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This commit is contained in:
Qiang Xue
2011-12-27 23:17:39 -05:00
parent eddf9937e1
commit 1295fbe2bc
5 changed files with 384 additions and 8 deletions
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6
framework/db/dao/QueryBuilder.php
View File

@ -309,14 +309,14 @@ class QueryBuilder extends \yii\base\Object
/**
* Builds a SQL statement for renaming a column.
* @param string $table the table whose column is to be renamed. The name will be properly quoted by the method.
* @param string $name the old name of the column. The name will be properly quoted by the method.
* @param string $oldName the old name of the column. The name will be properly quoted by the method.
* @param string $newName the new name of the column. The name will be properly quoted by the method.
* @return string the SQL statement for renaming a DB column.
*/
public function renameColumn($table, $name, $newName)
public function renameColumn($table, $oldName, $newName)
{
return "ALTER TABLE " . $this->driver->quoteTableName($table)
. " RENAME COLUMN " . $this->driver->quoteSimpleColumnName($name)
. " RENAME COLUMN " . $this->driver->quoteSimpleColumnName($oldName)
. " TO " . $this->driver->quoteSimpleColumnName($newName);
}

3
framework/db/dao/mysql/Driver.php
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@ -75,8 +75,7 @@ class Driver extends \yii\db\dao\Driver
}
/**
* Creates a query builder for the database.
* This method may be overridden by child classes to create a DBMS-specific query builder.
* Creates a query builder for the MySQL database.
* @return QueryBuilder query builder instance
*/
public function createQueryBuilder()

6
framework/db/dao/mysql/QueryBuilder.php
View File

@ -13,7 +13,7 @@ namespace yii\db\dao\mysql;
use yii\db\Exception;
/**
* QueryBuilder builds a SQL statement based on the specification given as a [[Query]] object.
* QueryBuilder is the query builder for MySQL databases.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
@ -23,7 +23,7 @@ class QueryBuilder extends \yii\db\dao\QueryBuilder
/**
* @var array mapping from abstract column types (keys) to physical column types (values).
*/
public $typeMap = array(
public $typeMap = array(
Driver::TYPE_PK => 'int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY',
Driver::TYPE_STRING => 'varchar(255)',
Driver::TYPE_TEXT => 'text',
@ -39,7 +39,7 @@ class QueryBuilder extends \yii\db\dao\QueryBuilder
Driver::TYPE_BINARY => 'blob',
Driver::TYPE_BOOLEAN => 'tinyint(1)',
Driver::TYPE_MONEY => 'decimal(19,4)',
);
);
/**
* Builds a SQL statement for renaming a column.

210
framework/db/dao/sqlite/Driver.php Normal file
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@ -0,0 +1,210 @@
<?php
/**
* Driver class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright Copyright &copy; 2008-2012 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\db\dao\sqlite;
use yii\db\dao\TableSchema;
use yii\db\dao\ColumnSchema;
/**
* Driver is the class for retrieving metadata from a SQLite (2/3) database.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
class Driver extends \yii\db\dao\Driver
{
/**
* @var array mapping from physical column types (keys) to abstract column types (values)
*/
public $typeMap = array(
'tinyint' => self::TYPE_SMALLINT,
'bit' => self::TYPE_SMALLINT,
'smallint' => self::TYPE_SMALLINT,
'mediumint' => self::TYPE_INTEGER,
'int' => self::TYPE_INTEGER,
'integer' => self::TYPE_INTEGER,
'bigint' => self::TYPE_BIGINT,
'float' => self::TYPE_FLOAT,
'double' => self::TYPE_FLOAT,
'real' => self::TYPE_FLOAT,
'decimal' => self::TYPE_DECIMAL,
'numeric' => self::TYPE_DECIMAL,
'tinytext' => self::TYPE_TEXT,
'mediumtext' => self::TYPE_TEXT,
'longtext' => self::TYPE_TEXT,
'text' => self::TYPE_TEXT,
'varchar' => self::TYPE_STRING,
'string' => self::TYPE_STRING,
'char' => self::TYPE_STRING,
'datetime' => self::TYPE_DATETIME,
'year' => self::TYPE_DATE,
'date' => self::TYPE_DATE,
'time' => self::TYPE_TIME,
'timestamp' => self::TYPE_TIMESTAMP,
'enum' => self::TYPE_STRING,
);
/**
* Creates a query builder for the MySQL database.
* This method may be overridden by child classes to create a DBMS-specific query builder.
* @return QueryBuilder query builder instance
*/
public function createQueryBuilder()
{
return new QueryBuilder($this->connection);
}
/**
* Returns all table names in the database.
* @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema.
* If not empty, the returned table names will be prefixed with the schema name.
* @return array all table names in the database.
*/
protected function findTableNames($schema = '')
{
$sql = "SELECT DISTINCT tbl_name FROM sqlite_master WHERE tbl_name<>'sqlite_sequence'";
return $this->connection->createCommand($sql)->queryColumn();
}
/**
* Loads the metadata for the specified table.
* @param string $name table name
* @return \yii\db\dao\TableSchema driver dependent table metadata. Null if the table does not exist.
*/
protected function loadTableSchema($name)
{
$table = new TableSchema;
$table->name = $name;
$table->quotedName = $this->quoteTableName($name);
if ($this->findColumns($table)) {
$this->findConstraints($table);
return $table;
}
}
/**
* Collects the table column metadata.
* @param \yii\db\dao\TableSchema $table the table metadata
* @return boolean whether the table exists in the database
*/
protected function findColumns($table)
{
$sql = "PRAGMA table_info({$table->quotedName})";
$columns = $this->connection->createCommand($sql)->queryAll();
if (empty($columns)) {
return false;
}
foreach ($columns as $column) {
$column = $this->createColumn($column);
$table->columns[$column->name] = $column;
if ($column->isPrimaryKey) {
if ($table->primaryKey === null) {
$table->primaryKey = $column->name;
} elseif (is_string($table->primaryKey)) {
$table->primaryKey = array($table->primaryKey, $column->name);
} else {
$table->primaryKey[] = $column->name;
}
}
}
if (is_string($table->primaryKey) && !strncasecmp($table->columns[$table->primaryKey]->dbType, 'int', 3)) {
$table->sequenceName = '';
$table->columns[$table->primaryKey]->autoIncrement = true;
}
return true;
}
/**
* Collects the foreign key column details for the given table.
* @param \yii\db\dao\TableSchema $table the table metadata
*/
protected function findConstraints($table)
{
$sql = "PRAGMA foreign_key_list({$table->quotedName})";
$keys = $this->connection->createCommand($sql)->queryAll();
foreach ($keys as $key) {
$table->foreignKeys[] = array($key['table'], $key['from'] => $key['to']);
}
}
/**
* Creates a table column.
* @param array $column column metadata
* @return ColumnSchema normalized column metadata
*/
protected function createColumn($column)
{
$c = new ColumnSchema;
$c->name = $column['name'];
$c->quotedName = $this->quoteSimpleColumnName($c->name);
$c->allowNull = !$column['notnull'];
$c->isPrimaryKey = $column['pk'] != 0;
$c->dbType = $column['type'];
$this->resolveColumnType($c);
$c->resolvePhpType();
$this->resolveColumnDefault($c, $column['dflt_value']);
return $c;
}
/**
* Resolves the abstract data type for the column.
* @param \yii\db\dao\ColumnSchema $column the column metadata object
*/
public function resolveColumnType($column)
{
$column->type = self::TYPE_STRING;
$column->unsigned = strpos($column->dbType, 'unsigned') !== false;
if (preg_match('/^(\w+)(?:\(([^\)]+)\))?/', $column->dbType, $matches)) {
$type = $matches[1];
if (isset($this->typeMap[$type])) {
$column->type = $this->typeMap[$type];
}
if (!empty($matches[2])) {
$values = explode(',', $matches[2]);
$column->size = $column->precision = (int)$values[0];
if (isset($values[1])) {
$column->scale = (int)$values[1];
}
if ($column->size === 1 && ($type === 'tinyint' || $type === 'bit')) {
$column->type = 'boolean';
} elseif ($type === 'bit') {
if ($column->size > 32) {
$column->type = 'bigint';
} elseif ($column->size === 32) {
$column->type = 'integer';
}
}
}
}
}
/**
* Resolves the default value for the column.
* @param \yii\db\dao\ColumnSchema $column the column metadata object
* @param string $value the default value fetched from database
*/
protected function resolveColumnDefault($column, $value)
{
if ($column->type === 'string') {
$column->defaultValue = trim($value, "'\"");
} else {
$column->defaultValue = $column->typecast(strcasecmp($value, 'null') ? $value : null);
}
}
}

167
framework/db/dao/sqlite/QueryBuilder.php Normal file
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@ -0,0 +1,167 @@
<?php
/**
* QueryBuilder class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright Copyright &copy; 2008-2012 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\db\dao\sqlite;
use yii\db\Exception;
/**
* QueryBuilder is the query builder for MySQL databases.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
class QueryBuilder extends \yii\db\dao\QueryBuilder
{
/**
* @var array mapping from abstract column types (keys) to physical column types (values).
*/
public $typeMap = array(
Driver::TYPE_PK => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
Driver::TYPE_STRING => 'varchar(255)',
Driver::TYPE_TEXT => 'text',
Driver::TYPE_SMALLINT => 'smallint',
Driver::TYPE_INTEGER => 'integer',
Driver::TYPE_BIGINT => 'bigint',
Driver::TYPE_FLOAT => 'float',
Driver::TYPE_DECIMAL => 'decimal',
Driver::TYPE_DATETIME => 'datetime',
Driver::TYPE_TIMESTAMP => 'timestamp',
Driver::TYPE_TIME => 'time',
Driver::TYPE_DATE => 'date',
Driver::TYPE_BINARY => 'blob',
Driver::TYPE_BOOLEAN => 'tinyint(1)',
Driver::TYPE_MONEY => 'decimal(19,4)',
);
/**
* Resets 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 $table the table schema whose primary key sequence will be reset
* @param mixed $value the value for the primary key of the next new row inserted. If this is not set,
* the next new row's primary key will have a value 1.
*/
public function resetSequence($table, $value = null)
{
if ($table->sequenceName !== null) {
if ($value === null) {
$value = $this->connection->createCommand("SELECT MAX(`{$table->primaryKey}`) FROM {$table->quotedName}")->queryScalar();
}
else {
$value = (int)$value - 1;
}
try {
// it's possible sqlite_sequence does not exist
$this->connection->createCommand("UPDATE sqlite_sequence SET seq='$value' WHERE name='{$table->name}'")->execute();
} catch (Exception $e) {
}
}
}
/**
* Enables or disables integrity check.
* @param boolean $check whether to turn on or off the integrity check.
* @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema.
*/
public function checkIntegrity($check = true, $schema = '')
{
// SQLite doesn't enforce integrity
}
/**
* Builds a SQL statement for truncating a DB table.
* @param string $table the table to be truncated. The name will be properly quoted by the method.
* @return string the SQL statement for truncating a DB table.
*/
public function truncateTable($table)
{
return "DELETE FROM " . $this->driver->quoteTableName($table);
}
/**
* Builds a SQL statement for dropping an index.
* @param string $name the name of the index to be dropped. The name will be properly quoted by the method.
* @param string $table the table whose index is to be dropped. The name will be properly quoted by the method.
* @return string the SQL statement for dropping an index.
*/
public function dropIndex($name, $table)
{
return 'DROP INDEX ' . $this->driver->quoteTableName($name);
}
/**
* Builds a SQL statement for dropping a DB column.
* @param string $table the table whose column is to be dropped. The name will be properly quoted by the method.
* @param string $column the name of the column to be dropped. The name will be properly quoted by the method.
* @return string the SQL statement for dropping a DB column.
*/
public function dropColumn($table, $column)
{
throw new Exception('Dropping DB column is not supported by SQLite.');
}
/**
* Builds a SQL statement for renaming a column.
* @param string $table the table whose column is to be renamed. The name will be properly quoted by the method.
* @param string $oldName the old name of the column. The name will be properly quoted by the method.
* @param string $newName the new name of the column. The name will be properly quoted by the method.
* @return string the SQL statement for renaming a DB column.
*/
public function renameColumn($table, $oldName, $newName)
{
throw new Exception('Renaming a DB column is not supported by SQLite.');
}
/**
* Builds a SQL statement for adding a foreign key constraint to an existing table.
* The method will properly quote the table and column names.
* @param string $name the name of the foreign key constraint.
* @param string $table the table that the foreign key constraint will be added to.
* @param string|array $columns the name of the column to that the constraint will be added on.
* If there are multiple columns, separate them with commas or use an array to represent them.
* @param string $refTable the table that the foreign key references to.
* @param string|array $refColumns the name of the column that the foreign key references to.
* If there are multiple columns, separate them with commas or use an array to represent them.
* @param string $delete the ON DELETE option. Most DBMS support these options: RESTRICT, CASCADE, NO ACTION, SET DEFAULT, SET NULL
* @param string $update the ON UPDATE option. Most DBMS support these options: RESTRICT, CASCADE, NO ACTION, SET DEFAULT, SET NULL
* @return string the SQL statement for adding a foreign key constraint to an existing table.
*/
public function addForeignKey($name, $table, $columns, $refTable, $refColumns, $delete = null, $update = null)
{
throw new Exception('Adding a foreign key constraint to an existing table is not supported by SQLite.');
}
/**
* Builds a SQL statement for dropping a foreign key constraint.
* @param string $name the name of the foreign key constraint to be dropped. The name will be properly quoted by the method.
* @param string $table the table whose foreign is to be dropped. The name will be properly quoted by the method.
* @return string the SQL statement for dropping a foreign key constraint.
*/
public function dropForeignKey($name, $table)
{
throw new Exception('Dropping a foreign key constraint is not supported by SQLite.');
}
/**
* Builds a SQL statement for changing the definition of a column.
* @param string $table the table whose column is to be changed. The table name will be properly quoted by the method.
* @param string $column the name of the column to be changed. The name will be properly quoted by the method.
* @param string $type the new column type. The [[getColumnType()]] method will be invoked to convert abstract
* column type (if any) into the physical one. Anything that is not recognized as abstract type will be kept
* in the generated SQL. For example, 'string' will be turned into 'varchar(255)', while 'string not null'
* will become 'varchar(255) not null'.
* @return string the SQL statement for changing the definition of a column.
*/
public function alterColumn($table, $column, $type)
{
throw new Exception('Altering a DB column is not supported by SQLite.');
}
}