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<?php |
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namespace suda\orm\statement; |
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use ArrayObject; |
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use suda\orm\Binder; |
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use suda\orm\exception\SQLException; |
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/** |
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* Trait PrepareTrait |
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* @package suda\orm\statement |
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*/ |
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trait PrepareTrait |
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{ |
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/** |
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* 准备选择列 |
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* |
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* @param string|array $reads |
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* @param string $table |
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* @return string |
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*/ |
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protected function prepareReadFields($reads, string $table = ''):string |
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{ |
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if (is_string($reads)) { |
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$fields = $reads; |
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} else { |
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$field = []; |
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$prefix = strlen($table) ?"`{$table}`." :''; |
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foreach ($reads as $want) { |
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$field[] = $prefix."`$want`"; |
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} |
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$fields = implode(',', $field); |
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} |
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return $fields; |
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} |
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/** |
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* 准备条件列 |
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* |
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* @param array $where |
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* @return array |
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* @throws SQLException |
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*/ |
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protected function parepareWhere(array $where) |
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{ |
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$and = []; |
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$binders = []; |
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foreach ($where as $name => $value) { |
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$_name = Binder::index($name); |
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// in cause |
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if ($value instanceof ArrayObject) { |
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list($sql, $in_binder) = $this->prepareIn($name, $value); |
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$and[] = $sql; |
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$binders = array_merge($binders, $in_binder); |
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} elseif (is_array($value)) { |
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list($op, $val) = $value; |
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$op = trim($op); |
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$and[] = "`{$name}` {$op} :{$_name}"; |
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$binders[] = new Binder($_name, $val); |
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} else { |
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$and[] = "`{$name}`=:{$_name}"; |
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$binders[] = new Binder($_name, $value); |
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} |
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} |
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return [implode(' AND ', $and), $binders]; |
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} |
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/** |
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* @param string $where |
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* @param array $whereBinder |
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* @return array |
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* @throws SQLException |
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*/ |
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protected function prepareWhereString(string $where, array $whereBinder) |
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{ |
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foreach ($whereBinder as $name => $value) { |
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if (is_array($value) || $value instanceof ArrayObject) { |
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list($inSQL, $binders) = $this->prepareInParameter($value, $name); |
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$whereBinder = array_merge($whereBinder, $binders); |
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$name = ltrim($name, ':'); |
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$where = str_replace(':'.$name, $inSQL, $where); |
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} |
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} |
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return [$where, $whereBinder]; |
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} |
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/** |
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* 准备In |
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* |
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* @param string $name |
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* @param ArrayObject|array $values |
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* @return array |
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* @throws SQLException |
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*/ |
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protected function prepareIn(string $name, $values) |
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{ |
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list($inSQL, $binders) = $this->prepareInParameter($values, $name); |
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$sql = $name.' IN ('.$inSQL.')'; |
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return [$sql,$binders]; |
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} |
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/** |
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* @param $values |
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* @param string $name |
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* @return array |
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* @throws SQLException |
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*/ |
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protected function prepareInParameter($values, string $name) |
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{ |
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if (count($values) <= 0) { |
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throw new SQLException('on field '.$name.' value can\'t be empty array'); |
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} |
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$names = []; |
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$binders = []; |
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foreach ($values as $value) { |
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$_name = Binder::index($name); |
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$binders[] = new Binder($_name, $value); |
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$names[] = ':'.$_name; |
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} |
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return [implode(',', $names), $binders]; |
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} |
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/** |
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* 准备更新 |
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* |
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* @param array $data |
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* @return array |
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*/ |
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protected function prepareUpdateSet(array $data) |
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{ |
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$binders = []; |
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$sets = []; |
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foreach ($data as $name => $value) { |
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$_name = Binder::index($name); |
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$binders[] = new Binder($_name, $value, $name); |
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$sets[] = "`{$name}`=:{$_name}"; |
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} |
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return [implode(',', $sets), $binders]; |
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} |
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/** |
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* 编译 ? 字符 |
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* |
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* @param string $sql |
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* @param array $parameter |
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* @return array |
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*/ |
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protected function prepareQueryMark(string $sql, array $parameter) |
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{ |
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$binders = []; |
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$query = preg_replace_callback('/\?/', function ($match) use (&$binders, $parameter) { |
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$index = count($binders); |
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if (array_key_exists($index, $parameter)) { |
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$name = Binder::index($index); |
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if (is_array($parameter[$index]) || $parameter[$index] instanceof ArrayObject) { |
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list($inSQL, $inBinders) = $this->prepareInParameter($parameter[$index], $index); |
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$binders = array_merge($binders, $inBinders); |
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return $inSQL; |
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} else { |
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$binder = new Binder($name, $parameter[$index]); |
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$binders[] = $binder; |
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return ':'.$binder->getName(); |
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} |
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} |
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return $match[0]; |
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}, $sql); |
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return [$query, $binders]; |
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} |
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/** |
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172
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* 合并绑定工具 |
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* |
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* @param Binder[] $binder |
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* @param array $parameter |
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* @return Binder[] |
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*/ |
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protected function mergeBinder(array $binder, array $parameter) |
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{ |
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foreach ($parameter as $key => $value) { |
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if ($value instanceof Binder) { |
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$binder[] = $value; |
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} else { |
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$binder[] = new Binder($key, $value); |
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} |
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} |
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return $binder; |
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} |
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} |
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dxkite /
suda
