Complex classes like store often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use store, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 38 | abstract class store { |
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| 39 | |||
| 40 | public $error; |
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| 41 | public $root; |
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| 42 | public $rootoptions; |
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| 43 | public $mod_lock; |
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| 44 | public $total; |
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| 45 | protected $code; |
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| 46 | protected $files; |
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| 47 | protected $_filestores; |
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| 48 | protected $config; |
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| 49 | |||
| 50 | |||
| 51 | |||
| 52 | public function __construct($path, $config) { |
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| 53 | echo "You have not configured the store properly. Please check your configuration files."; |
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| 54 | exit(); |
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| 55 | } |
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| 56 | |||
| 57 | /* abstract functions |
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| 58 | need implementation in your implementation of this store |
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| 59 | */ |
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| 60 | |||
| 61 | public abstract function call($template, $args, $objects); |
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| 62 | |||
| 63 | public abstract function count($objects); |
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| 64 | |||
| 65 | public abstract function info($objects); |
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| 66 | |||
| 67 | public abstract function get($path); |
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| 68 | /********************************************************************************** |
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| 69 | This function takes as argument a path to an object in the store and will retrieve |
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| 70 | all the necessary data and return this in the objectlist type needed for |
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| 71 | store->call(). If the requested path does not exist, it will retrieve the object |
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| 72 | with the longest matching path. |
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| 73 | |||
| 74 | $path should always start and end with a '/'. |
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| 75 | **********************************************************************************/ |
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| 76 | |||
| 77 | public abstract function touch($id, $timestamp = -1); |
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| 78 | /********************************************************************************** |
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| 79 | This function takes as argument a path to an object (or id of an object) |
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| 80 | in the store and will set the timestamp to $timestamp. |
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| 81 | |||
| 82 | $path should always start and end with a '/'. |
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| 83 | **********************************************************************************/ |
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| 84 | |||
| 85 | public abstract function ls($path); |
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| 86 | /********************************************************************************** |
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| 87 | This function takes as argument a path to an object in the store and will retrieve |
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| 88 | all the objects and their data which have this object as their parent. It will |
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| 89 | then return this in the objectlist type needed for store->call(). If the requested |
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| 90 | path does not exist, it will retrieve the object with the longest matching path. |
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| 91 | |||
| 92 | $path should always start and end with a '/'. |
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| 93 | **********************************************************************************/ |
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| 94 | |||
| 95 | public abstract function parents($path, $top="/"); |
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| 96 | /********************************************************************************** |
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| 97 | This function takes as argument a path to an object in the store. It will return |
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| 98 | all objects with a path which is a substring of the given path. The resulsts are |
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| 99 | ordered by path (length), shortest paths first. |
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| 100 | In effect all parents of an object in the tree are called, in order, starting at |
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| 101 | the root. |
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| 102 | |||
| 103 | $path should always start and end with a '/'. |
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| 104 | **********************************************************************************/ |
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| 105 | |||
| 106 | public abstract function find($path, $criteria, $limit=100, $offset=0); |
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| 107 | /********************************************************************************** |
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| 108 | This function takes as arguments a path to an object in the store and some search |
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| 109 | criteria. It will search for all matching objects under the given path. If the |
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| 110 | given path is not in this store but in a substore it will not automatically search |
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| 111 | that substore. |
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| 112 | |||
| 113 | $criteria is of the form |
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| 114 | |||
| 115 | $criteria ::= ({ $property_name => ({ $valuename => ({ $compare_function, $value }) }) }) |
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| 116 | |||
| 117 | e.g.: $criteria["status"]["value"][">"]="published"; |
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| 118 | |||
| 119 | $path should always start and end with a '/'. |
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| 120 | |||
| 121 | **********************************************************************************/ |
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| 122 | |||
| 123 | |||
| 124 | public abstract function save($path, $type, $data, $properties="", $vtype="", $priority=false); |
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| 125 | /*************************************************************** |
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| 126 | This function takes as argument a path, type, objectdata and |
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| 127 | possibly a properties list and vtype (virtual type). |
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| 128 | If there exists no object with the given path, a new object is |
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| 129 | saved with the given type, data, properties and vtype, and a |
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| 130 | new path is saved pointing to it. |
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| 131 | If there does exist an object with the given path, it's object |
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| 132 | data is overwritten with the given data and if vtype is set the |
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| 133 | current vtype is overwritten with the new one. |
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| 134 | |||
| 135 | $path must be an absolute path (containing no '..' and starting |
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| 136 | with '/') |
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| 137 | $type must be a valid type |
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| 138 | $data can be any string (usually a serialized object.) |
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| 139 | $properties is a multidimensional hash of the following form: |
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| 140 | $properties[{property_name}][][{value_name}]={value} |
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| 141 | {property_name} must be a valid property name |
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| 142 | {value_name} must be a valid value name for this property |
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| 143 | {value} can be a number, boolean or string. |
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| 144 | example: |
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| 145 | $properties["name"][0]["value"]="A name"; |
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| 146 | $properties["name"][1]["value"]="A second name!"; |
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| 147 | if $properties["name"]=1 then all properties for property name |
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| 148 | will be removed. |
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| 149 | |||
| 150 | $vtype must be a valid type. |
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| 151 | |||
| 152 | if $properties or $vtype are not set or empty ("",0 or false) |
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| 153 | they will be ignored. $vtype defaults to $type. |
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| 154 | Only those properties listed in $properties will be updated. |
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| 155 | Any other property set will remain as it was. |
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| 156 | ***************************************************************/ |
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| 157 | |||
| 158 | |||
| 159 | protected abstract function purge($path); |
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| 160 | /********************************************************************** |
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| 161 | This function will delete the object pointed to by $path and all |
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| 162 | other paths pointing to that object. It will then remove any property |
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| 163 | for this object from all property tables. |
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| 164 | The function returns the number of paths found and removed or 1 if |
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| 165 | there was no path found (meaning that the object doesn't exist and |
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| 166 | therefor purge succeeded while doing nothing.) |
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| 167 | |||
| 168 | $path should always start and end with a '/'. |
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| 169 | **********************************************************************/ |
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| 170 | |||
| 171 | public abstract function delete($path); |
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| 172 | /********************************************************************** |
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| 173 | This function deletes the path given. If this is the last path pointing |
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| 174 | to an object, the object will be purged instead. |
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| 175 | |||
| 176 | $path should always start and end with a '/'. |
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| 177 | **********************************************************************/ |
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| 178 | |||
| 179 | abstract function exists($path); |
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| 180 | /********************************************************************** |
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| 181 | This function checks the given path to see if it exists. If it does |
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| 182 | it returns the id of the object to which it points. Otherwise it returns |
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| 183 | 0. |
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| 184 | |||
| 185 | $path should always start and end with a '/'. |
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| 186 | **********************************************************************/ |
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| 187 | |||
| 188 | |||
| 189 | public abstract function link($source, $destination); |
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| 190 | /********************************************************************** |
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| 191 | Link adds an extra path to an already existing object. It has two |
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| 192 | arguments: $source and $destination. $source is an existing path of |
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| 193 | an object, $destination is the new path. $destination must not already |
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| 194 | exist. |
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| 195 | |||
| 196 | $destination should always start and end with a '/'. |
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| 197 | **********************************************************************/ |
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| 198 | |||
| 199 | public abstract function move($source, $destination); |
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| 200 | /********************************************************************** |
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| 201 | $destination should always start and end with a '/'. |
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| 202 | **********************************************************************/ |
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| 203 | |||
| 204 | |||
| 205 | public abstract function list_paths($path); |
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| 206 | /********************************************************************** |
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| 207 | This function returns an array of all paths pointing to the same object |
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| 208 | as $path does. |
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| 209 | **********************************************************************/ |
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| 210 | |||
| 211 | public abstract function AR_implements($type, $implements); |
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| 212 | /********************************************************************** |
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| 213 | This function returns 1 if the $type implements the type or |
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| 214 | interface in $implements. Otherwise it returns 0. |
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| 215 | **********************************************************************/ |
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| 216 | |||
| 217 | public abstract function load_properties($object, $values=""); |
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| 218 | |||
| 219 | public abstract function load_property($object, $property, $values=""); |
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| 220 | |||
| 221 | public abstract function add_property($object, $property, $values); |
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| 222 | |||
| 223 | public abstract function del_property($object, $property="", $values=""); |
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| 224 | |||
| 225 | protected abstract function get_nextid($path, $mask="{5:id}"); |
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| 226 | /********************************************************************** |
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| 227 | 'private' function of mysql store. This will return the next |
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| 228 | 'autoid' for $path. |
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| 229 | **********************************************************************/ |
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| 230 | |||
| 231 | |||
| 232 | |||
| 233 | /* |
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| 234 | Implemented functions |
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| 235 | */ |
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| 236 | |||
| 237 | 70 | public function get_config($field) { |
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| 238 | switch ($field) { |
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| 239 | 70 | case 'code': |
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| 240 | 52 | case 'files': |
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| 241 | 49 | case 'root': |
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| 242 | 48 | case 'rootoptions': |
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| 243 | 70 | $result = $this->$field; |
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| 244 | 70 | break; |
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| 245 | default: |
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| 246 | $result = null; |
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| 247 | debug("store::get_config: undefined field $field requested","store"); |
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| 248 | break; |
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| 249 | } |
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| 250 | 70 | return $result; |
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| 251 | } |
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| 252 | |||
| 253 | 60 | public function is_supported($feature) { |
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| 254 | /********************************************************************************** |
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| 255 | This function takes as argument a feature description and returns |
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| 256 | true if this feature is supported and false otherwise |
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| 257 | **********************************************************************************/ |
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| 258 | 60 | $result = false; |
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| 259 | switch($feature) { |
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| 260 | // features depending on config values |
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| 261 | 60 | case 'fulltext_boolean': |
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| 262 | 60 | case 'fulltext': |
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| 263 | 48 | if ($this->config[$feature]) { |
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| 264 | 24 | $result = true; |
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| 265 | 12 | } else { |
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| 266 | 24 | $result = false; |
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| 267 | } |
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| 268 | 48 | break; |
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| 269 | // features depending store implementation, if stores don't implements this, they have to override this function |
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| 270 | 60 | case 'grants': |
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| 271 | 30 | case 'regexp': |
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| 272 | 60 | $result = true; |
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| 273 | 60 | break; |
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| 274 | } |
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| 275 | 60 | return $result; |
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| 276 | } |
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| 277 | |||
| 278 | /********************************************************************************** |
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| 279 | This functions creates a new ariadne object |
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| 280 | **********************************************************************************/ |
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| 281 | 140 | public function newobject($path, $parent, $type, $data, $id=0, $lastchanged=0, $vtype="", $size=0, $priority=0) { |
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| 282 | 140 | global $ARnls; |
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| 283 | 140 | $class = $type; |
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| 284 | 140 | if ($subcpos = strpos($type, '.')) { |
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| 285 | 24 | $class = substr($type, 0, $subcpos); |
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| 286 | 24 | $vtype = $class; |
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| 287 | 12 | } |
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| 288 | 140 | if (!class_exists($class, false)) { |
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| 289 | include_once($this->code."objects/".$class.".phtml"); |
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| 290 | } |
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| 291 | 140 | $object=new $class; |
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| 292 | 140 | $object->type=$type; |
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| 293 | 140 | $object->parent=$parent; |
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| 294 | 140 | $object->id=(int)$id; |
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| 295 | 140 | $object->lastchanged=(int)$lastchanged; |
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| 296 | 140 | $object->vtype=$vtype; |
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| 297 | 140 | $object->size=(int)$size; |
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| 298 | 140 | $object->priority=(int)$priority; |
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| 299 | 140 | $object->ARnls = $ARnls; |
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| 300 | 140 | $object->init($this, $path, $data); |
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| 301 | 140 | return $object; |
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| 302 | } |
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| 303 | |||
| 304 | 90 | public function close() { |
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| 305 | // This is the destructor function, nothing much to see :) |
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| 306 | 90 | if (is_array($this->_filestores)) { |
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| 307 | foreach ($this->_filestores as $filestore) { |
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| 308 | $filestore->close(); |
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| 309 | } |
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| 310 | } |
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| 311 | 90 | } |
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| 312 | |||
| 313 | 90 | public function __destruct() { |
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| 314 | 90 | $this->close(); |
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| 315 | 90 | } |
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| 316 | |||
| 317 | 112 | public function make_path($curr_dir, $path) { |
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| 318 | 112 | return \arc\path::collapse($path, $curr_dir); |
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| 319 | } |
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| 320 | |||
| 321 | 68 | public function save_properties($properties, $id) { |
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| 339 | |||
| 340 | |||
| 341 | 102 | public function get_filestore($name) { |
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| 354 | |||
| 355 | 28 | public function get_filestore_svn($name) { |
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| 356 | 28 | require_once($this->code."modules/mod_filestore_svn.phtml"); |
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| 357 | 28 | if (!$this->_filestores["svn_" . $name]) { |
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| 358 | 28 | $this->_filestores["svn_" . $name] = new filestore_svn($name, $this->files, $this); |
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| 359 | 14 | } |
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| 360 | 28 | return $this->_filestores["svn_" . $name]; |
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| 361 | } |
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| 362 | |||
| 363 | 26 | protected function compilerFactory(){ |
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| 364 | 26 | switch($this->config["dbms"]){ |
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| 365 | 26 | case 'axstore': |
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| 366 | return false; |
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| 367 | 13 | default: |
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| 368 | 26 | $compiler = $this->config["dbms"].'_compiler'; |
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| 369 | 26 | return new $compiler($this,$this->tbl_prefix); |
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| 370 | 13 | } |
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| 371 | } |
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| 372 | |||
| 373 | 68 | protected function serialize($value, $path) { |
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| 374 | 68 | if ($value->failedDecrypt && $value->originalData) { |
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| 375 | $value = $value->originalData; |
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| 376 | return $value; |
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| 377 | } |
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| 378 | |||
| 379 | // Notice: When upgrading to a new crypto format, prepend the object data with a key of the crypto. This way you can be backwards compatible but new objects will be saved in the new crypto. |
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| 380 | 68 | if ($this->config['crypto'] instanceof \Closure) { |
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| 381 | 17 | $crypto = $this->config['crypto'](); |
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| 382 | // use the last crypto configured; |
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| 383 | 17 | $cryptoConfig = end($crypto); |
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| 384 | 17 | if (is_array($cryptoConfig['paths'])) { |
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| 417 | |||
| 418 | 140 | protected function unserialize($value, $path) { |
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| 459 | |||
| 460 | } |
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| 461 |
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.