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Major refactor/rewrite of ProcessWire's Database classes (DatabaseQuery, DatabaseQuerySelect, DatabaseQuerySelectFulltext)

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This commit is contained in:
Ryan Cramer
2020-05-22 13:25:28 -04:00
parent 99f778f109
commit 06acbe57a3
3 changed files with 704 additions and 321 deletions
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119
wire/core/DatabaseQuerySelect.php
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@@ -46,20 +46,27 @@
*/
class DatabaseQuerySelect extends DatabaseQuery {
/**
* DB cache setting from $config
*
* @var null
*
*/
static $dbCache = null;
/**
* Setup the components of a SELECT query
*
*/
public function __construct() {
parent::__construct();
$this->set('select', array());
$this->set('join', array());
$this->set('from', array());
$this->set('leftjoin', array());
$this->set('where', array());
$this->set('orderby', array());
$this->set('groupby', array());
$this->set('limit', array());
$this->addQueryMethod('select', 'SELECT ', ', ');
$this->addQueryMethod('from', " \nFROM `", '`,`', '` ');
$this->addQueryMethod('join', " \nJOIN ", " \nJOIN ");
$this->addQueryMethod('leftjoin', " \nLEFT JOIN ", " \nLEFT JOIN ");
$this->addQueryMethod('orderby', " \nORDER BY ", ",");
$this->addQueryMethod('groupby', " \nGROUP BY ", ',');
$this->addQueryMethod('limit', " \nLIMIT ", ',');
$this->set('comment', '');
}
@@ -69,15 +76,16 @@ class DatabaseQuerySelect extends DatabaseQuery {
*/
public function getQuery() {
$sql =
$this->getQuerySelect() .
$this->getQueryFrom() .
$this->getQueryJoin($this->join, "JOIN") .
$this->getQueryJoin($this->leftjoin, "LEFT JOIN") .
$this->getQueryWhere() .
$this->getQueryGroupby() .
$this->getQueryOrderby() .
$this->getQueryLimit();
$sql = trim(
$this->getQueryMethod('select') .
$this->getQueryMethod('from') .
$this->getQueryMethod('join') .
$this->getQueryMethod('leftjoin') .
$this->getQueryMethod('where') .
$this->getQueryMethod('groupby') .
$this->getQueryMethod('orderby') .
$this->getQueryMethod('limit')
) . ' ';
if($this->get('comment') && $this->wire('config')->debug) {
// NOTE: PDO thinks ? and :str param identifiers in /* comments */ are real params
@@ -90,7 +98,7 @@ class DatabaseQuerySelect extends DatabaseQuery {
}
/**
* Add an 'order by' element to the query
* Add an ORDER BY section to the query
*
* @param string|array $value
* @param bool $prepend Should the value be prepended onto the existing value? default is to append rather than prepend.
@@ -125,10 +133,20 @@ class DatabaseQuerySelect extends DatabaseQuery {
return $this;
}
/**
* Get SELECT portion of SQL
*
* @return string
*
*/
protected function getQuerySelect() {
if(self::$dbCache === null) {
self::$dbCache = $this->wire('config')->dbCache === false ? false : true;
}
$sql = '';
$select = $this->select;
$sql = '';
// ensure that an SQL_CALC_FOUND_ROWS request comes first
while(($key = array_search("SQL_CALC_FOUND_ROWS", $select)) !== false) {
@@ -136,36 +154,17 @@ class DatabaseQuerySelect extends DatabaseQuery {
unset($select[$key]);
}
if(!$sql) $sql = "SELECT ";
// $config->dbCache option for debugging purposes
if($this->wire('config')->dbCache === false) $sql .= "SQL_NO_CACHE ";
foreach($select as $s) $sql .= "$s,";
$sql = rtrim($sql, ",") . " ";
return $sql;
}
protected function getQueryFrom() {
$sql = "\nFROM ";
foreach($this->from as $s) $sql .= "`$s`,";
$sql = rtrim($sql, ",") . " ";
return $sql;
}
protected function getQueryJoin(array $join, $type) {
$sql = '';
foreach($join as $s) $sql .= "\n$type $s ";
return $sql;
}
protected function getQueryOrderby() {
if(!count($this->orderby)) return '';
$sql = "\nORDER BY ";
foreach($this->orderby as $s) $sql .= "$s,";
$sql = rtrim($sql, ",") . " ";
return $sql;
if(self::$dbCache === false) $sql .= "SQL_NO_CACHE ";
return $sql . implode(',', $select) . ' ';
}
/**
* Get GROUP BY section of SQL
*
* @return string
*
*/
protected function getQueryGroupby() {
if(!count($this->groupby)) return '';
$sql = "\nGROUP BY ";
@@ -186,23 +185,31 @@ class DatabaseQuerySelect extends DatabaseQuery {
foreach($having as $n => $h) {
if($n > 0) $sql .= " AND ";
$sql .= $h;
}
}
$sql = rtrim($sql, ",") . " ";
return $sql;
return rtrim($sql, ",") . " ";
}
/**
* Get LIMIT section of SQL
*
* @return string
*
*/
protected function getQueryLimit() {
if(!count($this->limit)) return '';
$limit = $this->limit;
$sql = "\nLIMIT " . reset($limit) . " ";
return $sql;
$limit = reset($limit);
if(strpos($limit, ',') !== false) {
list($start, $limit) = explode(',', $limit);
$start = (int) trim($start);
$limit = (int) trim($limit);
$limit = "$start,$limit";
} else {
$limit = (int) $limit;
}
return "\nLIMIT $limit ";
}
}