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<?php |
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/** |
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* Spiral Framework. |
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* |
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* @license MIT |
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* @author Anton Titov (Wolfy-J) |
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*/ |
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namespace Spiral\Database\Builders\Prototypes; |
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use Spiral\Database\Entities\QueryBuilder; |
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use Spiral\Database\Exceptions\BuilderException; |
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use Spiral\Database\Injections\ExpressionInterface; |
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use Spiral\Database\Injections\FragmentInterface; |
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use Spiral\Database\Injections\Parameter; |
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use Spiral\Database\Injections\ParameterInterface; |
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/** |
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* Abstract query with WHERE conditions generation support. Provides simplified way to generate |
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* WHERE tokens using set of where methods. Class support different where conditions, simplified |
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* definitions |
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* (using arrays) and closures to describe nested conditions: |
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* |
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* 1) Simple token/nested query or expression |
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* $select->where(new SQLFragment('(SELECT count(*) from `table`)')); |
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* |
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* 2) Simple assessment |
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* $select->where('column', $value); |
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* $select->where('column', new SQLFragment('CONCAT(columnA, columnB)')); |
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* |
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* 3) Assessment with specified operator (operator will be converted to uppercase automatically) |
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* $select->where('column', '=', $value); |
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* $select->where('column', 'IN', [1, 2, 3]); |
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* $select->where('column', 'LIKE', $string); |
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* $select->where('column', 'IN', new SQLFragment('(SELECT id from `table` limit 1)')); |
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* |
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* 4) Between and not between statements |
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* $select->where('column', 'between', 1, 10); |
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* $select->where('column', 'not between', 1, 10); |
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* $select->where('column', 'not between', new SQLFragment('MIN(price)'), $maximum); |
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* |
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* 5) Closure with nested conditions |
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* $this->where(function(AbstractWhere $select){ |
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* $select->where("name", "Wolfy-J")->orWhere("balance", ">", 100) |
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* }); |
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* |
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* 6) Simplified array based condition definition |
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* $select->where(["column" => 1]); |
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* $select->where(["column" => [ |
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* ">" => 1, |
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* "<" => 10 |
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* ]]); |
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* |
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* Tokens "@or" and "@and" used to aggregate nested conditions. |
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* $select->where([ |
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* "@or" => [ |
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* ["id" => 1], |
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* ["column" => ["like" => "name"]] |
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* ] |
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* ]); |
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* |
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* $select->where([ |
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* "@or" => [ |
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* ["id" => 1], ["id" => 2], ["id" => 3], ["id" => 4], ["id" => 5] |
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* ], |
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* "column" => [ |
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* "like" => "name" |
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* ], |
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* "x" => [ |
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* ">" => 1, |
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* "<" => 10 |
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* ] |
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* ]); |
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* |
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* To describe between or not between condition use array with two arguments. |
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* $select->where([ |
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* "column" => [ |
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* "between" => [1, 100] |
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* ] |
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* ]); |
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*/ |
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abstract class AbstractWhere extends QueryBuilder |
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{ |
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/** |
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* Tokens for nested OR and AND conditions. |
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*/ |
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const TOKEN_AND = "@AND"; |
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const TOKEN_OR = "@OR"; |
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/** |
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* Set of generated where tokens, format must be supported by QueryCompilers. |
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* |
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* @var array |
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*/ |
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protected $whereTokens = []; |
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/** |
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* Parameters collected while generating WHERE tokens, must be in a same order as parameters |
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* in resulted query. |
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* |
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* @var array |
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*/ |
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protected $whereParameters = []; |
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/** |
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* Simple WHERE condition with various set of arguments. |
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* |
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* @see AbstractWhere |
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* @param string|mixed $identifier Column or expression. |
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* @param mixed $variousA Operator or value. |
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* @param mixed $variousB Value, if operator specified. |
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* @param mixed $variousC Required only in between statements. |
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* @return $this |
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* @throws BuilderException |
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*/ |
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public function where($identifier, $variousA = null, $variousB = null, $variousC = null) |
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{ |
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$this->whereToken('AND', func_get_args(), $this->whereTokens, $this->whereWrapper()); |
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return $this; |
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} |
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/** |
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* Simple AND WHERE condition with various set of arguments. |
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* |
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* @see AbstractWhere |
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* @param string|mixed $identifier Column or expression. |
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* @param mixed $variousA Operator or value. |
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* @param mixed $variousB Value, if operator specified. |
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* @param mixed $variousC Required only in between statements. |
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* @return $this |
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* @throws BuilderException |
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*/ |
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public function andWhere($identifier, $variousA = null, $variousB = null, $variousC = null) |
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{ |
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$this->whereToken('AND', func_get_args(), $this->whereTokens, $this->whereWrapper()); |
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return $this; |
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} |
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/** |
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* Simple OR WHERE condition with various set of arguments. |
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* |
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* @see AbstractWhere |
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* @param string|mixed $identifier Column or expression. |
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* @param mixed $variousA Operator or value. |
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* @param mixed $variousB Value, if operator specified. |
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* @param mixed $variousC Required only in between statements. |
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* @return $this |
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* @throws BuilderException |
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*/ |
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public function orWhere($identifier, $variousA = [], $variousB = null, $variousC = null) |
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{ |
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$this->whereToken('OR', func_get_args(), $this->whereTokens, $this->whereWrapper()); |
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return $this; |
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} |
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/** |
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* Convert various amount of where function arguments into valid where token. |
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* |
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* @see AbstractWhere |
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* @param string $joiner Boolean joiner (AND | OR). |
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* @param array $parameters Set of parameters collected from where functions. |
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* @param array $tokens Array to aggregate compiled tokens. Reference. |
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* @param callable $wrapper Callback or closure used to wrap/collect every potential |
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* parameter. |
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* @throws BuilderException |
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*/ |
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protected function whereToken($joiner, array $parameters, &$tokens = [], callable $wrapper) |
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{ |
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list($identifier, $valueA, $valueB, $valueC) = $parameters + array_fill(0, 5, null); |
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if (empty($identifier)) { |
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//Nothing to do |
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return; |
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} |
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//Where conditions specified in array form |
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if (is_array($identifier)) { |
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if (count($identifier) == 1) { |
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$this->arrayWhere( |
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$joiner == 'AND' ? self::TOKEN_AND : self::TOKEN_OR, |
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$identifier, |
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$tokens, |
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$wrapper |
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); |
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return; |
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} |
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$tokens[] = [$joiner, '(']; |
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$this->arrayWhere(self::TOKEN_AND, $identifier, $tokens, $wrapper); |
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$tokens[] = ['', ')']; |
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return; |
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} |
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if ($identifier instanceof \Closure) { |
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$tokens[] = [$joiner, '(']; |
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call_user_func($identifier, $this, $joiner, $wrapper); |
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$tokens[] = ['', ')']; |
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return; |
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} |
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if ($identifier instanceof QueryBuilder) { |
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//Will copy every parameter from QueryBuilder |
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$wrapper($identifier); |
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} |
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switch (count($parameters)) { |
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case 1: |
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//AND|OR [identifier: sub-query] |
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$tokens[] = [$joiner, $identifier]; |
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break; |
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View Code Duplication |
case 2: |
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//AND|OR [identifier] = [valueA] |
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$tokens[] = [$joiner, [$identifier, '=', $wrapper($valueA)]]; |
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break; |
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View Code Duplication |
case 3: |
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//AND|OR [identifier] [valueA: OPERATION] [valueA] |
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$tokens[] = [$joiner, [$identifier, strtoupper($valueA), $wrapper($valueB)]]; |
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break; |
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case 4: |
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//BETWEEN or NOT BETWEEN |
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$valueA = strtoupper($valueA); |
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if (!in_array($valueA, ['BETWEEN', 'NOT BETWEEN'])) { |
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throw new BuilderException( |
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'Only "BETWEEN" or "NOT BETWEEN" can define second comparasions value.' |
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); |
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} |
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//AND|OR [identifier] [valueA: BETWEEN|NOT BETWEEN] [valueB] [valueC] |
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$tokens[] = [$joiner, [$identifier, $valueA, $wrapper($valueB), $wrapper($valueC)]]; |
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} |
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} |
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/** |
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* Convert simplified where definition into valid set of where tokens. |
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* |
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* @see AbstractWhere |
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* @param string $grouper Grouper type (see self::TOKEN_AND, self::TOKEN_OR). |
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* @param array $where Simplified where definition. |
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* @param array $tokens Array to aggregate compiled tokens. Reference. |
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* @param callable $wrapper Callback or closure used to wrap/collect every potential |
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* parameter. |
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* @throws BuilderException |
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*/ |
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private function arrayWhere($grouper, array $where, &$tokens, callable $wrapper) |
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{ |
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$joiner = ($grouper == self::TOKEN_AND ? 'AND' : 'OR'); |
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foreach ($where as $key => $value) { |
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$token = strtoupper($key); |
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//Grouping identifier (@OR, @AND), MongoDB like style |
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if ($token == self::TOKEN_AND || $token == self::TOKEN_OR) { |
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$tokens[] = [$joiner, '(']; |
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foreach ($value as $nested) { |
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if (count($nested) == 1) { |
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$this->arrayWhere($token, $nested, $tokens, $wrapper); |
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continue; |
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} |
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$tokens[] = [$token == self::TOKEN_AND ? 'AND' : 'OR', '(']; |
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$this->arrayWhere(self::TOKEN_AND, $nested, $tokens, $wrapper); |
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$tokens[] = ['', ')']; |
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} |
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$tokens[] = ['', ')']; |
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continue; |
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} |
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//AND|OR [name] = [value] |
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if (!is_array($value)) { |
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$tokens[] = [$joiner, [$key, '=', $wrapper($value)]]; |
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continue; |
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} |
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if (count($value) > 1) { |
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//Multiple values to be joined by AND condition (x = 1, x != 5) |
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$tokens[] = [$joiner, '(']; |
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$this->builtConditions('AND', $key, $value, $tokens, $wrapper); |
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$tokens[] = ['', ')']; |
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} else { |
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$this->builtConditions($joiner, $key, $value, $tokens, $wrapper); |
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} |
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} |
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return; |
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} |
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/** |
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* Build set of conditions for specified identifier. |
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* |
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* @param string $innerJoiner Inner boolean joiner. |
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* @param string $key Column identifier. |
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* @param array $where Operations associated with identifier. |
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* @param array $tokens Array to aggregate compiled tokens. Reference. |
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* @param callable $wrapper Callback or closure used to wrap/collect every potential |
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* parameter. |
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* @return array |
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*/ |
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private function builtConditions($innerJoiner, $key, $where, &$tokens, callable $wrapper) |
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{ |
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foreach ($where as $operation => $value) { |
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if (is_numeric($operation)) { |
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throw new BuilderException("Nested conditions should have defined operator."); |
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} |
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$operation = strtoupper($operation); |
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if (!in_array($operation, ['BETWEEN', 'NOT BETWEEN'])) { |
|
315
|
|
|
//AND|OR [name] [OPERATION] [nestedValue] |
|
316
|
|
|
$tokens[] = [$innerJoiner, [$key, $operation, $wrapper($value)]]; |
|
317
|
|
|
continue; |
|
318
|
|
|
} |
|
319
|
|
|
|
|
320
|
|
|
/** |
|
321
|
|
|
* Between and not between condition described using array of [left, right] syntax. |
|
322
|
|
|
*/ |
|
323
|
|
|
|
|
324
|
|
|
if (!is_array($value) || count($value) != 2) { |
|
325
|
|
|
throw new BuilderException( |
|
326
|
|
|
"Exactly 2 array values are required for between statement." |
|
327
|
|
|
); |
|
328
|
|
|
} |
|
329
|
|
|
|
|
330
|
|
|
$tokens[] = [ |
|
331
|
|
|
//AND|OR [name] [BETWEEN|NOT BETWEEN] [value 1] [value 2] |
|
|
|
|
|
|
332
|
|
|
$innerJoiner, |
|
333
|
|
|
[$key, $operation, $wrapper($value[0]), $wrapper($value[1])] |
|
334
|
|
|
]; |
|
335
|
|
|
} |
|
336
|
|
|
|
|
337
|
|
|
return $tokens; |
|
338
|
|
|
} |
|
339
|
|
|
|
|
340
|
|
|
/** |
|
341
|
|
|
* Applied to every potential parameter while where tokens generation. Used to prepare and |
|
342
|
|
|
* collect where parameters. |
|
343
|
|
|
* |
|
344
|
|
|
* @return \Closure |
|
345
|
|
|
*/ |
|
346
|
|
View Code Duplication |
private function whereWrapper() |
|
|
|
|
|
|
347
|
|
|
{ |
|
348
|
|
|
return function ($parameter) { |
|
349
|
|
|
if ($parameter instanceof FragmentInterface) { |
|
350
|
|
|
//We are only not creating bindings for plan fragments |
|
351
|
|
|
if (!$parameter instanceof ParameterInterface && !$parameter instanceof QueryBuilder) { |
|
352
|
|
|
return $parameter; |
|
353
|
|
|
} |
|
354
|
|
|
} |
|
355
|
|
|
|
|
356
|
|
|
if (is_array($parameter)) { |
|
357
|
|
|
throw new BuilderException("Arrays must be wrapped with Parameter instance."); |
|
358
|
|
|
} |
|
359
|
|
|
|
|
360
|
|
|
//Wrapping all values with ParameterInterface |
|
361
|
|
|
if (!$parameter instanceof ParameterInterface && !$parameter instanceof ExpressionInterface) { |
|
362
|
|
|
$parameter = new Parameter($parameter, Parameter::DETECT_TYPE); |
|
363
|
|
|
}; |
|
364
|
|
|
|
|
365
|
|
|
//Let's store to sent to driver when needed |
|
366
|
|
|
$this->whereParameters[] = $parameter; |
|
367
|
|
|
|
|
368
|
|
|
return $parameter; |
|
369
|
|
|
}; |
|
370
|
|
|
} |
|
371
|
|
|
} |
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.