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<?php |
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/** |
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* Trait WhereTrait |
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* |
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* @filesource WhereTrait.php |
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* @created 12.06.2017 |
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* @package chillerlan\Database\Query\Traits |
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* @author Smiley <[email protected]> |
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* @copyright 2017 Smiley |
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* @license MIT |
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*/ |
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namespace chillerlan\Database\Query\Traits; |
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use chillerlan\Database\Query\StatementInterface; |
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trait WhereTrait{ |
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/** |
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* @var array |
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*/ |
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protected $where = []; |
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protected function _addWhere($val1, $val2 = null, $operator = null, $bind = true, $join = 'AND'){ |
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$operator = strtoupper(trim($operator)); |
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$join = strtoupper(trim($join)); |
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$operators = [ |
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'=', '>=', '>', '<=', '<', '<>', '!=', |
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'|', '&', '<<', '>>', '+', '-', '*', '/', '%', '^', '<=>', '~', '!', 'DIV', 'MOD', |
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'IS', 'IS NOT', 'IN', 'NOT IN', 'LIKE', 'NOT LIKE', 'REGEXP', 'NOT REGEXP', 'BETWEEN', 'NOT BETWEEN', 'EXISTS' |
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]; |
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if(in_array($operator, $operators, true)){ |
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$where = [$this->quote($val1)]; |
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$values = []; |
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if(in_array($operator, ['IN', 'NOT IN'], true)){ |
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if(is_array($val2)){ |
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if($bind){ |
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$where[] = 'IN('.implode(',', array_fill(0, count($val2), '?')).')'; |
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$values = array_merge($values, $val2); |
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} |
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else{ |
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$where[] = 'IN('.implode(',', $val2).')'; // @todo: quote |
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} |
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} |
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else if($val2 instanceof StatementInterface){ |
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$where[] = 'IN('.$val2->sql().')'; |
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$values = array_merge($values, $val2->bindValues()); |
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} |
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} |
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else if(in_array($operator, ['BETWEEN', 'NOT BETWEEN'], true)){ |
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// @todo |
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} |
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else{ |
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$where[] = $operator; |
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if(is_null($val2)){ |
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$where[] = 'NULL'; |
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} |
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else if(is_bool($val2)){ |
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$where[] = $val2 ? 'TRUE' : 'FALSE'; |
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} |
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else if(in_array(strtolower($val2), ['null', 'false', 'true', 'unknown'])){ |
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$where[] = strtoupper($val2); |
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} |
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else if($val2 instanceof StatementInterface){ |
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$where[] = '('.$val2->sql().')'; |
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$values = array_merge($values, $val2->bindValues()); |
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} |
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else{ |
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if($bind){ |
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$where[] = '?'; |
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$values[] = $val2; |
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} |
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else{ |
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if(!empty($val2)){ |
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$where[] = $this->quote($val2); |
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} |
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} |
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} |
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} |
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$this->bindValues = array_merge($this->bindValues, $values); |
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$this->where[] = [ |
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'join' => in_array($join, ['AND', 'OR', 'XOR']) ? $join : 'AND', |
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'stmt' => implode(' ', $where), |
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]; |
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} |
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return $this; |
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} |
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/** |
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* @param string|null $join |
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* |
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* @return $this |
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*/ |
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protected function _openBracket($join = null){ |
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$join = strtoupper(trim($join)); |
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if(in_array($join, ['AND', 'OR', 'XOR'])){ |
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$this->where[] = $join; |
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} |
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$this->where[] = '('; |
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return $this; |
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} |
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/** |
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* @return $this |
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*/ |
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protected function _closeBracket(){ |
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$this->where[] = ')'; |
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return $this; |
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} |
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/** |
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* @return string |
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*/ |
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protected function _getWhere():string { |
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$where = []; |
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foreach($this->where as $k => $v){ |
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$last = $this->where[$k-1] ?? false; |
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if(in_array($v, ['AND', 'OR', 'XOR', '(', ')'], true)){ |
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$where[] = $v; |
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continue; |
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} |
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if(!is_array($v)){ |
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continue; |
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} |
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if(!$last || $last === '('){ |
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$where[] = $v['stmt']; |
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} |
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else{ |
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$where[] = $v['join'].' '.$v['stmt']; |
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} |
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} |
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return !empty($where) ? PHP_EOL.'WHERE '.implode(' '.PHP_EOL."\t", $where) : ''; |
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} |
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} |
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This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idable
provides a methodequalsId
that in turn relies on the methodgetId()
. If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()
as an abstract method to the trait will make sure it is available.