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<?php
namespace LeanMapper;
use Closure;
use DibiConnection;
use DibiFluent;
use LeanMapper\Exception\InvalidMethodCallException;
use LeanMapper\Exception\InvalidValueException;
use LeanMapper\Exception\MemberAccessException;
use LeanMapper\Exception\RuntimeException;
use LeanMapper\Reflection\EntityReflection;
use LeanMapper\Reflection\Property;
use LeanMapper\Relationship;
use LeanMapper\Row;
abstract class Entity
{
protected $row;
protected static $reflections = array();
public function __construct(Row $row = null)
{
$this->row = $row !== null ? $row : Result::getDetachedInstance()->getRow();
}
public function __get($name)
{
$property = $this->getReflection()->getEntityProperty($name);
if ($property === null) {
$method = 'get' . ucfirst($name);
if (method_exists($this, $method)) {
return call_user_func(array($this, $method));
}
throw new MemberAccessException("Undefined property: $name");
}
$column = $property->getColumn();
if ($property->isBasicType()) {
$value = $this->row->$column;
if ($value === null) {
if (!$property->isNullable()) {
throw new InvalidValueException("Property '$name' cannot be null.");
}
return null;
}
if (!settype($value, $property->getType())) {
throw new InvalidValueException("Cannot convert value '$value' to " . $property->getType() . '.');
}
} else {
if ($property->hasRelationship()) {
$filter = null;
$callbacks = $property->getFilters();
if (!empty($callbacks)) {
$args = func_get_args();
$filterArgs = isset($args[1]) ? $args[1] : array();
$filter = function (DibiFluent $statement) use ($callbacks, $filterArgs) {
foreach ($callbacks as $callback) {
call_user_func_array($callback, array_merge(array($statement), $filterArgs));
}
};
}
$relationship = $property->getRelationship();
$method = explode('\\', get_class($relationship));
$method = 'get' . array_pop($method) . 'Value';
$value = $this->$method($property, $filter);
} else {
$value = $this->row->$column;
$actualClass = get_class($value);
if ($value === null) {
if (!$property->isNullable()) {
throw new InvalidValueException("Property '$name' cannot be null.");
}
return null;
}
if (!$property->containsCollection()) {
if ($actualClass !== $property->getType()) {
throw new InvalidValueException("Property '$name' is expected to contain an instance of '{$property->getType()}', instance of '$actualClass' given.");
}
} else {
if (!is_array($value)) {
throw new InvalidValueException("Property '$name' is expected to contain an array of '{$property->getType()}' instances.");
}
}
}
}
return $value;
}
function __set($name, $value)
{
$property = $this->getReflection()->getEntityProperty($name);
if ($property === null) {
$method = 'set' . ucfirst($name);
if (method_exists($this, $method)) {
call_user_func(array($this, $method), $value);
} else {
throw new MemberAccessException("Undefined property: $name");
}
} else {
if (!$property->isWritable()) {
throw new MemberAccessException("Cannot write to read only property '$name'.");
}
$column = $property->getColumn();
if ($value === null) {
if (!$property->isNullable()) {
throw new InvalidValueException("Property '$name' cannot be null.");
}
$this->row->$column = null;
} else {
if ($property->isBasicType()) {
if (!settype($value, $property->getType())) {
throw new InvalidValueException("Cannot convert value '$value' to " . $property->getType() . '.');
}
$this->row->$column = $value;
} else {
if ($property->hasRelationship()) {
if (!($value instanceof Entity)) {
throw new InvalidValueException("Only entites can be set via magic __set on field with relationships.");
}
$relationship = $property->getRelationship();
if (!($relationship instanceof Relationship\HasOne)) {
throw new InvalidMethodCallException('Only fields with m:hasOne relationship can be set via magic __set.');
}
$column = $relationship->getColumnReferencingTargetTable();
$table = $relationship->getTargetTable();
if ($value->isDetached()) {
throw new InvalidValueException('Detached entity must be stored in database before use in relationships.');
}
$this->row->$column = $value->id;
$this->row->cleanReferencedRowsCache($table, $column);
} else {
if (!is_object($value)) {
throw new InvalidValueException("Unexpected value type: " . $property->getType() . " expected, " . gettype($value) . " given.");
}
if (get_class($value) !== $property->getType()) {
throw new InvalidValueException("Unexpected value type: " . $property->getType() . " expected, " . get_class($value) . " given.");
}
$this->row->$column = $value;
}
}
}
}
}
public function __call($name, array $arguments)
{
$e = new InvalidMethodCallException("Method '$name' is not callable.");
if (strlen($name) < 4) {
throw $e;
}
$prefix = substr($name, 0, 3);
if ($prefix === 'get') {
return $this->__get(lcfirst(substr($name, 3)), $arguments);
} elseif ($prefix === 'set') {
$this->__set(lcfirst(substr($name, 3)), $arguments);
} else {
throw $e;
}
}
public function assign(array $values, array $whitelist = null)
{
if ($whitelist !== null) {
$whitelist = array_flip($whitelist);
}
foreach ($values as $field => $value) {
if ($whitelist === null or isset($whitelist[$field])) {
$this->__set($field, $value);
}
}
}
public function isModified()
{
return $this->row->isModified();
}
public function isDetached()
{
return $this->row->isDetached();
}
public function detach()
{
$this->row->detach();
}
public function getModifiedData()
{
return $this->row->getModifiedData();
}
public function markAsUpdated()
{
$this->row->markAsUpdated();
}
public function markAsCreated($id, $table, DibiConnection $connection)
{
$this->row->markAsCreated($id, $table, $connection);
}
private static function getReflection()
{
$class = get_called_class();
if (!isset(static::$reflections[$class])) {
static::$reflections[$class] = new EntityReflection($class);
}
return static::$reflections[$class];
}
private function getHasOneValue(Property $property, Closure $filter = null)
{
$relationship = $property->getRelationship();
$row = $this->row->referenced($relationship->getTargetTable(), $filter, $relationship->getColumnReferencingTargetTable());
if ($row === null) {
if (!$property->isNullable()) {
$name = $property->getName();
throw new InvalidValueException("Property '$name' cannot be null.");
}
return null;
} else {
$class = $property->getType();
return new $class($row);
}
}
private function getHasManyValue(Property $property, Closure $filter = null)
{
$relationship = $property->getRelationship();
$rows = $this->row->referencing($relationship->getRelationshipTable(), null, $relationship->getColumnReferencingSourceTable());
$class = $property->getType();
$value = array();
foreach ($rows as $row) {
$valueRow = $row->referenced($relationship->getTargetTable(), $filter, $relationship->getColumnReferencingTargetTable());
if ($valueRow !== null) {
$value[] = new $class($valueRow);
}
}
return $value;
}
private function getBelongsToOneValue(Property $property, Closure $filter = null)
{
$relationship = $property->getRelationship();
$rows = $this->row->referencing($relationship->getTargetTable(), $filter, $relationship->getColumnReferencingSourceTable());
$count = count($rows);
if ($count > 1) {
throw new InvalidValueException('There cannot be more than one entity referencing to entity with m:belongToOne relationship.');
} elseif ($count === 0) {
if (!$property->isNullable()) {
$name = $property->getName();
throw new InvalidValueException("Property '$name' cannot be null.");
}
return null;
} else {
$row = reset($rows);
$class = $property->getType();
return new $class($row);
}
}
private function getBelongsToManyValue(Property $property, Closure $filter = null)
{
$relationship = $property->getRelationship();
$rows = $this->row->referencing($relationship->getTargetTable(), $filter, $relationship->getColumnReferencingSourceTable());
$class = $property->getType();
$value = array();
foreach ($rows as $row) {
$value[] = new $class($row);
}
return $value;
}
}