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- <?php
-
-
- namespace yii\caching;
-
- use yii\base\Component;
- use yii\helpers\StringHelper;
-
-
- abstract class Cache extends Component implements \ArrayAccess
- {
-
-
- public $keyPrefix;
-
-
- public $serializer;
-
-
-
-
- public function buildKey($key)
- {
- if (is_string($key)) {
- $key = ctype_alnum($key) && StringHelper::byteLength($key) <= 32 ? $key : md5($key);
- } else {
- $key = md5(json_encode($key));
- }
-
- return $this->keyPrefix . $key;
- }
-
-
-
- public function get($key)
- {
- $key = $this->buildKey($key);
- $value = $this->getValue($key);
- if ($value === false || $this->serializer === false) {
- return $value;
- } elseif ($this->serializer === null) {
- $value = unserialize($value);
- } else {
- $value = call_user_func($this->serializer[1], $value);
- }
- if (is_array($value) && !($value[1] instanceof Dependency && $value[1]->getHasChanged($this))) {
- return $value[0];
- } else {
- return false;
- }
- }
-
-
-
- public function exists($key)
- {
- $key = $this->buildKey($key);
- $value = $this->getValue($key);
-
- return $value !== false;
- }
-
-
-
- public function mget($keys)
- {
- return $this->multiGet($keys);
- }
-
-
-
- public function multiGet($keys)
- {
- $keyMap = [];
- foreach ($keys as $key) {
- $keyMap[$key] = $this->buildKey($key);
- }
- $values = $this->getValues(array_values($keyMap));
- $results = [];
- foreach ($keyMap as $key => $newKey) {
- $results[$key] = false;
- if (isset($values[$newKey])) {
- if ($this->serializer === false) {
- $results[$key] = $values[$newKey];
- } else {
- $value = $this->serializer === null ? unserialize($values[$newKey])
- : call_user_func($this->serializer[1], $values[$newKey]);
-
- if (is_array($value) && !($value[1] instanceof Dependency && $value[1]->getHasChanged($this))) {
- $results[$key] = $value[0];
- }
- }
- }
- }
-
- return $results;
- }
-
-
-
- public function set($key, $value, $duration = 0, $dependency = null)
- {
- if ($dependency !== null && $this->serializer !== false) {
- $dependency->evaluateDependency($this);
- }
- if ($this->serializer === null) {
- $value = serialize([$value, $dependency]);
- } elseif ($this->serializer !== false) {
- $value = call_user_func($this->serializer[0], [$value, $dependency]);
- }
- $key = $this->buildKey($key);
-
- return $this->setValue($key, $value, $duration);
- }
-
-
-
- public function mset($items, $duration = 0, $dependency = null)
- {
- return $this->multiSet($items, $duration, $dependency);
- }
-
-
-
- public function multiSet($items, $duration = 0, $dependency = null)
- {
- if ($dependency !== null && $this->serializer !== false) {
- $dependency->evaluateDependency($this);
- }
-
- $data = [];
- foreach ($items as $key => $value) {
- if ($this->serializer === null) {
- $value = serialize([$value, $dependency]);
- } elseif ($this->serializer !== false) {
- $value = call_user_func($this->serializer[0], [$value, $dependency]);
- }
-
- $key = $this->buildKey($key);
- $data[$key] = $value;
- }
-
- return $this->setValues($data, $duration);
- }
-
-
-
- public function madd($items, $duration = 0, $dependency = null)
- {
- return $this->multiAdd($items, $duration, $dependency);
- }
-
-
-
- public function multiAdd($items, $duration = 0, $dependency = null)
- {
- if ($dependency !== null && $this->serializer !== false) {
- $dependency->evaluateDependency($this);
- }
-
- $data = [];
- foreach ($items as $key => $value) {
- if ($this->serializer === null) {
- $value = serialize([$value, $dependency]);
- } elseif ($this->serializer !== false) {
- $value = call_user_func($this->serializer[0], [$value, $dependency]);
- }
-
- $key = $this->buildKey($key);
- $data[$key] = $value;
- }
-
- return $this->addValues($data, $duration);
- }
-
-
-
- public function add($key, $value, $duration = 0, $dependency = null)
- {
- if ($dependency !== null && $this->serializer !== false) {
- $dependency->evaluateDependency($this);
- }
- if ($this->serializer === null) {
- $value = serialize([$value, $dependency]);
- } elseif ($this->serializer !== false) {
- $value = call_user_func($this->serializer[0], [$value, $dependency]);
- }
- $key = $this->buildKey($key);
-
- return $this->addValue($key, $value, $duration);
- }
-
-
-
- public function delete($key)
- {
- $key = $this->buildKey($key);
-
- return $this->deleteValue($key);
- }
-
-
-
- public function flush()
- {
- return $this->flushValues();
- }
-
-
-
- abstract protected function getValue($key);
-
-
-
- abstract protected function setValue($key, $value, $duration);
-
-
-
- abstract protected function addValue($key, $value, $duration);
-
-
-
- abstract protected function deleteValue($key);
-
-
-
- abstract protected function flushValues();
-
-
-
- protected function getValues($keys)
- {
- $results = [];
- foreach ($keys as $key) {
- $results[$key] = $this->getValue($key);
- }
-
- return $results;
- }
-
-
-
- protected function setValues($data, $duration)
- {
- $failedKeys = [];
- foreach ($data as $key => $value) {
- if ($this->setValue($key, $value, $duration) === false) {
- $failedKeys[] = $key;
- }
- }
-
- return $failedKeys;
- }
-
-
-
- protected function addValues($data, $duration)
- {
- $failedKeys = [];
- foreach ($data as $key => $value) {
- if ($this->addValue($key, $value, $duration) === false) {
- $failedKeys[] = $key;
- }
- }
-
- return $failedKeys;
- }
-
-
-
- public function offsetExists($key)
- {
- return $this->get($key) !== false;
- }
-
-
-
- public function offsetGet($key)
- {
- return $this->get($key);
- }
-
-
-
- public function offsetSet($key, $value)
- {
- $this->set($key, $value);
- }
-
-
-
- public function offsetUnset($key)
- {
- $this->delete($key);
- }
- }
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