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<?php
/**
* Part of the Joomla Framework Database Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Database;
use Joomla\Database\Exception\QueryTypeAlreadyDefinedException;
use Joomla\Database\Exception\UnknownTypeException;
/**
* Joomla Framework Query Building Class.
*
* @since 1.0
*
* @property-read array $bounded Holds key / value pair of bound objects.
* @property-read array $parameterMapping Mapping array for parameter types.
* @property-read DatabaseInterface $db The database driver.
* @property-read string $sql The SQL query (if a direct query string was provided).
* @property-read string $type The query type.
* @property-read string|null $alias The query alias.
* @property-read Query\QueryElement $element The query element for a generic query (type = null).
* @property-read Query\QueryElement $select The select element.
* @property-read Query\QueryElement $delete The delete element.
* @property-read Query\QueryElement $update The update element.
* @property-read Query\QueryElement $insert The insert element.
* @property-read Query\QueryElement $from The from element.
* @property-read Query\QueryElement[]|null $join The join elements.
* @property-read Query\QueryElement $set The set element.
* @property-read Query\QueryElement $where The where element.
* @property-read Query\QueryElement $group The group element.
* @property-read Query\QueryElement $having The having element.
* @property-read Query\QueryElement $columns The column list for an INSERT statement.
* @property-read Query\QueryElement $values The values list for an INSERT statement.
* @property-read Query\QueryElement $order The order element.
* @property-read boolean $autoIncrementField The auto increment insert field element.
* @property-read Query\QueryElement $call The call element.
* @property-read Query\QueryElement $exec The exec element.
* @property-read Query\QueryElement[]|null $merge The list of query elements.
* @property-read DatabaseQuery|null $querySet The query object.
* @property-read array|null $selectRowNumber Details of window function.
* @property-read string[] $nullDatetimeList The list of zero or null representation of a datetime.
* @property-read integer|null $offset The offset for the result set.
* @property-read integer|null $limit The limit for the result set.
* @property-read integer $preparedIndex An internal index for the bindArray function for unique prepared parameters.
*/
abstract class DatabaseQuery implements QueryInterface
{
/**
* Holds key / value pair of bound objects.
*
* @var array
* @since 2.0.0
*/
protected $bounded = [];
/**
* Mapping array for parameter types.
*
* @var array
* @since 2.0.0
*/
protected $parameterMapping = [
ParameterType::BOOLEAN => ParameterType::BOOLEAN,
ParameterType::INTEGER => ParameterType::INTEGER,
ParameterType::LARGE_OBJECT => ParameterType::LARGE_OBJECT,
ParameterType::NULL => ParameterType::NULL,
ParameterType::STRING => ParameterType::STRING,
];
/**
* The database driver.
*
* @var DatabaseInterface
* @since 1.0
*/
protected $db;
/**
* The SQL query (if a direct query string was provided).
*
* @var string
* @since 1.0
*/
protected $sql;
/**
* The query type.
*
* @var string|null
* @since 1.0
*/
protected $type = '';
/**
* The query alias.
*
* @var string|null
* @since 2.0.0
*/
protected $alias = null;
/**
* The query element for a generic query (type = null).
*
* @var Query\QueryElement
* @since 1.0
*/
protected $element;
/**
* The select element.
*
* @var Query\QueryElement
* @since 1.0
*/
protected $select;
/**
* The delete element.
*
* @var Query\QueryElement
* @since 1.0
*/
protected $delete;
/**
* The update element.
*
* @var Query\QueryElement
* @since 1.0
*/
protected $update;
/**
* The insert element.
*
* @var Query\QueryElement
* @since 1.0
*/
protected $insert;
/**
* The from element.
*
* @var Query\QueryElement
* @since 1.0
*/
protected $from;
/**
* The join elements.
*
* @var Query\QueryElement[]
* @since 1.0
*/
protected $join;
/**
* The set element.
*
* @var Query\QueryElement
* @since 1.0
*/
protected $set;
/**
* The where element.
*
* @var Query\QueryElement
* @since 1.0
*/
protected $where;
/**
* The group by element.
*
* @var Query\QueryElement
* @since 1.0
*/
protected $group;
/**
* The having element.
*
* @var Query\QueryElement
* @since 1.0
*/
protected $having;
/**
* The column list for an INSERT statement.
*
* @var Query\QueryElement
* @since 1.0
*/
protected $columns;
/**
* The values list for an INSERT statement.
*
* @var Query\QueryElement
* @since 1.0
*/
protected $values;
/**
* The order element.
*
* @var Query\QueryElement
* @since 1.0
*/
protected $order;
/**
* The auto increment insert field element.
*
* @var boolean
* @since 1.0
*/
protected $autoIncrementField = false;
/**
* The call element.
*
* @var Query\QueryElement
* @since 1.0
*/
protected $call;
/**
* The exec element.
*
* @var Query\QueryElement
* @since 1.0
*/
protected $exec;
/**
* The list of query elements, which may include UNION, UNION ALL, EXCEPT and INTERSECT.
*
* @var Query\QueryElement[]
* @since 2.0.0
*/
protected $merge;
/**
* The query object.
*
* @var Query\DatabaseQuery
* @since 2.0.0
*/
protected $querySet;
/**
* Details of window function.
*
* @var array|null
* @since 2.0.0
*/
protected $selectRowNumber;
/**
* The list of zero or null representation of a datetime.
*
* @var string[]
* @since 2.0.0
*/
protected $nullDatetimeList = [];
/**
* The offset for the result set.
*
* @var integer|null
* @since 2.0.0
*/
protected $offset;
/**
* The limit for the result set.
*
* @var integer|null
* @since 2.0.0
*/
protected $limit;
/**
* An internal index for the bindArray function for unique prepared parameters.
*
* @var integer
* @since 2.0.0
*/
protected $preparedIndex = 0;
/**
* Class constructor.
*
* @param DatabaseInterface $db The database driver.
*
* @since 1.0
*/
public function __construct(DatabaseInterface $db = null)
{
$this->db = $db;
}
/**
* Magic function to convert the query to a string.
*
* @return string The completed query.
*
* @since 1.0
*/
public function __toString()
{
if ($this->sql)
{
return $this->processLimit($this->sql, $this->limit, $this->offset);
}
$query = '';
switch ($this->type)
{
case 'element':
$query .= (string) $this->element;
break;
case 'select':
$query .= (string) $this->select;
$query .= (string) $this->from;
if ($this->join)
{
// Special case for joins
foreach ($this->join as $join)
{
$query .= (string) $join;
}
}
if ($this->where)
{
$query .= (string) $this->where;
}
if ($this->selectRowNumber === null)
{
if ($this->group)
{
$query .= (string) $this->group;
}
if ($this->having)
{
$query .= (string) $this->having;
}
if ($this->merge)
{
// Special case for merge
foreach ($this->merge as $element)
{
$query .= (string) $element;
}
}
}
if ($this->order)
{
$query .= (string) $this->order;
}
break;
case 'querySet':
$query = $this->querySet;
if ($query->order || ($query->limit || $query->offset))
{
// If ORDER BY or LIMIT statement exist then parentheses is required for the first query
$query = "($query)";
}
if ($this->merge)
{
// Special case for merge
foreach ($this->merge as $element)
{
$query .= (string) $element;
}
}
if ($this->order)
{
$query .= (string) $this->order;
}
break;
case 'delete':
$query .= (string) $this->delete;
$query .= (string) $this->from;
if ($this->join)
{
// Special case for joins
foreach ($this->join as $join)
{
$query .= (string) $join;
}
}
if ($this->where)
{
$query .= (string) $this->where;
}
break;
case 'update':
$query .= (string) $this->update;
if ($this->join)
{
// Special case for joins
foreach ($this->join as $join)
{
$query .= (string) $join;
}
}
$query .= (string) $this->set;
if ($this->where)
{
$query .= (string) $this->where;
}
break;
case 'insert':
$query .= (string) $this->insert;
// Set method
if ($this->set)
{
$query .= (string) $this->set;
}
elseif ($this->values)
{
// Columns-Values method
if ($this->columns)
{
$query .= (string) $this->columns;
}
$elements = $this->values->getElements();
if (!($elements[0] instanceof $this))
{
$query .= ' VALUES ';
}
$query .= (string) $this->values;
}
break;
case 'call':
$query .= (string) $this->call;
break;
case 'exec':
$query .= (string) $this->exec;
break;
}
$query = $this->processLimit($query, $this->limit, $this->offset);
if ($this->type === 'select' && $this->alias !== null)
{
$query = '(' . $query . ') AS ' . $this->alias;
}
return $query;
}
/**
* Magic function to get protected variable value
*
* @param string $name The name of the variable.
*
* @return mixed
*
* @since 1.0
*/
public function __get($name)
{
if (property_exists($this, $name))
{
return $this->$name;
}
$trace = debug_backtrace();
trigger_error(
'Undefined property via __get(): ' . $name . ' in ' . $trace[0]['file'] . ' on line ' . $trace[0]['line'],
E_USER_NOTICE
);
}
/**
* Add a single column, or array of columns to the CALL clause of the query.
*
* Usage:
* $query->call('a.*')->call('b.id');
* $query->call(array('a.*', 'b.id'));
*
* @param mixed $columns A string or an array of field names.
*
* @return $this
*
* @since 1.0
* @throws QueryTypeAlreadyDefinedException if the query type has already been defined
*/
public function call($columns)
{
if ($this->type !== null && $this->type !== '' && $this->type !== 'call')
{
throw new QueryTypeAlreadyDefinedException(
\sprintf(
'Cannot set the query type to "call" as the query type is already set to "%s".'
. ' You should either call the `clear()` method to reset the type or create a new query object.',
$this->type
)
);
}
$this->type = 'call';
if ($this->call === null)
{
$this->call = new Query\QueryElement('CALL', $columns);
}
else
{
$this->call->append($columns);
}
return $this;
}
/**
* Casts a value to a char.
*
* Ensure that the value is properly quoted before passing to the method.
*
* Usage:
* $query->select($query->castAs('CHAR', 'a'));
*
* @param string $type The type of string to cast as.
* @param string $value The value to cast as a char.
* @param string $length Optionally specify the length of the field (if the type supports it otherwise
* ignored).
*
* @return string SQL statement to cast the value as a char type.
*
* @since 1.0
*/
public function castAs(string $type, string $value, ?string $length = null)
{
switch (strtoupper($type))
{
case 'CHAR':
return $value;
default:
throw new UnknownTypeException(
sprintf(
'Type %s was not recognised by the database driver as valid for casting',
$type
)
);
}
}
/**
* Casts a value to a char.
*
* Ensure that the value is properly quoted before passing to the method.
*
* Usage:
* $query->select($query->castAsChar('a'));
*
* @param string $value The value to cast as a char.
*
* @return string SQL statement to cast the value as a char type.
*
* @since 1.0
* @deprecated 3.0 Use $query->castAs('CHAR', $value)
*/
public function castAsChar($value)
{
return $this->castAs('CHAR', $value);
}
/**
* Gets the number of characters in a string.
*
* Note, use 'length' to find the number of bytes in a string.
*
* Usage:
* $query->select($query->charLength('a'));
*
* @param string $field A value.
* @param string|null $operator Comparison operator between charLength integer value and $condition
* @param string|null $condition Integer value to compare charLength with.
*
* @return string The required char length call.
*
* @since 1.0
*/
public function charLength($field, $operator = null, $condition = null)
{
$statement = 'CHAR_LENGTH(' . $field . ')';
if ($operator !== null && $condition !== null)
{
$statement .= ' ' . $operator . ' ' . $condition;
}
return $statement;
}
/**
* Clear data from the query or a specific clause of the query.
*
* @param string $clause Optionally, the name of the clause to clear, or nothing to clear the whole query.
*
* @return $this
*
* @since 1.0
*/
public function clear($clause = null)
{
$this->sql = null;
switch ($clause)
{
case 'alias':
$this->alias = null;
break;
case 'select':
$this->select = null;
$this->type = null;
$this->selectRowNumber = null;
break;
case 'delete':
$this->delete = null;
$this->type = null;
break;
case 'update':
$this->update = null;
$this->type = null;
break;
case 'insert':
$this->insert = null;
$this->type = null;
$this->autoIncrementField = null;
break;
case 'querySet':
$this->querySet = null;
$this->type = null;
break;
case 'from':
$this->from = null;
break;
case 'join':
$this->join = null;
break;
case 'set':
$this->set = null;
break;
case 'where':
$this->where = null;
break;
case 'group':
$this->group = null;
break;
case 'having':
$this->having = null;
break;
case 'merge':
$this->merge = null;
break;
case 'order':
$this->order = null;
break;
case 'columns':
$this->columns = null;
break;
case 'values':
$this->values = null;
break;
case 'exec':
$this->exec = null;
$this->type = null;
break;
case 'call':
$this->call = null;
$this->type = null;
break;
case 'limit':
$this->offset = 0;
$this->limit = 0;
break;
case 'offset':
$this->offset = 0;
break;
case 'bounded':
$this->bounded = [];
break;
default:
$this->type = null;
$this->alias = null;
$this->bounded = [];
$this->select = null;
$this->selectRowNumber = null;
$this->delete = null;
$this->update = null;
$this->insert = null;
$this->querySet = null;
$this->from = null;
$this->join = null;
$this->set = null;
$this->where = null;
$this->group = null;
$this->having = null;
$this->merge = null;
$this->order = null;
$this->columns = null;
$this->values = null;
$this->autoIncrementField = null;
$this->exec = null;
$this->call = null;
$this->offset = 0;
$this->limit = 0;
break;
}
return $this;
}
/**
* Adds a column, or array of column names that would be used for an INSERT INTO statement.
*
* @param array|string $columns A column name, or array of column names.
*
* @return $this
*
* @since 1.0
*/
public function columns($columns)
{
if ($this->columns === null)
{
$this->columns = new Query\QueryElement('()', $columns);
}
else
{
$this->columns->append($columns);
}
return $this;
}
/**
* Concatenates an array of column names or values.
*
* Usage:
* $query->select($query->concatenate(array('a', 'b')));
*
* @param string[] $values An array of values to concatenate.
* @param string|null $separator As separator to place between each value.
*
* @return string The concatenated values.
*
* @since 1.0
*/
public function concatenate($values, $separator = null)
{
if ($separator !== null)
{
return 'CONCATENATE(' . implode(' || ' . $this->quote($separator) . ' || ', $values) . ')';
}
return 'CONCATENATE(' . implode(' || ', $values) . ')';
}
/**
* Gets the current date and time.
*
* Usage:
* $query->where('published_up < '.$query->currentTimestamp());
*
* @return string
*
* @since 1.0
*/
public function currentTimestamp()
{
return 'CURRENT_TIMESTAMP()';
}
/**
* Add to the current date and time.
*
* Usage:
* $query->select($query->dateAdd());
*
* Prefixing the interval with a - (negative sign) will cause subtraction to be used.
* Note: Not all drivers support all units.
*
* @param string $date The db quoted string representation of the date to add to. May be date or datetime
* @param string $interval The string representation of the appropriate number of units
* @param string $datePart The part of the date to perform the addition on
*
* @return string The string with the appropriate sql for addition of dates
*
* @link https://dev.mysql.com/doc/en/date-and-time-functions.html
* @since 1.5.0
*/
public function dateAdd($date, $interval, $datePart)
{
return 'DATE_ADD(' . $date . ', INTERVAL ' . $interval . ' ' . $datePart . ')';
}
/**
* Returns a PHP date() function compliant date format for the database driver.
*
* This method is provided for use where the query object is passed to a function for modification.
* If you have direct access to the database object, it is recommended you use the getDateFormat method directly.
*
* @return string The format string.
*
* @since 1.0
* @throws \RuntimeException
*/
public function dateFormat()
{
if (!($this->db instanceof DatabaseInterface))
{
throw new \RuntimeException(sprintf('A %s instance is not set to the query object.', DatabaseInterface::class));
}
return $this->db->getDateFormat();
}
/**
* Creates a HTML formatted dump of the query for debugging purposes.
*
* Usage:
* echo $query->dump();
*
* @return string
*
* @since 1.0
* @deprecated 3.0 Deprecated without replacement
*/
public function dump()
{
trigger_deprecation(
'joomla/database',
'2.0.0',
'%s() is deprecated and will be removed in 3.0.',
__METHOD__
);
return '<pre class="jdatabasequery">' . str_replace('#__', $this->db->getPrefix(), $this) . '</pre>';
}
/**
* Add a table name to the DELETE clause of the query.
*
* Usage:
* $query->delete('#__a')->where('id = 1');
*
* @param string $table The name of the table to delete from.
*
* @return $this
*
* @since 1.0
* @throws QueryTypeAlreadyDefinedException if the query type has already been defined
*/
public function delete($table = null)
{
if ($this->type !== null && $this->type !== '' && $this->type !== 'delete')
{
throw new QueryTypeAlreadyDefinedException(
\sprintf(
'Cannot set the query type to "delete" as the query type is already set to "%s".'
. ' You should either call the `clear()` method to reset the type or create a new query object.',
$this->type
)
);
}
$this->type = 'delete';
$this->delete = new Query\QueryElement('DELETE', null);
if (!empty($table))
{
$this->from($table);
}
return $this;
}
/**
* Alias for escape method
*
* @param string $text The string to be escaped.
* @param boolean $extra Optional parameter to provide extra escaping.
*
* @return string The escaped string.
*
* @since 1.0
* @throws \RuntimeException if the internal db property is not a valid object.
*/
public function e($text, $extra = false)
{
return $this->escape($text, $extra);
}
/**
* Method to escape a string for usage in an SQL statement.
*
* This method is provided for use where the query object is passed to a function for modification.
* If you have direct access to the database object, it is recommended you use the escape method directly.
*
* Note that 'e' is an alias for this method as it is in DatabaseDriver.
*
* @param string $text The string to be escaped.
* @param boolean $extra Optional parameter to provide extra escaping.
*
* @return string The escaped string.
*
* @since 1.0
* @throws \RuntimeException if the internal db property is not a valid object.
*/
public function escape($text, $extra = false)
{
if (!($this->db instanceof DatabaseInterface))
{
throw new \RuntimeException(sprintf('A %s instance is not set to the query object.', DatabaseInterface::class));
}
return $this->db->escape($text, $extra);
}
/**
* Add a single column, or array of columns to the EXEC clause of the query.
*
* Usage:
* $query->exec('a.*')->exec('b.id');
* $query->exec(array('a.*', 'b.id'));
*
* @param array|string $columns A string or an array of field names.
*
* @return $this
*
* @since 1.0
* @throws QueryTypeAlreadyDefinedException if the query type has already been defined
*/
public function exec($columns)
{
if ($this->type !== null && $this->type !== '' && $this->type !== 'exec')
{
throw new QueryTypeAlreadyDefinedException(
\sprintf(
'Cannot set the query type to "exec" as the query type is already set to "%s".'
. ' You should either call the `clear()` method to reset the type or create a new query object.',
$this->type
)
);
}
$this->type = 'exec';
if ($this->exec === null)
{
$this->exec = new Query\QueryElement('EXEC', $columns);
}
else
{
$this->exec->append($columns);
}
return $this;
}
/**
* Find a value in a varchar used like a set.
*
* Ensure that the value is an integer before passing to the method.
*
* Usage:
* $query->findInSet((int) $parent->id, 'a.assigned_cat_ids')
*
* @param string $value The value to search for.
* @param string $set The set of values.
*
* @return string A representation of the MySQL find_in_set() function for the driver.
*
* @since 1.5.0
*/
public function findInSet($value, $set)
{
return '';
}
/**
* Add a table to the FROM clause of the query.
*
* Usage:
* $query->select('*')->from('#__a');
* $query->select('*')->from($subquery->alias('a'));
*
* @param string|DatabaseQuery $table The name of the table or a DatabaseQuery object (or a child of it) with alias set.
*
* @return $this
*
* @since 1.0
* @throws \RuntimeException
*/
public function from($table)
{
if ($table instanceof $this && $table->alias === null)
{
throw new \RuntimeException('JLIB_DATABASE_ERROR_NULL_SUBQUERY_ALIAS');
}
if ($this->from === null)
{
$this->from = new Query\QueryElement('FROM', $table);
}
else
{
$this->from->append($table);
}
return $this;
}
/**
* Add alias for current query.
*
* Usage:
* $query->select('*')->from('#__a')->alias('subquery');
*
* @param string $alias Alias used for a JDatabaseQuery.
*
* @return $this
*
* @since 2.0.0
*/
public function alias($alias)
{
$this->alias = $alias;
return $this;
}
/**
* Used to get a string to extract year from date column.
*
* Usage:
* $query->select($query->year($query->quoteName('dateColumn')));
*
* @param string $date Date column containing year to be extracted.
*
* @return string Returns string to extract year from a date.
*
* @since 1.0
*/
public function year($date)
{
return 'YEAR(' . $date . ')';
}
/**
* Used to get a string to extract month from date column.
*
* Usage:
* $query->select($query->month($query->quoteName('dateColumn')));
*
* @param string $date Date column containing month to be extracted.
*
* @return string Returns string to extract month from a date.
*
* @since 1.0
*/
public function month($date)
{
return 'MONTH(' . $date . ')';
}
/**
* Used to get a string to extract day from date column.
*
* Usage:
* $query->select($query->day($query->quoteName('dateColumn')));
*
* @param string $date Date column containing day to be extracted.
*
* @return string Returns string to extract day from a date.
*
* @since 1.0
*/
public function day($date)
{
return 'DAY(' . $date . ')';
}
/**
* Used to get a string to extract hour from date column.
*
* Usage:
* $query->select($query->hour($query->quoteName('dateColumn')));
*
* @param string $date Date column containing hour to be extracted.
*
* @return string Returns string to extract hour from a date.
*
* @since 1.0
*/
public function hour($date)
{
return 'HOUR(' . $date . ')';
}
/**
* Used to get a string to extract minute from date column.
*
* Usage:
* $query->select($query->minute($query->quoteName('dateColumn')));
*
* @param string $date Date column containing minute to be extracted.
*
* @return string Returns string to extract minute from a date.
*
* @since 1.0
*/
public function minute($date)
{
return 'MINUTE(' . $date . ')';
}
/**
* Used to get a string to extract seconds from date column.
*
* Usage:
* $query->select($query->second($query->quoteName('dateColumn')));
*
* @param string $date Date column containing second to be extracted.
*
* @return string Returns string to extract second from a date.
*
* @since 1.0
*/
public function second($date)
{
return 'SECOND(' . $date . ')';
}
/**
* Add a grouping column to the GROUP clause of the query.
*
* Usage:
* $query->group('id');
*
* @param array|string $columns A string or array of ordering columns.
*
* @return $this
*
* @since 1.0
*/
public function group($columns)
{
if ($this->group === null)
{
$this->group = new Query\QueryElement('GROUP BY', $columns);
}
else
{
$this->group->append($columns);
}
return $this;
}
/**
* A conditions to the HAVING clause of the query.
*
* Usage:
* $query->group('id')->having('COUNT(id) > 5');
*
* @param array|string $conditions A string or array of columns.
* @param string $glue The glue by which to join the conditions. Defaults to AND.
*
* @return $this
*
* @since 1.0
*/
public function having($conditions, $glue = 'AND')
{
if ($this->having === null)
{
$glue = strtoupper($glue);
$this->having = new Query\QueryElement('HAVING', $conditions, " $glue ");
}
else
{
$this->having->append($conditions);
}
return $this;
}
/**
* Add a table name to the INSERT clause of the query.
*
* Usage:
* $query->insert('#__a')->set('id = 1');
* $query->insert('#__a')->columns('id, title')->values('1,2')->values('3,4');
* $query->insert('#__a')->columns('id, title')->values(array('1,2', '3,4'));
*
* @param string $table The name of the table to insert data into.
* @param boolean $incrementField The name of the field to auto increment.
*
* @return $this
*
* @since 1.0
* @throws QueryTypeAlreadyDefinedException if the query type has already been defined
*/
public function insert($table, $incrementField = false)
{
if ($this->type !== null && $this->type !== '' && $this->type !== 'insert')
{
throw new QueryTypeAlreadyDefinedException(
\sprintf(
'Cannot set the query type to "insert" as the query type is already set to "%s".'
. ' You should either call the `clear()` method to reset the type or create a new query object.',
$this->type
)
);
}
$this->type = 'insert';
$this->insert = new Query\QueryElement('INSERT INTO', $table);
$this->autoIncrementField = $incrementField;
return $this;
}
/**
* Add a JOIN clause to the query.
*
* Usage:
* $query->join('INNER', 'b', 'b.id = a.id);
*
* @param string $type The type of join. This string is prepended to the JOIN keyword.
* @param string $table The name of table.
* @param string $condition The join condition.
*
* @return $this
*
* @since 1.0
*/
public function join($type, $table, $condition = null)
{
$type = strtoupper($type) . ' JOIN';
if ($condition !== null)
{
$this->join[] = new Query\QueryElement($type, [$table, $condition], ' ON ');
}
else
{
$this->join[] = new Query\QueryElement($type, $table);
}
return $this;
}
/**
* Add an INNER JOIN clause to the query.
*
* Usage:
* $query->innerJoin('b', 'b.id = a.id')->innerJoin('c', 'c.id = b.id');
*
* @param string $table The name of table.
* @param string $condition The join condition.
*
* @return $this
*
* @since 1.0
*/
public function innerJoin($table, $condition = null)
{
return $this->join('INNER', $table, $condition);
}
/**
* Add an OUTER JOIN clause to the query.
*
* Usage:
* $query->outerJoin('b', 'b.id = a.id')->leftJoin('c', 'c.id = b.id');
*
* @param string $table The name of table.
* @param string $condition The join condition.
*
* @return $this
*
* @since 1.0
*/
public function outerJoin($table, $condition = null)
{
return $this->join('OUTER', $table, $condition);
}
/**
* Add a LEFT JOIN clause to the query.
*
* Usage:
* $query->leftJoin('b', 'b.id = a.id')->leftJoin('c', 'c.id = b.id');
*
* @param string $table The name of table.
* @param string $condition The join condition.
*
* @return $this
*
* @since 1.0
*/
public function leftJoin($table, $condition = null)
{
return $this->join('LEFT', $table, $condition);
}
/**
* Add a RIGHT JOIN clause to the query.
*
* Usage:
* $query->rightJoin('b', 'b.id = a.id')->rightJoin('c', 'c.id = b.id');
*
* @param string $table The name of table.
* @param string $condition The join condition.
*
* @return $this
*
* @since 1.0
*/
public function rightJoin($table, $condition = null)
{
return $this->join('RIGHT', $table, $condition);
}
/**
* Get the length of a string in bytes.
*
* Note, use 'charLength' to find the number of characters in a string.
*
* Usage:
* query->where($query->length('a').' > 3');
*
* @param string $value The string to measure.
*
* @return integer
*
* @since 1.0
*/
public function length($value)
{
return 'LENGTH(' . $value . ')';
}
/**
* Get the null or zero representation of a timestamp for the database driver.
*
* This method is provided for use where the query object is passed to a function for modification.
* If you have direct access to the database object, it is recommended you use the nullDate method directly.
*
* Usage:
* $query->where('modified_date <> '.$query->nullDate());
*
* @param boolean $quoted Optionally wraps the null date in database quotes (true by default).
*
* @return string Null or zero representation of a timestamp.
*
* @since 1.0
* @throws \RuntimeException
*/
public function nullDate($quoted = true)
{
if (!($this->db instanceof DatabaseInterface))
{
throw new \RuntimeException(sprintf('A %s instance is not set to the query object.', DatabaseInterface::class));
}
$result = $this->db->getNullDate();
if ($quoted)
{
return $this->db->quote($result);
}
return $result;
}
/**
* Generate a SQL statement to check if column represents a zero or null datetime.
*
* Usage:
* $query->where($query->isNullDatetime('modified_date'));
*
* @param string $column A column name.
*
* @return string
*
* @since 2.0.0
*/
public function isNullDatetime($column)
{
if (!$this->db instanceof DatabaseInterface)
{
throw new \RuntimeException(sprintf('A %s instance is not set to the query object.', DatabaseInterface::class));
}
if ($this->nullDatetimeList)
{
return "($column IN ("
. implode(', ', $this->db->quote($this->nullDatetimeList))
. ") OR $column IS NULL)";
}
return "$column IS NULL";
}
/**
* Add a ordering column to the ORDER clause of the query.
*
* Usage:
* $query->order('foo')->order('bar');
* $query->order(array('foo','bar'));
*
* @param array|string $columns A string or array of ordering columns.
*
* @return $this
*
* @since 1.0
*/
public function order($columns)
{
if ($this->order === null)
{
$this->order = new Query\QueryElement('ORDER BY', $columns);
}
else
{
$this->order->append($columns);
}
return $this;
}
/**
* Alias for quote method
*
* @param array|string $text A string or an array of strings to quote.
* @param boolean $escape True (default) to escape the string, false to leave it unchanged.
*
* @return string The quoted input string.
*
* @since 1.0
* @throws \RuntimeException if the internal db property is not a valid object.
*/
public function q($text, $escape = true)
{
return $this->quote($text, $escape);
}
/**
* Method to quote and optionally escape a string to database requirements for insertion into the database.
*
* This method is provided for use where the query object is passed to a function for modification.
* If you have direct access to the database object, it is recommended you use the quote method directly.
*
* Note that 'q' is an alias for this method as it is in DatabaseDriver.
*
* Usage:
* $query->quote('fulltext');
* $query->q('fulltext');
* $query->q(array('option', 'fulltext'));
*
* @param array|string $text A string or an array of strings to quote.
* @param boolean $escape True (default) to escape the string, false to leave it unchanged.
*
* @return string The quoted input string.
*
* @since 1.0
* @throws \RuntimeException if the internal db property is not a valid object.
*/
public function quote($text, $escape = true)
{
if (!($this->db instanceof DatabaseInterface))
{
throw new \RuntimeException(sprintf('A %s instance is not set to the query object.', DatabaseInterface::class));
}
return $this->db->quote($text, $escape);
}
/**
* Alias for quoteName method
*
* @param array|string $name The identifier name to wrap in quotes, or an array of identifier names to wrap in quotes.
* Each type supports dot-notation name.
* @param array|string $as The AS query part associated to $name. It can be string or array, in latter case it has to be
* same length of $name; if is null there will not be any AS part for string or array element.
*
* @return array|string The quote wrapped name, same type of $name.
*
* @since 1.0
* @throws \RuntimeException if the internal db property is not a valid object.
*/
public function qn($name, $as = null)
{
return $this->quoteName($name, $as);
}
/**
* Wrap an SQL statement identifier name such as column, table or database names in quotes to prevent injection
* risks and reserved word conflicts.
*
* This method is provided for use where the query object is passed to a function for modification.
* If you have direct access to the database object, it is recommended you use the quoteName method directly.
*
* Note that 'qn' is an alias for this method as it is in DatabaseDriver.
*
* Usage:
* $query->quoteName('#__a');
* $query->qn('#__a');
*
* @param array|string $name The identifier name to wrap in quotes, or an array of identifier names to wrap in quotes.
* Each type supports dot-notation name.
* @param array|string $as The AS query part associated to $name. It can be string or array, in latter case it has to be
* same length of $name; if is null there will not be any AS part for string or array element.
*
* @return array|string The quote wrapped name, same type of $name.
*
* @since 1.0
* @throws \RuntimeException if the internal db property is not a valid object.
*/
public function quoteName($name, $as = null)
{
if (!($this->db instanceof DatabaseInterface))
{
throw new \RuntimeException(sprintf('A %s instance is not set to the query object.', DatabaseInterface::class));
}
return $this->db->quoteName($name, $as);
}
/**
* Get the function to return a random floating-point value
*
* Usage:
* $query->rand();
*
* @return string
*
* @since 1.5.0
*/
public function rand()
{
return '';
}
/**
* Get the regular expression operator
*
* Usage:
* $query->where('field ' . $query->regexp($search));
*
* @param string $value The regex pattern.
*
* @return string
*
* @since 1.5.0
*/
public function regexp($value)
{
return ' ' . $value;
}
/**
* Add a single column, or array of columns to the SELECT clause of the query.
*
* Note that you must not mix insert, update, delete and select method calls when building a query.
* The select method can, however, be called multiple times in the same query.
*
* Usage:
* $query->select('a.*')->select('b.id');
* $query->select(array('a.*', 'b.id'));
*
* @param array|string $columns A string or an array of field names.
*
* @return $this
*
* @since 1.0
* @throws QueryTypeAlreadyDefinedException if the query type has already been defined
*/
public function select($columns)
{
if ($this->type !== null && $this->type !== '' && $this->type !== 'select')
{
throw new QueryTypeAlreadyDefinedException(
\sprintf(
'Cannot set the query type to "select" as the query type is already set to "%s".'
. ' You should either call the `clear()` method to reset the type or create a new query object.',
$this->type
)
);
}
$this->type = 'select';
if ($this->select === null)
{
$this->select = new Query\QueryElement('SELECT', $columns);
}
else
{
$this->select->append($columns);
}
return $this;
}
/**
* Add a single condition string, or an array of strings to the SET clause of the query.
*
* Usage:
* $query->set('a = 1')->set('b = 2');
* $query->set(array('a = 1', 'b = 2');
*
* @param array|string $conditions A string or array of string conditions.
* @param string $glue The glue by which to join the condition strings. Defaults to ,.
* Note that the glue is set on first use and cannot be changed.
*
* @return $this
*
* @since 1.0
*/
public function set($conditions, $glue = ',')
{
if ($this->set === null)
{
$glue = strtoupper($glue);
$this->set = new Query\QueryElement('SET', $conditions, \PHP_EOL . "\t$glue ");
}
else
{
$this->set->append($conditions);
}
return $this;
}
/**
* Sets the offset and limit for the result set, if the database driver supports it.
*
* Usage:
* $query->setLimit(100, 0); (retrieve 100 rows, starting at first record)
* $query->setLimit(50, 50); (retrieve 50 rows, starting at 50th record)
*
* @param integer $limit The limit for the result set
* @param integer $offset The offset for the result set
*
* @return $this
*
* @since 2.0.0
*/
public function setLimit($limit = 0, $offset = 0)
{
$this->limit = (int) $limit;
$this->offset = (int) $offset;
return $this;
}
/**
* Allows a direct query to be provided to the database driver's setQuery() method, but still allow queries
* to have bounded variables.
*
* Usage:
* $query->setQuery('select * from #__users');
*
* @param DatabaseQuery|string $sql A SQL query string or DatabaseQuery object
*
* @return $this
*
* @since 1.0
*/
public function setQuery($sql)
{
$this->sql = $sql;
return $this;
}
/**
* Add a table name to the UPDATE clause of the query.
*
* Usage:
* $query->update('#__foo')->set(...);
*
* @param string $table A table to update.
*
* @return $this
*
* @since 1.0
* @throws QueryTypeAlreadyDefinedException if the query type has already been defined
*/
public function update($table)
{
if ($this->type !== null && $this->type !== '' && $this->type !== 'update')
{
throw new QueryTypeAlreadyDefinedException(
\sprintf(
'Cannot set the query type to "update" as the query type is already set to "%s".'
. ' You should either call the `clear()` method to reset the type or create a new query object.',
$this->type
)
);
}
$this->type = 'update';
$this->update = new Query\QueryElement('UPDATE', $table);
return $this;
}
/**
* Adds a tuple, or array of tuples that would be used as values for an INSERT INTO statement.
*
* Usage:
* $query->values('1,2,3')->values('4,5,6');
* $query->values(array('1,2,3', '4,5,6'));
*
* @param array|string $values A single tuple, or array of tuples.
*
* @return $this
*
* @since 1.0
*/
public function values($values)
{
if ($this->values === null)
{
$this->values = new Query\QueryElement('()', $values, '),(');
}
else
{
$this->values->append($values);
}
return $this;
}
/**
* Add a single condition, or an array of conditions to the WHERE clause of the query.
*
* Usage:
* $query->where('a = 1')->where('b = 2');
* $query->where(array('a = 1', 'b = 2'));
*
* @param array|string $conditions A string or array of where conditions.
* @param string $glue The glue by which to join the conditions. Defaults to AND.
* Note that the glue is set on first use and cannot be changed.
*
* @return $this
*
* @since 1.0
*/
public function where($conditions, $glue = 'AND')
{
if ($this->where === null)
{
$glue = strtoupper($glue);
$this->where = new Query\QueryElement('WHERE', $conditions, " $glue ");
}
else
{
$this->where->append($conditions);
}
return $this;
}
/**
* Add a WHERE IN statement to the query.
*
* Note that all values must be the same data type.
*
* Usage
* $query->whereIn('id', [1, 2, 3]);
*
* @param string $keyName Key name for the where clause
* @param array $keyValues Array of values to be matched
* @param array|string $dataType Constant corresponding to a SQL datatype. It can be an array, in this case it
* has to be same length of $keyValues
*
* @return $this
*
* @since 2.0.0
*/
public function whereIn(string $keyName, array $keyValues, $dataType = ParameterType::INTEGER)
{
return $this->where(
$keyName . ' IN (' . implode(',', $this->bindArray($keyValues, $dataType)) . ')'
);
}
/**
* Add a WHERE NOT IN statement to the query.
*
* Note that all values must be the same data type.
*
* Usage
* $query->whereNotIn('id', [1, 2, 3]);
*
* @param string $keyName Key name for the where clause
* @param array $keyValues Array of values to be matched
* @param array|string $dataType Constant corresponding to a SQL datatype. It can be an array, in this case it
* has to be same length of $keyValues
*
* @return $this
*
* @since 2.0.0
*/
public function whereNotIn(string $keyName, array $keyValues, $dataType = ParameterType::INTEGER)
{
return $this->where(
$keyName . ' NOT IN (' . implode(',', $this->bindArray($keyValues, $dataType)) . ')'
);
}
/**
* Extend the WHERE clause with a single condition or an array of conditions, with a potentially
* different logical operator from the one in the current WHERE clause.
*
* Usage:
* $query->where(array('a = 1', 'b = 2'))->extendWhere('XOR', array('c = 3', 'd = 4'));
* will produce: WHERE ((a = 1 AND b = 2) XOR (c = 3 AND d = 4)
*
* @param string $outerGlue The glue by which to join the conditions to the current WHERE conditions.
* @param mixed $conditions A string or array of WHERE conditions.
* @param string $innerGlue The glue by which to join the conditions. Defaults to AND.
*
* @return $this
*
* @since 1.3.0
*/
public function extendWhere($outerGlue, $conditions, $innerGlue = 'AND')
{
// Replace the current WHERE with a new one which has the old one as an unnamed child.
$this->where = new Query\QueryElement('WHERE', $this->where->setName('()'), " $outerGlue ");
// Append the new conditions as a new unnamed child.
$this->where->append(new Query\QueryElement('()', $conditions, " $innerGlue "));
return $this;
}
/**
* Extend the WHERE clause with an OR and a single condition or an array of conditions.
*
* Usage:
* $query->where(array('a = 1', 'b = 2'))->orWhere(array('c = 3', 'd = 4'));
* will produce: WHERE ((a = 1 AND b = 2) OR (c = 3 AND d = 4)
*
* @param mixed $conditions A string or array of WHERE conditions.
* @param string $glue The glue by which to join the conditions. Defaults to AND.
*
* @return $this
*
* @since 1.3.0
*/
public function orWhere($conditions, $glue = 'AND')
{
return $this->extendWhere('OR', $conditions, $glue);
}
/**
* Extend the WHERE clause with an AND and a single condition or an array of conditions.
*
* Usage:
* $query->where(array('a = 1', 'b = 2'))->andWhere(array('c = 3', 'd = 4'));
* will produce: WHERE ((a = 1 AND b = 2) AND (c = 3 OR d = 4)
*
* @param mixed $conditions A string or array of WHERE conditions.
* @param string $glue The glue by which to join the conditions. Defaults to OR.
*
* @return $this
*
* @since 1.3.0
*/
public function andWhere($conditions, $glue = 'OR')
{
return $this->extendWhere('AND', $conditions, $glue);
}
/**
* Method to add a variable to an internal array that will be bound to a prepared SQL statement before query execution.
*
* @param array|string|integer $key The key that will be used in your SQL query to reference the value. Usually of
* the form ':key', but can also be an integer.
* @param mixed $value The value that will be bound. It can be an array, in this case it has to be
* same length of $key; The value is passed by reference to support output
* parameters such as those possible with stored procedures.
* @param array|string $dataType Constant corresponding to a SQL datatype. It can be an array, in this case it
* has to be same length of $key
* @param integer $length The length of the variable. Usually required for OUTPUT parameters.
* @param array $driverOptions Optional driver options to be used.
*
* @return $this
*
* @since 1.5.0
* @throws \InvalidArgumentException
*/
public function bind($key, &$value, $dataType = ParameterType::STRING, $length = 0, $driverOptions = [])
{
if (!$key)
{
throw new \InvalidArgumentException('A key is required');
}
$key = (array) $key;
$count = \count($key);
if (\is_array($value) && $count != \count($value))
{
throw new \InvalidArgumentException('Array length of $key and $value are not equal');
}
if (\is_array($dataType) && $count != \count($dataType))
{
throw new \InvalidArgumentException('Array length of $key and $dataType are not equal');
}
for ($i = 0; $i < $count; $i++)
{
if (\is_array($value))
{
$localValue = &$value[$i];
}
else
{
$localValue = &$value;
}
if (\is_array($dataType))
{
$localDataType = $dataType[$i];
}
else
{
$localDataType = $dataType;
}
// Validate parameter type
if (!isset($this->parameterMapping[$localDataType]))
{
throw new \InvalidArgumentException(sprintf('Unsupported parameter type `%s`', $localDataType));
}
$obj = new \stdClass;
$obj->value = &$localValue;
$obj->dataType = $this->parameterMapping[$localDataType];
$obj->length = $length;
$obj->driverOptions = $driverOptions;
// Add the Key/Value into the bounded array
$this->bounded[$key[$i]] = $obj;
unset($localValue);
}
return $this;
}
/**
* Method to unbind a bound variable.
*
* @param array|string|integer $key The key or array of keys to unbind.
*
* @return $this
*
* @since 2.0.0
*/
public function unbind($key)
{
if (\is_array($key))
{
foreach ($key as $k)
{
unset($this->bounded[$k]);
}
}
else
{
unset($this->bounded[$key]);
}
return $this;
}
/**
* Binds an array of values and returns an array of prepared parameter names.
*
* Note that all values must be the same data type.
*
* Usage:
* $query->where('column in (' . implode(',', $query->bindArray($keyValues, $dataType)) . ')');
*
* @param array $values Values to bind
* @param array|string $dataType Constant corresponding to a SQL datatype. It can be an array, in this case it
* has to be same length of $key
*
* @return array An array with parameter names
*
* @since 2.0.0
*/
public function bindArray(array $values, $dataType = ParameterType::INTEGER)
{
$parameterNames = [];
for ($i = 0; $i < count($values); $i++)
{
$parameterNames[] = ':preparedArray' . (++$this->preparedIndex);
}
$this->bind($parameterNames, $values, $dataType);
return $parameterNames;
}
/**
* Method to provide basic copy support.
*
* Any object pushed into the data of this class should have its own __clone() implementation.
* This method does not support copying objects in a multidimensional array.
*
* @return void
*
* @since 1.0
*/
public function __clone()
{
foreach ($this as $k => $v)
{
if ($k === 'db')
{
continue;
}
if (\is_object($v))
{
$this->{$k} = clone $v;
}
elseif (\is_array($v))
{
foreach ($v as $i => $element)
{
if (\is_object($element))
{
$this->{$k}[$i] = clone $element;
}
}
}
}
}
/**
* Retrieves the bound parameters array when key is null and returns it by reference. If a key is provided then that item is
* returned.
*
* @param mixed $key The bounded variable key to retrieve.
*
* @return mixed
*
* @since 1.5.0
*/
public function &getBounded($key = null)
{
if (empty($key))
{
return $this->bounded;
}
if (isset($this->bounded[$key]))
{
return $this->bounded[$key];
}
}
/**
* Combine a select statement to the current query by one of the set operators.
* Operators: UNION, UNION ALL, EXCEPT or INTERSECT.
*
* @param string $name The name of the set operator with parentheses.
* @param DatabaseQuery|string $query The DatabaseQuery object or string.
*
* @return $this
*
* @since 2.0.0
*/
protected function merge($name, $query)
{
$this->type = $this->type ?: 'select';
$this->merge[] = new Query\QueryElement($name, $query);
return $this;
}
/**
* Add a query to UNION with the current query.
*
* Usage:
* $query->union('SELECT name FROM #__foo')
* $query->union('SELECT name FROM #__foo', true)
*
* @param DatabaseQuery|string $query The DatabaseQuery object or string to union.
* @param boolean $distinct True to only return distinct rows from the union.
*
* @return $this
*
* @since 1.0
*/
public function union($query, $distinct = true)
{
// Set up the name with parentheses, the DISTINCT flag is redundant
return $this->merge($distinct ? 'UNION ()' : 'UNION ALL ()', $query);
}
/**
* Add a query to UNION ALL with the current query.
*
* Usage:
* $query->unionAll('SELECT name FROM #__foo')
*
* @param DatabaseQuery|string $query The DatabaseQuery object or string to union.
*
* @return $this
*
* @see union
* @since 1.5.0
*/
public function unionAll($query)
{
return $this->union($query, false);
}
/**
* Set a single query to the query set.
* On this type of DatabaseQuery you can use union(), unionAll(), order() and setLimit()
*
* Usage:
* $query->querySet($query2->select('name')->from('#__foo')->order('id DESC')->setLimit(1))
* ->unionAll($query3->select('name')->from('#__foo')->order('id')->setLimit(1))
* ->order('name')
* ->setLimit(1)
*
* @param DatabaseQuery $query The DatabaseQuery object or string.
*
* @return $this
*
* @since 2.0.0
*/
public function querySet($query)
{
$this->type = 'querySet';
$this->querySet = $query;
return $this;
}
/**
* Create a DatabaseQuery object of type querySet from current query.
*
* Usage:
* $query->select('name')->from('#__foo')->order('id DESC')->setLimit(1)
* ->toQuerySet()
* ->unionAll($query2->select('name')->from('#__foo')->order('id')->setLimit(1))
* ->order('name')
* ->setLimit(1)
*
* @return DatabaseQuery A new object of the DatabaseQuery.
*
* @since 2.0.0
*/
public function toQuerySet()
{
return (new static($this->db))->querySet($this);
}
/**
* Find and replace sprintf-like tokens in a format string.
* Each token takes one of the following forms:
* %% - A literal percent character.
* %[t] - Where [t] is a type specifier.
* %[n]$[x] - Where [n] is an argument specifier and [t] is a type specifier.
*
* Types:
* a - Numeric: Replacement text is coerced to a numeric type but not quoted or escaped.
* e - Escape: Replacement text is passed to $this->escape().
* E - Escape (extra): Replacement text is passed to $this->escape() with true as the second argument.
* n - Name Quote: Replacement text is passed to $this->quoteName().
* q - Quote: Replacement text is passed to $this->quote().
* Q - Quote (no escape): Replacement text is passed to $this->quote() with false as the second argument.
* r - Raw: Replacement text is used as-is. (Be careful)
*
* Date Types:
* - Replacement text automatically quoted (use uppercase for Name Quote).
* - Replacement text should be a string in date format or name of a date column.
* y/Y - Year
* m/M - Month
* d/D - Day
* h/H - Hour
* i/I - Minute
* s/S - Second
*
* Invariable Types:
* - Takes no argument.
* - Argument index not incremented.
* t - Replacement text is the result of $this->currentTimestamp().
* z - Replacement text is the result of $this->nullDate(false).
* Z - Replacement text is the result of $this->nullDate(true).
*
* Usage:
* $query->format('SELECT %1$n FROM %2$n WHERE %3$n = %4$a', 'foo', '#__foo', 'bar', 1);
* Returns: SELECT `foo` FROM `#__foo` WHERE `bar` = 1
*
* Notes:
* The argument specifier is optional but recommended for clarity.
* The argument index used for unspecified tokens is incremented only when used.
*
* @param string $format The formatting string.
*
* @return string Returns a string produced according to the formatting string.
*
* @since 1.0
*/
public function format($format)
{
$query = $this;
$args = \array_slice(\func_get_args(), 1);
array_unshift($args, null);
$i = 1;
$func = function ($match) use ($query, $args, &$i)
{
if (isset($match[6]) && $match[6] === '%')
{
return '%';
}
// No argument required, do not increment the argument index.
switch ($match[5])
{
case 't':
return $query->currentTimestamp();
case 'z':
return $query->nullDate(false);
case 'Z':
return $query->nullDate(true);
}
// Increment the argument index only if argument specifier not provided.
$index = is_numeric($match[4]) ? (int) $match[4] : $i++;
if (!$index || !isset($args[$index]))
{
// TODO - What to do? sprintf() throws a Warning in these cases.
$replacement = '';
}
else
{
$replacement = $args[$index];
}
switch ($match[5])
{
case 'a':
return 0 + $replacement;
case 'e':
return $query->escape($replacement);
case 'E':
return $query->escape($replacement, true);
case 'n':
return $query->quoteName($replacement);
case 'q':
return $query->quote($replacement);
case 'Q':
return $query->quote($replacement, false);
case 'r':
return $replacement;
// Dates
case 'y':
return $query->year($query->quote($replacement));
case 'Y':
return $query->year($query->quoteName($replacement));
case 'm':
return $query->month($query->quote($replacement));
case 'M':
return $query->month($query->quoteName($replacement));
case 'd':
return $query->day($query->quote($replacement));
case 'D':
return $query->day($query->quoteName($replacement));
case 'h':
return $query->hour($query->quote($replacement));
case 'H':
return $query->hour($query->quoteName($replacement));
case 'i':
return $query->minute($query->quote($replacement));
case 'I':
return $query->minute($query->quoteName($replacement));
case 's':
return $query->second($query->quote($replacement));
case 'S':
return $query->second($query->quoteName($replacement));
}
return '';
};
/**
* Regexp to find an replace all tokens.
* Matched fields:
* 0: Full token
* 1: Everything following '%'
* 2: Everything following '%' unless '%'
* 3: Argument specifier and '$'
* 4: Argument specifier
* 5: Type specifier
* 6: '%' if full token is '%%'
*/
return preg_replace_callback('#%(((([\d]+)\$)?([aeEnqQryYmMdDhHiIsStzZ]))|(%))#', $func, $format);
}
/**
* Validate arguments which are passed to selectRowNumber method and set up common variables.
*
* @param string $orderBy An expression of ordering for window function.
* @param string $orderColumnAlias An alias for new ordering column.
*
* @return void
*
* @since 2.0.0
* @throws \RuntimeException
*/
protected function validateRowNumber($orderBy, $orderColumnAlias)
{
if ($this->selectRowNumber)
{
throw new \RuntimeException("Method 'selectRowNumber' can be called only once per instance.");
}
$this->type = 'select';
$this->selectRowNumber = [
'orderBy' => $orderBy,
'orderColumnAlias' => $orderColumnAlias,
];
}
/**
* Return the number of the current row.
*
* Usage:
* $query->select('id');
* $query->selectRowNumber('ordering,publish_up DESC', 'new_ordering');
* $query->from('#__content');
*
* @param string $orderBy An expression of ordering for window function.
* @param string $orderColumnAlias An alias for new ordering column.
*
* @return $this
*
* @since 2.0.0
* @throws \RuntimeException
*/
public function selectRowNumber($orderBy, $orderColumnAlias)
{
$this->validateRowNumber($orderBy, $orderColumnAlias);
return $this->select("ROW_NUMBER() OVER (ORDER BY $orderBy) AS $orderColumnAlias");
}
}