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tags/2.0.0-beta
Qiang Xue 14 years ago
parent
3335f09dae
commit
14286201d5
3 changed files with 151 additions and 151 deletions
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  1. 11
      framework/db/dao/Connection.php
  2. 130
      framework/db/dao/QueryBuilder.php
  3. 161
      framework/db/dao/Schema.php

11
framework/db/dao/Connection.php
Unescape View File

@ -451,11 +451,12 @@ class Connection extends \yii\base\ApplicationComponent
} }
else { else {
$driver = $this->getDriverName(); $driver = $this->getDriverName();
if (isset($this->schemaMap[$driver])) if (isset($this->schemaMap[$driver])) {
return $this->_schema = Yii::createComponent($this->schemaMap[$driver], $this); return $this->_schema = \Yii::createComponent($this->schemaMap[$driver], $this);
else }
throw new CDbException(Yii::t('yii', 'Connection does not support reading schema for {driver} database.', else {
array('{driver}' => $driver))); throw new Exception("Connection does not support reading schema for '$driver' database.");
}
} }
} }

130
framework/db/dao/QueryBuilder.php
Unescape View File

@ -18,19 +18,32 @@ namespace yii\db\dao;
*/ */
class QueryBuilder extends \yii\base\Component class QueryBuilder extends \yii\base\Component
{ {
private $_connection;
public function __construct($connection)
{
$this->_connection = $connection;
}
/** /**
* @return CDbConnection the connection associated with this command * @var array the abstract column types mapped to physical column types.
*/ */
public function getConnection() public $columnTypes = array(
'pk' => 'int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY',
'string' => 'varchar(255)',
'text' => 'text',
'integer' => 'int(11)',
'float' => 'float',
'decimal' => 'decimal',
'datetime' => 'datetime',
'timestamp' => 'timestamp',
'time' => 'time',
'date' => 'date',
'binary' => 'blob',
'boolean' => 'tinyint(1)',
'money' => 'decimal(19,4)',
);
public $connection;
public $schema;
public function __construct($schema)
{ {
return $this->_connection; $this->connection = $schema->getDbConnection();
$this->schema = $schema;
} }
public function build($query) public function build($query)
@ -69,14 +82,14 @@ class QueryBuilder extends \yii\base\Component
public function createTable($table, $columns, $options = null) public function createTable($table, $columns, $options = null)
{ {
$cols = array(); $cols = array();
foreach ($columns as $name => $type) foreach ($columns as $name => $type) {
{ if (is_string($name)) {
if (is_string($name)) $cols[] = "\t" . $this->schema->quoteColumnName($name) . ' ' . $this->schema->getColumnType($type);
$cols[] = "\t" . $this->quoteColumnName($name) . ' ' . $this->getColumnType($type); }
else else
$cols[] = "\t" . $type; $cols[] = "\t" . $type;
} }
$sql = "CREATE TABLE " . $this->quoteTableName($table) . " (\n" . implode(",\n", $cols) . "\n)"; $sql = "CREATE TABLE " . $this->schema->quoteTableName($table) . " (\n" . implode(",\n", $cols) . "\n)";
return $options === null ? $sql : $sql . ' ' . $options; return $options === null ? $sql : $sql . ' ' . $options;
} }
@ -253,6 +266,67 @@ class QueryBuilder extends \yii\base\Component
return 'DROP INDEX ' . $this->quoteTableName($name) . ' ON ' . $this->quoteTableName($table); return 'DROP INDEX ' . $this->quoteTableName($name) . ' ON ' . $this->quoteTableName($table);
} }
/**
* 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 CDbTableSchema $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)
{
}
/**
* 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 = '')
{
}
/**
* Converts an abstract column type into a physical column type.
* The conversion is done using the type map specified in {@link columnTypes}.
* These abstract column types are supported (using MySQL as example to explain the corresponding
* physical types):
* <ul>
* <li>pk: an auto-incremental primary key type, will be converted into "int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY"</li>
* <li>string: string type, will be converted into "varchar(255)"</li>
* <li>text: a long string type, will be converted into "text"</li>
* <li>integer: integer type, will be converted into "int(11)"</li>
* <li>boolean: boolean type, will be converted into "tinyint(1)"</li>
* <li>float: float number type, will be converted into "float"</li>
* <li>decimal: decimal number type, will be converted into "decimal"</li>
* <li>datetime: datetime type, will be converted into "datetime"</li>
* <li>timestamp: timestamp type, will be converted into "timestamp"</li>
* <li>time: time type, will be converted into "time"</li>
* <li>date: date type, will be converted into "date"</li>
* <li>binary: binary data type, will be converted into "blob"</li>
* </ul>
*
* If the abstract type contains two or more parts separated by spaces (e.g. "string NOT NULL"), then only
* the first part will be converted, and the rest of the parts will be appended to the conversion result.
* For example, 'string NOT NULL' is converted to 'varchar(255) NOT NULL'.
* @param string $type abstract column type
* @return string physical column type.
*/
public function getColumnType($type)
{
if (isset($this->columnTypes[$type])) {
return $this->columnTypes[$type];
}
elseif (($pos = strpos($type, ' ')) !== false) {
$t = substr($type, 0, $pos);
return (isset($this->columnTypes[$t]) ? $this->columnTypes[$t] : $t) . substr($type, $pos);
}
else {
return $type;
}
}
protected function buildSelect($query) protected function buildSelect($query)
{ {
$select = $query->distinct ? 'SELECT DISTINCT' : 'SELECT'; $select = $query->distinct ? 'SELECT DISTINCT' : 'SELECT';
@ -275,10 +349,10 @@ class QueryBuilder extends \yii\base\Component
} }
elseif (strpos($column, '(') === false) { elseif (strpos($column, '(') === false) {
if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)([\w\-\.])$/', $column, $matches)) { if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)([\w\-\.])$/', $column, $matches)) {
$columns[$i] = $this->_connection->quoteColumnName($matches[1]) . ' AS ' . $this->_connection->quoteSimpleColumnName($matches[2]); $columns[$i] = $this->connection->quoteColumnName($matches[1]) . ' AS ' . $this->connection->quoteSimpleColumnName($matches[2]);
} }
else { else {
$columns[$i] = $this->_connection->quoteColumnName($column); $columns[$i] = $this->connection->quoteColumnName($column);
} }
} }
} }
@ -299,10 +373,10 @@ class QueryBuilder extends \yii\base\Component
foreach ($tables as $i => $table) { foreach ($tables as $i => $table) {
if (strpos($table, '(') === false) { if (strpos($table, '(') === false) {
if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)(.*)$/i', $table, $matches)) { // with alias if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)(.*)$/i', $table, $matches)) { // with alias
$tables[$i] = $this->_connection->quoteTableName($matches[1]) . ' ' . $this->_connection->quoteTableName($matches[2]); $tables[$i] = $this->connection->quoteTableName($matches[1]) . ' ' . $this->connection->quoteTableName($matches[2]);
} }
else { else {
$tables[$i] = $this->_connection->quoteTableName($table); $tables[$i] = $this->connection->quoteTableName($table);
} }
} }
} }
@ -326,10 +400,10 @@ class QueryBuilder extends \yii\base\Component
$table = $join[1]; $table = $join[1];
if (strpos($table,'(')===false) { if (strpos($table,'(')===false) {
if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)(.*)$/', $table, $matches)) { // with alias if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)(.*)$/', $table, $matches)) { // with alias
$table = $this->_connection->quoteTableName($matches[1]).' '.$this->_connection->quoteTableName($matches[2]); $table = $this->connection->quoteTableName($matches[1]).' '.$this->connection->quoteTableName($matches[2]);
} }
else { else {
$table = $this->_connection->quoteTableName($table); $table = $this->connection->quoteTableName($table);
} }
} }
$joins[$i] = strtoupper($join[0]) . ' ' . $table; $joins[$i] = strtoupper($join[0]) . ' ' . $table;
@ -371,7 +445,7 @@ class QueryBuilder extends \yii\base\Component
$columns[$i] = (string)$column; $columns[$i] = (string)$column;
} }
elseif (strpos($column, '(') === false) { elseif (strpos($column, '(') === false) {
$columns[$i] = $this->_connection->quoteColumnName($column); $columns[$i] = $this->connection->quoteColumnName($column);
} }
} }
return 'GROUP BY ' . implode(', ', $columns); return 'GROUP BY ' . implode(', ', $columns);
@ -402,10 +476,10 @@ class QueryBuilder extends \yii\base\Component
} }
elseif (strpos($column, '(') === false) { elseif (strpos($column, '(') === false) {
if (preg_match('/^(.*?)\s+(asc|desc)$/i', $column, $matches)) { if (preg_match('/^(.*?)\s+(asc|desc)$/i', $column, $matches)) {
$columns[$i] = $this->_connection->quoteColumnName($matches[1]) . ' ' . strtoupper($matches[2]); $columns[$i] = $this->connection->quoteColumnName($matches[1]) . ' ' . strtoupper($matches[2]);
} }
else { else {
$columns[$i] = $this->_connection->quoteColumnName($column); $columns[$i] = $this->connection->quoteColumnName($column);
} }
} }
} }
@ -435,7 +509,7 @@ class QueryBuilder extends \yii\base\Component
} }
foreach ($unions as $i => $union) { foreach ($unions as $i => $union) {
if ($union instanceof Query) { if ($union instanceof Query) {
$unions[$i] = $union->getSql($this->_connection); $unions[$i] = $union->getSql($this->connection);
} }
} }
return "UNION (\n" . implode("\n) UNION (\n", $unions) . "\n)"; return "UNION (\n" . implode("\n) UNION (\n", $unions) . "\n)";
@ -469,7 +543,7 @@ class QueryBuilder extends \yii\base\Component
$column = $conditions[1]; $column = $conditions[1];
if (strpos($column, '(') === false) { if (strpos($column, '(') === false) {
$column = $this->_connection->quoteColumnName($column); $column = $this->connection->quoteColumnName($column);
} }
$values = $conditions[2]; $values = $conditions[2];
@ -483,7 +557,7 @@ class QueryBuilder extends \yii\base\Component
} }
foreach ($values as $i => $value) { foreach ($values as $i => $value) {
if (is_string($value)) { if (is_string($value)) {
$values[$i] = $this->_connection->quoteValue($value); $values[$i] = $this->connection->quoteValue($value);
} }
else { else {
$values[$i] = (string)$value; $values[$i] = (string)$value;
@ -506,7 +580,7 @@ class QueryBuilder extends \yii\base\Component
} }
$expressions = array(); $expressions = array();
foreach ($values as $value) { foreach ($values as $value) {
$expressions[] = $column . ' ' . $operator . ' ' . $this->_connection->quoteValue($value); $expressions[] = $column . ' ' . $operator . ' ' . $this->connection->quoteValue($value);
} }
return implode($andor, $expressions); return implode($andor, $expressions);
} }

161
framework/db/dao/Schema.php
Unescape View File

@ -18,12 +18,6 @@ namespace yii\db\dao;
*/ */
abstract class Schema extends \yii\base\Component abstract class Schema extends \yii\base\Component
{ {
/**
* @var array the abstract column types mapped to physical column types.
* @since 1.1.6
*/
public $columnTypes = array();
private $_tableNames = array(); private $_tableNames = array();
private $_tables = array(); private $_tables = array();
private $_connection; private $_connection;
@ -49,55 +43,58 @@ abstract class Schema extends \yii\base\Component
} }
/** /**
* @return CDbConnection database connection. The connection is active. * @return Connection database connection. The connection is active.
*/ */
public function getDbConnection() public function getConnection()
{ {
return $this->_connection; return $this->_connection;
} }
/** /**
* Obtains the metadata for the named table. * Obtains the metadata for the named table.
* @param string $name table name * @param string $name table name. The table name may contain schema name if any. Do not quote the table name.
* @return CDbTableSchema table metadata. Null if the named table does not exist. * @return CDbTableSchema table metadata. Null if the named table does not exist.
*/ */
public function getTable($name) public function getTableSchema($name)
{ {
if (isset($this->_tables[$name])) if (isset($this->_tables[$name])) {
return $this->_tables[$name]; return $this->_tables[$name];
else }
{
if ($this->_connection->tablePrefix !== null && strpos($name, '{{') !== false)
$realName = preg_replace('/\{\{(.*?)\}\}/', $this->_connection->tablePrefix . '$1', $name);
else
$realName = $name;
// temporarily disable query caching if (strpos($name, '{{') !== false) {
if ($this->_connection->queryCachingDuration > 0) $realName = preg_replace('/\{\{(.*?)\}\}/', $this->_connection->tablePrefix . '$1', $name);
{ }
$qcDuration = $this->_connection->queryCachingDuration; else {
$this->_connection->queryCachingDuration = 0; $realName = $name;
} }
$db = $this->_connection;
// temporarily disable query caching
if ($db->queryCachingDuration >= 0) {
$qcDuration = $db->queryCachingDuration;
$db->queryCachingDuration = -1;
}
if (!isset($this->_cacheExclude[$name]) && ($duration = $this->_connection->schemaCachingDuration) > 0 && $this->_connection->schemaCacheID !== false && ($cache = Yii::app()->getComponent($this->_connection->schemaCacheID)) !== null) if (!in_array($name, $db->schemaCachingExclude) && $db->schemaCachingDuration >= 0 && ($cache = \Yii::app()->getComponent($db->schemaCacheID)) !== null) {
{ $key = __CLASS__ . ":{$db->dsn}/{$db->username}/{$name}";
$key = 'yii:dbschema' . $this->_connection->connectionString . ':' . $this->_connection->username . ':' . $name; if (($table = $cache->get($key)) === false) {
if (($table = $cache->get($key)) === false) $table = $this->loadTableSchema($realName);
{ if ($table !== null) {
$table = $this->loadTable($realName); $cache->set($key, $table, $db->schemaCachingDuration);
if ($table !== null)
$cache->set($key, $table, $duration);
} }
$this->_tables[$name] = $table;
} }
else $this->_tables[$name] = $table;
$this->_tables[$name] = $table = $this->loadTable($realName); }
else {
if (isset($qcDuration)) // re-enable query caching $this->_tables[$name] = $table = $this->loadTableSchema($realName);
$this->_connection->queryCachingDuration = $qcDuration; }
return $table; if (isset($qcDuration)) { // re-enable query caching
$db->queryCachingDuration = $qcDuration;
} }
return $table;
} }
/** /**
@ -106,7 +103,6 @@ abstract class Schema extends \yii\base\Component
* @return array the metadata for all tables in the database. * @return array the metadata for all tables in the database.
* Each array element is an instance of {@link CDbTableSchema} (or its child class). * Each array element is an instance of {@link CDbTableSchema} (or its child class).
* The array keys are table names. * The array keys are table names.
* @since 1.0.2
*/ */
public function getTables($schema = '') public function getTables($schema = '')
{ {
@ -124,7 +120,6 @@ abstract class Schema extends \yii\base\Component
* @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema. * @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema.
* If not empty, the returned table names will be prefixed with the schema name. * If not empty, the returned table names will be prefixed with the schema name.
* @return array all table names in the database. * @return array all table names in the database.
* @since 1.0.2
*/ */
public function getTableNames($schema = '') public function getTableNames($schema = '')
{ {
@ -151,15 +146,11 @@ abstract class Schema extends \yii\base\Component
*/ */
public function refresh() public function refresh()
{ {
if (($duration = $this->_connection->schemaCachingDuration) > 0 && $this->_connection->schemaCacheID !== false && ($cache = Yii::app()->getComponent($this->_connection->schemaCacheID)) !== null) $db = $this->_connection;
{ if ($db->schemaCachingDuration >= 0 && ($cache = \Yii::app()->getComponent($db->schemaCacheID)) !== null) {
foreach (array_keys($this->_tables) as $name) foreach ($this->_tables as $name => $table) {
{ $key = __CLASS__ . ":{$db->dsn}/{$db->username}/{$name}";
if (!isset($this->_cacheExclude[$name])) $cache->delete($key);
{
$key = 'yii:dbschema' . $this->_connection->connectionString . ':' . $this->_connection->username . ':' . $name;
$cache->delete($key);
}
} }
} }
$this->_tables = array(); $this->_tables = array();
@ -190,7 +181,6 @@ abstract class Schema extends \yii\base\Component
* A simple table name does not schema prefix. * A simple table name does not schema prefix.
* @param string $name table name * @param string $name table name
* @return string the properly quoted table name * @return string the properly quoted table name
* @since 1.1.6
*/ */
public function quoteSimpleTableName($name) public function quoteSimpleTableName($name)
{ {
@ -255,36 +245,13 @@ abstract class Schema extends \yii\base\Component
} }
/** /**
* 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 CDbTableSchema $table the table schema whose primary key sequence will be reset
* @param mixed $value the value for the primary key of the next new row inserted. If this is not set,
* the next new row's primary key will have a value 1.
* @since 1.1
*/
public function resetSequence($table, $value = null)
{
}
/**
* Enables or disables integrity check.
* @param boolean $check whether to turn on or off the integrity check.
* @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema.
* @since 1.1
*/
public function checkIntegrity($check = true, $schema = '')
{
}
/**
* Creates a command builder for the database. * Creates a command builder for the database.
* This method may be overridden by child classes to create a DBMS-specific command builder. * This method may be overridden by child classes to create a DBMS-specific command builder.
* @return CDbCommandBuilder command builder instance * @return CDbCommandBuilder command builder instance
*/ */
protected function createCommandBuilder() protected function createQueryBuilder()
{ {
return new CDbCommandBuilder($this); return new QueryBuilder($this);
} }
/** /**
@ -294,52 +261,10 @@ abstract class Schema extends \yii\base\Component
* @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema. * @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema.
* If not empty, the returned table names will be prefixed with the schema name. * If not empty, the returned table names will be prefixed with the schema name.
* @return array all table names in the database. * @return array all table names in the database.
* @since 1.0.2
*/ */
protected function findTableNames($schema = '') protected function findTableNames($schema = '')
{ {
throw new CDbException(Yii::t('yii', '{class} does not support fetching all table names.', throw new Exception(get_class($this) . 'does not support fetching all table names.');
array('{class}' => get_class($this))));
} }
/**
* Converts an abstract column type into a physical column type.
* The conversion is done using the type map specified in {@link columnTypes}.
* These abstract column types are supported (using MySQL as example to explain the corresponding
* physical types):
* <ul>
* <li>pk: an auto-incremental primary key type, will be converted into "int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY"</li>
* <li>string: string type, will be converted into "varchar(255)"</li>
* <li>text: a long string type, will be converted into "text"</li>
* <li>integer: integer type, will be converted into "int(11)"</li>
* <li>boolean: boolean type, will be converted into "tinyint(1)"</li>
* <li>float: float number type, will be converted into "float"</li>
* <li>decimal: decimal number type, will be converted into "decimal"</li>
* <li>datetime: datetime type, will be converted into "datetime"</li>
* <li>timestamp: timestamp type, will be converted into "timestamp"</li>
* <li>time: time type, will be converted into "time"</li>
* <li>date: date type, will be converted into "date"</li>
* <li>binary: binary data type, will be converted into "blob"</li>
* </ul>
*
* If the abstract type contains two or more parts separated by spaces (e.g. "string NOT NULL"), then only
* the first part will be converted, and the rest of the parts will be appended to the conversion result.
* For example, 'string NOT NULL' is converted to 'varchar(255) NOT NULL'.
* @param string $type abstract column type
* @return string physical column type.
* @since 1.1.6
*/
public function getColumnType($type)
{
if (isset($this->columnTypes[$type]))
return $this->columnTypes[$type];
elseif (($pos = strpos($type, ' ')) !== false)
{
$t = substr($type, 0, $pos);
return (isset($this->columnTypes[$t]) ? $this->columnTypes[$t] : $t) . substr($type, $pos);
}
else
return $type;
}
} }

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