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<?php
/**
* Joomla! Content Management System
*
* @copyright (C) 2005 Open Source Matters, Inc. <https://www.joomla.org>
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
namespace Joomla\CMS\Table;
\defined('JPATH_PLATFORM') or die;
use Joomla\CMS\Access\Rules;
use Joomla\CMS\Event\AbstractEvent;
use Joomla\CMS\Factory;
use Joomla\CMS\Filesystem\Path;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Object\CMSObject;
use Joomla\Database\DatabaseDriver;
use Joomla\Database\DatabaseQuery;
use Joomla\Event\DispatcherAwareInterface;
use Joomla\Event\DispatcherAwareTrait;
use Joomla\Event\DispatcherInterface;
use Joomla\String\StringHelper;
/**
* Abstract Table class
*
* Parent class to all tables.
*
* @since 1.7.0
*/
abstract class Table extends CMSObject implements TableInterface, DispatcherAwareInterface
{
use DispatcherAwareTrait;
/**
* Include paths for searching for Table classes.
*
* @var array
* @since 3.0.0
*/
private static $_includePaths = array();
/**
* Name of the database table to model.
*
* @var string
* @since 1.7.0
*/
protected $_tbl = '';
/**
* Name of the primary key field in the table.
*
* @var string
* @since 1.7.0
*/
protected $_tbl_key = '';
/**
* Name of the primary key fields in the table.
*
* @var array
* @since 3.0.1
*/
protected $_tbl_keys = array();
/**
* DatabaseDriver object.
*
* @var DatabaseDriver
* @since 1.7.0
*/
protected $_db;
/**
* Should rows be tracked as ACL assets?
*
* @var boolean
* @since 1.7.0
*/
protected $_trackAssets = false;
/**
* The rules associated with this record.
*
* @var Rules A Rules object.
* @since 1.7.0
*/
protected $_rules;
/**
* Indicator that the tables have been locked.
*
* @var boolean
* @since 1.7.0
*/
protected $_locked = false;
/**
* Indicates that the primary keys autoincrement.
*
* @var boolean
* @since 3.1.4
*/
protected $_autoincrement = true;
/**
* Array with alias for "special" columns such as ordering, hits etc etc
*
* @var array
* @since 3.4.0
*/
protected $_columnAlias = array();
/**
* An array of key names to be json encoded in the bind function
*
* @var array
* @since 3.3
*/
protected $_jsonEncode = array();
/**
* Indicates that columns fully support the NULL value in the database
*
* @var boolean
* @since 3.10.0
*/
protected $_supportNullValue = false;
/**
* The UCM type alias. Used for tags, content versioning etc. Leave blank to effectively disable these features.
*
* @var string
* @since 4.0.0
*/
public $typeAlias = null;
/**
* Object constructor to set table and key fields. In most cases this will
* be overridden by child classes to explicitly set the table and key fields
* for a particular database table.
*
* @param string $table Name of the table to model.
* @param mixed $key Name of the primary key field in the table or array of field names that compose the primary key.
* @param DatabaseDriver $db DatabaseDriver object.
* @param DispatcherInterface $dispatcher Event dispatcher for this table
*
* @since 1.7.0
*/
public function __construct($table, $key, DatabaseDriver $db, DispatcherInterface $dispatcher = null)
{
parent::__construct();
// Set internal variables.
$this->_tbl = $table;
// Set the key to be an array.
if (\is_string($key))
{
$key = array($key);
}
elseif (\is_object($key))
{
$key = (array) $key;
}
$this->_tbl_keys = $key;
if (\count($key) == 1)
{
$this->_autoincrement = true;
}
else
{
$this->_autoincrement = false;
}
// Set the singular table key for backwards compatibility.
$this->_tbl_key = $this->getKeyName();
$this->_db = $db;
// Initialise the table properties.
$fields = $this->getFields();
if ($fields)
{
foreach ($fields as $name => $v)
{
// Add the field if it is not already present.
if (!$this->hasField($name))
{
$this->$name = null;
}
}
}
// If we are tracking assets, make sure an access field exists and initially set the default.
if ($this->hasField('asset_id'))
{
$this->_trackAssets = true;
}
// If the access property exists, set the default.
if ($this->hasField('access'))
{
$this->access = (int) Factory::getApplication()->get('access');
}
// Create or set a Dispatcher
if (!\is_object($dispatcher) || !($dispatcher instanceof DispatcherInterface))
{
// TODO Maybe we should use a dedicated "behaviour" dispatcher for performance reasons and to prevent system plugins from butting in?
$dispatcher = Factory::getApplication()->getDispatcher();
}
$this->setDispatcher($dispatcher);
$event = AbstractEvent::create(
'onTableObjectCreate',
[
'subject' => $this,
]
);
$this->getDispatcher()->dispatch('onTableObjectCreate', $event);
}
/**
* Get the columns from database table.
*
* @param bool $reload flag to reload cache
*
* @return mixed An array of the field names, or false if an error occurs.
*
* @since 1.7.0
* @throws \UnexpectedValueException
*/
public function getFields($reload = false)
{
static $cache = null;
if ($cache === null || $reload)
{
// Lookup the fields for this table only once.
$name = $this->_tbl;
$fields = $this->_db->getTableColumns($name, false);
if (empty($fields))
{
throw new \UnexpectedValueException(sprintf('No columns found for %s table', $name));
}
$cache = $fields;
}
return $cache;
}
/**
* Static method to get an instance of a Table class if it can be found in the table include paths.
*
* To add include paths for searching for Table classes see Table::addIncludePath().
*
* @param string $type The type (name) of the Table class to get an instance of.
* @param string $prefix An optional prefix for the table class name.
* @param array $config An optional array of configuration values for the Table object.
*
* @return Table|boolean A Table object if found or boolean false on failure.
*
* @since 1.7.0
* @deprecated 5.0 Use the MvcFactory instead
*/
public static function getInstance($type, $prefix = 'JTable', $config = array())
{
// Sanitize and prepare the table class name.
$type = preg_replace('/[^A-Z0-9_\.-]/i', '', $type);
$tableClass = $prefix . ucfirst($type);
// Only try to load the class if it doesn't already exist.
if (!class_exists($tableClass))
{
// Search for the class file in the JTable include paths.
$paths = self::addIncludePath();
$pathIndex = 0;
while (!class_exists($tableClass) && $pathIndex < \count($paths))
{
if ($tryThis = Path::find($paths[$pathIndex++], strtolower($type) . '.php'))
{
// Import the class file.
include_once $tryThis;
}
}
if (!class_exists($tableClass))
{
/*
* If unable to find the class file in the Table include paths. Return false.
* The warning JLIB_DATABASE_ERROR_NOT_SUPPORTED_FILE_NOT_FOUND has been removed in 3.6.3.
* In 4.0 an Exception (type to be determined) will be thrown.
* For more info see https://github.com/joomla/joomla-cms/issues/11570
*/
return false;
}
}
// If a database object was passed in the configuration array use it, otherwise get the global one from Factory.
$db = $config['dbo'] ?? Factory::getDbo();
// Check for a possible service from the container otherwise manually instantiate the class
if (Factory::getContainer()->has($tableClass))
{
return Factory::getContainer()->get($tableClass);
}
// Instantiate a new table class and return it.
return new $tableClass($db);
}
/**
* Add a filesystem path where Table should search for table class files.
*
* @param array|string $path A filesystem path or array of filesystem paths to add.
*
* @return array An array of filesystem paths to find Table classes in.
*
* @since 1.7.0
* @deprecated 5.0 Should not be used anymore as tables are loaded through the MvcFactory
*/
public static function addIncludePath($path = null)
{
// If the internal paths have not been initialised, do so with the base table path.
if (empty(self::$_includePaths))
{
self::$_includePaths = array(__DIR__);
}
// Convert the passed path(s) to add to an array.
settype($path, 'array');
// If we have new paths to add, do so.
if (!empty($path))
{
// Check and add each individual new path.
foreach ($path as $dir)
{
// Sanitize path.
$dir = trim($dir);
// Add to the front of the list so that custom paths are searched first.
if (!\in_array($dir, self::$_includePaths))
{
array_unshift(self::$_includePaths, $dir);
}
}
}
return self::$_includePaths;
}
/**
* Method to compute the default name of the asset.
* The default name is in the form table_name.id
* where id is the value of the primary key of the table.
*
* @return string
*
* @since 1.7.0
*/
protected function _getAssetName()
{
$keys = array();
foreach ($this->_tbl_keys as $k)
{
$keys[] = (int) $this->$k;
}
return $this->_tbl . '.' . implode('.', $keys);
}
/**
* Method to return the title to use for the asset table.
*
* In tracking the assets a title is kept for each asset so that there is some context available in a unified access manager.
* Usually this would just return $this->title or $this->name or whatever is being used for the primary name of the row.
* If this method is not overridden, the asset name is used.
*
* @return string The string to use as the title in the asset table.
*
* @since 1.7.0
*/
protected function _getAssetTitle()
{
return $this->_getAssetName();
}
/**
* Method to get the parent asset under which to register this one.
*
* By default, all assets are registered to the ROOT node with ID, which will default to 1 if none exists.
* An extended class can define a table and ID to lookup. If the asset does not exist it will be created.
*
* @param Table $table A Table object for the asset parent.
* @param integer $id Id to look up
*
* @return integer
*
* @since 1.7.0
*/
protected function _getAssetParentId(Table $table = null, $id = null)
{
// For simple cases, parent to the asset root.
/** @var Asset $assets */
$assets = self::getInstance('Asset', 'JTable', array('dbo' => $this->getDbo()));
$rootId = $assets->getRootId();
if (!empty($rootId))
{
return $rootId;
}
return 1;
}
/**
* Method to append the primary keys for this table to a query.
*
* @param DatabaseQuery $query A query object to append.
* @param mixed $pk Optional primary key parameter.
*
* @return void
*
* @since 3.1.4
*/
public function appendPrimaryKeys($query, $pk = null)
{
if (\is_null($pk))
{
foreach ($this->_tbl_keys as $k)
{
$query->where($this->_db->quoteName($k) . ' = ' . $this->_db->quote($this->$k));
}
}
else
{
if (\is_string($pk))
{
$pk = array($this->_tbl_key => $pk);
}
$pk = (object) $pk;
foreach ($this->_tbl_keys as $k)
{
$query->where($this->_db->quoteName($k) . ' = ' . $this->_db->quote($pk->$k));
}
}
}
/**
* Method to get the database table name for the class.
*
* @return string The name of the database table being modeled.
*
* @since 1.7.0
*/
public function getTableName()
{
return $this->_tbl;
}
/**
* Method to get the primary key field name for the table.
*
* @param boolean $multiple True to return all primary keys (as an array) or false to return just the first one (as a string).
*
* @return mixed Array of primary key field names or string containing the first primary key field.
*
* @since 1.7.0
*/
public function getKeyName($multiple = false)
{
// Count the number of keys
if (\count($this->_tbl_keys))
{
if ($multiple)
{
// If we want multiple keys, return the raw array.
return $this->_tbl_keys;
}
else
{
// If we want the standard method, just return the first key.
return $this->_tbl_keys[0];
}
}
return '';
}
/**
* Returns the identity (primary key) value of this record
*
* @return mixed
*
* @since 4.0.0
*/
public function getId()
{
$key = $this->getKeyName();
return $this->$key;
}
/**
* Method to get the DatabaseDriver object.
*
* @return DatabaseDriver The internal database driver object.
*
* @since 1.7.0
*/
public function getDbo()
{
return $this->_db;
}
/**
* Method to set the DatabaseDriver object.
*
* @param DatabaseDriver $db A DatabaseDriver object to be used by the table object.
*
* @return boolean True on success.
*
* @since 1.7.0
*/
public function setDbo(DatabaseDriver $db)
{
$this->_db = $db;
return true;
}
/**
* Method to set rules for the record.
*
* @param mixed $input A Rules object, JSON string, or array.
*
* @return void
*
* @since 1.7.0
*/
public function setRules($input)
{
if ($input instanceof Rules)
{
$this->_rules = $input;
}
else
{
$this->_rules = new Rules($input);
}
}
/**
* Method to get the rules for the record.
*
* @return Rules object
*
* @since 1.7.0
*/
public function getRules()
{
return $this->_rules;
}
/**
* Method to reset class properties to the defaults set in the class
* definition. It will ignore the primary key as well as any private class
* properties (except $_errors).
*
* @return void
*
* @since 1.7.0
*/
public function reset()
{
$event = AbstractEvent::create(
'onTableBeforeReset',
[
'subject' => $this,
]
);
$this->getDispatcher()->dispatch('onTableBeforeReset', $event);
// Get the default values for the class from the table.
foreach ($this->getFields() as $k => $v)
{
// If the property is not the primary key or private, reset it.
if (!\in_array($k, $this->_tbl_keys) && (strpos($k, '_') !== 0))
{
$this->$k = $v->Default;
}
}
// Reset table errors
$this->_errors = array();
$event = AbstractEvent::create(
'onTableAfterReset',
[
'subject' => $this,
]
);
$this->getDispatcher()->dispatch('onTableAfterReset', $event);
}
/**
* Method to bind an associative array or object to the Table instance.This
* method only binds properties that are publicly accessible and optionally
* takes an array of properties to ignore when binding.
*
* @param array|object $src An associative array or object to bind to the Table instance.
* @param array|string $ignore An optional array or space separated list of properties to ignore while binding.
*
* @return boolean True on success.
*
* @since 1.7.0
* @throws \InvalidArgumentException
*/
public function bind($src, $ignore = array())
{
// Check if the source value is an array or object
if (!\is_object($src) && !\is_array($src))
{
throw new \InvalidArgumentException(
sprintf(
'Could not bind the data source in %1$s::bind(), the source must be an array or object but a "%2$s" was given.',
\get_class($this),
\gettype($src)
)
);
}
// If the ignore value is a string, explode it over spaces.
if (!\is_array($ignore))
{
$ignore = explode(' ', $ignore);
}
$event = AbstractEvent::create(
'onTableBeforeBind',
[
'subject' => $this,
'src' => $src,
'ignore' => $ignore
]
);
$this->getDispatcher()->dispatch('onTableBeforeBind', $event);
// If the source value is an object, get its accessible properties.
if (\is_object($src))
{
$src = get_object_vars($src);
}
// JSON encode any fields required
if (!empty($this->_jsonEncode))
{
foreach ($this->_jsonEncode as $field)
{
if (isset($src[$field]) && \is_array($src[$field]))
{
$src[$field] = json_encode($src[$field]);
}
}
}
// Bind the source value, excluding the ignored fields.
foreach ($this->getProperties() as $k => $v)
{
// Only process fields not in the ignore array.
if (!\in_array($k, $ignore))
{
if (isset($src[$k]))
{
$this->$k = $src[$k];
}
}
}
$event = AbstractEvent::create(
'onTableAfterBind',
[
'subject' => $this,
'src' => $src,
'ignore' => $ignore
]
);
$this->getDispatcher()->dispatch('onTableAfterBind', $event);
return true;
}
/**
* Method to load a row from the database by primary key and bind the fields to the Table instance properties.
*
* @param mixed $keys An optional primary key value to load the row by, or an array of fields to match.
* If not set the instance property value is used.
* @param boolean $reset True to reset the default values before loading the new row.
*
* @return boolean True if successful. False if row not found.
*
* @since 1.7.0
* @throws \InvalidArgumentException
* @throws \RuntimeException
* @throws \UnexpectedValueException
*/
public function load($keys = null, $reset = true)
{
// Pre-processing by observers
$event = AbstractEvent::create(
'onTableBeforeLoad',
[
'subject' => $this,
'keys' => $keys,
'reset' => $reset,
]
);
$this->getDispatcher()->dispatch('onTableBeforeLoad', $event);
if (empty($keys))
{
$empty = true;
$keys = array();
// If empty, use the value of the current key
foreach ($this->_tbl_keys as $key)
{
$empty = $empty && empty($this->$key);
$keys[$key] = $this->$key;
}
// If empty primary key there's is no need to load anything
if ($empty)
{
return true;
}
}
elseif (!\is_array($keys))
{
// Load by primary key.
$keyCount = \count($this->_tbl_keys);
if ($keyCount)
{
if ($keyCount > 1)
{
throw new \InvalidArgumentException('Table has multiple primary keys specified, only one primary key value provided.');
}
$keys = array($this->getKeyName() => $keys);
}
else
{
throw new \RuntimeException('No table keys defined.');
}
}
if ($reset)
{
$this->reset();
}
// Initialise the query.
$query = $this->_db->getQuery(true)
->select('*')
->from($this->_tbl);
$fields = array_keys($this->getProperties());
foreach ($keys as $field => $value)
{
// Check that $field is in the table.
if (!\in_array($field, $fields))
{
throw new \UnexpectedValueException(sprintf('Missing field in database: %s   %s.', \get_class($this), $field));
}
// Add the search tuple to the query.
$query->where($this->_db->quoteName($field) . ' = ' . $this->_db->quote($value));
}
$this->_db->setQuery($query);
$row = $this->_db->loadAssoc();
// Check that we have a result.
if (empty($row))
{
$result = false;
}
else
{
// Bind the object with the row and return.
$result = $this->bind($row);
}
// Post-processing by observers
$event = AbstractEvent::create(
'onTableAfterLoad',
[
'subject' => $this,
'result' => &$result,
'row' => $row,
]
);
$this->getDispatcher()->dispatch('onTableAfterLoad', $event);
return $result;
}
/**
* Method to perform sanity checks on the Table instance properties to ensure they are safe to store in the database.
*
* Child classes should override this method to make sure the data they are storing in the database is safe and as expected before storage.
*
* @return boolean True if the instance is sane and able to be stored in the database.
*
* @since 1.7.0
*/
public function check()
{
// Post-processing by observers
$event = AbstractEvent::create(
'onTableCheck',
[
'subject' => $this,
]
);
$this->getDispatcher()->dispatch('onTableCheck', $event);
return true;
}
/**
* Method to store a row in the database from the Table instance properties.
*
* If a primary key value is set the row with that primary key value will be updated with the instance property values.
* If no primary key value is set a new row will be inserted into the database with the properties from the Table instance.
*
* @param boolean $updateNulls True to update fields even if they are null.
*
* @return boolean True on success.
*
* @since 1.7.0
*/
public function store($updateNulls = false)
{
$result = true;
$k = $this->_tbl_keys;
// Pre-processing by observers
$event = AbstractEvent::create(
'onTableBeforeStore',
[
'subject' => $this,
'updateNulls' => $updateNulls,
'k' => $k,
]
);
$this->getDispatcher()->dispatch('onTableBeforeStore', $event);
$currentAssetId = 0;
if (!empty($this->asset_id))
{
$currentAssetId = $this->asset_id;
}
// The asset id field is managed privately by this class.
if ($this->_trackAssets)
{
unset($this->asset_id);
}
// We have to unset typeAlias since updateObject / insertObject will try to insert / update all public variables...
$typeAlias = $this->typeAlias;
unset($this->typeAlias);
try
{
// If a primary key exists update the object, otherwise insert it.
if ($this->hasPrimaryKey())
{
$this->_db->updateObject($this->_tbl, $this, $this->_tbl_keys, $updateNulls);
}
else
{
$this->_db->insertObject($this->_tbl, $this, $this->_tbl_keys[0]);
}
}
catch (\Exception $e)
{
$this->setError($e->getMessage());
$result = false;
}
$this->typeAlias = $typeAlias;
// If the table is not set to track assets return true.
if ($this->_trackAssets)
{
if ($this->_locked)
{
$this->_unlock();
}
/*
* Asset Tracking
*/
$parentId = $this->_getAssetParentId();
$name = $this->_getAssetName();
$title = $this->_getAssetTitle();
/** @var Asset $asset */
$asset = self::getInstance('Asset', 'JTable', array('dbo' => $this->getDbo()));
$asset->loadByName($name);
// Re-inject the asset id.
$this->asset_id = $asset->id;
// Check for an error.
$error = $asset->getError();
if ($error)
{
$this->setError($error);
return false;
}
else
{
// Specify how a new or moved node asset is inserted into the tree.
if (empty($this->asset_id) || $asset->parent_id != $parentId)
{
$asset->setLocation($parentId, 'last-child');
}
// Prepare the asset to be stored.
$asset->parent_id = $parentId;
$asset->name = $name;
// Respect the table field limits
$asset->title = StringHelper::substr($title, 0, 100);
if ($this->_rules instanceof Rules)
{
$asset->rules = (string) $this->_rules;
}
if (!$asset->check() || !$asset->store($updateNulls))
{
$this->setError($asset->getError());
return false;
}
else
{
// Create an asset_id or heal one that is corrupted.
if (empty($this->asset_id) || ($currentAssetId != $this->asset_id && !empty($this->asset_id)))
{
// Update the asset_id field in this table.
$this->asset_id = (int) $asset->id;
$query = $this->_db->getQuery(true)
->update($this->_db->quoteName($this->_tbl))
->set('asset_id = ' . (int) $this->asset_id);
$this->appendPrimaryKeys($query);
$this->_db->setQuery($query)->execute();
}
}
}
}
// Post-processing by observers
$event = AbstractEvent::create(
'onTableAfterStore',
[
'subject' => $this,
'result' => &$result,
]
);
$this->getDispatcher()->dispatch('onTableAfterStore', $event);
return $result;
}
/**
* Method to provide a shortcut to binding, checking and storing a Table instance to the database table.
*
* The method will check a row in once the data has been stored and if an ordering filter is present will attempt to reorder
* the table rows based on the filter. The ordering filter is an instance property name. The rows that will be reordered
* are those whose value matches the Table instance for the property specified.
*
* @param array|object $src An associative array or object to bind to the Table instance.
* @param string $orderingFilter Filter for the order updating
* @param array|string $ignore An optional array or space separated list of properties to ignore while binding.
*
* @return boolean True on success.
*
* @since 1.7.0
*/
public function save($src, $orderingFilter = '', $ignore = '')
{
// Attempt to bind the source to the instance.
if (!$this->bind($src, $ignore))
{
return false;
}
// Run any sanity checks on the instance and verify that it is ready for storage.
if (!$this->check())
{
return false;
}
// Attempt to store the properties to the database table.
if (!$this->store())
{
return false;
}
// Attempt to check the row in, just in case it was checked out.
if (!$this->checkIn())
{
return false;
}
// If an ordering filter is set, attempt reorder the rows in the table based on the filter and value.
if ($orderingFilter)
{
$filterValue = $this->$orderingFilter;
$this->reorder($orderingFilter ? $this->_db->quoteName($orderingFilter) . ' = ' . $this->_db->quote($filterValue) : '');
}
// Set the error to empty and return true.
$this->setError('');
return true;
}
/**
* Method to delete a row from the database table by primary key value.
*
* @param mixed $pk An optional primary key value to delete. If not set the instance property value is used.
*
* @return boolean True on success.
*
* @since 1.7.0
* @throws \UnexpectedValueException
*/
public function delete($pk = null)
{
if (\is_null($pk))
{
$pk = array();
foreach ($this->_tbl_keys as $key)
{
$pk[$key] = $this->$key;
}
}
elseif (!\is_array($pk))
{
$pk = array($this->_tbl_key => $pk);
}
foreach ($this->_tbl_keys as $key)
{
$pk[$key] = \is_null($pk[$key]) ? $this->$key : $pk[$key];
if ($pk[$key] === null)
{
throw new \UnexpectedValueException('Null primary key not allowed.');
}
$this->$key = $pk[$key];
}
// Pre-processing by observers
$event = AbstractEvent::create(
'onTableBeforeDelete',
[
'subject' => $this,
'pk' => $pk,
]
);
$this->getDispatcher()->dispatch('onTableBeforeDelete', $event);
// If tracking assets, remove the asset first.
if ($this->_trackAssets)
{
// Get the asset name
$name = $this->_getAssetName();
/** @var Asset $asset */
$asset = self::getInstance('Asset');
if ($asset->loadByName($name))
{
if (!$asset->delete())
{
$this->setError($asset->getError());
return false;
}
}
}
// Delete the row by primary key.
$query = $this->_db->getQuery(true)
->delete($this->_tbl);
$this->appendPrimaryKeys($query, $pk);
$this->_db->setQuery($query);
// Check for a database error.
$this->_db->execute();
// Post-processing by observers
$event = AbstractEvent::create(
'onTableAfterDelete',
[
'subject' => $this,
'pk' => $pk,
]
);
$this->getDispatcher()->dispatch('onTableAfterDelete', $event);
return true;
}
/**
* Method to check a row out if the necessary properties/fields exist.
*
* To prevent race conditions while editing rows in a database, a row can be checked out if the fields 'checked_out' and 'checked_out_time'
* are available. While a row is checked out, any attempt to store the row by a user other than the one who checked the row out should be
* held until the row is checked in again.
*
* @param integer $userId The Id of the user checking out the row.
* @param mixed $pk An optional primary key value to check out. If not set the instance property value is used.
*
* @return boolean True on success.
*
* @since 1.7.0
* @throws \UnexpectedValueException
*/
public function checkOut($userId, $pk = null)
{
// Pre-processing by observers
$event = AbstractEvent::create(
'onTableBeforeCheckout',
[
'subject' => $this,
'userId' => $userId,
'pk' => $pk,
]
);
$this->getDispatcher()->dispatch('onTableBeforeCheckout', $event);
// If there is no checked_out or checked_out_time field, just return true.
if (!$this->hasField('checked_out') || !$this->hasField('checked_out_time'))
{
return true;
}
if (\is_null($pk))
{
$pk = array();
foreach ($this->_tbl_keys as $key)
{
$pk[$key] = $this->$key;
}
}
elseif (!\is_array($pk))
{
$pk = array($this->_tbl_key => $pk);
}
foreach ($this->_tbl_keys as $key)
{
$pk[$key] = \is_null($pk[$key]) ? $this->$key : $pk[$key];
if ($pk[$key] === null)
{
throw new \UnexpectedValueException('Null primary key not allowed.');
}
}
// Get column names.
$checkedOutField = $this->getColumnAlias('checked_out');
$checkedOutTimeField = $this->getColumnAlias('checked_out_time');
// Get the current time in the database format.
$time = Factory::getDate()->toSql();
// Check the row out by primary key.
$query = $this->_db->getQuery(true)
->update($this->_tbl)
->set($this->_db->quoteName($checkedOutField) . ' = ' . (int) $userId)
->set($this->_db->quoteName($checkedOutTimeField) . ' = ' . $this->_db->quote($time));
$this->appendPrimaryKeys($query, $pk);
$this->_db->setQuery($query);
$this->_db->execute();
// Set table values in the object.
$this->$checkedOutField = (int) $userId;
$this->$checkedOutTimeField = $time;
// Post-processing by observers
$event = AbstractEvent::create(
'onTableAfterCheckout',
[
'subject' => $this,
'userId' => $userId,
'pk' => $pk,
]
);
$this->getDispatcher()->dispatch('onTableAfterCheckout', $event);
return true;
}
/**
* Method to check a row in if the necessary properties/fields exist.
*
* Checking a row in will allow other users the ability to edit the row.
*
* @param mixed $pk An optional primary key value to check out. If not set the instance property value is used.
*
* @return boolean True on success.
*
* @since 1.7.0
* @throws \UnexpectedValueException
*/
public function checkIn($pk = null)
{
// Pre-processing by observers
$event = AbstractEvent::create(
'onTableBeforeCheckin',
[
'subject' => $this,
'pk' => $pk,
]
);
$this->getDispatcher()->dispatch('onTableBeforeCheckin', $event);
// If there is no checked_out or checked_out_time field, just return true.
if (!$this->hasField('checked_out') || !$this->hasField('checked_out_time'))
{
return true;
}
if (\is_null($pk))
{
$pk = array();
foreach ($this->_tbl_keys as $key)
{
$pk[$this->$key] = $this->$key;
}
}
elseif (!\is_array($pk))
{
$pk = array($this->_tbl_key => $pk);
}
foreach ($this->_tbl_keys as $key)
{
$pk[$key] = empty($pk[$key]) ? $this->$key : $pk[$key];
if ($pk[$key] === null)
{
throw new \UnexpectedValueException('Null primary key not allowed.');
}
}
// Get column names.
$checkedOutField = $this->getColumnAlias('checked_out');
$checkedOutTimeField = $this->getColumnAlias('checked_out_time');
$nullDate = $this->_supportNullValue ? 'NULL' : $this->_db->quote($this->_db->getNullDate());
$nullID = $this->_supportNullValue ? 'NULL' : '0';
// Check the row in by primary key.
$query = $this->_db->getQuery(true)
->update($this->_tbl)
->set($this->_db->quoteName($checkedOutField) . ' = ' . $nullID)
->set($this->_db->quoteName($checkedOutTimeField) . ' = ' . $nullDate);
$this->appendPrimaryKeys($query, $pk);
$this->_db->setQuery($query);
// Check for a database error.
$this->_db->execute();
// Set table values in the object.
$this->$checkedOutField = $this->_supportNullValue ? null : 0;
$this->$checkedOutTimeField = $this->_supportNullValue ? null : '';
// Post-processing by observers
$event = AbstractEvent::create(
'onTableAfterCheckin',
[
'subject' => $this,
'pk' => $pk,
]
);
$this->getDispatcher()->dispatch('onTableAfterCheckin', $event);
Factory::getApplication()->triggerEvent('onAfterCheckin', array($this->_tbl));
return true;
}
/**
* Validate that the primary key has been set.
*
* @return boolean True if the primary key(s) have been set.
*
* @since 3.1.4
*/
public function hasPrimaryKey()
{
if ($this->_autoincrement)
{
$empty = true;
foreach ($this->_tbl_keys as $key)
{
$empty = $empty && empty($this->$key);
}
}
else
{
$query = $this->_db->getQuery(true)
->select('COUNT(*)')
->from($this->_tbl);
$this->appendPrimaryKeys($query);
$this->_db->setQuery($query);
$count = $this->_db->loadResult();
if ($count == 1)
{
$empty = false;
}
else
{
$empty = true;
}
}
return !$empty;
}
/**
* Method to increment the hits for a row if the necessary property/field exists.
*
* @param mixed $pk An optional primary key value to increment. If not set the instance property value is used.
*
* @return boolean True on success.
*
* @since 1.7.0
* @throws \UnexpectedValueException
*/
public function hit($pk = null)
{
// Pre-processing by observers
$event = AbstractEvent::create(
'onTableBeforeHit',
[
'subject' => $this,
'pk' => $pk,
]
);
$this->getDispatcher()->dispatch('onTableBeforeHit', $event);
// If there is no hits field, just return true.
if (!$this->hasField('hits'))
{
return true;
}
if (\is_null($pk))
{
$pk = array();
foreach ($this->_tbl_keys as $key)
{
$pk[$key] = $this->$key;
}
}
elseif (!\is_array($pk))
{
$pk = array($this->_tbl_key => $pk);
}
foreach ($this->_tbl_keys as $key)
{
$pk[$key] = \is_null($pk[$key]) ? $this->$key : $pk[$key];
if ($pk[$key] === null)
{
throw new \UnexpectedValueException('Null primary key not allowed.');
}
}
// Get column name.
$hitsField = $this->getColumnAlias('hits');
// Check the row in by primary key.
$query = $this->_db->getQuery(true)
->update($this->_tbl)
->set($this->_db->quoteName($hitsField) . ' = (' . $this->_db->quoteName($hitsField) . ' + 1)');
$this->appendPrimaryKeys($query, $pk);
$this->_db->setQuery($query);
$this->_db->execute();
// Set table values in the object.
$this->hits++;
// Pre-processing by observers
$event = AbstractEvent::create(
'onTableAfterHit',
[
'subject' => $this,
'pk' => $pk,
]
);
$this->getDispatcher()->dispatch('onTableAfterHit', $event);
return true;
}
/**
* Method to determine if a row is checked out and therefore uneditable by a user.
*
* If the row is checked out by the same user, then it is considered not checked out -- as the user can still edit it.
*
* @param integer $with The user ID to preform the match with, if an item is checked out by this user the function will return false.
* @param integer $against The user ID to perform the match against when the function is used as a static function.
*
* @return boolean True if checked out.
*
* @since 1.7.0
*/
public function isCheckedOut($with = 0, $against = null)
{
// Handle the non-static case.
if (isset($this) && ($this instanceof Table) && \is_null($against))
{
$checkedOutField = $this->getColumnAlias('checked_out');
$against = $this->get($checkedOutField);
}
// The item is not checked out or is checked out by the same user.
if (!$against || ($against == $with))
{
return false;
}
// This last check can only be relied on if tracking session metadata
if (Factory::getApplication()->get('session_metadata', true))
{
$db = Factory::getDbo();
$query = $db->getQuery(true)
->select('COUNT(userid)')
->from($db->quoteName('#__session'))
->where($db->quoteName('userid') . ' = ' . (int) $against);
$db->setQuery($query);
$checkedOut = (boolean) $db->loadResult();
// If a session exists for the user then it is checked out.
return $checkedOut;
}
// Assume if we got here that there is a value in the checked out column but it doesn't match the given user
return true;
}
/**
* Method to get the next ordering value for a group of rows defined by an SQL WHERE clause.
*
* This is useful for placing a new item last in a group of items in the table.
*
* @param string $where WHERE clause to use for selecting the MAX(ordering) for the table.
*
* @return integer The next ordering value.
*
* @since 1.7.0
* @throws \UnexpectedValueException
*/
public function getNextOrder($where = '')
{
// Check if there is an ordering field set
if (!$this->hasField('ordering'))
{
throw new \UnexpectedValueException(sprintf('%s does not support ordering.', \get_class($this)));
}
// Get the largest ordering value for a given where clause.
$query = $this->_db->getQuery(true)
->select('MAX(' . $this->_db->quoteName($this->getColumnAlias('ordering')) . ')')
->from($this->_tbl);
if ($where)
{
$query->where($where);
}
$this->_db->setQuery($query);
$max = (int) $this->_db->loadResult();
// Return the largest ordering value + 1.
return $max + 1;
}
/**
* Get the primary key values for this table using passed in values as a default.
*
* @param array $keys Optional primary key values to use.
*
* @return array An array of primary key names and values.
*
* @since 3.1.4
*/
public function getPrimaryKey(array $keys = array())
{
foreach ($this->_tbl_keys as $key)
{
if (!isset($keys[$key]))
{
if (!empty($this->$key))
{
$keys[$key] = $this->$key;
}
}
}
return $keys;
}
/**
* Method to compact the ordering values of rows in a group of rows defined by an SQL WHERE clause.
*
* @param string $where WHERE clause to use for limiting the selection of rows to compact the ordering values.
*
* @return mixed Boolean True on success.
*
* @since 1.7.0
* @throws \UnexpectedValueException
*/
public function reorder($where = '')
{
// Check if there is an ordering field set
if (!$this->hasField('ordering'))
{
throw new \UnexpectedValueException(sprintf('%s does not support ordering.', \get_class($this)));
}
$quotedOrderingField = $this->_db->quoteName($this->getColumnAlias('ordering'));
$subquery = $this->_db->getQuery(true)
->from($this->_tbl)
->selectRowNumber($quotedOrderingField, 'new_ordering');
$query = $this->_db->getQuery(true)
->update($this->_tbl)
->set($quotedOrderingField . ' = sq.new_ordering');
$innerOn = array();
// Get the primary keys for the selection.
foreach ($this->_tbl_keys as $i => $k)
{
$subquery->select($this->_db->quoteName($k, 'pk__' . $i));
$innerOn[] = $this->_db->quoteName($k) . ' = sq.' . $this->_db->quoteName('pk__' . $i);
}
// Setup the extra where and ordering clause data.
if ($where)
{
$subquery->where($where);
$query->where($where);
}
$subquery->where($quotedOrderingField . ' >= 0');
$query->where($quotedOrderingField . ' >= 0');
$query->innerJoin('(' . (string) $subquery . ') AS sq ');
foreach ($innerOn as $key)
{
$query->where($key);
}
// Pre-processing by observers
$event = AbstractEvent::create(
'onTableBeforeReorder',
[
'subject' => $this,
'query' => $query,
'where' => $where,
]
);
$this->getDispatcher()->dispatch('onTableBeforeReorder', $event);
$this->_db->setQuery($query);
$this->_db->execute();
// Post-processing by observers
$event = AbstractEvent::create(
'onTableAfterReorder',
[
'subject' => $this,
'where' => $where,
]
);
$this->getDispatcher()->dispatch('onTableAfterReorder', $event);
return true;
}
/**
* Method to move a row in the ordering sequence of a group of rows defined by an SQL WHERE clause.
*
* Negative numbers move the row up in the sequence and positive numbers move it down.
*
* @param integer $delta The direction and magnitude to move the row in the ordering sequence.
* @param string $where WHERE clause to use for limiting the selection of rows to compact the ordering values.
*
* @return boolean True on success.
*
* @since 1.7.0
* @throws \UnexpectedValueException
*/
public function move($delta, $where = '')
{
// Check if there is an ordering field set
if (!$this->hasField('ordering'))
{
throw new \UnexpectedValueException(sprintf('%s does not support ordering.', \get_class($this)));
}
$orderingField = $this->getColumnAlias('ordering');
$quotedOrderingField = $this->_db->quoteName($orderingField);
// If the change is none, do nothing.
if (empty($delta))
{
return true;
}
$row = null;
$query = $this->_db->getQuery(true);
// Select the primary key and ordering values from the table.
$query->select(implode(',', $this->_tbl_keys) . ', ' . $quotedOrderingField)
->from($this->_tbl);
// If the movement delta is negative move the row up.
if ($delta < 0)
{
$query->where($quotedOrderingField . ' < ' . (int) $this->$orderingField)
->order($quotedOrderingField . ' DESC');
}
// If the movement delta is positive move the row down.
elseif ($delta > 0)
{
$query->where($quotedOrderingField . ' > ' . (int) $this->$orderingField)
->order($quotedOrderingField . ' ASC');
}
// Add the custom WHERE clause if set.
if ($where)
{
$query->where($where);
}
// Pre-processing by observers
$event = AbstractEvent::create(
'onTableBeforeMove',
[
'subject' => $this,
'query' => $query,
'delta' => $delta,
'where' => $where,
]
);
$this->getDispatcher()->dispatch('onTableBeforeMove', $event);
// Select the first row with the criteria.
$query->setLimit(1);
$this->_db->setQuery($query);
$row = $this->_db->loadObject();
// If a row is found, move the item.
if (!empty($row))
{
// Update the ordering field for this instance to the row's ordering value.
$query->clear()
->update($this->_tbl)
->set($quotedOrderingField . ' = ' . (int) $row->$orderingField);
$this->appendPrimaryKeys($query);
$this->_db->setQuery($query);
$this->_db->execute();
// Update the ordering field for the row to this instance's ordering value.
$query->clear()
->update($this->_tbl)
->set($quotedOrderingField . ' = ' . (int) $this->$orderingField);
$this->appendPrimaryKeys($query, $row);
$this->_db->setQuery($query);
$this->_db->execute();
// Update the instance value.
$this->$orderingField = $row->$orderingField;
}
else
{
// Update the ordering field for this instance.
$query->clear()
->update($this->_tbl)
->set($quotedOrderingField . ' = ' . (int) $this->$orderingField);
$this->appendPrimaryKeys($query);
$this->_db->setQuery($query);
$this->_db->execute();
}
// Post-processing by observers
$event = AbstractEvent::create(
'onTableAfterMove',
[
'subject' => $this,
'row' => $row,
'delta' => $delta,
'where' => $where,
]
);
$this->getDispatcher()->dispatch('onTableAfterMove', $event);
return true;
}
/**
* Method to set the publishing state for a row or list of rows in the database table.
*
* The method respects checked out rows by other users and will attempt to checkin rows that it can after adjustments are made.
*
* @param mixed $pks An optional array of primary key values to update. If not set the instance property value is used.
* @param integer $state The publishing state. eg. [0 = unpublished, 1 = published]
* @param integer $userId The user ID of the user performing the operation.
*
* @return boolean True on success; false if $pks is empty.
*
* @since 1.7.0
*/
public function publish($pks = null, $state = 1, $userId = 0)
{
// Sanitize input
$userId = (int) $userId;
$state = (int) $state;
// Pre-processing by observers
$event = AbstractEvent::create(
'onTableBeforePublish',
[
'subject' => $this,
'pks' => $pks,
'state' => $state,
'userId' => $userId,
]
);
$this->getDispatcher()->dispatch('onTableBeforePublish', $event);
if (!\is_null($pks))
{
if (!\is_array($pks))
{
$pks = array($pks);
}
foreach ($pks as $key => $pk)
{
if (!\is_array($pk))
{
$pks[$key] = array($this->_tbl_key => $pk);
}
}
}
// If there are no primary keys set check to see if the instance key is set.
if (empty($pks))
{
$pk = array();
foreach ($this->_tbl_keys as $key)
{
if ($this->$key)
{
$pk[$key] = $this->$key;
}
// We don't have a full primary key - return false
else
{
$this->setError(Text::_('JLIB_DATABASE_ERROR_NO_ROWS_SELECTED'));
return false;
}
}
$pks = array($pk);
}
$publishedField = $this->getColumnAlias('published');
$checkedOutField = $this->getColumnAlias('checked_out');
foreach ($pks as $pk)
{
// Update the publishing state for rows with the given primary keys.
$query = $this->_db->getQuery(true)
->update($this->_tbl)
->set($this->_db->quoteName($publishedField) . ' = ' . (int) $state);
// If publishing, set published date/time if not previously set
if ($state && $this->hasField('publish_up') && (int) $this->publish_up == 0)
{
$nowDate = $this->_db->quote(Factory::getDate()->toSql());
$query->set($this->_db->quoteName($this->getColumnAlias('publish_up')) . ' = ' . $nowDate);
}
// Determine if there is checkin support for the table.
if ($this->hasField('checked_out') || $this->hasField('checked_out_time'))
{
$query->where(
'('
. $this->_db->quoteName($checkedOutField) . ' = 0'
. ' OR ' . $this->_db->quoteName($checkedOutField) . ' = ' . (int) $userId
. ' OR ' . $this->_db->quoteName($checkedOutField) . ' IS NULL'
. ')'
);
$checkin = true;
}
else
{
$checkin = false;
}
// Build the WHERE clause for the primary keys.
$this->appendPrimaryKeys($query, $pk);
$this->_db->setQuery($query);
try
{
$this->_db->execute();
}
catch (\RuntimeException $e)
{
$this->setError($e->getMessage());
return false;
}
// If checkin is supported and all rows were adjusted, check them in.
if ($checkin && (\count($pks) == $this->_db->getAffectedRows()))
{
$this->checkIn($pk);
}
// If the Table instance value is in the list of primary keys that were set, set the instance.
$ours = true;
foreach ($this->_tbl_keys as $key)
{
if ($this->$key != $pk[$key])
{
$ours = false;
}
}
if ($ours)
{
$this->$publishedField = $state;
}
}
$this->setError('');
// Pre-processing by observers
$event = AbstractEvent::create(
'onTableAfterPublish',
[
'subject' => $this,
'pks' => $pks,
'state' => $state,
'userId' => $userId,
]
);
$this->getDispatcher()->dispatch('onTableAfterPublish', $event);
return true;
}
/**
* Method to lock the database table for writing.
*
* @return boolean True on success.
*
* @since 1.7.0
* @throws \RuntimeException
*/
protected function _lock()
{
$this->_db->lockTable($this->_tbl);
$this->_locked = true;
return true;
}
/**
* Method to return the real name of a "special" column such as ordering, hits, published
* etc etc. In this way you are free to follow your db naming convention and use the
* built in \Joomla functions.
*
* @param string $column Name of the "special" column (ie ordering, hits)
*
* @return string The string that identify the special
*
* @since 3.4
*/
public function getColumnAlias($column)
{
// Get the column data if set
if (isset($this->_columnAlias[$column]))
{
$return = $this->_columnAlias[$column];
}
else
{
$return = $column;
}
// Sanitize the name
$return = preg_replace('#[^A-Z0-9_]#i', '', $return);
return $return;
}
/**
* Method to register a column alias for a "special" column.
*
* @param string $column The "special" column (ie ordering)
* @param string $columnAlias The real column name (ie foo_ordering)
*
* @return void
*
* @since 3.4
*/
public function setColumnAlias($column, $columnAlias)
{
// Sanitize the column name alias
$column = strtolower($column);
$column = preg_replace('#[^A-Z0-9_]#i', '', $column);
// Set the column alias internally
$this->_columnAlias[$column] = $columnAlias;
}
/**
* Method to unlock the database table for writing.
*
* @return boolean True on success.
*
* @since 1.7.0
*/
protected function _unlock()
{
if ($this->_locked)
{
$this->_db->unlockTables();
$this->_locked = false;
}
return true;
}
/**
* Check if the record has a property (applying a column alias if it exists)
*
* @param string $key key to be checked
*
* @return boolean
*
* @since 3.9.11
*/
public function hasField($key)
{
$key = $this->getColumnAlias($key);
return property_exists($this, $key);
}
}