<?php
/**
 * @Entity
 * @Table(name="model1")
 */
class Model1 extends BaseModel
{
    /**
     * @Column(name="id", type="integer")
     * @Id
     * @GeneratedValue(strategy="AUTO")
     */
    protected $id;
 
    /**
     * @Column(name="name", type="string", length=255)
     */
    protected $name;
 
    /**
     * @OneToOne(targetEntity="Model2")
     * @JoinColumns({
     *   @JoinColumn(name="model2_id", referencedColumnName="id", nullable=false)
     * })
     */
    protected $model2;
 
    protected $relationClasses = array(
        'model2' => 'Model2'
    );
}

<?php
 
/** @MappedSuperclass */
class BaseModel {
 
    /**
     * just in case...
     * @return string
     */
    public function __toString() {
        return 'this is not a string!!!';
    }
 
    /**
     * magic method which processes getFieldName() and setFieldName($value)
     * setFieldName() returns the object
     *
     * @param string $method
     * @param array $args
     * @return mixed
     */
    public function __call($method, $args) {
        if(substr($method,0,3)=='get') {
            if(isset($this->{$this->_getFieldName($method)}))
                return $this->{$this->_getFieldName($method)};
        }
 
        if(substr($method,0,3)=='set') {
            if(property_exists(get_class($this), $this->_getFieldName($method))) {
                $this->{$this->_getFieldName($method)} = $args[0];
                return $this;
            }
        }
    }
 
    /**
     * transforms getCamelCaseFieldName to camelCaseFieldName
     *
     * @param string $methodname
     * @return string
     */
    private function _getFieldName($methodname) {
        return lcfirst(substr($methodname, 3));
    }
 
    /**
     * fetches all rows of the database table
     * @return collection
     */
    public static function getAll() {
        $registry = Zend_Registry::getInstance();
        $em = $registry->entitymanager;
        return $em->getRepository(get_called_class())->findAll();
    }
 
    /**
     * finds the row with id $id. If it doesn't exist and $create is true,
     * it creates the object and returns it
     *
     * @param int $id
     * @param boolean $create
     * @return entityname
     */
    public static function find($id, $create = false) {
        $entityname = get_called_class();
        $registry = Zend_Registry::getInstance();
        $em = $registry->entitymanager;
        $match = $em->getRepository($entityname)->find($id);
        if(!is_null($match))
            return $match;
 
        if($create)
            return new $entityname;
 
        return null;
    }
 
    /**
     * populates the object with values from $array, if it's keys are
     * valid table fields.
     *
     * @param array $array
     * @return $this
     */
    public function from($array) {
        foreach($array as $field=>$value) {
 
            if(empty($value) || $value ==  'NULL' || is_null($value)) {
                continue;
            }
            $setter = 'set' . ucfirst($field);
            if(isset($this->relationClasses[$field])) {
                $obj = call_user_func($this->relationClasses[$field] . '::find',$value);
                $this->$setter($obj);
            } else
                $this->$setter($value);
        }
        return $this;
    }
}

<?php
 
/** @MappedSuperclass */
class Model_Base {
    /**
     * @Column(type="datetime")
     */
    private $created;
 
    /**
     * @Column(type="datetime")
     */
    private $updated;
 
    /**
     * set the updated and created fields to "now"
     */
    public function __construct() {
        $this->created = $this->updated = new DateTime("now");
    }
 
    /**
     * @PreUpdate
     */
    public function updated() {
        $this->updated = new DateTime("now");
    }
 
    /**
     * just in case...
     * @return string
     */
    public function __toString() {
        return 'this is not a string!!!';
    }
 
    /**
     * magic method which processes getFieldName() and setFieldName($value)
     * setFieldName() returns the object
     *
     * @param string $method
     * @param array $args
     * @return mixed
     */
    public function __call($method, $args) {
        if(substr($method,0,3)=='get') {
            if(isset($this->{$this->_getFieldName($method)}))
                return $this->{$this->_getFieldName($method)};
        }
 
        if(substr($method,0,3)=='set') {
            if(property_exists(get_class($this), $this->_getFieldName($method))) {
                $this->{$this->_getFieldName($method)} = $args[0];
                return $this;
            }
        }
    }
 
    /**
     * transforms getCamelCaseFieldName to camel_case_field_name
     *
     * @param string $methodname
     * @return string
     */
    private function _getFieldName($methodname) {
        $return = preg_replace('/([A-Z])/','_$1',$methodname);
        return strtolower(substr($return, 4));
    }
 
    /**
     * fetches all rows of the database table
     * @return collection
     */
    public static function getAll() {
        $registry = Zend_Registry::getInstance();
        $em = $registry->entitymanager;
        return $em->getRepository(get_called_class())->findAll();
    }
 
    /**
     * finds the row with id $id. If it doesn't exist and $create is true,
     * it creates the object and returns it
     *
     * @param int $id
     * @param boolean $create
     * @return entityname
     */
    public static function find($id, $create = false) {
        $entityname = get_called_class();
        $registry = Zend_Registry::getInstance();
        $em = $registry->entitymanager;
        $match = $em->getRepository($entityname)->find($id);
        if(!is_null($match))
            return $match;
 
        if($create)
            return new $entityname;
 
        return null;
    }
 
    /**
     * populates the object with values from $array, if it's keys are
     * valid table fields.
     *
     * @param array $array
     * @return $this
     */
    public function from($array) {
        foreach($array as $field=>$value)
            if(property_exists(get_class($this), $field))
                $this->{$field} = $value;
        return $this;
    }
}