetEntity'      => 'Doctrine\Tests\ORM\Tools\EntityGeneratorComment',
            'cascade'           => array(),
            'fetch'             => ClassMetadata::FETCH_LAZY,
            'joinTable'         => array(
                'name'               => 'book_comment',
                'joinColumns'        => array(array(
                    'name'                 => 'book_id',
                    'referencedColumnName' => 'id',
                )),
                'inverseJoinColumns' => array(array(
                    'name'                 => 'comment_id',
                    'referencedColumnName' => 'id',
                )),
            ),
        ));

        $metadata->setLifecycleCallbacks(array(
            'postLoad'  => array('loading'),
            'preRemove' => array('willBeRemoved'),
        ));
    }

    /**
     * Populates the entity from an associative array
     * 
     * This is particularly useful when populating an object from one of the
     * request arrays (e.g. $_POST). This method goes through the column
     * names, checking to see whether a matching key exists in populated
     * array. If so the set[ColumnName]() method is called for that column.
     * 
     * @param array $array
     */
    public function fromArray($array)
    {
        if (isset($array['id']) || array_key_exists('id', $array)) {
            $this->setId($array['id']);
        }
        if (isset($array['name']) || array_key_exists('name', $array)) {
            $this->setName($array['name']);
        }
        if (isset($array['status']) || array_key_exists('status', $array)) {
            $this->setStatus($array['status']);
        }
    }

    /**
     * Exports the entity to an associative array
     * 
     * @return array
     */
    public function toArray()
    {
        return array(
            'id' => $this->getId(),
            'name' => $this->getName(),
            'status' => $this->getStatus(),
        );
    }

}