Move into nested docroot
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Rob Davies
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13405 changed files with 0 additions and 0 deletions
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<?php
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/*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the MIT license. For more information, see
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* <http://www.doctrine-project.org>.
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*/
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namespace Doctrine\Common\Cache;
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use SQLite3;
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use SQLite3Result;
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/**
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* SQLite3 cache provider.
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*
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* @since 1.4
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* @author Jake Bell <jake@theunraveler.com>
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*/
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class SQLite3Cache extends CacheProvider
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{
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/**
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* The ID field will store the cache key.
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*/
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const ID_FIELD = 'k';
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/**
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* The data field will store the serialized PHP value.
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*/
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const DATA_FIELD = 'd';
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/**
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* The expiration field will store a date value indicating when the
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* cache entry should expire.
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*/
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const EXPIRATION_FIELD = 'e';
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/**
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* @var SQLite3
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*/
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private $sqlite;
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/**
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* @var string
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*/
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private $table;
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/**
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* Constructor.
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*
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* Calling the constructor will ensure that the database file and table
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* exist and will create both if they don't.
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*
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* @param SQLite3 $sqlite
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* @param string $table
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*/
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public function __construct(SQLite3 $sqlite, $table)
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{
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$this->sqlite = $sqlite;
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$this->table = (string) $table;
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list($id, $data, $exp) = $this->getFields();
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return $this->sqlite->exec(sprintf(
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'CREATE TABLE IF NOT EXISTS %s(%s TEXT PRIMARY KEY NOT NULL, %s BLOB, %s INTEGER)',
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$table,
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$id,
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$data,
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$exp
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));
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}
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/**
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* {@inheritdoc}
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*/
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protected function doFetch($id)
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{
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if ($item = $this->findById($id)) {
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return unserialize($item[self::DATA_FIELD]);
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}
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return false;
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}
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/**
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* {@inheritdoc}
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*/
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protected function doContains($id)
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{
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return (boolean) $this->findById($id, false);
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}
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/**
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* {@inheritdoc}
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*/
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protected function doSave($id, $data, $lifeTime = 0)
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{
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$statement = $this->sqlite->prepare(sprintf(
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'INSERT OR REPLACE INTO %s (%s) VALUES (:id, :data, :expire)',
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$this->table,
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implode(',', $this->getFields())
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));
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$statement->bindValue(':id', $id);
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$statement->bindValue(':data', serialize($data), SQLITE3_BLOB);
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$statement->bindValue(':expire', $lifeTime > 0 ? time() + $lifeTime : null);
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return $statement->execute() instanceof SQLite3Result;
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}
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/**
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* {@inheritdoc}
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*/
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protected function doDelete($id)
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{
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list($idField) = $this->getFields();
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$statement = $this->sqlite->prepare(sprintf(
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'DELETE FROM %s WHERE %s = :id',
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$this->table,
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$idField
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));
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$statement->bindValue(':id', $id);
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return $statement->execute() instanceof SQLite3Result;
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}
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/**
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* {@inheritdoc}
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*/
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protected function doFlush()
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{
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return $this->sqlite->exec(sprintf('DELETE FROM %s', $this->table));
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}
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/**
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* {@inheritdoc}
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*/
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protected function doGetStats()
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{
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// no-op.
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}
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/**
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* Find a single row by ID.
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*
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* @param mixed $id
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* @param boolean $includeData
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*
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* @return array|null
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*/
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private function findById($id, $includeData = true)
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{
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list($idField) = $fields = $this->getFields();
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if (!$includeData) {
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$key = array_search(static::DATA_FIELD, $fields);
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unset($fields[$key]);
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}
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$statement = $this->sqlite->prepare(sprintf(
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'SELECT %s FROM %s WHERE %s = :id LIMIT 1',
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implode(',', $fields),
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$this->table,
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$idField
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));
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$statement->bindValue(':id', $id, SQLITE3_TEXT);
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$item = $statement->execute()->fetchArray(SQLITE3_ASSOC);
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if ($item === false) {
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return null;
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}
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if ($this->isExpired($item)) {
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$this->doDelete($id);
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return null;
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}
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return $item;
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}
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/**
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* Gets an array of the fields in our table.
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*
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* @return array
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*/
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private function getFields()
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{
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return array(static::ID_FIELD, static::DATA_FIELD, static::EXPIRATION_FIELD);
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}
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/**
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* Check if the item is expired.
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*
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* @param array $item
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* @return boolean
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*/
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private function isExpired(array $item)
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{
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return isset($item[static::EXPIRATION_FIELD]) &&
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$item[self::EXPIRATION_FIELD] !== null &&
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$item[self::EXPIRATION_FIELD] < time();
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}
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}
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