File Source for table.php

<?php
/**
* @package Joomla.Platform
* @subpackage Table
*
* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
jimport('joomla.filesystem.path');
/**
* Abstract Table class
*
* Parent class to all tables.
*
* @package Joomla.Platform
* @subpackage Table
* @link http://docs.joomla.org/JTable
* @since 11.1
* @tutorial Joomla.Platform/jtable.cls
*/
abstract class JTable extends JObject implements JObservableInterface
{
/**
* Include paths for searching for JTable classes.
*
* @var array
* @since 12.1
*/
private static $_includePaths = array();
/**
* Name of the database table to model.
*
* @var string
* @since 11.1
*/
protected $_tbl = '';
/**
* Name of the primary key field in the table.
*
* @var string
* @since 11.1
*/
protected $_tbl_key = '';
/**
* Name of the primary key fields in the table.
*
* @var array
* @since 12.2
*/
protected $_tbl_keys = array();
/**
* JDatabaseDriver object.
*
* @var JDatabaseDriver
* @since 11.1
*/
protected $_db;
/**
* Should rows be tracked as ACL assets?
*
* @var boolean
* @since 11.1
*/
protected $_trackAssets = false;
/**
* The rules associated with this record.
*
* @var JAccessRules A JAccessRules object.
* @since 11.1
*/
protected $_rules;
/**
* Indicator that the tables have been locked.
*
* @var boolean
* @since 11.1
*/
protected $_locked = false;
/**
* Indicates that the primary keys autoincrement.
*
* @var boolean
* @since 12.3
*/
protected $_autoincrement = true;
/**
* Generic observers for this JTable (Used e.g. for tags Processing)
*
* @var JObserverUpdater
* @since 3.1.2
*/
protected $_observers;
/**
* 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 JDatabaseDriver $db JDatabaseDriver object.
*
* @since 11.1
*/
public function __construct($table, $key, JDatabaseDriver $db)
{
// 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 => $v)
{
// Add the field if it is not already present.
if (!property_exists($this, $name))
{
$this->$name = null;
}
}
}
// If we are tracking assets, make sure an access field exists and initially set the default.
if (property_exists($this, 'asset_id'))
{
$this->_trackAssets = true;
}
// If the access property exists, set the default.
if (property_exists($this, 'access'))
{
$this->access = (int) JFactory::getConfig()->get('access');
}
// Implement JObservableInterface:
// Create observer updater and attaches all observers interested by $this class:
$this->_observers = new JObserverUpdater($this);
JObserverMapper::attachAllObservers($this);
}
/**
* Implement JObservableInterface:
* Adds an observer to this instance.
* This method will be called fron the constructor of classes implementing JObserverInterface
* which is instanciated by the constructor of $this with JObserverMapper::attachAllObservers($this)
*
* @param JObserverInterface|JTableObserver $observer The observer object
*
* @return void
*
* @since 3.1.2
*/
public function attachObserver(JObserverInterface $observer)
{
$this->_observers->attachObserver($observer);
}
/**
* Gets the instance of the observer of class $observerClass
*
* @param string $observerClass The observer class-name to return the object of
*
* @return JTableObserver|null
*
* @since 3.1.2
*/
public function getObserverOfClass($observerClass)
{
return $this->_observers->getObserverOfClass($observerClass);
}
/**
* Get the columns from database table.
*
* @return mixed An array of the field names, or false if an error occurs.
*
* @since 11.1
* @throws UnexpectedValueException
*/
public function getFields()
{
static $cache = null;
if ($cache === null)
{
// 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 JTable class if it can be found in
* the table include paths. To add include paths for searching for JTable
* classes see JTable::addIncludePath().
*
* @param string $type The type (name) of the JTable class to get an instance of.
* @param string $prefix An optional prefix for the table class name.
* @param array $config An optional array of configuration values for the JTable object.
*
* @return mixed A JTable object if found or boolean false if one could not be found.
*
* @link http://docs.joomla.org/JTable/getInstance
* @since 11.1
*/
public static function getInstance($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.
$path = JPath::find(self::addIncludePath(), strtolower($type) . '.php');
if ($path)
{
// Import the class file.
include_once $path;
// If we were unable to load the proper class, raise a warning and return false.
if (!class_exists($tableClass))
{
JLog::add(JText::sprintf('JLIB_DATABASE_ERROR_CLASS_NOT_FOUND_IN_FILE', $tableClass), JLog::WARNING, 'jerror');
return false;
}
}
else
{
// If we were unable to find the class file in the JTable include paths, raise a warning and return false.
JLog::add(JText::sprintf('JLIB_DATABASE_ERROR_NOT_SUPPORTED_FILE_NOT_FOUND', $type), JLog::WARNING, 'jerror');
return false;
}
}
// If a database object was passed in the configuration array use it, otherwise get the global one from JFactory.
$db = isset($config['dbo']) ? $config['dbo'] : JFactory::getDbo();
// Instantiate a new table class and return it.
return new $tableClass($db);
}
/**
* Add a filesystem path where JTable should search for table class files.
* You may either pass a string or an array of paths.
*
* @param mixed $path A filesystem path or array of filesystem paths to add.
*
* @return array An array of filesystem paths to find JTable classes in.
*
* @link http://docs.joomla.org/JTable/addIncludePath
* @since 11.1
*/
public static function addIncludePath($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 11.1
*/
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.
*
* @link http://docs.joomla.org/JTable/getAssetTitle
* @since 11.1
*/
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.
* The extended class can define a table and id to lookup. If the
* asset does not exist it will be created.
*
* @param JTable $table A JTable object for the asset parent.
* @param integer $id Id to look up
*
* @return integer
*
* @since 11.1
*/
protected function _getAssetParentId(JTable $table = null, $id = null)
{
// For simple cases, parent to the asset root.
$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 JDatabaseQuery $query A query object to append.
* @param mixed $pk Optional primary key parameter.
*
* @return void
*
* @since 12.3
*/
public function appendPrimaryKeys($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 11.1
*
* @link http://docs.joomla.org/JTable/getTableName
*/
public function getTableName()
{
return $this->_tbl;
}
/**
* Method to get the primary key field name for the table.
*
* @param boolean $multiple True to return all primary keys (as an array) or false to return just the first one (as a string).
*
* @return mixed Array of primary key field names or string containing the first primary key field.
*
* @link http://docs.joomla.org/JTable/getKeyName
* @since 11.1
*/
public function getKeyName($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 '';
}
/**
* Method to get the JDatabaseDriver object.
*
* @return JDatabaseDriver The internal database driver object.
*
* @link http://docs.joomla.org/JTable/getDBO
* @since 11.1
*/
public function getDbo()
{
return $this->_db;
}
/**
* Method to set the JDatabaseDriver object.
*
* @param JDatabaseDriver $db A JDatabaseDriver object to be used by the table object.
*
* @return boolean True on success.
*
* @link http://docs.joomla.org/JTable/setDBO
* @since 11.1
*/
public function setDBO(JDatabaseDriver $db)
{
$this->_db = $db;
return true;
}
/**
* Method to set rules for the record.
*
* @param mixed $input A JAccessRules object, JSON string, or array.
*
* @return void
*
* @since 11.1
*/
public function setRules($input)
{
if ($input instanceof JAccessRules)
{
$this->_rules = $input;
}
else
{
$this->_rules = new JAccessRules($input);
}
}
/**
* Method to get the rules for the record.
*
* @return JAccessRules object
*
* @since 11.1
*/
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 $_errors).
*
* @return void
*
* @link http://docs.joomla.org/JTable/reset
* @since 11.1
*/
public function reset()
{
// Get the default values for the class from the table.
foreach ($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();
}
/**
* Method to bind an associative array or object to the JTable instance.This
* method only binds properties that are publicly accessible and optionally
* takes an array of properties to ignore when binding.
*
* @param mixed $src An associative array or object to bind to the JTable instance.
* @param mixed $ignore An optional array or space separated list of properties to ignore while binding.
*
* @return boolean True on success.
*
* @link http://docs.joomla.org/JTable/bind
* @since 11.1
* @throws InvalidArgumentException
*/
public function bind($src, $ignore = array())
{
// If the source value is not an array or object return false.
if (!is_object($src) && !is_array($src))
{
throw new InvalidArgumentException(sprintf('%s::bind(*%s*)', get_class($this), gettype($src)));
}
// If the source value is an object, get its accessible properties.
if (is_object($src))
{
$src = get_object_vars($src);
}
// If the ignore value is a string, explode it over spaces.
if (!is_array($ignore))
{
$ignore = explode(' ', $ignore);
}
// Bind the source value, excluding the ignored fields.
foreach ($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];
}
}
}
return true;
}
/**
* Method to load a row from the database by primary key and bind the fields
* to the JTable 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 $reset True to reset the default values before loading the new row.
*
* @return boolean True if successful. False if row not found.
*
* @link http://docs.joomla.org/JTable/load
* @since 11.1
* @throws InvalidArgumentException
* @throws RuntimeException
* @throws UnexpectedValueException
*/
public function load($keys = null, $reset = true)
{
// Implement JObservableInterface: Pre-processing by observers
$this->_observers->update('onBeforeLoad', array($keys, $reset));
if (empty($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);
}
// Implement JObservableInterface: Post-processing by observers
$this->_observers->update('onAfterLoad', array(&$result, $row));
return $result;
}
/**
* Method to perform sanity checks on the JTable 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.
*
* @link http://docs.joomla.org/JTable/check
* @since 11.1
*/
public function check()
{
return true;
}
/**
* Method to store a row in the database from the JTable 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
* JTable instance.
*
* @param boolean $updateNulls True to update fields even if they are null.
*
* @return boolean True on success.
*
* @link http://docs.joomla.org/JTable/store
* @since 11.1
*/
public function store($updateNulls = false)
{
$k = $this->_tbl_keys;
// Implement JObservableInterface: Pre-processing by observers
$this->_observers->update('onBeforeStore', array($updateNulls, $k));
$currentAssetId = 0;
if (!empty($this->asset_id))
{
$currentAssetId = $this->asset_id;
}
// The asset id field is managed privately by this class.
if ($this->_trackAssets)
{
unset($this->asset_id);
}
// If a primary key exists update the object, otherwise insert it.
if ($this->hasPrimaryKey())
{
$result = $this->_db->updateObject($this->_tbl, $this, $this->_tbl_keys, $updateNulls);
}
else
{
$result = $this->_db->insertObject($this->_tbl, $this, $this->_tbl_keys[0]);
}
// If the table is not set to track assets return true.
if ($this->_trackAssets)
{
if ($this->_locked)
{
$this->_unlock();
}
/*
* Asset Tracking
*/
$parentId = $this->_getAssetParentId();
$name = $this->_getAssetName();
$title = $this->_getAssetTitle();
$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;
$asset->title = $title;
if ($this->_rules instanceof JAccessRules)
{
$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();
}
}
}
}
// Implement JObservableInterface: Post-processing by observers
$this->_observers->update('onAfterStore', array(&$result));
return $result;
}
/**
* Method to provide a shortcut to binding, checking and storing a JTable
* 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 JTable instance for the property specified.
*
* @param mixed $src An associative array or object to bind to the JTable instance.
* @param string $orderingFilter Filter for the order updating
* @param mixed $ignore An optional array or space separated list of properties
* to ignore while binding.
*
* @return boolean True on success.
*
* @link http://docs.joomla.org/JTable/save
* @since 11.1
*/
public function save($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 $pk An optional primary key value to delete. If not set the instance property value is used.
*
* @return boolean True on success.
*
* @link http://docs.joomla.org/JTable/delete
* @since 11.1
* @throws UnexpectedValueException
*/
public function delete($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];
}
// Implement JObservableInterface: Pre-processing by observers
$this->_observers->update('onBeforeDelete', array($pk));
// If tracking assets, remove the asset first.
if ($this->_trackAssets)
{
// Get the asset name
$name = $this->_getAssetName();
$asset = self::getInstance('Asset');
if ($asset->loadByName($name))
{
if (!$asset->delete())
{
$this->setError($asset->getError());
return false;
}
}
else
{
$this->setError($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();
// Implement JObservableInterface: Post-processing by observers
$this->_observers->update('onAfterDelete', array($pk));
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 $pk An optional primary key value to check out. If not set
* the instance property value is used.
*
* @return boolean True on success.
*
* @link http://docs.joomla.org/JTable/checkOut
* @since 11.1
* @throws UnexpectedValueException
*/
public function checkOut($userId, $pk = null)
{
// If there is no checked_out or checked_out_time field, just return true.
if (!property_exists($this, 'checked_out') || !property_exists($this, 'checked_out_time'))
{
return true;
}
if (is_null($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 the current time in the database format.
$time = JFactory::getDate()->toSql();
// Check the row out by primary key.
$query = $this->_db->getQuery(true)
->update($this->_tbl)
->set($this->_db->quoteName('checked_out') . ' = ' . (int) $userId)
->set($this->_db->quoteName('checked_out_time') . ' = ' . $this->_db->quote($time));
$this->appendPrimaryKeys($query, $pk);
$this->_db->setQuery($query);
$this->_db->execute();
// Set table values in the object.
$this->checked_out = (int) $userId;
$this->checked_out_time = $time;
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 $pk An optional primary key value to check out. If not set the instance property value is used.
*
* @return boolean True on success.
*
* @link http://docs.joomla.org/JTable/checkIn
* @since 11.1
* @throws UnexpectedValueException
*/
public function checkIn($pk = null)
{
// If there is no checked_out or checked_out_time field, just return true.
if (!property_exists($this, 'checked_out') || !property_exists($this, '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.');
}
}
// Check the row in by primary key.
$query = $this->_db->getQuery(true)
->update($this->_tbl)
->set($this->_db->quoteName('checked_out') . ' = 0')
->set($this->_db->quoteName('checked_out_time') . ' = ' . $this->_db->quote($this->_db->getNullDate()));
$this->appendPrimaryKeys($query, $pk);
$this->_db->setQuery($query);
// Check for a database error.
$this->_db->execute();
// Set table values in the object.
$this->checked_out = 0;
$this->checked_out_time = '';
return true;
}
/**
* Validate that the primary key has been set.
*
* @return boolean True if the primary key(s) have been set.
*
* @since 12.3
*/
public function hasPrimaryKey()
{
if ($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 $pk An optional primary key value to increment. If not set the instance property value is used.
*
* @return boolean True on success.
*
* @link http://docs.joomla.org/JTable/hit
* @since 11.1
* @throws UnexpectedValueException
*/
public function hit($pk = null)
{
// If there is no hits field, just return true.
if (!property_exists($this, 'hits'))
{
return true;
}
if (is_null($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.');
}
}
// Check the row in by primary key.
$query = $this->_db->getQuery(true)
->update($this->_tbl)
->set($this->_db->quoteName('hits') . ' = (' . $this->_db->quoteName('hits') . ' + 1)');
$this->appendPrimaryKeys($query, $pk);
$this->_db->setQuery($query);
$this->_db->execute();
// Set table values in the object.
$this->hits++;
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 userid to preform the match with, if an item is checked
* out by this user the function will return false.
* @param integer $against The userid to perform the match against when the function
* is used as a static function.
*
* @return boolean True if checked out.
*
* @link http://docs.joomla.org/JTable/isCheckedOut
* @since 11.1
*/
public function isCheckedOut($with = 0, $against = null)
{
// Handle the non-static case.
if (isset($this) && ($this instanceof JTable) && is_null($against))
{
$against = $this->get('checked_out');
}
// The item is not checked out or is checked out by the same user.
if (!$against || ($against == $with))
{
return false;
}
$db = JFactory::getDbo();
$db->setQuery('SELECT COUNT(userid) FROM ' . $db->quoteName('#__session') . ' WHERE ' . $db->quoteName('userid') . ' = ' . (int) $against);
$checkedOut = (boolean) $db->loadResult();
// If a session exists for the user then it is checked out.
return $checkedOut;
}
/**
* 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 $where WHERE clause to use for selecting the MAX(ordering) for the table.
*
* @return mixed Boolean false an failure or the next ordering value as an integer.
*
* @link http://docs.joomla.org/JTable/getNextOrder
* @since 11.1
* @throws UnexpectedValueException
*/
public function getNextOrder($where = '')
{
// If there is no ordering field set an error and return false.
if (!property_exists($this, 'ordering'))
{
throw new UnexpectedValueException(sprintf('%s does not support ordering.', get_class($this)));
}
// Get the largest ordering value for a given where clause.
$query = $this->_db->getQuery(true)
->select('MAX(ordering)')
->from($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 12.3
*/
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 $where WHERE clause to use for limiting the selection of rows to compact the ordering values.
*
* @return mixed Boolean True on success.
*
* @link http://docs.joomla.org/JTable/reorder
* @since 11.1
* @throws UnexpectedValueException
*/
public function reorder($where = '')
{
// If there is no ordering field set an error and return false.
if (!property_exists($this, 'ordering'))
{
throw new UnexpectedValueException(sprintf('%s does not support ordering.', get_class($this)));
}
$k = $this->_tbl_key;
// Get the primary keys and ordering values for the selection.
$query = $this->_db->getQuery(true)
->select(implode(',', $this->_tbl_keys) . ', ordering')
->from($this->_tbl)
->where('ordering >= 0')
->order('ordering');
// Setup the extra where and ordering clause data.
if ($where)
{
$query->where($where);
}
$this->_db->setQuery($query);
$rows = $this->_db->loadObjectList();
// Compact the ordering values.
foreach ($rows as $i => $row)
{
// Make sure the ordering is a positive integer.
if ($row->ordering >= 0)
{
// Only update rows that are necessary.
if ($row->ordering != $i + 1)
{
// Update the row ordering field.
$query->clear()
->update($this->_tbl)
->set('ordering = ' . ($i + 1));
$this->appendPrimaryKeys($query, $row);
$this->_db->setQuery($query);
$this->_db->execute();
}
}
}
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 $where WHERE clause to use for limiting the selection of rows to compact the
* ordering values.
*
* @return mixed Boolean True on success.
*
* @link http://docs.joomla.org/JTable/move
* @since 11.1
* @throws UnexpectedValueException
*/
public function move($delta, $where = '')
{
// If there is no ordering field set an error and return false.
if (!property_exists($this, 'ordering'))
{
throw new UnexpectedValueException(sprintf('%s does not support ordering.', get_class($this)));
}
// If the change is none, do nothing.
if (empty($delta))
{
return true;
}
$k = $this->_tbl_key;
$row = null;
$query = $this->_db->getQuery(true);
// Select the primary key and ordering values from the table.
$query->select(implode(',', $this->_tbl_keys) . ', ordering')
->from($this->_tbl);
// If the movement delta is negative move the row up.
if ($delta < 0)
{
$query->where('ordering < ' . (int) $this->ordering)
->order('ordering DESC');
}
// If the movement delta is positive move the row down.
elseif ($delta > 0)
{
$query->where('ordering > ' . (int) $this->ordering)
->order('ordering ASC');
}
// Add the custom WHERE clause if set.
if ($where)
{
$query->where($where);
}
// Select the first row with the criteria.
$this->_db->setQuery($query, 0, 1);
$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('ordering = ' . (int) $row->ordering);
$this->appendPrimaryKeys($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('ordering = ' . (int) $this->ordering);
$this->appendPrimaryKeys($query, $row);
$this->_db->setQuery($query);
$this->_db->execute();
// Update the instance value.
$this->ordering = $row->ordering;
}
else
{
// Update the ordering field for this instance.
$query->clear()
->update($this->_tbl)
->set('ordering = ' . (int) $this->ordering);
$this->appendPrimaryKeys($query);
$this->_db->setQuery($query);
$this->_db->execute();
}
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 $pks is empty.
*
* @link http://docs.joomla.org/JTable/publish
* @since 11.1
*/
public function publish($pks = null, $state = 1, $userId = 0)
{
$k = $this->_tbl_keys;
if (!is_null($pks))
{
foreach ($pks AS $key => $pk)
{
if (!is_array($pk))
{
$pks[$key] = array($this->_tbl_key => $pk);
}
}
}
$userId = (int) $userId;
$state = (int) $state;
// If there are no primary keys set check to see if the instance key is set.
if (empty($pks))
{
$pk = array();
foreach ($this->_tbl_keys AS $key)
{
if ($this->$key)
{
$pk[$this->$key] = $this->$key;
}
// We don't have a full primary key - return false
else
{
return false;
}
}
$pks = array($pk);
}
foreach ($pks AS $pk)
{
// Update the publishing state for rows with the given primary keys.
$query = $this->_db->getQuery(true)
->update($this->_tbl)
->set('published = ' . (int) $state);
// Determine if there is checkin support for the table.
if (property_exists($this, 'checked_out') || property_exists($this, 'checked_out_time'))
{
$query->where('(checked_out = 0 OR checked_out = ' . (int) $userId . ')');
$checkin = true;
}
else
{
$checkin = false;
}
// Build the WHERE clause for the primary keys.
$this->appendPrimaryKeys($query, $pk);
$this->_db->setQuery($query);
$this->_db->execute();
// If checkin is supported and all rows were adjusted, check them in.
if ($checkin && (count($pks) == $this->_db->getAffectedRows()))
{
$this->checkin($pk);
}
$ours = true;
foreach ($this->_tbl_keys AS $key)
{
if ($this->$key != $pk[$key])
{
$ours = false;
}
}
if ($ours)
{
$this->published = $state;
}
}
$this->setError('');
return true;
}
/**
* Method to lock the database table for writing.
*
* @return boolean True on success.
*
* @since 11.1
* @throws RuntimeException
*/
protected function _lock()
{
$this->_db->lockTable($this->_tbl);
$this->_locked = true;
return true;
}
/**
* Method to unlock the database table for writing.
*
* @return boolean True on success.
*
* @since 11.1
*/
protected function _unlock()
{
$this->_db->unlockTables();
$this->_locked = false;
return true;
}
}

Documentation generated on Tue, 19 Nov 2013 15:14:51 +0100 by phpDocumentor 1.4.3

Source for file table.php