3 namespace Org\Mxchange\CoreFramework\Iterator\Registry;
5 // Import framework stuff
6 use Org\Mxchange\CoreFramework\EntryPoint\ApplicationEntryPoint;
7 use Org\Mxchange\CoreFramework\Generic\FrameworkInterface;
8 use Org\Mxchange\CoreFramework\Generic\NullPointerException;
9 use Org\Mxchange\CoreFramework\Iterator\BaseIterator;
10 use Org\Mxchange\CoreFramework\Registry\Register;
11 use Org\Mxchange\CoreFramework\Registry\Registerable;
12 use Org\Mxchange\CoreFramework\Registry\Sub\SubRegistry;
13 use Org\Mxchange\CoreFramework\Traits\Registry\RegisterTrait;
16 use \BadMethodCallException;
18 use \UnexpectedValueException;
23 * @author Roland Haeder <webmaster@ship-simu.org>
25 * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2023 Core Developer Team
26 * @license GNU GPL 3.0 or any newer version
27 * @link http://www.ship-simu.org
29 * This program is free software: you can redistribute it and/or modify
30 * it under the terms of the GNU General Public License as published by
31 * the Free Software Foundation, either version 3 of the License, or
32 * (at your option) any later version.
34 * This program is distributed in the hope that it will be useful,
35 * but WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 * GNU General Public License for more details.
39 * You should have received a copy of the GNU General Public License
40 * along with this program. If not, see <http://www.gnu.org/licenses/>.
42 class RegistryIterator extends BaseIterator implements IteratableRegistry {
47 * All found registry keys
49 private $registryKeys = [];
52 * An array containing keys ob sub-registries which keys should only be
53 * included in the iterator.
55 private $onlyRegistries = [];
63 * Protected constructor
67 private function __construct () {
68 // Call parent constructor
69 parent::__construct(__CLASS__);
71 // Init registry keys array
72 $this->registryKeys = [
81 * Creates an instance of this class
83 * @param $registryInstance An instance of a Register class
84 * @return $iteratorInstance An instance of a Iterator class
86 public final static function createRegistryIterator (Register $registryInstance) {
88 $iteratorInstance = new RegistryIterator();
91 $iteratorInstance->setRegistryInstance($registryInstance);
93 // Return the prepared instance
94 return $iteratorInstance;
98 * Setter for only-registries array
100 * @param $onlyRegistries Array with keys only being iterated over
103 private function setOnlyRegistries (array $onlyRegistries) {
104 $this->onlyRegistries = $onlyRegistries;
108 * Initializes this iterator by scanning over the registry for all keys.
110 * @param $onlyRegistries Only iterate on these sub-registry keys, default is all
112 * @throws LogicException If a registry entry does not implement Registerable
113 * @throws NullPointerException If criteriaKey or criteriaMethod is not set but a call-back instance is set
115 public function initIterator (array $onlyRegistries = []) {
116 // Set it in this registry
117 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('REGISTRY-ITERATOR: onlyRegistries()=%d - CALLED!', count($onlyRegistries)));
118 $this->setOnlyRegistries($onlyRegistries);
120 // Get generic registry entries from it
121 $entries = $this->getRegistryInstance()->getGenericRegistry();
123 // Anything in there?
124 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[generic]: entries()=%d', count($entries)));
125 if (count($entries) > 0) {
127 /* DEBUG-DIE: */ ApplicationEntryPoint::exitApplication(sprintf('[%s:%d]: UNFINISHED: entries=%s', __METHOD__, __LINE__, print_r($entries, TRUE)));
130 // Get instance registry entries from it
131 $entries = $this->getRegistryInstance()->getInstanceRegistry();
133 // Anything in there?
134 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[instance]: entries()=%d', count($entries)));
135 if (count($entries) > 0) {
137 foreach ($entries as $key => $entry) {
138 // Is an unwanted registry found?
139 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[instance]: key=%s,entry[]=%s', $key, gettype($entry)));
140 if (substr($key, -8, 8) == 'registry') {
142 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[instance]: key=%s is a registry key, skipping ...', $key));
146 // Is it an instance of a sub-registry?
147 if (count($onlyRegistries) > 0 && !in_array($key, $onlyRegistries, TRUE)) {
148 // Not in requested registries
149 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[instance]: key=%s is not wanted, skipping ...', $key));
151 } elseif ($entry instanceof SubRegistry) {
152 // Get iterator from this instance
153 $subRegistryInstances = $entry->getInstanceRegistry();
155 // Add all sub-registry keys to this registry keys array
156 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[instance]: subRegistryInstances()=%d', count($subRegistryInstances)));
157 //* DEBUG-DIE: */ ApplicationEntryPoint::exitApplication(sprintf('[%s:%d]: key=%s,subRegistryInstances=%s', __METHOD__, __LINE__, $key, print_r($subRegistryInstances, TRUE)));
158 foreach (array_keys($subRegistryInstances) as $subKey) {
160 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[instance]: Adding key=%s,subKey=%s ...', $key, $subKey));
161 array_push($this->registryKeys['instance'], $subKey);
163 // Is the current key set?
164 if (is_null($this->key)) {
166 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[instance]: Setting subKey=%s as first key ...', $subKey));
167 $this->key = $subKey;
173 } elseif (!($entry instanceof Registerable)) {
174 // Not registerable?!
175 throw new LogicException(sprintf('entry[]=%s does not implement Registerable.', gettype($entry)), FrameworkInterface::EXCEPTION_LOGIC_EXCEPTION);
178 // Is the current key set?
179 if (is_null($this->key)) {
181 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[instance]: Setting key=%s as first key ...', $key));
186 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[instance]: key=%s - Adding ...', $key));
187 //* DEBUG-DIE: */ ApplicationEntryPoint::exitApplication(sprintf('[%s:%d]: key=%s,entry=%s', __METHOD__, __LINE__, $key, print_r($entry, TRUE)));
188 array_push($this->registryKeys['instance'], $key);
193 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('REGISTRY-ITERATOR: EXIT!');
197 * Getter for all registry keys (array)
199 * @return $registryKeys Registry keys
201 public final function getRegistryKeys () {
203 return $this->registryKeys;
207 * Getter for current value from group or generic
209 * @return $current Current value in iteration
210 * @throws NullPointerException If current key points to a non-existing entry in searched registries
212 public function current () {
214 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('REGISTRY-ITERATOR[%s]: CALLED!', $this->key()));
215 //* DEBUG-DIE: */ ApplicationEntryPoint::exitApplication(sprintf('[%s:%d]: this->key(%d)[%s]=%s,this->valid=%d,this->registryKeys=%s', __METHOD__, __LINE__, strlen($this->key()), gettype($this->key()), $this->key(), intval($this->valid()), print_r($this->registryKeys, TRUE)));
219 // Get all registries
220 $allRegistries = $this->getRegistryInstance()->getInstanceRegistry();
222 // Loop through all sub-sets
223 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[%s]: allRegistries()=%d', $this->key(), count($allRegistries)));
224 foreach ($allRegistries as $registryKey => $registryInstance) {
225 // Is this key wanted?
226 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[%s]: registryKey=%s', $this->key(), $registryKey));
227 if (count($this->onlyRegistries) == 0 || in_array($registryKey, $this->onlyRegistries)) {
228 // Yes, then loop through them only
229 $instances = $registryInstance->getInstanceRegistry();
231 // The key should be there
232 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[%s]: Handling registryKey=%s ...', $this->key(), $registryKey));
233 //* DEBUG-DIE: */ ApplicationEntryPoint::exitApplication(sprintf('[%s:%d]: instances=%s', __METHOD__, __LINE__, print_r($instances, TRUE)));
234 if (!isset($instances[$this->key()])) {
236 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[%s]: registryKey=%s has no this->key=%s, skipping ...', $this->key(), $registryKey, $this->key()));
240 // Set as current element and leave loop
241 $current = $instances[$this->key()];
242 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[%s]: registryKey=%s,current=%s found. - BREAK!', $this->key(), $registryKey, $current->__toString()));
247 // Is current still NULL?
248 if (is_null($current)) {
249 // This cannot happen and indicates a logic error
250 throw new NullPointerException($this, self::EXCEPTION_IS_NULL_POINTER);
254 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('REGISTRY-ITERATOR[%s]: current[%s]=%s - EXIT!', $this->key(), gettype($current), $current));
259 * Getter for key from group or generic
261 * @return $key Current key in iteration
263 public function key () {
265 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('REGISTRY-ITERATOR[%s]: EXIT!', $this->key));
270 * Advances to the next entry
273 * @throws BadMethodCallException If $this->valid() returns FALSE
274 * @throws UnexpectedValueException If $registryType is not changed
276 public function next () {
277 // Is valid() still TRUE?
278 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('REGISTRY-ITERATOR[%s]: CALLED!', $this->key()));
279 //* DEBUG-DIE: */ ApplicationEntryPoint::exitApplication(sprintf('[%s:%d]: this->key(%d)[%s]=%s,this->valid=%d,this->registryKeys=%s', __METHOD__, __LINE__, strlen($this->key()), gettype($this->key()), $this->key(), intval($this->valid()), print_r($this->registryKeys, TRUE)));
280 if (!$this->valid()) {
282 throw new BadMethodCallException(sprintf('this->key[%s]=%s is no longer valid, but method was called.', gettype($this->key()), $this->key()), FrameworkInterface::EXCEPTION_BAD_METHOD_CALL);
283 } elseif ((count($this->registryKeys['generic']) == 0) && (count($this->registryKeys['instance']) == 0)) {
284 // Both arrays are empty
285 throw new BadMethodCallException('No array elements in "generic" and "instance" found but method called.', FrameworkInterface::EXCEPTION_BAD_METHOD_CALL);
288 // Default is not valid
290 $isNextValid = FALSE;
291 $registryType = 'invalid';
293 // Get first array element ...
294 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[%s]: this->registryKeys[generic]()=%d,this->registryKeys[instance]()=%d', $this->key(), count($this->registryKeys['generic']), count($this->registryKeys['instance'])));
295 if (count($this->registryKeys['generic']) > 0) {
296 // First generic array
297 /* UNFINISHED */ ApplicationEntryPoint::exitApplication(sprintf('[%s:%d]: this->key(%d)[%s]=%s,this->valid=%d,this->registryKeys=%s', __METHOD__, __LINE__, strlen($this->key()), gettype($this->key()), $this->key(), intval($this->valid()), print_r($this->registryKeys, TRUE)));
298 } elseif (count($this->registryKeys['instance']) > 0) {
299 // Second instance, current key's index + 1
300 $nextIndex = array_search($this->key(), $this->registryKeys['instance']) + 1;
301 $isNextValid = isset($this->registryKeys['instance'][$nextIndex]);
302 $registryType = 'instance';
305 // Is it still valid?
306 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[%s]: isNextValid=%d', $this->key(), intval($isNextValid)));
309 throw new BadMethodCallException(sprintf('this->key=%s is last key in this iteration. Forgot to invoke valid() before?', $this->key()), FrameworkInterface::EXCEPTION_BAD_METHOD_CALL);
310 } elseif ($registryType == 'invalid') {
312 throw new UnexpectedValueException('registryType has not been changed.', FrameworkInterface::EXCEPTION_UNEXPECTED_VALUE);
315 // Yes, then advance to that entry
316 $this->key = $this->registryKeys[$registryType][$nextIndex];
319 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('REGISTRY-ITERATOR[%s]: EXIT!', $this->key()));
323 * Rewinds to the beginning of the iteration
326 * @throws BadMethodCallException If $this->key is already the first element
328 public function rewind () {
329 // Is current key first key?
330 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('REGISTRY-ITERATOR[%s]: CALLED!', $this->key()));
331 //* DEBUG-DIE: */ ApplicationEntryPoint::exitApplication(sprintf('[%s:%d]: this->key(%d)[%s]=%s,this->valid=%d,this->registryKeys=%s', __METHOD__, __LINE__, strlen($this->key()), gettype($this->key()), $this->key(), intval($this->valid()), print_r($this->registryKeys, TRUE)));
332 if (array_search($this->key(), $this->getRegistryKeys()) === 0) {
333 // rewind() cannot rewind first entry!
334 throw new BadMethodCallException(sprintf('this->key=%s is already first element, but method was called.', $this->key()), FrameworkInterface::EXCEPTION_BAD_METHOD_CALL);
335 } elseif ((count($this->registryKeys['generic']) == 0) && (count($this->registryKeys['instance']) == 0)) {
336 // Both arrays are empty
337 throw new BadMethodCallException('No array elements in "generic" and "instance" found but method called.', FrameworkInterface::EXCEPTION_BAD_METHOD_CALL);
340 // Get first array element ...
341 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('REGISTRY-ITERATOR[%s]: this->registryKeys[generic]()=%d,this->registryKeys[instance]()=%d', $this->key(), count($this->registryKeys['generic']), count($this->registryKeys['instance'])));
342 if (count($this->registryKeys['generic']) > 0) {
343 // First generic array
344 /* UNFINISHED */ ApplicationEntryPoint::exitApplication(sprintf('[%s:%d]: this->key(%d)[%s]=%s,this->valid=%d,this->registryKeys=%s', __METHOD__, __LINE__, strlen($this->key()), gettype($this->key()), $this->key(), intval($this->valid()), print_r($this->registryKeys, TRUE)));
345 } elseif (count($this->registryKeys['instance']) > 0) {
347 $this->key = $this->registryKeys['instance'][0];
351 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('REGISTRY-ITERATOR[%s]: EXIT!', $this->key()));
355 * Checks wether the current entry is valid (not at the end of the list)
357 * @return $valid Whether the current key is still valid
359 public function valid () {
360 // Is the element there?
361 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('REGISTRY-ITERATOR[%s]: CALLED!', $this->key()));
362 //* DEBUG-DIE: */ ApplicationEntryPoint::exitApplication(sprintf('[%s:%d]: this->key(%d)[%s]=%s,this->registryKeys=%s', __METHOD__, __LINE__, strlen($this->key()), gettype($this->key()), $this->key(), print_r($this->registryKeys, TRUE)));
363 $valid = (in_array($this->key(), $this->registryKeys['instance']) || in_array($this->key(), $this->registryKeys['generic']));
366 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('REGISTRY-ITERATOR[%s]: valid=%d - EXIT!', $this->key(), intval($valid)));