mirror of
https://github.com/yiisoft/yii2.git
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549 lines
21 KiB
PHP
549 lines
21 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\sqlite;
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use yii\base\InvalidArgumentException;
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use yii\base\NotSupportedException;
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use yii\db\Connection;
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use yii\db\Constraint;
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use yii\db\Expression;
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use yii\db\ExpressionInterface;
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use yii\db\Query;
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use yii\helpers\StringHelper;
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/**
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* QueryBuilder is the query builder for SQLite databases.
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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\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 => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
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Schema::TYPE_UPK => 'integer UNSIGNED PRIMARY KEY AUTOINCREMENT NOT NULL',
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Schema::TYPE_BIGPK => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
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Schema::TYPE_UBIGPK => 'integer UNSIGNED PRIMARY KEY AUTOINCREMENT NOT NULL',
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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 => 'text',
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Schema::TYPE_TINYINT => 'tinyint',
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Schema::TYPE_SMALLINT => 'smallint',
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Schema::TYPE_INTEGER => 'integer',
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Schema::TYPE_BIGINT => 'bigint',
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Schema::TYPE_FLOAT => 'float',
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Schema::TYPE_DOUBLE => 'double',
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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 => 'boolean',
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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\sqlite\conditions\LikeConditionBuilder',
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'yii\db\conditions\InCondition' => 'yii\db\sqlite\conditions\InConditionBuilder',
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]);
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}
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/**
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* {@inheritdoc}
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* @see https://stackoverflow.com/questions/15277373/sqlite-upsert-update-or-insert/15277374#15277374
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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, $params);
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}
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if ($updateNames === []) {
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// there are no columns to update
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$updateColumns = false;
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}
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list(, $placeholders, $values, $params) = $this->prepareInsertValues($table, $insertColumns, $params);
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$insertSql = 'INSERT OR IGNORE INTO ' . $this->db->quoteTableName($table)
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. (!empty($insertNames) ? ' (' . implode(', ', $insertNames) . ')' : '')
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. (!empty($placeholders) ? ' VALUES (' . implode(', ', $placeholders) . ')' : $values);
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if ($updateColumns === false) {
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return $insertSql;
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}
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$updateCondition = ['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=(SELECT $quotedName FROM `EXCLUDED`)";
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}
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$updateCondition[] = $constraintCondition;
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}
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if ($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 = "(SELECT $quotedName FROM `EXCLUDED`)";
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}
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$updateColumns[$name] = new Expression($quotedName);
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}
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}
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$updateSql = 'WITH "EXCLUDED" (' . implode(', ', $insertNames)
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. ') AS (' . (!empty($placeholders) ? 'VALUES (' . implode(', ', $placeholders) . ')' : ltrim($values, ' ')) . ') '
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. $this->update($table, $updateColumns, $updateCondition, $params);
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return "$updateSql; $insertSql;";
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}
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/**
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* Generates a batch INSERT SQL statement.
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*
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* For example,
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*
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* ```php
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* $connection->createCommand()->batchInsert('user', ['name', 'age'], [
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* ['Tom', 30],
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* ['Jane', 20],
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* ['Linda', 25],
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* ])->execute();
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* ```
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*
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* Note that the values in each row must match the corresponding column names.
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*
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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 names
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* @param array|\Generator $rows the rows to be batch inserted into the table
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* @return string the batch INSERT SQL statement
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*/
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public function batchInsert($table, $columns, $rows, &$params = [])
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{
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if (empty($rows)) {
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return '';
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}
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// SQLite supports batch insert natively since 3.7.11
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// http://www.sqlite.org/releaselog/3_7_11.html
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$this->db->open(); // ensure pdo is not null
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if (version_compare($this->db->getServerVersion(), '3.7.11', '>=')) {
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return parent::batchInsert($table, $columns, $rows, $params);
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}
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$schema = $this->db->getSchema();
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if (($tableSchema = $schema->getTableSchema($table)) !== null) {
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$columnSchemas = $tableSchema->columns;
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} else {
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$columnSchemas = [];
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}
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$values = [];
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foreach ($rows as $row) {
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$vs = [];
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foreach ($row as $i => $value) {
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if (isset($columnSchemas[$columns[$i]])) {
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$value = $columnSchemas[$columns[$i]]->dbTypecast($value);
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}
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if (is_string($value)) {
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$value = $schema->quoteValue($value);
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} elseif (is_float($value)) {
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// ensure type cast always has . as decimal separator in all locales
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$value = StringHelper::floatToString($value);
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} elseif ($value === false) {
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$value = 0;
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} elseif ($value === null) {
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$value = 'NULL';
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} elseif ($value instanceof ExpressionInterface) {
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$value = $this->buildExpression($value, $params);
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}
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$vs[] = $value;
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}
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$values[] = implode(', ', $vs);
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}
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if (empty($values)) {
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return '';
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}
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foreach ($columns as $i => $name) {
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$columns[$i] = $schema->quoteColumnName($name);
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}
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return 'INSERT INTO ' . $schema->quoteTableName($table)
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. ' (' . implode(', ', $columns) . ') SELECT ' . implode(' UNION SELECT ', $values);
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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, $value = null)
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{
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$db = $this->db;
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$table = $db->getTableSchema($tableName);
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if ($table !== null && $table->sequenceName !== null) {
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$tableName = $db->quoteTableName($tableName);
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if ($value === null) {
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$key = $this->db->quoteColumnName(reset($table->primaryKey));
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$value = $this->db->useMaster(function (Connection $db) use ($key, $tableName) {
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return $db->createCommand("SELECT MAX($key) FROM $tableName")->queryScalar();
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});
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} else {
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$value = (int) $value - 1;
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}
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return "UPDATE sqlite_sequence SET seq='$value' WHERE name='{$table->name}'";
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} elseif ($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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* Enables or disables integrity check.
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* @param bool $check whether to turn on or off the integrity check.
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* @param string $schema the schema of the tables. Meaningless for SQLite.
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* @param string $table the table name. Meaningless for SQLite.
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* @return string the SQL statement for checking integrity
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* @throws NotSupportedException this is not supported by SQLite
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*/
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public function checkIntegrity($check = true, $schema = '', $table = '')
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{
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return 'PRAGMA foreign_keys=' . (int) $check;
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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 'DELETE FROM ' . $this->db->quoteTableName($table);
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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 ' . $this->db->quoteTableName($name);
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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 $column the name of the column to be dropped. The name will be properly quoted by the method.
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* @return string the SQL statement for dropping a DB column.
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* @throws NotSupportedException this is not supported by SQLite
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*/
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public function dropColumn($table, $column)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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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 $oldName the old name of the column. The name will be properly quoted by the method.
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* @param string $newName the new name of the column. The name will be properly quoted by the method.
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* @return string the SQL statement for renaming a DB column.
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* @throws NotSupportedException this is not supported by SQLite
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*/
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public function renameColumn($table, $oldName, $newName)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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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|array $columns the name of the column to that the constraint will be added on.
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* If there are multiple columns, separate them with commas or use an array to represent them.
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* @param string $refTable the table that the foreign key references to.
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* @param string|array $refColumns the name of the column that the foreign key references to.
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* If there are multiple columns, separate them with commas or use an array to represent them.
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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 $update the ON UPDATE option. Most DBMS support these options: RESTRICT, CASCADE, NO ACTION, SET DEFAULT, SET NULL
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* @return string the SQL statement for adding a foreign key constraint to an existing table.
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* @throws NotSupportedException this is not supported by SQLite
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*/
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public function addForeignKey($name, $table, $columns, $refTable, $refColumns, $delete = null, $update = null)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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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 $table the table whose foreign is to be dropped. The name will be properly quoted by the method.
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* @return string the SQL statement for dropping a foreign key constraint.
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* @throws NotSupportedException this is not supported by SQLite
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*/
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public function dropForeignKey($name, $table)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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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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*
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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 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' RENAME TO ' . $this->db->quoteTableName($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 $type the new column type. The [[getColumnType()]] method will be invoked to convert abstract
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* column type (if any) into the physical one. Anything that is not recognized as abstract type will be kept
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* in the generated SQL. For example, 'string' will be turned into 'varchar(255)', while 'string not null'
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* will become 'varchar(255) not null'.
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* @return string the SQL statement for changing the definition of a column.
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* @throws NotSupportedException this is not supported by SQLite
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*/
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public function alterColumn($table, $column, $type)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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}
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/**
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* Builds a SQL statement for adding a primary key constraint to an existing table.
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* @param string $name the name of the primary key constraint.
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* @param string $table the table that the primary key constraint will be added to.
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* @param string|array $columns comma separated string or array of columns that the primary key will consist of.
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* @return string the SQL statement for adding a primary key constraint to an existing table.
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* @throws NotSupportedException this is not supported by SQLite
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*/
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public function addPrimaryKey($name, $table, $columns)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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}
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/**
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* Builds a SQL statement for removing a primary key constraint to an existing table.
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* @param string $name the name of the primary key constraint to be removed.
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* @param string $table the table that the primary key constraint will be removed from.
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* @return string the SQL statement for removing a primary key constraint from an existing table.
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* @throws NotSupportedException this is not supported by SQLite
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*/
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public function dropPrimaryKey($name, $table)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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}
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/**
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* {@inheritdoc}
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* @throws NotSupportedException this is not supported by SQLite.
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*/
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public function addUnique($name, $table, $columns)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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}
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/**
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* {@inheritdoc}
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* @throws NotSupportedException this is not supported by SQLite.
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*/
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public function dropUnique($name, $table)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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}
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/**
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* {@inheritdoc}
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* @throws NotSupportedException this is not supported by SQLite.
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*/
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public function addCheck($name, $table, $expression)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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}
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/**
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* {@inheritdoc}
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* @throws NotSupportedException this is not supported by SQLite.
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*/
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public function dropCheck($name, $table)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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}
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/**
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* {@inheritdoc}
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* @throws NotSupportedException this is not supported by SQLite.
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*/
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public function addDefaultValue($name, $table, $column, $value)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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}
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/**
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* {@inheritdoc}
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* @throws NotSupportedException this is not supported by SQLite.
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*/
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public function dropDefaultValue($name, $table)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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}
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/**
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* {@inheritdoc}
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* @throws NotSupportedException
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* @since 2.0.8
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*/
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public function addCommentOnColumn($table, $column, $comment)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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}
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/**
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* {@inheritdoc}
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* @throws NotSupportedException
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* @since 2.0.8
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*/
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public function addCommentOnTable($table, $comment)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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}
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/**
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* {@inheritdoc}
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* @throws NotSupportedException
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* @since 2.0.8
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*/
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public function dropCommentFromColumn($table, $column)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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}
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/**
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* {@inheritdoc}
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* @throws NotSupportedException
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* @since 2.0.8
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*/
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public function dropCommentFromTable($table)
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{
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throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
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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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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($offset)) {
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// limit is not optional in SQLite
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// http://www.sqlite.org/syntaxdiagrams.html#select-stmt
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$sql = "LIMIT 9223372036854775807 OFFSET $offset"; // 2^63-1
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}
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return $sql;
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}
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/**
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* {@inheritdoc}
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|
*/
|
|
public function build($query, $params = [])
|
|
{
|
|
$query = $query->prepare($this);
|
|
|
|
$params = empty($params) ? $query->params : array_merge($params, $query->params);
|
|
|
|
$clauses = [
|
|
$this->buildSelect($query->select, $params, $query->distinct, $query->selectOption),
|
|
$this->buildFrom($query->from, $params),
|
|
$this->buildJoin($query->join, $params),
|
|
$this->buildWhere($query->where, $params),
|
|
$this->buildGroupBy($query->groupBy),
|
|
$this->buildHaving($query->having, $params),
|
|
];
|
|
|
|
$sql = implode($this->separator, array_filter($clauses));
|
|
$sql = $this->buildOrderByAndLimit($sql, $query->orderBy, $query->limit, $query->offset);
|
|
|
|
if (!empty($query->orderBy)) {
|
|
foreach ($query->orderBy as $expression) {
|
|
if ($expression instanceof ExpressionInterface) {
|
|
$this->buildExpression($expression, $params);
|
|
}
|
|
}
|
|
}
|
|
if (!empty($query->groupBy)) {
|
|
foreach ($query->groupBy as $expression) {
|
|
if ($expression instanceof ExpressionInterface) {
|
|
$this->buildExpression($expression, $params);
|
|
}
|
|
}
|
|
}
|
|
|
|
$union = $this->buildUnion($query->union, $params);
|
|
if ($union !== '') {
|
|
$sql = "$sql{$this->separator}$union";
|
|
}
|
|
|
|
return [$sql, $params];
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function buildUnion($unions, &$params)
|
|
{
|
|
if (empty($unions)) {
|
|
return '';
|
|
}
|
|
|
|
$result = '';
|
|
|
|
foreach ($unions as $i => $union) {
|
|
$query = $union['query'];
|
|
if ($query instanceof Query) {
|
|
list($unions[$i]['query'], $params) = $this->build($query, $params);
|
|
}
|
|
|
|
$result .= ' UNION ' . ($union['all'] ? 'ALL ' : '') . ' ' . $unions[$i]['query'];
|
|
}
|
|
|
|
return trim($result);
|
|
}
|
|
}
|