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<?php
namespace LeanMapper\Reflection;
use LeanMapper\Exception\InvalidAnnotationException;
use LeanMapper\Exception\UtilityClassException;
use LeanMapper\IMapper;
use LeanMapper\Relationship;
use LeanMapper\Result;
class PropertyFactory
{
public function __construct()
{
throw new UtilityClassException('Cannot instantiate utility class ' . get_called_class() . '.');
}
public static function createFromAnnotation($annotationType, $annotation, EntityReflection $entityReflection, IMapper $mapper = null)
{
$aliases = $entityReflection->getAliases();
$matches = array();
$matched = preg_match('~
^(null\|)?
((?:\\\\?[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)+)
(\[\])?
(\|null)?\s+
(\$[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)
(?:\s+=\s*(?:
"((?:\\\\"|[^"])+)" | # double quoted string
\'((?:\\\\\'|[^\'])+)\' | # single quoted string
([^ ]*)) # unquoted value
)?
(?:\s+\(([^)]+)\))?
(?:\s+(.*)\s*)?
~xi', $annotation, $matches);
if (!$matched) {
throw new InvalidAnnotationException("Invalid property definition given: @$annotationType $annotation in entity {$entityReflection->getName()}.");
}
$propertyType = new PropertyType($matches[2], $aliases);
$isWritable = $annotationType === 'property';
$containsCollection = $matches[3] !== '';
if ($propertyType->isBasicType() and $containsCollection) {
throw new InvalidAnnotationException("Invalid property type definition given: @$annotationType $annotation in entity {$entityReflection->getName()}. Lean Mapper doesn't support <type>[] notation for basic types.");
}
$isNullable = ($matches[1] !== '' or $matches[4] !== '');
$name = substr($matches[5], 1);
$hasDefaultValue = false;
$defaultValue = null;
if (isset($matches[6]) and $matches[6] !== '') {
$defaultValue = str_replace('\"', '"', $matches[6]);
} elseif (isset($matches[7]) and $matches[7] !== '') {
$defaultValue = str_replace("\\'", "'", $matches[7]);
} elseif (isset($matches[8]) and $matches[8] !== '') {
$defaultValue = $matches[8];
}
if ($defaultValue !== null) {
$hasDefaultValue = true;
try {
$defaultValue = self::fixDefaultValue($defaultValue, $propertyType, $isNullable);
} catch (InvalidAnnotationException $e) {
throw new InvalidAnnotationException("Invalid property definition given: @$annotationType $annotation in entity {$entityReflection->getName()}, " . lcfirst($e->getMessage()));
}
}
$column = $mapper !== null ? $mapper->getColumn($entityReflection->getName(), $name) : $name;
if (isset($matches[9]) and $matches[9] !== '') {
$column = $matches[9];
}
$relationship = null;
$propertyMethods = null;
$propertyFilters = null;
$propertyPasses = null;
$propertyValuesEnum = null;
$customFlags = array();
if (isset($matches[10])) {
$flagMatches = array();
preg_match_all('~m:([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)\s*(?:\(([^)]*)\))?~', $matches[10], $flagMatches, PREG_SET_ORDER);
foreach ($flagMatches as $match) {
$flag = $match[1];
$flagArgument = (isset($match[2]) and $match[2] !== '') ? $match[2] : null;
switch ($flag) {
case 'hasOne':
case 'hasMany':
case 'belongsToOne':
case 'belongsToMany':
if ($relationship !== null) {
throw new InvalidAnnotationException("It doesn't make sense to have multiple relationship definitions in property definition: @$annotationType $annotation in entity {$entityReflection->getName()}.");
}
$relationship = self::createRelationship(
$entityReflection->getName(),
$propertyType,
$flag,
$flagArgument,
$mapper
);
break;
case 'useMethods':
if ($propertyMethods !== null) {
throw new InvalidAnnotationException("Multiple m:useMethods flags found in property definition: @$annotationType $annotation in entity {$entityReflection->getName()}.");
}
$propertyMethods = new PropertyMethods($name, $isWritable, $flagArgument);
break;
case 'filter':
if ($propertyFilters !== null) {
throw new InvalidAnnotationException("Multiple m:filter flags found in property definition: @$annotationType $annotation in entity {$entityReflection->getName()}.");
}
$propertyFilters = new PropertyFilters($flagArgument);
break;
case 'passThru':
if ($propertyPasses !== null) {
throw new InvalidAnnotationException("Multiple m:passThru flags found in property definition: @$annotationType $annotation in entity {$entityReflection->getName()}.");
}
$propertyPasses = new PropertyPasses($flagArgument);
break;
case 'enum':
if ($propertyValuesEnum !== null) {
throw new InvalidAnnotationException("Multiple values enumerations found in property definition: @$annotationType $annotation in entity {$entityReflection->getName()}.");
}
if ($flagArgument === null) {
throw new InvalidAnnotationException("Parameter of m:enum flag was not found in property definition: @$annotationType $annotation in entity {$entityReflection->getName()}.");
}
$propertyValuesEnum = new PropertyValuesEnum($flagArgument, $entityReflection);
break;
default:
if (array_key_exists($flag, $customFlags)) {
throw new InvalidAnnotationException("Multiple m:$flag flags found in property definition: @$annotationType $annotation in entity {$entityReflection->getName()}.");
}
$customFlags[$flag] = $flagArgument;
}
}
}
if ($relationship !== null) {
$column = null;
if ($relationship instanceof Relationship\HasOne) {
$column = $relationship->getColumnReferencingTargetTable();
}
}
return new Property(
$name,
$entityReflection,
$column,
$propertyType,
$isWritable,
$isNullable,
$containsCollection,
$hasDefaultValue,
$defaultValue,
$relationship,
$propertyMethods,
$propertyFilters,
$propertyPasses,
$propertyValuesEnum,
$customFlags
);
}
private static function createRelationship($sourceClass, PropertyType $propertyType, $relationshipType, $definition = null, IMapper $mapper = null)
{
if ($relationshipType !== 'hasOne') {
$strategy = Result::STRATEGY_IN;
if ($definition !== null and substr($definition, -6) === '#union') {
$strategy = Result::STRATEGY_UNION;
$definition = substr($definition, 0, -6);
}
}
$pieces = array_replace(array_fill(0, 6, ''), $definition !== null ? explode(':', $definition) : array());
$sourceTable = ($mapper !== null ? $mapper->getTable($sourceClass) : null);
$targetTable = ($mapper !== null ? $mapper->getTable($propertyType->getType()) : null);
switch ($relationshipType) {
case 'hasOne':
$relationshipColumn = ($mapper !== null ? $mapper->getRelationshipColumn($sourceTable, $targetTable) : self::getSurrogateRelationshipColumn($propertyType));
return new Relationship\HasOne($pieces[0] ?: $relationshipColumn, $pieces[1] ?: $targetTable);
case 'hasMany':
return new Relationship\HasMany(
$pieces[0] ?: ($mapper !== null ? $mapper->getRelationshipColumn($mapper->getRelationshipTable($sourceTable, $targetTable), $sourceTable) : null),
$pieces[1] ?: ($mapper !== null ? $mapper->getRelationshipTable($sourceTable, $targetTable) : null),
$pieces[2] ?: ($mapper !== null ? $mapper->getRelationshipColumn($mapper->getRelationshipTable($sourceTable, $targetTable), $targetTable) : null),
$pieces[3] ?: $targetTable,
$strategy
);
case 'belongsToOne':
$relationshipColumn = ($mapper !== null ? $mapper->getRelationshipColumn($targetTable, $sourceTable) : $sourceTable);
return new Relationship\BelongsToOne($pieces[0] ?: $relationshipColumn, $pieces[1] ?: $targetTable, $strategy);
case 'belongsToMany':
$relationshipColumn = ($mapper !== null ? $mapper->getRelationshipColumn($targetTable, $sourceTable) : $sourceTable);
return new Relationship\BelongsToMany($pieces[0] ?: $relationshipColumn, $pieces[1] ?: $targetTable, $strategy);
}
return null;
}
private static function getSurrogateRelationshipColumn(PropertyType $propertyType)
{
return strtolower(self::trimNamespace($propertyType->getType())) . '{hasOne:' . self::generateRandomString(10) . '}';
}
private static function trimNamespace($class)
{
$class = explode('\\', $class);
return end($class);
}
private static function generateRandomString($length)
{
return substr(str_shuffle("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"), 0, $length);
}
private static function fixDefaultValue($value, PropertyType $propertyType, $isNullable)
{
if ($isNullable and strtolower($value) === 'null') {
return null;
} elseif (!$propertyType->isBasicType()) {
throw new InvalidAnnotationException('Only properties of basic types may have default values specified.');
}
switch ($propertyType->getType()) {
case 'boolean':
$lower = strtolower($value);
if ($lower !== 'true' and $lower !== 'false') {
throw new InvalidAnnotationException("Property of type boolean cannot have default value '$value'.");
}
return $lower === 'true';
case 'integer':
if (!is_numeric($value)) {
throw new InvalidAnnotationException("Property of type integer cannot have default value '$value'.");
}
return intval($value, 0);
case 'float':
if (!is_numeric($value)) {
throw new InvalidAnnotationException("Property of type float cannot have default value '$value'.");
}
return floatval($value);
case 'array':
if (strtolower($value) !== 'array()' and $value !== '[]') {
throw new InvalidAnnotationException("Property of type array cannot have default value '$value'.");
}
return array();
case 'string':
if ($value === '\'\'' or $value === '""') {
return '';
}
return $value;
default:
return $value;
}
}
}