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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\db\cubrid;
use yii\base\InvalidArgumentException;
use yii\base\NotSupportedException;
use yii\db\Constraint;
use yii\db\Exception;
use yii\db\Expression;
/**
* QueryBuilder is the query builder for CUBRID databases (version 9.3.x and higher).
*
* @author Carsten Brandt <mail@cebe.cc>
* @since 2.0
*/
class QueryBuilder extends \yii\db\QueryBuilder
{
/**
* @var array mapping from abstract column types (keys) to physical column types (values).
*/
public $typeMap = [
Schema::TYPE_PK => 'int NOT NULL AUTO_INCREMENT PRIMARY KEY',
Schema::TYPE_UPK => 'int UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY',
Schema::TYPE_BIGPK => 'bigint NOT NULL AUTO_INCREMENT PRIMARY KEY',
Schema::TYPE_UBIGPK => 'bigint UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY',
Schema::TYPE_CHAR => 'char(1)',
Schema::TYPE_STRING => 'varchar(255)',
Schema::TYPE_TEXT => 'varchar',
Schema::TYPE_TINYINT => 'smallint',
Schema::TYPE_SMALLINT => 'smallint',
Schema::TYPE_INTEGER => 'int',
Schema::TYPE_BIGINT => 'bigint',
Schema::TYPE_FLOAT => 'float(7)',
Schema::TYPE_DOUBLE => 'double(15)',
Schema::TYPE_DECIMAL => 'decimal(10,0)',
Schema::TYPE_DATETIME => 'datetime',
Schema::TYPE_TIMESTAMP => 'timestamp',
Schema::TYPE_TIME => 'time',
Schema::TYPE_DATE => 'date',
Schema::TYPE_BINARY => 'blob',
Schema::TYPE_BOOLEAN => 'smallint',
Schema::TYPE_MONEY => 'decimal(19,4)',
];
/**
* {@inheritdoc}
*/
protected function defaultExpressionBuilders()
{
return array_merge(parent::defaultExpressionBuilders(), [
'yii\db\conditions\LikeCondition' => 'yii\db\cubrid\conditions\LikeConditionBuilder',
]);
}
/**
* {@inheritdoc}
* @see https://www.cubrid.org/manual/en/9.3.0/sql/query/merge.html
*/
public function upsert($table, $insertColumns, $updateColumns, &$params)
{
/** @var Constraint[] $constraints */
list($uniqueNames, $insertNames, $updateNames) = $this->prepareUpsertColumns($table, $insertColumns, $updateColumns, $constraints);
if (empty($uniqueNames)) {
return $this->insert($table, $insertColumns, $params);
}
$onCondition = ['or'];
$quotedTableName = $this->db->quoteTableName($table);
foreach ($constraints as $constraint) {
$constraintCondition = ['and'];
foreach ($constraint->columnNames as $name) {
$quotedName = $this->db->quoteColumnName($name);
$constraintCondition[] = "$quotedTableName.$quotedName=\"EXCLUDED\".$quotedName";
}
$onCondition[] = $constraintCondition;
}
$on = $this->buildCondition($onCondition, $params);
list(, $placeholders, $values, $params) = $this->prepareInsertValues($table, $insertColumns, $params);
$mergeSql = 'MERGE INTO ' . $this->db->quoteTableName($table) . ' '
. 'USING (' . (!empty($placeholders) ? 'VALUES (' . implode(', ', $placeholders) . ')' : ltrim($values, ' ')) . ') AS "EXCLUDED" (' . implode(', ', $insertNames) . ') '
. "ON ($on)";
$insertValues = [];
foreach ($insertNames as $name) {
$quotedName = $this->db->quoteColumnName($name);
if (strrpos($quotedName, '.') === false) {
$quotedName = '"EXCLUDED".' . $quotedName;
}
$insertValues[] = $quotedName;
}
$insertSql = 'INSERT (' . implode(', ', $insertNames) . ')'
. ' VALUES (' . implode(', ', $insertValues) . ')';
if ($updateColumns === false) {
return "$mergeSql WHEN NOT MATCHED THEN $insertSql";
}
if ($updateColumns === true) {
$updateColumns = [];
foreach ($updateNames as $name) {
$quotedName = $this->db->quoteColumnName($name);
if (strrpos($quotedName, '.') === false) {
$quotedName = '"EXCLUDED".' . $quotedName;
}
$updateColumns[$name] = new Expression($quotedName);
}
}
list($updates, $params) = $this->prepareUpdateSets($table, $updateColumns, $params);
$updateSql = 'UPDATE SET ' . implode(', ', $updates);
return "$mergeSql WHEN MATCHED THEN $updateSql WHEN NOT MATCHED THEN $insertSql";
}
/**
* Creates a SQL statement for resetting the sequence value of a table's primary key.
* The sequence will be reset such that the primary key of the next new row inserted
* will have the specified value or 1.
* @param string $tableName the name of the table whose primary key sequence will be reset
* @param mixed $value the value for the primary key of the next new row inserted. If this is not set,
* the next new row's primary key will have a value 1.
* @return string the SQL statement for resetting sequence
* @throws InvalidArgumentException if the table does not exist or there is no sequence associated with the table.
*/
public function resetSequence($tableName, $value = null)
{
$table = $this->db->getTableSchema($tableName);
if ($table !== null && $table->sequenceName !== null) {
$tableName = $this->db->quoteTableName($tableName);
if ($value === null) {
$key = reset($table->primaryKey);
$value = (int) $this->db->createCommand("SELECT MAX(`$key`) FROM " . $this->db->schema->quoteTableName($tableName))->queryScalar() + 1;
} else {
$value = (int) $value;
}
return 'ALTER TABLE ' . $this->db->schema->quoteTableName($tableName) . " AUTO_INCREMENT=$value;";
} elseif ($table === null) {
throw new InvalidArgumentException("Table not found: $tableName");
}
throw new InvalidArgumentException("There is not sequence associated with table '$tableName'.");
}
/**
* {@inheritdoc}
*/
public function buildLimit($limit, $offset)
{
$sql = '';
// limit is not optional in CUBRID
// http://www.cubrid.org/manual/90/en/LIMIT%20Clause
// "You can specify a very big integer for row_count to display to the last row, starting from a specific row."
if ($this->hasLimit($limit)) {
$sql = 'LIMIT ' . $limit;
if ($this->hasOffset($offset)) {
$sql .= ' OFFSET ' . $offset;
}
} elseif ($this->hasOffset($offset)) {
$sql = "LIMIT 9223372036854775807 OFFSET $offset"; // 2^63-1
}
return $sql;
}
/**
* {@inheritdoc}
* @since 2.0.8
*/
public function selectExists($rawSql)
{
return 'SELECT CASE WHEN EXISTS(' . $rawSql . ') THEN 1 ELSE 0 END';
}
/**
* {@inheritdoc}
* @see http://www.cubrid.org/manual/93/en/sql/schema/table.html#drop-index-clause
*/
public function dropIndex($name, $table)
{
/** @var Schema $schema */
$schema = $this->db->getSchema();
foreach ($schema->getTableUniques($table) as $unique) {
if ($unique->name === $name) {
return $this->dropUnique($name, $table);
}
}
return 'DROP INDEX ' . $this->db->quoteTableName($name) . ' ON ' . $this->db->quoteTableName($table);
}
/**
* {@inheritdoc}
* @throws NotSupportedException this is not supported by CUBRID.
*/
public function addCheck($name, $table, $expression)
{
throw new NotSupportedException(__METHOD__ . ' is not supported by CUBRID.');
}
/**
* {@inheritdoc}
* @throws NotSupportedException this is not supported by CUBRID.
*/
public function dropCheck($name, $table)
{
throw new NotSupportedException(__METHOD__ . ' is not supported by CUBRID.');
}
/**
* {@inheritdoc}
* @since 2.0.8
*/
public function addCommentOnColumn($table, $column, $comment)
{
$definition = $this->getColumnDefinition($table, $column);
$definition = trim(preg_replace("/COMMENT '(.*?)'/i", '', $definition));
return 'ALTER TABLE ' . $this->db->quoteTableName($table)
. ' CHANGE ' . $this->db->quoteColumnName($column)
. ' ' . $this->db->quoteColumnName($column)
. (empty($definition) ? '' : ' ' . $definition)
. ' COMMENT ' . $this->db->quoteValue($comment);
}
/**
* {@inheritdoc}
* @since 2.0.8
*/
public function addCommentOnTable($table, $comment)
{
return 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' COMMENT ' . $this->db->quoteValue($comment);
}
/**
* {@inheritdoc}
* @since 2.0.8
*/
public function dropCommentFromColumn($table, $column)
{
return $this->addCommentOnColumn($table, $column, '');
}
/**
* {@inheritdoc}
* @since 2.0.8
*/
public function dropCommentFromTable($table)
{
return $this->addCommentOnTable($table, '');
}
/**
* Gets column definition.
*
* @param string $table table name
* @param string $column column name
* @return null|string the column definition
* @throws Exception in case when table does not contain column
* @since 2.0.8
*/
private function getColumnDefinition($table, $column)
{
$row = $this->db->createCommand('SHOW CREATE TABLE ' . $this->db->quoteTableName($table))->queryOne();
if ($row === false) {
throw new Exception("Unable to find column '$column' in table '$table'.");
}
if (isset($row['Create Table'])) {
$sql = $row['Create Table'];
} else {
$row = array_values($row);
$sql = $row[1];
}
$sql = preg_replace('/^[^(]+\((.*)\).*$/', '\1', $sql);
$sql = str_replace(', [', ",\n[", $sql);
if (preg_match_all('/^\s*\[(.*?)\]\s+(.*?),?$/m', $sql, $matches)) {
foreach ($matches[1] as $i => $c) {
if ($c === $column) {
return $matches[2][$i];
}
}
}
return null;
}
}
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