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