ClassInfo::table_for_object_field() - Code Metrics - Inspection of "Merge pull request #5646 from open-sausages/pulls/..." - silverstripe/silverstripe-framework - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 9e3f76...51d53f )

by Hamish

created 2016-06-14 03:06 UTC

ClassInfo::table_for_object_field() A

↳ Parent: ClassInfo

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	1
eloc	3
c	1
b	0
f	0
nc	1
nop	2
dl	0
loc	4
rs	10

<?php

/**
 * Provides introspection information about the class tree.
 *
 * It's a cached wrapper around the built-in class functions.  SilverStripe uses
 * class introspection heavily and without the caching it creates an unfortunate
 * performance hit.
 *
 * @package framework
 * @subpackage core
 */
class ClassInfo {

	/**
	 * Wrapper for classes getter.
	 *
	 * @return array
	 */
	public static function allClasses() {
		return SS_ClassLoader::instance()->getManifest()->getClasses();
	}

	/**
	 * Returns true if a class or interface name exists.
	 *
	 * @param  string $class
	 * @return bool
	 */
	public static function exists($class) {
		return class_exists($class, false) || interface_exists($class, false) || SS_ClassLoader::instance()->getItemPath($class);
	}

	/**
	 * Cache for {@link hasTable()}
	 */
	private static $_cache_all_tables = array();

	/**
	 * @var Array Cache for {@link ancestry()}.
	 */
	private static $_cache_ancestry = array();

	/**
	 * @todo Move this to SS_Database or DB
	 */
	public static function hasTable($class) {
		// Cache the list of all table names to reduce on DB traffic
		if(empty(self::$_cache_all_tables) && DB::is_active()) {
			self::$_cache_all_tables = DB::get_schema()->tableList();
		}
		return !empty(self::$_cache_all_tables[strtolower($class)]);
	}

	public static function reset_db_cache() {
		self::$_cache_all_tables = null;

		self::$_cache_ancestry = array();
	}

	/**
	 * Returns the manifest of all classes which are present in the database.
	 *
	 * @param string $class Class name to check enum values for ClassName field
	 * @param boolean $includeUnbacked Flag indicating whether or not to include
	 * types that don't exist as implemented classes. By default these are excluded.
	 * @return array List of subclasses
	 */
	public static function getValidSubClasses($class = 'SiteTree', $includeUnbacked = false) {
		if(is_string($class) && !class_exists($class)) return array();

		$class = self::class_name($class);
		$classes = DB::get_schema()->enumValuesForField($class, 'ClassName');
		if (!$includeUnbacked) $classes = array_filter($classes, array('ClassInfo', 'exists'));
		return $classes;
	}

	/**
	 * Returns an array of the current class and all its ancestors and children
	 * which require a DB table.
	 *
	 * @todo Move this into {@see DataObjectSchema}
	 *
	 * @param string|object $class
	 * @return array
	 */
	public static function dataClassesFor($class) {
		if(is_string($class) && !class_exists($class)) return array();

		$result = array();

		$class = self::class_name($class);

		$classes = array_merge(
			self::ancestry($class),
			self::subclassesFor($class)
		);

		foreach ($classes as $class) {
			if (DataObject::has_own_table($class)) {
				$result[$class] = $class;
			}
		}

		return $result;
	}

	/**
	 * @deprecated 4.0..5.0
	 */
	public static function baseDataClass($class) {
		Deprecation::notice('5.0', 'Use DataObject::getSchema()->baseDataClass()');
		return DataObject::getSchema()->baseDataClass($class);
	}

	/**
	 * Returns a list of classes that inherit from the given class.
	 * The resulting array includes the base class passed
	 * through the $class parameter as the first array value.
	 *
	 * Example usage:
	 * <code>
	 * ClassInfo::subclassesFor('BaseClass');
	 * 	array(
	 * 	'BaseClass' => 'BaseClass',
	 * 	'ChildClass' => 'ChildClass',
	 * 	'GrandChildClass' => 'GrandChildClass'
	 * )
	 * </code>
	 *
	 * @param mixed $class string of the classname or instance of the class
	 * @return array Names of all subclasses as an associative array.
	 */
	public static function subclassesFor($class) {
		if(is_string($class) && !class_exists($class)) {
			return [];
		}

		//normalise class case
		$className = self::class_name($class);
		$descendants = SS_ClassLoader::instance()->getManifest()->getDescendantsOf($class);
		$result      = array($className => $className);

		if ($descendants) {

			return $result + ArrayLib::valuekey($descendants);
		} else {
			return $result;
		}
	}

	/**
	 * Convert a class name in any case and return it as it was defined in PHP
	 *
	 * eg: self::class_name('dataobJEct'); //returns 'DataObject'
	 *
	 * @param string|object $nameOrObject The classname or object you want to normalise
	 * @return string The normalised class name
	 */
	public static function class_name($nameOrObject) {
		if (is_object($nameOrObject)) {
			return get_class($nameOrObject);
		}
		$reflection = new ReflectionClass($nameOrObject);
		return $reflection->getName();
	}

	/**
	 * Returns the passed class name along with all its parent class names in an
	 * array, sorted with the root class first.
	 *
	 * @param  string $class
	 * @param  bool $tablesOnly Only return classes that have a table in the db.
	 * @return array
	 */
	public static function ancestry($class, $tablesOnly = false) {
		if(is_string($class) && !class_exists($class)) return array();

		$class = self::class_name($class);

		$lClass = strtolower($class);

		$cacheKey = $lClass . '_' . (string)$tablesOnly;
		$parent = $class;
		if(!isset(self::$_cache_ancestry[$cacheKey])) {
			$ancestry = array();
			do {
				if (!$tablesOnly || DataObject::has_own_table($parent)) {
					$ancestry[$parent] = $parent;
				}
			} while ($parent = get_parent_class($parent));
			self::$_cache_ancestry[$cacheKey] = array_reverse($ancestry);
		}

		return self::$_cache_ancestry[$cacheKey];
	}

	/**
	 * @return array A self-keyed array of class names. Note that this is only available with Silverstripe
	 * classes and not built-in PHP classes.
	 */
	public static function implementorsOf($interfaceName) {
		return SS_ClassLoader::instance()->getManifest()->getImplementorsOf($interfaceName);
	}

	/**
	 * Returns true if the given class implements the given interface
	 */
	public static function classImplements($className, $interfaceName) {
		return in_array($className, self::implementorsOf($interfaceName));
	}

	/**
	 * Get all classes contained in a file.
	 * @uses ManifestBuilder
	 *
	 * @todo Doesn't return additional classes that only begin
	 *  with the filename, and have additional naming separated through underscores.
	 *
	 * @param string $filePath Path to a PHP file (absolute or relative to webroot)
	 * @return array
	 */
	public static function classes_for_file($filePath) {
		$absFilePath    = Director::getAbsFile($filePath);
		$matchedClasses = array();
		$manifest       = SS_ClassLoader::instance()->getManifest()->getClasses();

		foreach($manifest as $class => $compareFilePath) {
			if($absFilePath == $compareFilePath) $matchedClasses[] = $class;
		}

		return $matchedClasses;
	}

	/**
	 * Returns all classes contained in a certain folder.
	 *
	 * @todo Doesn't return additional classes that only begin
	 *  with the filename, and have additional naming separated through underscores.
	 *
	 * @param string $folderPath Relative or absolute folder path
	 * @return array Array of class names
	 */
	public static function classes_for_folder($folderPath) {
		$absFolderPath  = Director::getAbsFile($folderPath);
		$matchedClasses = array();
		$manifest       = SS_ClassLoader::instance()->getManifest()->getClasses();

		foreach($manifest as $class => $compareFilePath) {
			if(stripos($compareFilePath, $absFolderPath) === 0) $matchedClasses[] = $class;
		}

		return $matchedClasses;
	}

	private static $method_from_cache = array();

	public static function has_method_from($class, $method, $compclass) {
		$lClass = strtolower($class);
		$lMethod = strtolower($method);
		$lCompclass = strtolower($compclass);
		if (!isset(self::$method_from_cache[$lClass])) self::$method_from_cache[$lClass] = array();

		if (!array_key_exists($lMethod, self::$method_from_cache[$lClass])) {
			self::$method_from_cache[$lClass][$lMethod] = false;

			$classRef = new ReflectionClass($class);

			if ($classRef->hasMethod($method)) {
				$methodRef = $classRef->getMethod($method);
				self::$method_from_cache[$lClass][$lMethod] = $methodRef->getDeclaringClass()->getName();
			}
		}

		return strtolower(self::$method_from_cache[$lClass][$lMethod]) == $lCompclass;
	}

	/**
	 * @deprecated 4.0..5.0
	 */
	public static function table_for_object_field($candidateClass, $fieldName) {
		Deprecation::notice('5.0', 'Use DataObject::getSchema()->tableForField()');
		return DataObject::getSchema()->tableForField($candidateClass, $fieldName);
	}
}



1			<?php
2
3			/**
4			* Provides introspection information about the class tree.
5			*
6			* It's a cached wrapper around the built-in class functions. SilverStripe uses
7			* class introspection heavily and without the caching it creates an unfortunate
8			* performance hit.
9			*
10			* @package framework
11			* @subpackage core
12			*/
13			class ClassInfo {
14
15			/**
16			* Wrapper for classes getter.
17			*
18			* @return array
19			*/
20			public static function allClasses() {
21			return SS_ClassLoader::instance()->getManifest()->getClasses();
22			}
23
24			/**
25			* Returns true if a class or interface name exists.
26			*
27			* @param string $class
28			* @return bool
29			*/
30			public static function exists($class) {
31			return class_exists($class, false) \|\| interface_exists($class, false) \|\| SS_ClassLoader::instance()->getItemPath($class);
32			}
33
34			/**
35			* Cache for {@link hasTable()}
36			*/
37			private static $_cache_all_tables = array();
38
39			/**
40			* @var Array Cache for {@link ancestry()}.
41			*/
42			private static $_cache_ancestry = array();
43
44			/**
45			* @todo Move this to SS_Database or DB
46			*/
47			public static function hasTable($class) {
48			// Cache the list of all table names to reduce on DB traffic
49			if(empty(self::$_cache_all_tables) && DB::is_active()) {
50			self::$_cache_all_tables = DB::get_schema()->tableList();
51			}
52			return !empty(self::$_cache_all_tables[strtolower($class)]);
53			}
54
55			public static function reset_db_cache() {
56			self::$_cache_all_tables = null;
			0 ignored issues – show Documentation Bug introduced 2015-11-25 21:50 UTC by Report Bug Copy Issue Report It seems like `null` of type `null` is incompatible with the declared type `array` of property `$_cache_all_tables`. Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property. Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property.. Loading history...
57			self::$_cache_ancestry = array();
58			}
59
60			/**
61			* Returns the manifest of all classes which are present in the database.
62			*
63			* @param string $class Class name to check enum values for ClassName field
64			* @param boolean $includeUnbacked Flag indicating whether or not to include
65			* types that don't exist as implemented classes. By default these are excluded.
66			* @return array List of subclasses
67			*/
68			public static function getValidSubClasses($class = 'SiteTree', $includeUnbacked = false) {
69			if(is_string($class) && !class_exists($class)) return array();
70
71			$class = self::class_name($class);
72			$classes = DB::get_schema()->enumValuesForField($class, 'ClassName');
73			if (!$includeUnbacked) $classes = array_filter($classes, array('ClassInfo', 'exists'));
74			return $classes;
75			}
76
77			/**
78			* Returns an array of the current class and all its ancestors and children
79			* which require a DB table.
80			*
81			* @todo Move this into {@see DataObjectSchema}
82			*
83			* @param string\|object $class
84			* @return array
85			*/
86			public static function dataClassesFor($class) {
87			if(is_string($class) && !class_exists($class)) return array();
88
89			$result = array();
90
91			$class = self::class_name($class);
92
93			$classes = array_merge(
94			self::ancestry($class),
95			self::subclassesFor($class)
96			);
97
98			foreach ($classes as $class) {
99			if (DataObject::has_own_table($class)) {
100			$result[$class] = $class;
101			}
102			}
103
104			return $result;
105			}
106
107			/**
108			* @deprecated 4.0..5.0
109			*/
110			public static function baseDataClass($class) {
111			Deprecation::notice('5.0', 'Use DataObject::getSchema()->baseDataClass()');
112			return DataObject::getSchema()->baseDataClass($class);
113			}
114
115			/**
116			* Returns a list of classes that inherit from the given class.
117			* The resulting array includes the base class passed
118			* through the $class parameter as the first array value.
119			*
120			* Example usage:
121			* <code>
122			* ClassInfo::subclassesFor('BaseClass');
123			* array(
124			* 'BaseClass' => 'BaseClass',
125			* 'ChildClass' => 'ChildClass',
126			* 'GrandChildClass' => 'GrandChildClass'
127			* )
128			* </code>
129			*
130			* @param mixed $class string of the classname or instance of the class
131			* @return array Names of all subclasses as an associative array.
132			*/
133			public static function subclassesFor($class) {
134			if(is_string($class) && !class_exists($class)) {
135			return [];
136			}
137
138			//normalise class case
139			$className = self::class_name($class);
140			$descendants = SS_ClassLoader::instance()->getManifest()->getDescendantsOf($class);
141			$result = array($className => $className);
142
143			if ($descendants) {
			0 ignored issues – show Bug Best Practice introduced 2015-11-25 21:50 UTC by Report Bug Copy Issue Report The expression `$descendants` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `! empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
144			return $result + ArrayLib::valuekey($descendants);
145			} else {
146			return $result;
147			}
148			}
149
150			/**
151			* Convert a class name in any case and return it as it was defined in PHP
152			*
153			* eg: self::class_name('dataobJEct'); //returns 'DataObject'
154			*
155			* @param string\|object $nameOrObject The classname or object you want to normalise
156			* @return string The normalised class name
157			*/
158			public static function class_name($nameOrObject) {
159			if (is_object($nameOrObject)) {
160			return get_class($nameOrObject);
161			}
162			$reflection = new ReflectionClass($nameOrObject);
163			return $reflection->getName();
164			}
165
166			/**
167			* Returns the passed class name along with all its parent class names in an
168			* array, sorted with the root class first.
169			*
170			* @param string $class
171			* @param bool $tablesOnly Only return classes that have a table in the db.
172			* @return array
173			*/
174			public static function ancestry($class, $tablesOnly = false) {
175			if(is_string($class) && !class_exists($class)) return array();
176
177			$class = self::class_name($class);
178
179			$lClass = strtolower($class);
180
181			$cacheKey = $lClass . '_' . (string)$tablesOnly;
182			$parent = $class;
183			if(!isset(self::$_cache_ancestry[$cacheKey])) {
184			$ancestry = array();
185			do {
186			if (!$tablesOnly \|\| DataObject::has_own_table($parent)) {
187			$ancestry[$parent] = $parent;
188			}
189			} while ($parent = get_parent_class($parent));
190			self::$_cache_ancestry[$cacheKey] = array_reverse($ancestry);
191			}
192
193			return self::$_cache_ancestry[$cacheKey];
194			}
195
196			/**
197			* @return array A self-keyed array of class names. Note that this is only available with Silverstripe
198			* classes and not built-in PHP classes.
199			*/
200			public static function implementorsOf($interfaceName) {
201			return SS_ClassLoader::instance()->getManifest()->getImplementorsOf($interfaceName);
202			}
203
204			/**
205			* Returns true if the given class implements the given interface
206			*/
207			public static function classImplements($className, $interfaceName) {
208			return in_array($className, self::implementorsOf($interfaceName));
209			}
210
211			/**
212			* Get all classes contained in a file.
213			* @uses ManifestBuilder
214			*
215			* @todo Doesn't return additional classes that only begin
216			* with the filename, and have additional naming separated through underscores.
217			*
218			* @param string $filePath Path to a PHP file (absolute or relative to webroot)
219			* @return array
220			*/
221			public static function classes_for_file($filePath) {
222			$absFilePath = Director::getAbsFile($filePath);
223			$matchedClasses = array();
224			$manifest = SS_ClassLoader::instance()->getManifest()->getClasses();
225
226			foreach($manifest as $class => $compareFilePath) {
227			if($absFilePath == $compareFilePath) $matchedClasses[] = $class;
228			}
229
230			return $matchedClasses;
231			}
232
233			/**
234			* Returns all classes contained in a certain folder.
235			*
236			* @todo Doesn't return additional classes that only begin
237			* with the filename, and have additional naming separated through underscores.
238			*
239			* @param string $folderPath Relative or absolute folder path
240			* @return array Array of class names
241			*/
242			public static function classes_for_folder($folderPath) {
243			$absFolderPath = Director::getAbsFile($folderPath);
244			$matchedClasses = array();
245			$manifest = SS_ClassLoader::instance()->getManifest()->getClasses();
246
247			foreach($manifest as $class => $compareFilePath) {
248			if(stripos($compareFilePath, $absFolderPath) === 0) $matchedClasses[] = $class;
249			}
250
251			return $matchedClasses;
252			}
253
254			private static $method_from_cache = array();
255
256			public static function has_method_from($class, $method, $compclass) {
257			$lClass = strtolower($class);
258			$lMethod = strtolower($method);
259			$lCompclass = strtolower($compclass);
260			if (!isset(self::$method_from_cache[$lClass])) self::$method_from_cache[$lClass] = array();
261
262			if (!array_key_exists($lMethod, self::$method_from_cache[$lClass])) {
263			self::$method_from_cache[$lClass][$lMethod] = false;
264
265			$classRef = new ReflectionClass($class);
266
267			if ($classRef->hasMethod($method)) {
268			$methodRef = $classRef->getMethod($method);
269			self::$method_from_cache[$lClass][$lMethod] = $methodRef->getDeclaringClass()->getName();
270			}
271			}
272
273			return strtolower(self::$method_from_cache[$lClass][$lMethod]) == $lCompclass;
274			}
275
276			/**
277			* @deprecated 4.0..5.0
278			*/
279			public static function table_for_object_field($candidateClass, $fieldName) {
280			Deprecation::notice('5.0', 'Use DataObject::getSchema()->tableForField()');
281			return DataObject::getSchema()->tableForField($candidateClass, $fieldName);
282			}
283			}
284
285

silverstripe / silverstripe-framework

Push — master ( 9e3f76...51d53f )

ClassInfo::table_for_object_field() A

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