Qiang Xue
13 years ago
8 changed files with 1282 additions and 832 deletions
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<?php |
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/** |
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* BaseQuery class file. |
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* |
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* @author Qiang Xue <qiang.xue@gmail.com> |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright © 2008-2012 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\db\dao; |
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/** |
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* BaseQuery represents a SQL statement in a way that is independent of DBMS. |
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* |
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* BaseQuery not only can represent a SELECT statement, it can also represent INSERT, UPDATE, DELETE, |
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* and other commonly used DDL statements, such as CREATE TABLE, CREATE INDEX, etc. |
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* |
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* BaseQuery provides a set of methods to facilitate the specification of different clauses. |
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* These methods can be chained together. For example, |
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* |
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* ~~~ |
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* $query = new Query; |
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* $query->select('id, name') |
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* ->from('tbl_user') |
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* ->limit(10); |
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* // get the actual SQL statement |
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* echo $query->getSql(); |
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* // or execute the query |
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* $users = $query->createCommand()->queryAll(); |
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* ~~~ |
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* |
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* By calling [[getSql()]], we can obtain the actual SQL statement from a Query object. |
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* And by calling [[createCommand()]], we can get a [[Command]] instance which can be further |
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* used to perform/execute the DB query against a database. |
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* |
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* @property string $sql the SQL statement represented by this query object. |
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* |
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* @author Qiang Xue <qiang.xue@gmail.com> |
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* @since 2.0 |
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*/ |
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class BaseQuery extends \yii\base\Object |
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{ |
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/** |
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* @var string|array the columns being selected. This refers to the SELECT clause in a SQL |
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* statement. It can be either a string (e.g. `'id, name'`) or an array (e.g. `array('id', 'name')`). |
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* If not set, if means all columns. |
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* @see select() |
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*/ |
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public $select; |
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/** |
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* @var string additional option that should be appended to the 'SELECT' keyword. For example, |
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* in MySQL, the option 'SQL_CALC_FOUND_ROWS' can be used. |
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*/ |
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public $selectOption; |
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/** |
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* @var boolean whether to select distinct rows of data only. If this is set true, |
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* the SELECT clause would be changed to SELECT DISTINCT. |
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*/ |
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public $distinct; |
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/** |
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* @var string|array the table(s) to be selected from. This refers to the FROM clause in a SQL statement. |
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* It can be either a string (e.g. `'tbl_user, tbl_post'`) or an array (e.g. `array('tbl_user', 'tbl_post')`). |
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* @see from() |
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*/ |
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public $from; |
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/** |
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* @var string|array query condition. This refers to the WHERE clause in a SQL statement. |
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* For example, `age > 31 AND team = 1`. |
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* @see where() |
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*/ |
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public $where; |
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/** |
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* @var integer maximum number of records to be returned. If not set or less than 0, it means no limit. |
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*/ |
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public $limit; |
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/** |
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* @var integer zero-based offset from where the records are to be returned. If not set or |
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* less than 0, it means starting from the beginning. |
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*/ |
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public $offset; |
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/** |
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* @var string|array how to sort the query results. This refers to the ORDER BY clause in a SQL statement. |
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* It can be either a string (e.g. `'id ASC, name DESC'`) or an array (e.g. `array('id ASC', 'name DESC')`). |
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*/ |
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public $orderBy; |
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/** |
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* @var string|array how to group the query results. This refers to the GROUP BY clause in a SQL statement. |
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* It can be either a string (e.g. `'company, department'`) or an array (e.g. `array('company', 'department')`). |
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*/ |
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public $groupBy; |
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/** |
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* @var string|array how to join with other tables. This refers to the JOIN clause in a SQL statement. |
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* It can either a string (e.g. `'LEFT JOIN tbl_user ON tbl_user.id=author_id'`) or an array (e.g. |
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* `array('LEFT JOIN tbl_user ON tbl_user.id=author_id', 'LEFT JOIN tbl_team ON tbl_team.id=team_id')`). |
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* @see join() |
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*/ |
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public $join; |
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/** |
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* @var string|array the condition to be applied in the GROUP BY clause. |
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* It can be either a string or an array. Please refer to [[where()]] on how to specify the condition. |
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*/ |
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public $having; |
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/** |
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* @var array list of query parameter values indexed by parameter placeholders. |
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* For example, `array(':name'=>'Dan', ':age'=>31)`. |
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*/ |
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public $params; |
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/** |
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* @var string|array the UNION clause(s) in a SQL statement. This can be either a string |
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* representing a single UNION clause or an array representing multiple UNION clauses. |
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* Each union clause can be a string or a `Query` object which refers to the SQL statement. |
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*/ |
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public $union; |
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/** |
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* Sets the SELECT part of the query. |
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* @param mixed $columns the columns to be selected. Defaults to '*', meaning all columns. |
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* Columns can be specified in either a string (e.g. "id, name") or an array (e.g. array('id', 'name')). |
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* Columns can contain table prefixes (e.g. "tbl_user.id") and/or column aliases (e.g. "tbl_user.id AS user_id"). |
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* The method will automatically quote the column names unless a column contains some parenthesis |
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* (which means the column contains a DB expression). |
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* @param string $option additional option that should be appended to the 'SELECT' keyword. For example, |
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* in MySQL, the option 'SQL_CALC_FOUND_ROWS' can be used. |
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* @return BaseQuery the query object itself |
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*/ |
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public function select($columns = '*', $option = '') |
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{ |
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$this->select = $columns; |
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$this->selectOption = $option; |
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return $this; |
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} |
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/** |
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* Sets the value indicating whether to SELECT DISTINCT or not. |
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* @param bool $value whether to SELECT DISTINCT or not. |
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* @return BaseQuery the query object itself |
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*/ |
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public function distinct($value = true) |
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{ |
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$this->distinct = $value; |
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return $this; |
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} |
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/** |
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* Sets the FROM part of the query. |
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* @param mixed $tables the table(s) to be selected from. This can be either a string (e.g. 'tbl_user') |
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* or an array (e.g. array('tbl_user', 'tbl_profile')) specifying one or several table names. |
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* Table names can contain schema prefixes (e.g. 'public.tbl_user') and/or table aliases (e.g. 'tbl_user u'). |
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* The method will automatically quote the table names unless it contains some parenthesis |
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* (which means the table is given as a sub-query or DB expression). |
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* @return BaseQuery the query object itself |
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*/ |
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public function from($tables) |
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{ |
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$this->from = $tables; |
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return $this; |
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} |
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/** |
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* Sets the WHERE part of the query. |
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* |
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* The method requires a $condition parameter, and optionally a $params parameter |
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* specifying the values to be bound to the query. |
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* |
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* The $condition parameter should be either a string (e.g. 'id=1') or an array. |
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* If the latter, it must be in one of the following two formats: |
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* |
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* - hash format: `array('column1' => value1, 'column2' => value2, ...)` |
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* - operator format: `array(operator, operand1, operand2, ...)` |
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* |
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* A condition in hash format represents the following SQL expression in general: |
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* `column1=value1 AND column2=value2 AND ...`. In case when a value is an array, |
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* an `IN` expression will be generated. And if a value is null, `IS NULL` will be used |
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* in the generated expression. Below are some examples: |
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* |
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* - `array('type'=>1, 'status'=>2)` generates `(type=1) AND (status=2)`. |
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* - `array('id'=>array(1,2,3), 'status'=>2)` generates `(id IN (1,2,3)) AND (status=2)`. |
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* - `array('status'=>null) generates `status IS NULL`. |
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* |
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* A condition in operator format generates the SQL expression according to the specified operator, which |
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* can be one of the followings: |
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* |
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* - `and`: the operands should be concatenated together using `AND`. For example, |
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* `array('and', 'id=1', 'id=2')` will generate `id=1 AND id=2`. If an operand is an array, |
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* it will be converted into a string using the rules described here. For example, |
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* `array('and', 'type=1', array('or', 'id=1', 'id=2'))` will generate `type=1 AND (id=1 OR id=2)`. |
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* The method will NOT do any quoting or escaping. |
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* |
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* - `or`: similar to the `and` operator except that the operands are concatenated using `OR`. |
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* |
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* - `between`: operand 1 should be the column name, and operand 2 and 3 should be the |
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* starting and ending values of the range that the column is in. |
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* For example, `array('between', 'id', 1, 10)` will generate `id BETWEEN 1 AND 10`. |
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* |
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* - `not between`: similar to `between` except the `BETWEEN` is replaced with `NOT BETWEEN` |
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* in the generated condition. |
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* |
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* - `in`: operand 1 should be a column or DB expression, and operand 2 be an array representing |
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* the range of the values that the column or DB expression should be in. For example, |
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* `array('in', 'id', array(1,2,3))` will generate `id IN (1,2,3)`. |
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* The method will properly quote the column name and escape values in the range. |
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* |
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* - `not in`: similar to the `in` operator except that `IN` is replaced with `NOT IN` in the generated condition. |
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* |
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* - `like`: operand 1 should be a column or DB expression, and operand 2 be a string or an array representing |
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* the values that the column or DB expression should be like. |
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* For example, `array('like', 'name', '%tester%')` will generate `name LIKE '%tester%'`. |
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* When the value range is given as an array, multiple `LIKE` predicates will be generated and concatenated |
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* using `AND`. For example, `array('like', 'name', array('%test%', '%sample%'))` will generate |
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* `name LIKE '%test%' AND name LIKE '%sample%'`. |
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* The method will properly quote the column name and escape values in the range. |
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* |
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* - `or like`: similar to the `like` operator except that `OR` is used to concatenate the `LIKE` |
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* predicates when operand 2 is an array. |
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* |
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* - `not like`: similar to the `like` operator except that `LIKE` is replaced with `NOT LIKE` |
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* in the generated condition. |
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* |
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* - `or not like`: similar to the `not like` operator except that `OR` is used to concatenate |
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* the `NOT LIKE` predicates. |
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* |
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* @param string|array $condition the conditions that should be put in the WHERE part. |
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* @param array $params the parameters (name=>value) to be bound to the query. |
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* For anonymous parameters, they can alternatively be specified as separate parameters to this method. |
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* For example, `where('type=? AND status=?', 100, 1)`. |
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* @return BaseQuery the query object itself |
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* @see andWhere() |
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* @see orWhere() |
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*/ |
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public function where($condition, $params = array()) |
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{ |
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$this->where = $condition; |
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if (!is_array($params)) { |
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$params = func_get_args(); |
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unset($params[0]); |
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} |
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$this->addParams($params); |
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return $this; |
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} |
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/** |
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* Adds an additional WHERE condition to the existing one. |
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* The new condition and the existing one will be joined using the 'AND' operator. |
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* @param string|array $condition the new WHERE condition. Please refer to [[where()]] |
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* on how to specify this parameter. |
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* @param array $params the parameters (name=>value) to be bound to the query. |
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* Please refer to [[where()]] on alternative syntax of specifying anonymous parameters. |
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* @return BaseQuery the query object itself |
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* @see where() |
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* @see orWhere() |
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*/ |
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public function andWhere($condition, $params = array()) |
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{ |
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if ($this->where === null) { |
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$this->where = $condition; |
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} else { |
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$this->where = array('and', $this->where, $condition); |
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} |
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if (!is_array($params)) { |
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$params = func_get_args(); |
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unset($params[0]); |
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} |
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$this->addParams($params); |
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return $this; |
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} |
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/** |
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* Adds an additional WHERE condition to the existing one. |
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* The new condition and the existing one will be joined using the 'OR' operator. |
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* @param string|array $condition the new WHERE condition. Please refer to [[where()]] |
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* on how to specify this parameter. |
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* @param array $params the parameters (name=>value) to be bound to the query. |
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* Please refer to [[where()]] on alternative syntax of specifying anonymous parameters. |
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* @return BaseQuery the query object itself |
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* @see where() |
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* @see andWhere() |
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*/ |
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public function orWhere($condition, $params = array()) |
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{ |
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if ($this->where === null) { |
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$this->where = $condition; |
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} else { |
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$this->where = array('or', $this->where, $condition); |
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} |
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if (!is_array($params)) { |
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$params = func_get_args(); |
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unset($params[0]); |
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} |
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$this->addParams($params); |
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return $this; |
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} |
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/** |
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* Appends an INNER JOIN part to the query. |
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* @param string $table the table to be joined. |
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* Table name can contain schema prefix (e.g. 'public.tbl_user') and/or table alias (e.g. 'tbl_user u'). |
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* The method will automatically quote the table name unless it contains some parenthesis |
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* (which means the table is given as a sub-query or DB expression). |
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* @param string|array $condition the join condition that should appear in the ON part. |
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* Please refer to [[where()]] on how to specify this parameter. |
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* @param array $params the parameters (name=>value) to be bound to the query. |
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* Please refer to [[where()]] on alternative syntax of specifying anonymous parameters. |
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* @return BaseQuery the query object itself |
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*/ |
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public function join($table, $condition, $params = array()) |
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{ |
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$this->join[] = array('JOIN', $table, $condition); |
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if (!is_array($params)) { |
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$params = func_get_args(); |
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array_shift($params); |
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unset($params[0]); |
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} |
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return $this->addParams($params); |
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} |
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/** |
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* Appends a LEFT OUTER JOIN part to the query. |
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* @param string $table the table to be joined. |
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* Table name can contain schema prefix (e.g. 'public.tbl_user') and/or table alias (e.g. 'tbl_user u'). |
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* The method will automatically quote the table name unless it contains some parenthesis |
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* (which means the table is given as a sub-query or DB expression). |
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* @param string|array $condition the join condition that should appear in the ON part. |
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* Please refer to [[where()]] on how to specify this parameter. |
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* @param array $params the parameters (name=>value) to be bound to the query |
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* @return BaseQuery the query object itself |
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*/ |
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public function leftJoin($table, $condition, $params = array()) |
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{ |
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$this->join[] = array('LEFT JOIN', $table, $condition); |
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if (!is_array($params)) { |
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$params = func_get_args(); |
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array_shift($params); |
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unset($params[0]); |
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} |
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return $this->addParams($params); |
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} |
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/** |
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* Appends a RIGHT OUTER JOIN part to the query. |
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* @param string $table the table to be joined. |
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* Table name can contain schema prefix (e.g. 'public.tbl_user') and/or table alias (e.g. 'tbl_user u'). |
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* The method will automatically quote the table name unless it contains some parenthesis |
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* (which means the table is given as a sub-query or DB expression). |
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* @param string|array $condition the join condition that should appear in the ON part. |
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* Please refer to [[where()]] on how to specify this parameter. |
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* @param array $params the parameters (name=>value) to be bound to the query |
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* @return BaseQuery the query object itself |
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*/ |
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public function rightJoin($table, $condition, $params = array()) |
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{ |
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$this->join[] = array('RIGHT JOIN', $table, $condition); |
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if (!is_array($params)) { |
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$params = func_get_args(); |
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array_shift($params); |
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unset($params[0]); |
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} |
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return $this->addParams($params); |
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} |
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/** |
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* Appends a CROSS JOIN part to the query. |
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* Note that not all DBMS support CROSS JOIN. |
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* @param string $table the table to be joined. |
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* Table name can contain schema prefix (e.g. 'public.tbl_user') and/or table alias (e.g. 'tbl_user u'). |
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* The method will automatically quote the table name unless it contains some parenthesis |
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* (which means the table is given as a sub-query or DB expression). |
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* @return BaseQuery the query object itself |
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*/ |
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public function crossJoin($table) |
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{ |
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$this->join[] = array('CROSS JOIN', $table); |
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return $this; |
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} |
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/** |
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* Appends a NATURAL JOIN part to the query. |
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* Note that not all DBMS support NATURAL JOIN. |
|
||||||
* @param string $table the table to be joined. |
|
||||||
* Table name can contain schema prefix (e.g. 'public.tbl_user') and/or table alias (e.g. 'tbl_user u'). |
|
||||||
* The method will automatically quote the table name unless it contains some parenthesis |
|
||||||
* (which means the table is given as a sub-query or DB expression). |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
*/ |
|
||||||
public function naturalJoin($table) |
|
||||||
{ |
|
||||||
$this->join[] = array('NATURAL JOIN', $table); |
|
||||||
return $this; |
|
||||||
} |
|
||||||
|
|
||||||
/** |
|
||||||
* Sets the GROUP BY part of the query. |
|
||||||
* @param string|array $columns the columns to be grouped by. |
|
||||||
* Columns can be specified in either a string (e.g. "id, name") or an array (e.g. array('id', 'name')). |
|
||||||
* The method will automatically quote the column names unless a column contains some parenthesis |
|
||||||
* (which means the column contains a DB expression). |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
* @see addGroupBy() |
|
||||||
*/ |
|
||||||
public function groupBy($columns) |
|
||||||
{ |
|
||||||
$this->groupBy = $columns; |
|
||||||
return $this; |
|
||||||
} |
|
||||||
|
|
||||||
/** |
|
||||||
* Adds additional group-by columns to the existing ones. |
|
||||||
* @param string|array $columns additional columns to be grouped by. |
|
||||||
* Columns can be specified in either a string (e.g. "id, name") or an array (e.g. array('id', 'name')). |
|
||||||
* The method will automatically quote the column names unless a column contains some parenthesis |
|
||||||
* (which means the column contains a DB expression). |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
* @see groupBy() |
|
||||||
*/ |
|
||||||
public function addGroupBy($columns) |
|
||||||
{ |
|
||||||
if (empty($this->groupBy)) { |
|
||||||
$this->groupBy = $columns; |
|
||||||
} else { |
|
||||||
if (!is_array($this->groupBy)) { |
|
||||||
$this->groupBy = preg_split('/\s*,\s*/', trim($this->groupBy), -1, PREG_SPLIT_NO_EMPTY); |
|
||||||
} |
|
||||||
if (!is_array($columns)) { |
|
||||||
$columns = preg_split('/\s*,\s*/', trim($columns), -1, PREG_SPLIT_NO_EMPTY); |
|
||||||
} |
|
||||||
$this->groupBy = array_merge($this->groupBy, $columns); |
|
||||||
} |
|
||||||
return $this; |
|
||||||
} |
|
||||||
|
|
||||||
/** |
|
||||||
* Sets the HAVING part of the query. |
|
||||||
* @param string|array $condition the conditions to be put after HAVING. |
|
||||||
* Please refer to [[where()]] on how to specify this parameter. |
|
||||||
* @param array $params the parameters (name=>value) to be bound to the query. |
|
||||||
* Please refer to [[where()]] on alternative syntax of specifying anonymous parameters. |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
* @see andHaving() |
|
||||||
* @see orHaving() |
|
||||||
*/ |
|
||||||
public function having($condition, $params = array()) |
|
||||||
{ |
|
||||||
$this->having = $condition; |
|
||||||
if (!is_array($params)) { |
|
||||||
$params = func_get_args(); |
|
||||||
unset($params[0]); |
|
||||||
} |
|
||||||
$this->addParams($params); |
|
||||||
return $this; |
|
||||||
} |
|
||||||
|
|
||||||
/** |
|
||||||
* Adds an additional HAVING condition to the existing one. |
|
||||||
* The new condition and the existing one will be joined using the 'AND' operator. |
|
||||||
* @param string|array $condition the new HAVING condition. Please refer to [[where()]] |
|
||||||
* on how to specify this parameter. |
|
||||||
* @param array $params the parameters (name=>value) to be bound to the query. |
|
||||||
* Please refer to [[where()]] on alternative syntax of specifying anonymous parameters. |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
* @see having() |
|
||||||
* @see orHaving() |
|
||||||
*/ |
|
||||||
public function andHaving($condition, $params = array()) |
|
||||||
{ |
|
||||||
if ($this->having === null) { |
|
||||||
$this->having = $condition; |
|
||||||
} else { |
|
||||||
$this->having = array('and', $this->having, $condition); |
|
||||||
} |
|
||||||
if (!is_array($params)) { |
|
||||||
$params = func_get_args(); |
|
||||||
unset($params[0]); |
|
||||||
} |
|
||||||
$this->addParams($params); |
|
||||||
return $this; |
|
||||||
} |
|
||||||
|
|
||||||
/** |
|
||||||
* Adds an additional HAVING condition to the existing one. |
|
||||||
* The new condition and the existing one will be joined using the 'OR' operator. |
|
||||||
* @param string|array $condition the new HAVING condition. Please refer to [[where()]] |
|
||||||
* on how to specify this parameter. |
|
||||||
* @param array $params the parameters (name=>value) to be bound to the query. |
|
||||||
* Please refer to [[where()]] on alternative syntax of specifying anonymous parameters. |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
* @see having() |
|
||||||
* @see andHaving() |
|
||||||
*/ |
|
||||||
public function orHaving($condition, $params = array()) |
|
||||||
{ |
|
||||||
if ($this->having === null) { |
|
||||||
$this->having = $condition; |
|
||||||
} else { |
|
||||||
$this->having = array('or', $this->having, $condition); |
|
||||||
} |
|
||||||
if (!is_array($params)) { |
|
||||||
$params = func_get_args(); |
|
||||||
unset($params[0]); |
|
||||||
} |
|
||||||
$this->addParams($params); |
|
||||||
return $this; |
|
||||||
} |
|
||||||
|
|
||||||
/** |
|
||||||
* Sets the ORDER BY part of the query. |
|
||||||
* @param string|array $columns the columns (and the directions) to be ordered by. |
|
||||||
* Columns can be specified in either a string (e.g. "id ASC, name DESC") or an array (e.g. array('id ASC', 'name DESC')). |
|
||||||
* The method will automatically quote the column names unless a column contains some parenthesis |
|
||||||
* (which means the column contains a DB expression). |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
* @see addOrderBy() |
|
||||||
*/ |
|
||||||
public function orderBy($columns) |
|
||||||
{ |
|
||||||
$this->orderBy = $columns; |
|
||||||
return $this; |
|
||||||
} |
|
||||||
|
|
||||||
/** |
|
||||||
* Adds additional ORDER BY columns to the query. |
|
||||||
* @param string|array $columns the columns (and the directions) to be ordered by. |
|
||||||
* Columns can be specified in either a string (e.g. "id ASC, name DESC") or an array (e.g. array('id ASC', 'name DESC')). |
|
||||||
* The method will automatically quote the column names unless a column contains some parenthesis |
|
||||||
* (which means the column contains a DB expression). |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
* @see orderBy() |
|
||||||
*/ |
|
||||||
public function addOrderBy($columns) |
|
||||||
{ |
|
||||||
if (empty($this->orderBy)) { |
|
||||||
$this->orderBy = $columns; |
|
||||||
} else { |
|
||||||
if (!is_array($this->orderBy)) { |
|
||||||
$this->orderBy = preg_split('/\s*,\s*/', trim($this->orderBy), -1, PREG_SPLIT_NO_EMPTY); |
|
||||||
} |
|
||||||
if (!is_array($columns)) { |
|
||||||
$columns = preg_split('/\s*,\s*/', trim($columns), -1, PREG_SPLIT_NO_EMPTY); |
|
||||||
} |
|
||||||
$this->orderBy = array_merge($this->orderBy, $columns); |
|
||||||
} |
|
||||||
return $this; |
|
||||||
} |
|
||||||
|
|
||||||
/** |
|
||||||
* Sets the LIMIT part of the query. |
|
||||||
* @param integer $limit the limit |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
*/ |
|
||||||
public function limit($limit) |
|
||||||
{ |
|
||||||
$this->limit = $limit; |
|
||||||
return $this; |
|
||||||
} |
|
||||||
|
|
||||||
/** |
|
||||||
* Sets the OFFSET part of the query. |
|
||||||
* @param integer $offset the offset |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
*/ |
|
||||||
public function offset($offset) |
|
||||||
{ |
|
||||||
$this->offset = $offset; |
|
||||||
return $this; |
|
||||||
} |
|
||||||
|
|
||||||
/** |
|
||||||
* Appends a SQL statement using UNION operator. |
|
||||||
* @param string $sql the SQL statement to be appended using UNION |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
*/ |
|
||||||
public function union($sql) |
|
||||||
{ |
|
||||||
$this->union[] = $sql; |
|
||||||
return $this; |
|
||||||
} |
|
||||||
|
|
||||||
/** |
|
||||||
* Sets the parameters to be bound to the query. |
|
||||||
* @param array list of query parameter values indexed by parameter placeholders. |
|
||||||
* For example, `array(':name'=>'Dan', ':age'=>31)`. |
|
||||||
* Please refer to [[where()]] on alternative syntax of specifying anonymous parameters. |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
* @see addParams() |
|
||||||
*/ |
|
||||||
public function params($params) |
|
||||||
{ |
|
||||||
$this->params = $params; |
|
||||||
return $this; |
|
||||||
} |
|
||||||
|
|
||||||
/** |
|
||||||
* Adds additional parameters to be bound to the query. |
|
||||||
* @param array list of query parameter values indexed by parameter placeholders. |
|
||||||
* For example, `array(':name'=>'Dan', ':age'=>31)`. |
|
||||||
* Please refer to [[where()]] on alternative syntax of specifying anonymous parameters. |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
* @see params() |
|
||||||
*/ |
|
||||||
public function addParams($params) |
|
||||||
{ |
|
||||||
if ($this->params === null) { |
|
||||||
$this->params = $params; |
|
||||||
} else { |
|
||||||
foreach ($params as $name => $value) { |
|
||||||
if (is_integer($name)) { |
|
||||||
$this->params[] = $value; |
|
||||||
} else { |
|
||||||
$this->params[$name] = $value; |
|
||||||
} |
|
||||||
} |
|
||||||
} |
|
||||||
return $this; |
|
||||||
} |
|
||||||
|
|
||||||
/** |
|
||||||
* Merges this query with another one. |
|
||||||
* |
|
||||||
* The merging is done according to the following rules: |
|
||||||
* |
|
||||||
* - [[select]]: the union of both queries' [[select]] property values. |
|
||||||
* - [[selectOption]], [[distinct]], [[limit]], [[offset]]: the new query |
|
||||||
* takes precedence over this query. |
|
||||||
* - [[where]], [[having]]: the new query's corresponding property value |
|
||||||
* will be 'AND' together with the existing one. |
|
||||||
* - [[params]], [[orderBy]], [[groupBy]], [[join]], [[union]]: the new query's |
|
||||||
* corresponding property value will be appended to the existing one. |
|
||||||
* |
|
||||||
* In general, the merging makes the resulting query more restrictive and specific. |
|
||||||
* @param BaseQuery $query the new query to be merged with this query. |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
*/ |
|
||||||
public function mergeWith($query) |
|
||||||
{ |
|
||||||
if ($this->select !== $query->select) { |
|
||||||
if (empty($this->select)) { |
|
||||||
$this->select = $query->select; |
|
||||||
} elseif (!empty($query->select)) { |
|
||||||
$select1 = is_string($this->select) ? preg_split('/\s*,\s*/', trim($this->select), -1, PREG_SPLIT_NO_EMPTY) : $this->select; |
|
||||||
$select2 = is_string($query->select) ? preg_split('/\s*,\s*/', trim($query->select), -1, PREG_SPLIT_NO_EMPTY) : $query->select; |
|
||||||
$this->select = array_merge($select1, array_diff($select2, $select1)); |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
if ($query->selectOption !== null) { |
|
||||||
$this->selectOption = $query->selectOption; |
|
||||||
} |
|
||||||
|
|
||||||
if ($query->distinct !== null) { |
|
||||||
$this->distinct = $query->distinct; |
|
||||||
} |
|
||||||
|
|
||||||
if ($query->limit !== null) { |
|
||||||
$this->limit = $query->limit; |
|
||||||
} |
|
||||||
|
|
||||||
if ($query->offset !== null) { |
|
||||||
$this->offset = $query->offset; |
|
||||||
} |
|
||||||
|
|
||||||
if ($query->where !== null) { |
|
||||||
$this->andWhere($query->where); |
|
||||||
} |
|
||||||
|
|
||||||
if ($query->having !== null) { |
|
||||||
$this->andHaving($query->having); |
|
||||||
} |
|
||||||
|
|
||||||
if ($query->params !== null) { |
|
||||||
$this->addParams($query->params); |
|
||||||
} |
|
||||||
|
|
||||||
if ($query->orderBy !== null) { |
|
||||||
$this->addOrderBy($query->orderBy); |
|
||||||
} |
|
||||||
|
|
||||||
if ($query->groupBy !== null) { |
|
||||||
$this->addGroupBy($query->groupBy); |
|
||||||
} |
|
||||||
|
|
||||||
if ($query->join !== null) { |
|
||||||
if (empty($this->join)) { |
|
||||||
$this->join = $query->join; |
|
||||||
} else { |
|
||||||
if (!is_array($this->join)) { |
|
||||||
$this->join = array($this->join); |
|
||||||
} |
|
||||||
if (is_array($query->join)) { |
|
||||||
$this->join = array_merge($this->join, $query->join); |
|
||||||
} else { |
|
||||||
$this->join[] = $query->join; |
|
||||||
} |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
if ($query->union !== null) { |
|
||||||
if (empty($this->union)) { |
|
||||||
$this->union = $query->union; |
|
||||||
} else { |
|
||||||
if (!is_array($this->union)) { |
|
||||||
$this->union = array($this->union); |
|
||||||
} |
|
||||||
if (is_array($query->union)) { |
|
||||||
$this->union = array_merge($this->union, $query->union); |
|
||||||
} else { |
|
||||||
$this->union[] = $query->union; |
|
||||||
} |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
return $this; |
|
||||||
} |
|
||||||
|
|
||||||
/** |
|
||||||
* Resets the query object to its original state. |
|
||||||
* @return BaseQuery the query object itself |
|
||||||
*/ |
|
||||||
public function reset() |
|
||||||
{ |
|
||||||
foreach (get_object_vars($this) as $name => $value) { |
|
||||||
$this->$name = null; |
|
||||||
} |
|
||||||
return $this; |
|
||||||
} |
|
||||||
} |
|
||||||
Loading…
Reference in new issue