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713 lines
26 KiB
713 lines
26 KiB
<?php |
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/** |
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* This file contains the Command class. |
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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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use yii\db\Exception; |
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/** |
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* QueryBuilder builds a SQL statement based on the specification given as a [[Query]] object. |
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* |
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* QueryBuilder is often used behind the scenes by [[Query]] to build a DBMS-dependent SQL statement |
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* from a [[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 QueryBuilder extends \yii\base\Object |
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{ |
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/** |
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* @var array the abstract column types mapped to physical column types. |
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* This is mainly used to support creating/modifying tables using DB-independent data type specifications. |
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* Child classes should override this property to declare supported type mappings. |
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*/ |
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public $typeMap = array(); |
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/** |
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* @var Connection the database connection. |
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*/ |
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public $connection; |
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/** |
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* @var Driver the database driver |
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*/ |
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public $driver; |
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/** |
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* @var string the separator between different fragments of a SQL statement. |
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* Defaults to an empty space. This is mainly used by [[build()]] when generating a SQL statement. |
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*/ |
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public $separator = " "; |
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/** |
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* @var Query the Query object. This is set when calling [[build()]] to generate a non-SELECT SQL statement. |
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*/ |
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private $_query; |
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/** |
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* Constructor. |
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* @param Connection $connection the database connection. |
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*/ |
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public function __construct($connection) |
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{ |
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$this->connection = $connection; |
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$this->driver = $connection->getDriver(); |
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} |
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/** |
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* Generates a SQL statement from a [[Query]] object. |
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* Note that when generating SQL statements for INSERT and UPDATE queries, |
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* the query object's [[Query::params]] property may be appended with new parameters. |
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* @param Query $query the [[Query]] object from which the SQL statement will be generated |
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* @return string the generated SQL statement |
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*/ |
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public function build($query) |
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{ |
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if ($query->operation !== null) { |
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// non-SELECT query |
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$this->_query = $query; |
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$method = array_shift($query->operation); |
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$sql = call_user_func_array(array($this, $method), $query->operation); |
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$this->_query = null; |
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return $sql; |
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} else { |
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// SELECT query |
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$clauses = array( |
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$this->buildSelect($query), |
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$this->buildFrom($query), |
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$this->buildJoin($query), |
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$this->buildWhere($query), |
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$this->buildGroupBy($query), |
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$this->buildHaving($query), |
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$this->buildUnion($query), |
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$this->buildOrderBy($query), |
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$this->buildLimit($query), |
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); |
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return implode($this->separator, array_filter($clauses)); |
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} |
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} |
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/** |
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* Creates and executes an INSERT SQL statement. |
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* The method will properly escape the column names, and bind the values to be inserted. |
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* @param string $table the table that new rows will be inserted into. |
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* @param array $columns the column data (name=>value) to be inserted into the table. |
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* @param array $params the parameters to be bound to the query. This method will modify |
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* this parameter by appending new parameters to be bound to the query. |
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* @return integer number of rows affected by the execution. |
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*/ |
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public function insert($table, $columns, &$params = array()) |
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{ |
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$names = array(); |
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$placeholders = array(); |
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$count = 0; |
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foreach ($columns as $name => $value) { |
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$names[] = $this->driver->quoteColumnName($name); |
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if ($value instanceof Expression) { |
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$placeholders[] = $value->expression; |
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foreach ($value->params as $n => $v) { |
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$params[$n] = $v; |
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} |
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} else { |
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$placeholders[] = ':p' . $count; |
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$params[':p' . $count] = $value; |
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$count++; |
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} |
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} |
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if ($this->_query instanceof Query) { |
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$this->_query->addParams($params); |
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} |
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return 'INSERT INTO ' . $this->driver->quoteTableName($table) |
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. ' (' . implode(', ', $names) . ') VALUES (' |
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. implode(', ', $placeholders) . ')'; |
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} |
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/** |
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* Creates and executes an UPDATE SQL statement. |
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* The method will properly escape the column names and bind the values to be updated. |
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* @param string $table the table to be updated. |
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* @param array $columns the column data (name=>value) to be updated. |
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* @param mixed $condition the condition that will be put in the WHERE part. Please |
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* refer to [[Query::where()]] on how to specify condition. |
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* @param array $params the parameters to be bound to the query. This method will modify |
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* this parameter by appending new parameters to be bound to the query. |
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* @return integer number of rows affected by the execution. |
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*/ |
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public function update($table, $columns, $condition = '', &$params = array()) |
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{ |
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$lines = array(); |
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$count = 0; |
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foreach ($columns as $name => $value) { |
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if ($value instanceof Expression) { |
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$lines[] = $this->driver->quoteSimpleColumnName($name) . '=' . $value->expression; |
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foreach ($value->params as $n => $v) { |
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$params[$n] = $v; |
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} |
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} else { |
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$lines[] = $this->driver->quoteSimpleColumnName($name) . '=:p' . $count; |
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$params[':p' . $count] = $value; |
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$count++; |
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} |
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} |
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if ($this->_query instanceof Query) { |
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$this->_query->addParams($params); |
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} |
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$sql = 'UPDATE ' . $this->driver->quoteTableName($table) . ' SET ' . implode(', ', $lines); |
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if (($where = $this->buildCondition($condition)) != '') { |
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$sql .= ' WHERE ' . $where; |
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} |
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return $sql; |
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} |
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/** |
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* Creates and executes a DELETE SQL statement. |
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* @param string $table the table where the data will be deleted from. |
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* @param mixed $condition the condition that will be put in the WHERE part. Please |
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* refer to [[Query::where()]] on how to specify condition. |
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* @return integer number of rows affected by the execution. |
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*/ |
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public function delete($table, $condition = '') |
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{ |
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$sql = 'DELETE FROM ' . $this->driver->quoteTableName($table); |
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if (($where = $this->buildCondition($condition)) != '') { |
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$sql .= ' WHERE ' . $where; |
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} |
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return $sql; |
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} |
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/** |
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* Builds a SQL statement for creating a new DB table. |
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* |
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* The columns in the new table should be specified as name-definition pairs (e.g. 'name'=>'string'), |
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* where name stands for a column name which will be properly quoted by the method, and definition |
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* stands for the column type which can contain an abstract DB type. |
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* The [[getColumnType()]] method will be invoked to convert any abstract type into a physical one. |
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* |
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* If a column is specified with definition only (e.g. 'PRIMARY KEY (name, type)'), it will be directly |
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* inserted into the generated SQL. |
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* |
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* @param string $table the name of the table to be created. The name will be properly quoted by the method. |
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* @param array $columns the columns (name=>definition) in the new table. |
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* @param string $options additional SQL fragment that will be appended to the generated SQL. |
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* @return string the SQL statement for creating a new DB table. |
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*/ |
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public function createTable($table, $columns, $options = null) |
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{ |
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$cols = array(); |
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foreach ($columns as $name => $type) { |
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if (is_string($name)) { |
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$cols[] = "\t" . $this->driver->quoteColumnName($name) . ' ' . $this->driver->getColumnType($type); |
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} else |
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{ |
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$cols[] = "\t" . $type; |
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} |
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} |
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$sql = "CREATE TABLE " . $this->driver->quoteTableName($table) . " (\n" . implode(",\n", $cols) . "\n)"; |
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return $options === null ? $sql : $sql . ' ' . $options; |
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} |
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/** |
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* Builds a SQL statement for renaming a DB table. |
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* @param string $table the table to be renamed. The name will be properly quoted by the method. |
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* @param string $newName the new table name. The name will be properly quoted by the method. |
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* @return string the SQL statement for renaming a DB table. |
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*/ |
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public function renameTable($table, $newName) |
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{ |
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return 'RENAME TABLE ' . $this->driver->quoteTableName($table) . ' TO ' . $this->driver->quoteTableName($newName); |
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} |
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/** |
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* Builds a SQL statement for dropping a DB table. |
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* @param string $table the table to be dropped. The name will be properly quoted by the method. |
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* @return string the SQL statement for dropping a DB table. |
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*/ |
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public function dropTable($table) |
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{ |
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return "DROP TABLE " . $this->driver->quoteTableName($table); |
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} |
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/** |
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* Builds a SQL statement for truncating a DB table. |
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* @param string $table the table to be truncated. The name will be properly quoted by the method. |
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* @return string the SQL statement for truncating a DB table. |
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*/ |
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public function truncateTable($table) |
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{ |
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return "TRUNCATE TABLE " . $this->driver->quoteTableName($table); |
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} |
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/** |
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* Builds a SQL statement for adding a new DB column. |
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* @param string $table the table that the new column will be added to. The table name will be properly quoted by the method. |
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* @param string $column the name of the new column. The name will be properly quoted by the method. |
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* @param string $type the column type. The [[getColumnType()]] method will be invoked to convert abstract column type (if any) |
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* into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL. |
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* For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'. |
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* @return string the SQL statement for adding a new column. |
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*/ |
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public function addColumn($table, $column, $type) |
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{ |
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return 'ALTER TABLE ' . $this->driver->quoteTableName($table) |
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. ' ADD ' . $this->driver->quoteColumnName($column) . ' ' |
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. $this->getColumnType($type); |
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} |
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/** |
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* Builds a SQL statement for dropping a DB column. |
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* @param string $table the table whose column is to be dropped. The name will be properly quoted by the method. |
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* @param string $column the name of the column to be dropped. The name will be properly quoted by the method. |
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* @return string the SQL statement for dropping a DB column. |
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*/ |
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public function dropColumn($table, $column) |
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{ |
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return "ALTER TABLE " . $this->driver->quoteTableName($table) |
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. " DROP COLUMN " . $this->driver->quoteSimpleColumnName($column); |
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} |
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/** |
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* Builds a SQL statement for renaming a column. |
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* @param string $table the table whose column is to be renamed. The name will be properly quoted by the method. |
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* @param string $name the old name of the column. The name will be properly quoted by the method. |
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* @param string $newName the new name of the column. The name will be properly quoted by the method. |
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* @return string the SQL statement for renaming a DB column. |
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*/ |
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public function renameColumn($table, $name, $newName) |
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{ |
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return "ALTER TABLE " . $this->driver->quoteTableName($table) |
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. " RENAME COLUMN " . $this->driver->quoteSimpleColumnName($name) |
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. " TO " . $this->driver->quoteSimpleColumnName($newName); |
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} |
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/** |
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* Builds a SQL statement for changing the definition of a column. |
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* @param string $table the table whose column is to be changed. The table name will be properly quoted by the method. |
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* @param string $column the name of the column to be changed. The name will be properly quoted by the method. |
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* @param string $type the new column type. The [[getColumnType]] method will be invoked to convert abstract column type (if any) |
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* into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL. |
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* For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'. |
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* @return string the SQL statement for changing the definition of a column. |
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*/ |
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public function alterColumn($table, $column, $type) |
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{ |
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return 'ALTER TABLE ' . $this->driver->quoteTableName($table) . ' CHANGE ' |
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. $this->driver->quoteSimpleColumnName($column) . ' ' |
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. $this->driver->quoteSimpleColumnName($column) . ' ' |
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. $this->getColumnType($type); |
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} |
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/** |
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* Builds a SQL statement for adding a foreign key constraint to an existing table. |
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* The method will properly quote the table and column names. |
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* @param string $name the name of the foreign key constraint. |
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* @param string $table the table that the foreign key constraint will be added to. |
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* @param string $columns the name of the column to that the constraint will be added on. If there are multiple columns, separate them with commas. |
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* @param string $refTable the table that the foreign key references to. |
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* @param string $refColumns the name of the column that the foreign key references to. If there are multiple columns, separate them with commas. |
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* @param string $delete the ON DELETE option. Most DBMS support these options: RESTRICT, CASCADE, NO ACTION, SET DEFAULT, SET NULL |
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* @param string $update the ON UPDATE option. Most DBMS support these options: RESTRICT, CASCADE, NO ACTION, SET DEFAULT, SET NULL |
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* @return string the SQL statement for adding a foreign key constraint to an existing table. |
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*/ |
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public function addForeignKey($name, $table, $columns, $refTable, $refColumns, $delete = null, $update = null) |
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{ |
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$columns = preg_split('/\s*,\s*/', $columns, -1, PREG_SPLIT_NO_EMPTY); |
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foreach ($columns as $i => $col) { |
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$columns[$i] = $this->driver->quoteColumnName($col); |
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} |
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$refColumns = preg_split('/\s*,\s*/', $refColumns, -1, PREG_SPLIT_NO_EMPTY); |
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foreach ($refColumns as $i => $col) { |
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$refColumns[$i] = $this->driver->quoteColumnName($col); |
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} |
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$sql = 'ALTER TABLE ' . $this->driver->quoteTableName($table) |
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. ' ADD CONSTRAINT ' . $this->driver->quoteColumnName($name) |
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. ' FOREIGN KEY (' . implode(', ', $columns) . ')' |
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. ' REFERENCES ' . $this->driver->quoteTableName($refTable) |
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. ' (' . implode(', ', $refColumns) . ')'; |
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if ($delete !== null) { |
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$sql .= ' ON DELETE ' . $delete; |
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} |
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if ($update !== null) { |
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$sql .= ' ON UPDATE ' . $update; |
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} |
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return $sql; |
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} |
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/** |
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* Builds a SQL statement for dropping a foreign key constraint. |
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* @param string $name the name of the foreign key constraint to be dropped. The name will be properly quoted by the method. |
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* @param string $table the table whose foreign is to be dropped. The name will be properly quoted by the method. |
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* @return string the SQL statement for dropping a foreign key constraint. |
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*/ |
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public function dropForeignKey($name, $table) |
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{ |
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return 'ALTER TABLE ' . $this->driver->quoteTableName($table) |
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. ' DROP CONSTRAINT ' . $this->driver->quoteColumnName($name); |
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} |
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/** |
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* Builds a SQL statement for creating a new index. |
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* @param string $name the name of the index. The name will be properly quoted by the method. |
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* @param string $table the table that the new index will be created for. The table name will be properly quoted by the method. |
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* @param string $column the column(s) that should be included in the index. If there are multiple columns, please separate them |
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* by commas. Each column name will be properly quoted by the method, unless a parenthesis is found in the name. |
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* @param boolean $unique whether to add UNIQUE constraint on the created index. |
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* @return string the SQL statement for creating a new index. |
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*/ |
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public function createIndex($name, $table, $column, $unique = false) |
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{ |
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$cols = array(); |
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$columns = preg_split('/\s*,\s*/', $column, -1, PREG_SPLIT_NO_EMPTY); |
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foreach ($columns as $col) |
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{ |
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if (strpos($col, '(') !== false) { |
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$cols[] = $col; |
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} else |
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{ |
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$cols[] = $this->driver->quoteColumnName($col); |
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} |
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} |
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return ($unique ? 'CREATE UNIQUE INDEX ' : 'CREATE INDEX ') |
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. $this->driver->quoteTableName($name) . ' ON ' |
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. $this->driver->quoteTableName($table) . ' (' . implode(', ', $cols) . ')'; |
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} |
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/** |
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* Builds a SQL statement for dropping an index. |
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* @param string $name the name of the index to be dropped. The name will be properly quoted by the method. |
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* @param string $table the table whose index is to be dropped. The name will be properly quoted by the method. |
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* @return string the SQL statement for dropping an index. |
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*/ |
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public function dropIndex($name, $table) |
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{ |
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return 'DROP INDEX ' . $this->driver->quoteTableName($name) . ' ON ' . $this->driver->quoteTableName($table); |
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} |
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/** |
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* Resets the sequence value of a table's primary key. |
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* The sequence will be reset such that the primary key of the next new row inserted |
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* will have the specified value or 1. |
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* @param CDbTableSchema $table the table schema whose primary key sequence will be reset |
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* @param mixed $value the value for the primary key of the next new row inserted. If this is not set, |
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* the next new row's primary key will have a value 1. |
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*/ |
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public function resetSequence($table, $value = null) |
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{ |
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} |
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/** |
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* Enables or disables integrity check. |
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* @param boolean $check whether to turn on or off the integrity check. |
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* @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema. |
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*/ |
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public function checkIntegrity($check = true, $schema = '') |
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{ |
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} |
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|
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/** |
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* Converts an abstract column type into a physical column type. |
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* The conversion is done using the type map specified in [[typeMap]]. |
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* These abstract column types are supported (using MySQL as example to explain the corresponding |
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* physical types): |
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* <ul> |
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* <li>pk: an auto-incremental primary key type, will be converted into "int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY"</li> |
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* <li>string: string type, will be converted into "varchar(255)"</li> |
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* <li>text: a long string type, will be converted into "text"</li> |
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* <li>integer: integer type, will be converted into "int(11)"</li> |
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* <li>boolean: boolean type, will be converted into "tinyint(1)"</li> |
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* <li>float: float number type, will be converted into "float"</li> |
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* <li>decimal: decimal number type, will be converted into "decimal"</li> |
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* <li>datetime: datetime type, will be converted into "datetime"</li> |
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* <li>timestamp: timestamp type, will be converted into "timestamp"</li> |
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* <li>time: time type, will be converted into "time"</li> |
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* <li>date: date type, will be converted into "date"</li> |
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* <li>binary: binary data type, will be converted into "blob"</li> |
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* </ul> |
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* |
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* If the abstract type contains two or more parts separated by spaces (e.g. "string NOT NULL"), then only |
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* the first part will be converted, and the rest of the parts will be appended to the conversion result. |
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* For example, 'string NOT NULL' is converted to 'varchar(255) NOT NULL'. |
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* @param string $type abstract column type |
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* @return string physical column type. |
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*/ |
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public function getColumnType($type) |
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{ |
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if (isset($this->typeMap[$type])) { |
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return $this->typeMap[$type]; |
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} elseif (($pos = strpos($type, ' ')) !== false) { |
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$t = substr($type, 0, $pos); |
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return (isset($this->typeMap[$t]) ? $this->typeMap[$t] : $t) . substr($type, $pos); |
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} else { |
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return $type; |
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} |
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} |
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|
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protected function buildSelect($query) |
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{ |
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$select = $query->distinct ? 'SELECT DISTINCT' : 'SELECT'; |
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if ($query->selectOption != '') { |
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$select .= ' ' . $query->selectOption; |
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} |
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|
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$columns = $query->select; |
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if (empty($columns)) { |
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return $select . ' *'; |
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} |
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|
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if (is_string($columns)) { |
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if (strpos($columns, '(') !== false) { |
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return $select . ' ' . $columns; |
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} |
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$columns = preg_split('/\s*,\s*/', trim($columns), -1, PREG_SPLIT_NO_EMPTY); |
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} |
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|
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foreach ($columns as $i => $column) { |
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if (is_object($column)) { |
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$columns[$i] = (string)$column; |
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} elseif (strpos($column, '(') === false) { |
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if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)([\w\-\.])$/', $column, $matches)) { |
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$columns[$i] = $this->connection->quoteColumnName($matches[1]) . ' AS ' . $this->driver->quoteSimpleColumnName($matches[2]); |
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} else { |
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$columns[$i] = $this->connection->quoteColumnName($column); |
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} |
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} |
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} |
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|
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return $select . ' ' . implode(', ', $columns); |
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} |
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|
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protected function buildFrom($query) |
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{ |
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if (empty($query->from)) { |
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return ''; |
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} |
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|
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$tables = $query->from; |
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if (is_string($tables) && strpos($tables, '(') !== false) { |
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return 'FROM ' . $tables; |
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} |
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|
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if (!is_array($tables)) { |
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$tables = preg_split('/\s*,\s*/', trim($tables), -1, PREG_SPLIT_NO_EMPTY); |
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} |
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foreach ($tables as $i => $table) { |
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if (strpos($table, '(') === false) { |
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if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)(.*)$/i', $table, $matches)) { // with alias |
|
$tables[$i] = $this->connection->quoteTableName($matches[1]) . ' ' . $this->connection->quoteTableName($matches[2]); |
|
} else { |
|
$tables[$i] = $this->connection->quoteTableName($table); |
|
} |
|
} |
|
} |
|
|
|
return 'FROM ' . implode(', ', $tables); |
|
} |
|
|
|
protected function buildJoin($query) |
|
{ |
|
$joins = $query->join; |
|
if (empty($joins)) { |
|
return ''; |
|
} |
|
if (is_string($joins)) { |
|
return $joins; |
|
} |
|
|
|
foreach ($joins as $i => $join) { |
|
if (is_array($join)) { // join type, table name, on-condition |
|
if (isset($join[0], $join[1])) { |
|
$table = $join[1]; |
|
if (strpos($table, '(') === false) { |
|
if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)(.*)$/', $table, $matches)) { // with alias |
|
$table = $this->connection->quoteTableName($matches[1]) . ' ' . $this->connection->quoteTableName($matches[2]); |
|
} else { |
|
$table = $this->connection->quoteTableName($table); |
|
} |
|
} |
|
$joins[$i] = strtoupper($join[0]) . ' ' . $table; |
|
if (isset($join[2])) { // join condition |
|
$joins[$i] .= ' ON ' . $this->buildCondition($join[2]); |
|
} |
|
} else { |
|
throw new Exception('The join clause may be specified as an array of at least two elements.'); |
|
} |
|
} |
|
} |
|
|
|
return implode("\n", $joins); |
|
} |
|
|
|
protected function buildWhere($query) |
|
{ |
|
$where = $this->buildCondition($query->where); |
|
return empty($where) ? '' : 'WHERE ' . $where; |
|
} |
|
|
|
protected function buildGroupBy($query) |
|
{ |
|
$columns = $query->groupBy; |
|
if (empty($columns)) { |
|
return ''; |
|
} |
|
if (is_string($columns) && strpos($columns, '(') !== false) { |
|
return 'GROUP BY ' . $columns; |
|
} |
|
|
|
if (!is_array($columns)) { |
|
$columns = preg_split('/\s*,\s*/', trim($columns), -1, PREG_SPLIT_NO_EMPTY); |
|
} |
|
foreach ($columns as $i => $column) { |
|
if (is_object($column)) { |
|
$columns[$i] = (string)$column; |
|
} elseif (strpos($column, '(') === false) { |
|
$columns[$i] = $this->connection->quoteColumnName($column); |
|
} |
|
} |
|
return 'GROUP BY ' . implode(', ', $columns); |
|
} |
|
|
|
protected function buildHaving($query) |
|
{ |
|
$having = $this->buildCondition($query->having); |
|
return empty($having) ? '' : 'HAVING ' . $having; |
|
} |
|
|
|
protected function buildOrderBy($query) |
|
{ |
|
$columns = $query->orderBy; |
|
if (empty($columns)) { |
|
return ''; |
|
} |
|
if (is_string($columns) && strpos($columns, '(') !== false) { |
|
return 'ORDER BY ' . $columns; |
|
} |
|
|
|
if (!is_array($columns)) { |
|
$columns = preg_split('/\s*,\s*/', trim($columns), -1, PREG_SPLIT_NO_EMPTY); |
|
} |
|
foreach ($columns as $i => $column) { |
|
if (is_object($column)) { |
|
$columns[$i] = (string)$column; |
|
} elseif (strpos($column, '(') === false) { |
|
if (preg_match('/^(.*?)\s+(asc|desc)$/i', $column, $matches)) { |
|
$columns[$i] = $this->connection->quoteColumnName($matches[1]) . ' ' . strtoupper($matches[2]); |
|
} else { |
|
$columns[$i] = $this->connection->quoteColumnName($column); |
|
} |
|
} |
|
} |
|
return 'ORDER BY ' . implode(', ', $columns); |
|
} |
|
|
|
protected function buildLimit($query) |
|
{ |
|
$sql = ''; |
|
if ($query->limit !== null && $query->limit >= 0) { |
|
$sql = 'LIMIT ' . (int)$query->limit; |
|
} |
|
if ($query->offset > 0) { |
|
$sql .= ' OFFSET ' . (int)$query->offset; |
|
} |
|
return ltrim($sql); |
|
} |
|
|
|
protected function buildUnion($query) |
|
{ |
|
$unions = $query->union; |
|
if (empty($unions)) { |
|
return ''; |
|
} |
|
if (!is_array($unions)) { |
|
$unions = array($unions); |
|
} |
|
foreach ($unions as $i => $union) { |
|
if ($union instanceof Query) { |
|
$unions[$i] = $union->getSql($this->connection); |
|
} |
|
} |
|
return "UNION (\n" . implode("\n) UNION (\n", $unions) . "\n)"; |
|
} |
|
|
|
protected function buildCondition($condition) |
|
{ |
|
if (!is_array($condition)) { |
|
return $condition; |
|
} elseif ($condition === array()) { |
|
return ''; |
|
} |
|
|
|
$n = count($condition); |
|
$operator = strtoupper($condition[0]); |
|
if ($operator === 'OR' || $operator === 'AND') { |
|
$parts = array(); |
|
for ($i = 1; $i < $n; ++$i) { |
|
$part = $this->buildCondition($condition[$i]); |
|
if ($part !== '') { |
|
$parts[] = '(' . $part . ')'; |
|
} |
|
} |
|
return $parts === array() ? '' : implode(' ' . $operator . ' ', $parts); |
|
} |
|
|
|
if (!isset($condition[1], $condition[2])) { |
|
throw new Exception("Operator $operator requires at least two operands."); |
|
} |
|
|
|
$column = $condition[1]; |
|
if (strpos($column, '(') === false) { |
|
$column = $this->connection->quoteColumnName($column); |
|
} |
|
|
|
if ($operator === 'BETWEEN' || $operator === 'NOT BETWEEN') { |
|
if (!isset($condition[3])) { |
|
throw new Exception("Operator $operator requires three operands."); |
|
} |
|
$value1 = is_string($condition[2]) ? $this->connection->quoteValue($condition[2]) : (string)$condition[2]; |
|
$value2 = is_string($condition[3]) ? $this->connection->quoteValue($condition[3]) : (string)$condition[3]; |
|
return "$column $operator $value1 AND $value2"; |
|
} |
|
|
|
$values = $condition[2]; |
|
if (!is_array($values)) { |
|
$values = array($values); |
|
} |
|
|
|
if ($operator === 'IN' || $operator === 'NOT IN') { |
|
if ($values === array()) { |
|
return $operator === 'IN' ? '0=1' : ''; |
|
} |
|
foreach ($values as $i => $value) { |
|
if (is_string($value)) { |
|
$values[$i] = $this->connection->quoteValue($value); |
|
} else { |
|
$values[$i] = (string)$value; |
|
} |
|
} |
|
return $column . ' ' . $operator . ' (' . implode(', ', $values) . ')'; |
|
} |
|
|
|
if ($operator === 'LIKE' || $operator === 'NOT LIKE' || $operator === 'OR LIKE' || $operator === 'OR NOT LIKE') { |
|
if ($values === array()) { |
|
return $operator === 'LIKE' || $operator === 'OR LIKE' ? '0=1' : ''; |
|
} |
|
|
|
if ($operator === 'LIKE' || $operator === 'NOT LIKE') { |
|
$andor = ' AND '; |
|
} else { |
|
$andor = ' OR '; |
|
$operator = $operator === 'OR LIKE' ? 'LIKE' : 'NOT LIKE'; |
|
} |
|
$expressions = array(); |
|
foreach ($values as $value) { |
|
$expressions[] = $column . ' ' . $operator . ' ' . $this->connection->quoteValue($value); |
|
} |
|
return implode($andor, $expressions); |
|
} |
|
|
|
throw new Exception('Unknown operator: ' . $operator); |
|
} |
|
}
|
|
|