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<?php |
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namespace HexMakina\Crudites\Grammar\Query; |
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use HexMakina\Crudites\Crudites; |
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use HexMakina\Crudites\CruditesException; |
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use HexMakina\BlackBox\Database\TableInterface; |
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trait ClauseJoin |
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{ |
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protected $joined_tables = []; |
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abstract public function backTick($field, $table_name = null); |
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abstract public function addBinding($field, $value, $table_name, $bind_label = null): string; |
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/** |
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* Adds a joined table to the query. |
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* |
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* @param string $join_table_name The name of the table to join. |
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* @param string $join_table_alias The alias for the joined table. |
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* @throws \InvalidArgumentException If the alias is already allocated for a different table. |
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*/ |
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public function addJoinedTable($join_table_name, $join_table_alias) |
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{ |
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if(!isset($this->joined_tables[$join_table_alias])){ |
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$this->joined_tables[$join_table_alias] = $join_table_name; |
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} |
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elseif ($this->joined_tables[$join_table_alias] !== $join_table_name){ |
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throw new \InvalidArgumentException(sprintf(__FUNCTION__.'(): ALIAS `%s` ALREADY ALLOCATED FOR TABLE `%s`', $join_table_alias, $join_table_name)); |
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} |
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} |
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public function join($table_names, $joins, $join_type = '') |
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{ |
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list($join_table_name,$join_table_alias) = self::processParamTableNames($table_names); |
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if (preg_match('#^(INNER|LEFT|RIGHT|FULL)(\sOUTER)?#i', $join_type) !== 1) { |
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$join_type = ''; |
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} |
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$this->addJoinedTable($join_table_name, $join_table_alias); |
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$raw_join = $this->generateJoin($join_type, $join_table_name, $join_table_alias, $joins); |
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$this->joinRaw($raw_join); |
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return $this; |
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} |
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public function joinRaw($sql) |
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{ |
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return $this->addClause('join', $sql); |
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} |
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protected function generateJoin($join_type, $join_table_name, $join_table_alias = null, $join_fields = []): string |
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{ |
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$join_table_alias ??= $join_table_name; |
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$join_parts = []; |
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foreach ($join_fields as $join_field) { |
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$table = array_shift($join_field); |
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$field = array_shift($join_field); |
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if (!isset($table, $field, $join_field[0])) { |
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throw new \InvalidArgumentException('INVALID_JOIN_FIELDS'); |
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} |
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$right_operand = null; |
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// 4 join params -> t.f = t.f |
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if (isset($join_field[1])) { |
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$right_operand = $this->backTick($join_field[1], $join_field[0]); |
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} |
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// 3 join params -> t.f = v |
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else{ |
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$value = $join_field[0]; |
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// join bind label |
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$bind_label = sprintf(':jbl_%s_%s', $join_table_alias, $field); |
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// vd($bind_label, 'bind_label'); |
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$this->addBinding($field, $value, $join_table_alias, $bind_label); |
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$right_operand = $bind_label; |
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} |
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$join_parts[] = sprintf('%s = %s', $this->backTick($field, $table), $right_operand); |
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} |
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return sprintf('%s JOIN `%s` %s ON %s', $join_type, $join_table_name, $join_table_alias, implode(' AND ', $join_parts)); |
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} |
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/** |
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* @return mixed[] |
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*/ |
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public function joinedTables(): array |
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{ |
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return $this->joined_tables; |
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} |
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/** |
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* @return mixed[]|string[] |
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*/ |
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private static function processParamTableNames($table_names): array |
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{ |
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// it's an array with two indexes, all fine |
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if (is_array($table_names) && isset($table_names[1]) && !isset($table_names[2])) { |
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return $table_names; |
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} |
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if (is_array($table_names) && !isset($table_names[1])) { |
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$table_names = current($table_names); |
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} |
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if (is_string($table_names)) { |
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return [$table_names, $table_names]; |
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} |
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throw new \InvalidArgumentException('INVALID_PARAM_TABLE_NAMES'); |
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} |
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} |
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HexMakina /
Crudites
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