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Commit 3335f09d by Qiang Xue
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parent 05c7915d
Showing with 803 additions and 483 deletions
framework/db/dao/ColumnSchema.php
<?php
/**
* CDbColumnSchema class file.
* ColumnSchema class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright Copyright &copy; 2008-2011 Yii Software LLC
* @copyright Copyright &copy; 2008-2012 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
/**
* CDbColumnSchema class describes the column meta data of a database table.
* ColumnSchema class describes the column meta data of a database table.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @version $Id: CDbColumnSchema.php 3099 2011-03-19 01:26:47Z qiang.xue $
* @package system.db.schema
* @since 1.0
* @since 2.0
*/
class CDbColumnSchema extends CComponent
class ColumnSchema extends CComponent
{
/**
* @var string name of this column (without quotes).
......@@ -25,19 +23,25 @@ class CDbColumnSchema extends CComponent
/**
* @var string raw name of this column. This is the quoted name that can be used in SQL queries.
*/
public $rawName;
public $quotedName;
/**
* @var boolean whether this column can be null.
*/
public $allowNull;
/**
* @var string the DB type of this column.
* @var string logical type of this column. Possible logic types include:
* string, text, boolean, integer, float, decimal, datetime, timestamp, time, date, binary
*/
public $dbType;
public $type;
/**
* @var string the PHP type of this column.
* @var string the PHP type of this column. Possible PHP types include:
* string, boolean, integer, double.
*/
public $type;
public $phpType;
/**
* @var string the DB type of this column.
*/
public $dbType;
/**
* @var mixed default value of this column
*/
......@@ -64,7 +68,6 @@ class CDbColumnSchema extends CComponent
public $isForeignKey;
/**
* @var boolean whether this column is auto-incremental
* @since 1.1.7
*/
public $autoIncrement = false;
......
framework/db/dao/Command.php
......@@ -78,7 +78,7 @@ class Command extends \yii\base\Component
* {@link setFetchMode FetchMode}. See {@link http://www.php.net/manual/en/function.PDOStatement-setFetchMode.php}
* for more details.
*/
public function __construct(CDbConnection $connection, $query = null)
public function __construct($connection, $query = null)
{
$this->_connection = $connection;
if (is_array($query))
......
framework/db/dao/Query.php
......@@ -24,6 +24,11 @@ class Query extends CComponent
* or an array of column names. Defaults to '*', meaning all columns.
*/
public $select;
/**
* @var string additional option that should be appended to the 'SELECT' keyword. For example,
* in MySQL, the option 'SQL_CALC_FOUND_ROWS' can be used.
*/
public $selectOption;
public $from;
/**
......
framework/db/dao/QueryBuilder.php
......@@ -20,7 +20,7 @@ class QueryBuilder extends \yii\base\Component
{
private $_connection;
public function __construct(Connection $connection)
public function __construct($connection)
{
$this->_connection = $connection;
}
......@@ -36,24 +36,228 @@ class QueryBuilder extends \yii\base\Component
public function build($query)
{
$clauses = array(
$this->buildSelect($query->select, $query->distinct),
$this->buildFrom($query->from),
$this->buildJoin($query->join),
$this->buildWhere($query->where),
$this->buildGroupBy($query->groupBy),
$this->buildHaving($query->having),
$this->buildOrderBy($query->orderBy),
$this->buildLimit($query->offset, $query->limit),
$this->buildUnion($query->union),
$this->buildSelect($query),
$this->buildFrom($query),
$this->buildJoin($query),
$this->buildWhere($query),
$this->buildGroupBy($query),
$this->buildHaving($query),
$this->buildUnion($query),
$this->buildOrderBy($query),
$this->buildLimit($query),
);
return implode("\n", array_filter($clauses));
}
protected function buildSelect($columns, $distinct)
/**
* Builds a SQL statement for creating a new DB table.
*
* The columns in the new table should be specified as name-definition pairs (e.g. 'name'=>'string'),
* where name stands for a column name which will be properly quoted by the method, and definition
* stands for the column type which can contain an abstract DB type.
* The {@link getColumnType} method will be invoked to convert any abstract type into a physical one.
*
* If a column is specified with definition only (e.g. 'PRIMARY KEY (name, type)'), it will be directly
* inserted into the generated SQL.
*
* @param string $table the name of the table to be created. The name will be properly quoted by the method.
* @param array $columns the columns (name=>definition) in the new table.
* @param string $options additional SQL fragment that will be appended to the generated SQL.
* @return string the SQL statement for creating a new DB table.
*/
public function createTable($table, $columns, $options = null)
{
$cols = array();
foreach ($columns as $name => $type)
{
$select = $distinct ? 'SELECT DISTINCT' : 'SELECT';
if (is_string($name))
$cols[] = "\t" . $this->quoteColumnName($name) . ' ' . $this->getColumnType($type);
else
$cols[] = "\t" . $type;
}
$sql = "CREATE TABLE " . $this->quoteTableName($table) . " (\n" . implode(",\n", $cols) . "\n)";
return $options === null ? $sql : $sql . ' ' . $options;
}
/**
* Builds a SQL statement for renaming a DB table.
* @param string $table the table to be renamed. The name will be properly quoted by the method.
* @param string $newName the new table name. The name will be properly quoted by the method.
* @return string the SQL statement for renaming a DB table.
*/
public function renameTable($table, $newName)
{
return 'RENAME TABLE ' . $this->quoteTableName($table) . ' TO ' . $this->quoteTableName($newName);
}
/**
* Builds a SQL statement for dropping a DB table.
* @param string $table the table to be dropped. The name will be properly quoted by the method.
* @return string the SQL statement for dropping a DB table.
*/
public function dropTable($table)
{
return "DROP TABLE " . $this->quoteTableName($table);
}
/**
* 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 "TRUNCATE TABLE " . $this->quoteTableName($table);
}
/**
* Builds a SQL statement for adding a new DB column.
* @param string $table the table that the new column will be added to. The table name will be properly quoted by the method.
* @param string $column the name of the new column. The name will be properly quoted by the method.
* @param string $type the column type. The {@link getColumnType} method will be invoked to convert abstract column type (if any)
* into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL.
* For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'.
* @return string the SQL statement for adding a new column.
* @since 1.1.6
*/
public function addColumn($table, $column, $type)
{
return 'ALTER TABLE ' . $this->quoteTableName($table)
. ' ADD ' . $this->quoteColumnName($column) . ' '
. $this->getColumnType($type);
}
/**
* 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 $column the name of the column to be dropped. The name will be properly quoted by the method.
* @return string the SQL statement for dropping a DB column.
* @since 1.1.6
*/
public function dropColumn($table, $column)
{
return "ALTER TABLE " . $this->quoteTableName($table)
. " DROP COLUMN " . $this->quoteColumnName($column);
}
/**
* 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 $newName the new name of the column. The name will be properly quoted by the method.
* @return string the SQL statement for renaming a DB column.
* @since 1.1.6
*/
public function renameColumn($table, $name, $newName)
{
return "ALTER TABLE " . $this->quoteTableName($table)
. " RENAME COLUMN " . $this->quoteColumnName($name)
. " TO " . $this->quoteColumnName($newName);
}
/**
* 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 $type the new column type. The {@link getColumnType} method will be invoked to convert abstract column type (if any)
* into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL.
* For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'.
* @return string the SQL statement for changing the definition of a column.
*/
public function alterColumn($table, $column, $type)
{
return 'ALTER TABLE ' . $this->quoteTableName($table) . ' CHANGE '
. $this->quoteColumnName($column) . ' '
. $this->quoteColumnName($column) . ' '
. $this->getColumnType($type);
}
/**
* 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 $columns the name of the column to that the constraint will be added on. If there are multiple columns, separate them with commas.
* @param string $refTable the table that the foreign key references to.
* @param string $refColumns the name of the column that the foreign key references to. If there are multiple columns, separate them with commas.
* @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)
{
$columns = preg_split('/\s*,\s*/', $columns, -1, PREG_SPLIT_NO_EMPTY);
foreach ($columns as $i => $col)
$columns[$i] = $this->quoteColumnName($col);
$refColumns = preg_split('/\s*,\s*/', $refColumns, -1, PREG_SPLIT_NO_EMPTY);
foreach ($refColumns as $i => $col)
$refColumns[$i] = $this->quoteColumnName($col);
$sql = 'ALTER TABLE ' . $this->quoteTableName($table)
. ' ADD CONSTRAINT ' . $this->quoteColumnName($name)
. ' FOREIGN KEY (' . implode(', ', $columns) . ')'
. ' REFERENCES ' . $this->quoteTableName($refTable)
. ' (' . implode(', ', $refColumns) . ')';
if ($delete !== null)
$sql .= ' ON DELETE ' . $delete;
if ($update !== null)
$sql .= ' ON UPDATE ' . $update;
return $sql;
}
/**
* 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)
{
return 'ALTER TABLE ' . $this->quoteTableName($table)
. ' DROP CONSTRAINT ' . $this->quoteColumnName($name);
}
/**
* Builds a SQL statement for creating a new index.
* @param string $name the name of the index. The name will be properly quoted by the method.
* @param string $table the table that the new index will be created for. The table name will be properly quoted by the method.
* @param string $column the column(s) that should be included in the index. If there are multiple columns, please separate them
* by commas. Each column name will be properly quoted by the method, unless a parenthesis is found in the name.
* @param boolean $unique whether to add UNIQUE constraint on the created index.
* @return string the SQL statement for creating a new index.
*/
public function createIndex($name, $table, $column, $unique = false)
{
$cols = array();
$columns = preg_split('/\s*,\s*/', $column, -1, PREG_SPLIT_NO_EMPTY);
foreach ($columns as $col)
{
if (strpos($col, '(') !== false)
$cols[] = $col;
else
$cols[] = $this->quoteColumnName($col);
}
return ($unique ? 'CREATE UNIQUE INDEX ' : 'CREATE INDEX ')
. $this->quoteTableName($name) . ' ON '
. $this->quoteTableName($table) . ' (' . implode(', ', $cols) . ')';
}
/**
* 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 ' . $this->quoteTableName($name) . ' ON ' . $this->quoteTableName($table);
}
protected function buildSelect($query)
{
$select = $query->distinct ? 'SELECT DISTINCT' : 'SELECT';
$columns = $query->select;
if (empty($columns)) {
return $select . ' *';
}
......@@ -70,8 +274,8 @@ class QueryBuilder extends \yii\base\Component
$columns[$i] = (string)$column;
}
elseif (strpos($column, '(') === false) {
if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)(.*)$/', $column, $matches)) {
$columns[$i] = $this->_connection->quoteColumnName($matches[1]) . ' AS ' . $this->_connection->quoteColumnName($matches[2]);
if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)([\w\-\.])$/', $column, $matches)) {
$columns[$i] = $this->_connection->quoteColumnName($matches[1]) . ' AS ' . $this->_connection->quoteSimpleColumnName($matches[2]);
}
else {
$columns[$i] = $this->_connection->quoteColumnName($column);
......@@ -82,10 +286,11 @@ class QueryBuilder extends \yii\base\Component
return $select . ' ' . implode(', ', $columns);
}
protected function buildFrom($tables)
protected function buildFrom($query)
{
$tables = $query->from;
if (is_string($tables) && strpos($tables, '(') !== false) {
return $tables;
return 'FROM ' . $tables;
}
if (!is_array($tables)) {
......@@ -93,7 +298,7 @@ class QueryBuilder extends \yii\base\Component
}
foreach ($tables as $i => $table) {
if (strpos($table, '(') === false) {
if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)(.*)$/', $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]);
}
else {
......@@ -101,302 +306,211 @@ class QueryBuilder extends \yii\base\Component
}
}
}
return implode(', ', $tables);
}
$this->buildJoin($query->join),
$this->buildWhere($query->where),
$this->buildGroupBy($query->groupBy),
$this->buildHaving($query->having),
$this->buildOrderBy($query->orderBy),
$this->buildLimit($query->offset, $query->limit),
return 'FROM ' . implode(', ', $tables);
}
if (isset($query['union']))
$sql .= "\nUNION (\n" . (is_array($query['union']) ? implode("\n) UNION (\n", $query['union']) : $query['union']) . ')';
protected function buildJoin($query)
{
$joins = $query->join;
if (empty($joins)) {
return '';
}
if (is_string($joins)) {
return $joins;
}
return $sql;
foreach ($joins as $i => $join) {
if (is_array($join)) { // join type, table name, on-condition
if (isset($join[0], $join[1])) {
$table = $join[1];
if (strpos($table,'(')===false) {
if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)(.*)$/', $table, $matches)) { // with alias
$table = $this->_connection->quoteTableName($matches[1]).' '.$this->_connection->quoteTableName($matches[2]);
}
else {
$table = $this->_connection->quoteTableName($table);
}
}
$joins[$i] = strtoupper($join[0]) . ' ' . $table;
if (isset($join[2])) { // join condition
$condition = $this->processCondition($join[2]);
$joins[$i] .= ' ON ' . $condition;
}
}
else {
throw new Exception('The join clause may be specified as an array of at least two elements.');
}
}
}
return implode("\n", $joins);
}
/**
* Sets the WHERE part of the query.
*
* The method requires a $conditions parameter, and optionally a $params parameter
* specifying the values to be bound to the query.
*
* The $conditions parameter should be either a string (e.g. 'id=1') or an array.
* If the latter, it must be of the format <code>array(operator, operand1, operand2, ...)</code>,
* where the operator can be one of the followings, and the possible operands depend on the corresponding
* operator:
* <ul>
* <li><code>and</code>: the operands should be concatenated together using AND. For example,
* array('and', 'id=1', 'id=2') will generate 'id=1 AND id=2'. If an operand is an array,
* it will be converted into a string using the same rules described here. For example,
* array('and', 'type=1', array('or', 'id=1', 'id=2')) will generate 'type=1 AND (id=1 OR id=2)'.
* The method will NOT do any quoting or escaping.</li>
* <li><code>or</code>: similar as the <code>and</code> operator except that the operands are concatenated using OR.</li>
* <li><code>in</code>: operand 1 should be a column or DB expression, and operand 2 be an array representing
* the range of the values that the column or DB expression should be in. For example,
* array('in', 'id', array(1,2,3)) will generate 'id IN (1,2,3)'.
* The method will properly quote the column name and escape values in the range.</li>
* <li><code>not in</code>: similar as the <code>in</code> operator except that IN is replaced with NOT IN in the generated condition.</li>
* <li><code>like</code>: operand 1 should be a column or DB expression, and operand 2 be a string or an array representing
* the values that the column or DB expression should be like.
* For example, array('like', 'name', '%tester%') will generate "name LIKE '%tester%'".
* When the value range is given as an array, multiple LIKE predicates will be generated and concatenated using AND.
* For example, array('like', 'name', array('%test%', '%sample%')) will generate
* "name LIKE '%test%' AND name LIKE '%sample%'".
* The method will properly quote the column name and escape values in the range.</li>
* <li><code>not like</code>: similar as the <code>like</code> operator except that LIKE is replaced with NOT LIKE in the generated condition.</li>
* <li><code>or like</code>: similar as the <code>like</code> operator except that OR is used to concatenated the LIKE predicates.</li>
* <li><code>or not like</code>: similar as the <code>not like</code> operator except that OR is used to concatenated the NOT LIKE predicates.</li>
* </ul>
* @param mixed $conditions the conditions that should be put in the WHERE part.
* @param array $params the parameters (name=>value) to be bound to the query
* @return Command the command object itself
* @since 1.1.6
*/
public function where($conditions, $params = array())
protected function buildWhere($query)
{
$this->_query['where'] = $this->processConditions($conditions);
foreach ($params as $name => $value)
$this->params[$name] = $value;
return $this;
$where = $this->processConditions($query->where);
return empty($where) ? '' : 'WHERE ' . $where;
}
/**
* Appends an INNER JOIN part to the query.
* @param string $table the table to be joined.
* Table name can contain schema prefix (e.g. 'public.tbl_user') and/or table alias (e.g. 'tbl_user u').
* The method will automatically quote the table name unless it contains some parenthesis
* (which means the table is given as a sub-query or DB expression).
* @param mixed $conditions the join condition that should appear in the ON part.
* Please refer to {@link where} on how to specify conditions.
* @param array $params the parameters (name=>value) to be bound to the query
* @return Command the command object itself
* @since 1.1.6
*/
public function join($table, $conditions, $params = array())
protected function buildGroupBy($query)
{
return $this->joinInternal('join', $table, $conditions, $params);
$columns = $query->groupBy;
if (empty($columns)) {
return '';
}
if (is_string($columns) && strpos($columns, '(') !== false) {
return 'GROUP BY ' . $columns;
}
/**
* Sets the GROUP BY part of the query.
* @param mixed $columns the columns to be grouped by.
* Columns can be specified in either a string (e.g. "id, name") or an array (e.g. array('id', 'name')).
* The method will automatically quote the column names unless a column contains some parenthesis
* (which means the column contains a DB expression).
* @return Command the command object itself
* @since 1.1.6
*/
public function group($columns)
{
if (is_string($columns) && strpos($columns, '(') !== false)
$this->_query['group'] = $columns;
else
{
if (!is_array($columns))
if (!is_array($columns)) {
$columns = preg_split('/\s*,\s*/', trim($columns), -1, PREG_SPLIT_NO_EMPTY);
foreach ($columns as $i => $column)
{
if (is_object($column))
}
foreach ($columns as $i => $column) {
if (is_object($column)) {
$columns[$i] = (string)$column;
elseif (strpos($column, '(') === false)
}
elseif (strpos($column, '(') === false) {
$columns[$i] = $this->_connection->quoteColumnName($column);
}
$this->_query['group'] = implode(', ', $columns);
}
return $this;
return 'GROUP BY ' . implode(', ', $columns);
}
/**
* Sets the HAVING part of the query.
* @param mixed $conditions the conditions to be put after HAVING.
* Please refer to {@link where} on how to specify conditions.
* @param array $params the parameters (name=>value) to be bound to the query
* @return Command the command object itself
* @since 1.1.6
*/
public function having($conditions, $params = array())
protected function buildHaving($query)
{
$this->_query['having'] = $this->processConditions($conditions);
foreach ($params as $name => $value)
$this->params[$name] = $value;
return $this;
$having = $this->processConditions($query->having);
return empty($having) ? '' : 'HAVING ' . $having;
}
/**
* Sets the ORDER BY part of the query.
* @param mixed $columns the columns (and the directions) to be ordered by.
* Columns can be specified in either a string (e.g. "id ASC, name DESC") or an array (e.g. array('id ASC', 'name DESC')).
* The method will automatically quote the column names unless a column contains some parenthesis
* (which means the column contains a DB expression).
* @return Command the command object itself
* @since 1.1.6
*/
public function order($columns)
{
if (is_string($columns) && strpos($columns, '(') !== false)
$this->_query['order'] = $columns;
else
protected function buildOrderBy($query)
{
if (!is_array($columns))
$columns = $query->orderBy;
if (empty($columns)) {
return '';
}
if (is_string($columns) && strpos($columns, '(') !== false) {
return 'ORDER BY ' . $columns;
}
if (!is_array($columns)) {
$columns = preg_split('/\s*,\s*/', trim($columns), -1, PREG_SPLIT_NO_EMPTY);
foreach ($columns as $i => $column)
{
if (is_object($column))
}
foreach ($columns as $i => $column) {
if (is_object($column)) {
$columns[$i] = (string)$column;
elseif (strpos($column, '(') === false)
{
if (preg_match('/^(.*?)\s+(asc|desc)$/i', $column, $matches))
}
elseif (strpos($column, '(') === false) {
if (preg_match('/^(.*?)\s+(asc|desc)$/i', $column, $matches)) {
$columns[$i] = $this->_connection->quoteColumnName($matches[1]) . ' ' . strtoupper($matches[2]);
else
}
else {
$columns[$i] = $this->_connection->quoteColumnName($column);
}
}
$this->_query['order'] = implode(', ', $columns);
}
return $this;
return 'ORDER BY ' . implode(', ', $columns);
}
/**
* Sets the LIMIT part of the query.
* @param integer $limit the limit
* @param integer $offset the offset
* @return Command the command object itself
* @since 1.1.6
*/
public function limit($limit, $offset = null)
protected function buildLimit($query)
{
$this->_query['limit'] = (int)$limit;
if ($offset !== null)
$this->offset($offset);
return $this;
$sql = '';
if ($query->limit !== null && $query->limit >= 0) {
$sql = 'LIMIT ' . (int)$query->limit;
}
if ($query->offset>0) {
$sql .= ' OFFSET '.(int)$query->offset;
}
return ltrim($sql);
}
/**
* Appends a SQL statement using UNION operator.
* @param string $sql the SQL statement to be appended using UNION
* @return Command the command object itself
* @since 1.1.6
*/
public function union($sql)
protected function buildUnion($query)
{
if (isset($this->_query['union']) && is_string($this->_query['union']))
$this->_query['union'] = array($this->_query['union']);
$this->_query['union'][] = $sql;
return $this;
$unions = $query->union;
if (empty($unions)) {
return '';
}
if (!is_array($unions)) {
$unions = array($unions);
}
foreach ($unions as $i => $union) {
if ($union instanceof Query) {
$unions[$i] = $union->getSql($this->_connection);
}
}
return "UNION (\n" . implode("\n) UNION (\n", $unions) . "\n)";
}
/**
* Generates the condition string that will be put in the WHERE part
* @param mixed $conditions the conditions that will be put in the WHERE part.
* @return string the condition string to put in the WHERE part
*/
private function buildConditions($conditions)
protected function processCondition($conditions)
{
if (!is_array($conditions))
if (!is_array($conditions)) {
return $conditions;
elseif ($conditions === array())
}
elseif ($conditions === array()) {
return '';
}
$n = count($conditions);
$operator = strtoupper($conditions[0]);
if ($operator === 'OR' || $operator === 'AND')
{
if ($operator === 'OR' || $operator === 'AND') {
$parts = array();
for ($i = 1;$i < $n;++$i)
{
$condition = $this->processConditions($conditions[$i]);
if ($condition !== '')
for ($i = 1; $i < $n; ++$i) {
$condition = $this->processCondition($conditions[$i]);
if ($condition !== '') {
$parts[] = '(' . $condition . ')';
}
}
return $parts === array() ? '' : implode(' ' . $operator . ' ', $parts);
}
if (!isset($conditions[1], $conditions[2]))
if (!isset($conditions[1], $conditions[2])) {
return '';
}
$column = $conditions[1];
if (strpos($column, '(') === false)
if (strpos($column, '(') === false) {
$column = $this->_connection->quoteColumnName($column);
}
$values = $conditions[2];
if (!is_array($values))
if (!is_array($values)) {
$values = array($values);
}
if ($operator === 'IN' || $operator === 'NOT IN')
{
if ($values === array())
if ($operator === 'IN' || $operator === 'NOT IN') {
if ($values === array()) {
return $operator === 'IN' ? '0=1' : '';
foreach ($values as $i => $value)
{
if (is_string($value))
}
foreach ($values as $i => $value) {
if (is_string($value)) {
$values[$i] = $this->_connection->quoteValue($value);
else
}
else {
$values[$i] = (string)$value;
}
}
return $column . ' ' . $operator . ' (' . implode(', ', $values) . ')';
}
if ($operator === 'LIKE' || $operator === 'NOT LIKE' || $operator === 'OR LIKE' || $operator === 'OR NOT LIKE')
{
if ($values === array())
if ($operator === 'LIKE' || $operator === 'NOT LIKE' || $operator === 'OR LIKE' || $operator === 'OR NOT LIKE') {
if ($values === array()) {
return $operator === 'LIKE' || $operator === 'OR LIKE' ? '0=1' : '';
}
if ($operator === 'LIKE' || $operator === 'NOT LIKE')
if ($operator === 'LIKE' || $operator === 'NOT LIKE') {
$andor = ' AND ';
else
{
}
else {
$andor = ' OR ';
$operator = $operator === 'OR LIKE' ? 'LIKE' : 'NOT LIKE';
}
$expressions = array();
foreach ($values as $value)
foreach ($values as $value) {
$expressions[] = $column . ' ' . $operator . ' ' . $this->_connection->quoteValue($value);
return implode($andor, $expressions);
}
throw new CDbException(Yii::t('yii', 'Unknown operator "{operator}".', array('{operator}' => $operator)));
}
/**
* Appends an JOIN part to the query.
* @param string $type the join type ('join', 'left join', 'right join', 'cross join', 'natural join')
* @param string $table the table to be joined.
* Table name can contain schema prefix (e.g. 'public.tbl_user') and/or table alias (e.g. 'tbl_user u').
* The method will automatically quote the table name unless it contains some parenthesis
* (which means the table is given as a sub-query or DB expression).
* @param mixed $conditions the join condition that should appear in the ON part.
* Please refer to {@link where} on how to specify conditions.
* @param array $params the parameters (name=>value) to be bound to the query
* @return Command the command object itself
* @since 1.1.6
*/
private function joinInternal($type, $table, $conditions = '', $params = array())
{
if (strpos($table, '(') === false)
{
if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)(.*)$/', $table, $matches)) // with alias
$table = $this->_connection->quoteTableName($matches[1]) . ' ' . $this->_connection->quoteTableName($matches[2]);
else
$table = $this->_connection->quoteTableName($table);
return implode($andor, $expressions);
}
$conditions = $this->processConditions($conditions);
if ($conditions != '')
$conditions = ' ON ' . $conditions;
if (isset($this->_query['join']) && is_string($this->_query['join']))
$this->_query['join'] = array($this->_query['join']);
$this->_query['join'][] = strtoupper($type) . ' ' . $table . $conditions;
foreach ($params as $name => $value)
$this->params[$name] = $value;
return $this;
throw new Exception('Unknown operator: ' . $operator);
}
}
framework/db/dao/Schema.php
<?php
/**
* CDbSchema class file.
* Schema class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
......@@ -8,15 +8,15 @@
* @license http://www.yiiframework.com/license/
*/
namespace yii\db\dao;
/**
* CDbSchema is the base class for retrieving metadata information.
* Schema is the base class for retrieving metadata information.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @version $Id: CDbSchema.php 3359 2011-07-18 11:25:17Z qiang.xue $
* @package system.db.schema
* @since 1.0
* @since 2.0
*/
abstract class CDbSchema extends CComponent
abstract class Schema extends \yii\base\Component
{
/**
* @var array the abstract column types mapped to physical column types.
......@@ -41,10 +41,10 @@ abstract class CDbSchema extends CComponent
* Constructor.
* @param CDbConnection $conn database connection.
*/
public function __construct($conn)
public function __construct($connection)
{
$this->_connection = $conn;
foreach ($conn->schemaCachingExclude as $name)
$this->_connection = $connection;
foreach ($connection->schemaCachingExclude as $name)
$this->_cacheExclude[$name] = true;
}
......@@ -342,215 +342,4 @@ abstract class CDbSchema extends CComponent
return $type;
}
/**
* Builds a SQL statement for creating a new DB table.
*
* The columns in the new table should be specified as name-definition pairs (e.g. 'name'=>'string'),
* where name stands for a column name which will be properly quoted by the method, and definition
* stands for the column type which can contain an abstract DB type.
* The {@link getColumnType} method will be invoked to convert any abstract type into a physical one.
*
* If a column is specified with definition only (e.g. 'PRIMARY KEY (name, type)'), it will be directly
* inserted into the generated SQL.
*
* @param string $table the name of the table to be created. The name will be properly quoted by the method.
* @param array $columns the columns (name=>definition) in the new table.
* @param string $options additional SQL fragment that will be appended to the generated SQL.
* @return string the SQL statement for creating a new DB table.
* @since 1.1.6
*/
public function createTable($table, $columns, $options = null)
{
$cols = array();
foreach ($columns as $name => $type)
{
if (is_string($name))
$cols[] = "\t" . $this->quoteColumnName($name) . ' ' . $this->getColumnType($type);
else
$cols[] = "\t" . $type;
}
$sql = "CREATE TABLE " . $this->quoteTableName($table) . " (\n" . implode(",\n", $cols) . "\n)";
return $options === null ? $sql : $sql . ' ' . $options;
}
/**
* Builds a SQL statement for renaming a DB table.
* @param string $table the table to be renamed. The name will be properly quoted by the method.
* @param string $newName the new table name. The name will be properly quoted by the method.
* @return string the SQL statement for renaming a DB table.
* @since 1.1.6
*/
public function renameTable($table, $newName)
{
return 'RENAME TABLE ' . $this->quoteTableName($table) . ' TO ' . $this->quoteTableName($newName);
}
/**
* Builds a SQL statement for dropping a DB table.
* @param string $table the table to be dropped. The name will be properly quoted by the method.
* @return string the SQL statement for dropping a DB table.
* @since 1.1.6
*/
public function dropTable($table)
{
return "DROP TABLE " . $this->quoteTableName($table);
}
/**
* Builds a SQL statement for truncating a DB table.
* @param string $table the table to be truncated. The name will be properly quoted by the method.
* @return string the SQL statement for truncating a DB table.
* @since 1.1.6
*/
public function truncateTable($table)
{
return "TRUNCATE TABLE " . $this->quoteTableName($table);
}
/**
* Builds a SQL statement for adding a new DB column.
* @param string $table the table that the new column will be added to. The table name will be properly quoted by the method.
* @param string $column the name of the new column. The name will be properly quoted by the method.
* @param string $type the column type. The {@link getColumnType} method will be invoked to convert abstract column type (if any)
* into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL.
* For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'.
* @return string the SQL statement for adding a new column.
* @since 1.1.6
*/
public function addColumn($table, $column, $type)
{
return 'ALTER TABLE ' . $this->quoteTableName($table)
. ' ADD ' . $this->quoteColumnName($column) . ' '
. $this->getColumnType($type);
}
/**
* 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 $column the name of the column to be dropped. The name will be properly quoted by the method.
* @return string the SQL statement for dropping a DB column.
* @since 1.1.6
*/
public function dropColumn($table, $column)
{
return "ALTER TABLE " . $this->quoteTableName($table)
. " DROP COLUMN " . $this->quoteColumnName($column);
}
/**
* 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 $newName the new name of the column. The name will be properly quoted by the method.
* @return string the SQL statement for renaming a DB column.
* @since 1.1.6
*/
public function renameColumn($table, $name, $newName)
{
return "ALTER TABLE " . $this->quoteTableName($table)
. " RENAME COLUMN " . $this->quoteColumnName($name)
. " TO " . $this->quoteColumnName($newName);
}
/**
* 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 $type the new column type. The {@link getColumnType} method will be invoked to convert abstract column type (if any)
* into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL.
* For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'.
* @return string the SQL statement for changing the definition of a column.
* @since 1.1.6
*/
public function alterColumn($table, $column, $type)
{
return 'ALTER TABLE ' . $this->quoteTableName($table) . ' CHANGE '
. $this->quoteColumnName($column) . ' '
. $this->quoteColumnName($column) . ' '
. $this->getColumnType($type);
}
/**
* 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 $columns the name of the column to that the constraint will be added on. If there are multiple columns, separate them with commas.
* @param string $refTable the table that the foreign key references to.
* @param string $refColumns the name of the column that the foreign key references to. If there are multiple columns, separate them with commas.
* @param string $delete the ON DELETE option. Most DBMS support these options: RESTRICT, CASCADE, NO ACTION, SET DEFAULT, SET NULL
* @param string $update the ON UPDATE option. Most DBMS support these options: RESTRICT, CASCADE, NO ACTION, SET DEFAULT, SET NULL
* @return string the SQL statement for adding a foreign key constraint to an existing table.
* @since 1.1.6
*/
public function addForeignKey($name, $table, $columns, $refTable, $refColumns, $delete = null, $update = null)
{
$columns = preg_split('/\s*,\s*/', $columns, -1, PREG_SPLIT_NO_EMPTY);
foreach ($columns as $i => $col)
$columns[$i] = $this->quoteColumnName($col);
$refColumns = preg_split('/\s*,\s*/', $refColumns, -1, PREG_SPLIT_NO_EMPTY);
foreach ($refColumns as $i => $col)
$refColumns[$i] = $this->quoteColumnName($col);
$sql = 'ALTER TABLE ' . $this->quoteTableName($table)
. ' ADD CONSTRAINT ' . $this->quoteColumnName($name)
. ' FOREIGN KEY (' . implode(', ', $columns) . ')'
. ' REFERENCES ' . $this->quoteTableName($refTable)
. ' (' . implode(', ', $refColumns) . ')';
if ($delete !== null)
$sql .= ' ON DELETE ' . $delete;
if ($update !== null)
$sql .= ' ON UPDATE ' . $update;
return $sql;
}
/**
* 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 $table the table whose foreign is to be dropped. The name will be properly quoted by the method.
* @return string the SQL statement for dropping a foreign key constraint.
* @since 1.1.6
*/
public function dropForeignKey($name, $table)
{
return 'ALTER TABLE ' . $this->quoteTableName($table)
. ' DROP CONSTRAINT ' . $this->quoteColumnName($name);
}
/**
* Builds a SQL statement for creating a new index.
* @param string $name the name of the index. The name will be properly quoted by the method.
* @param string $table the table that the new index will be created for. The table name will be properly quoted by the method.
* @param string $column the column(s) that should be included in the index. If there are multiple columns, please separate them
* by commas. Each column name will be properly quoted by the method, unless a parenthesis is found in the name.
* @param boolean $unique whether to add UNIQUE constraint on the created index.
* @return string the SQL statement for creating a new index.
* @since 1.1.6
*/
public function createIndex($name, $table, $column, $unique = false)
{
$cols = array();
$columns = preg_split('/\s*,\s*/', $column, -1, PREG_SPLIT_NO_EMPTY);
foreach ($columns as $col)
{
if (strpos($col, '(') !== false)
$cols[] = $col;
else
$cols[] = $this->quoteColumnName($col);
}
return ($unique ? 'CREATE UNIQUE INDEX ' : 'CREATE INDEX ')
. $this->quoteTableName($name) . ' ON '
. $this->quoteTableName($table) . ' (' . implode(', ', $cols) . ')';
}
/**
* 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 $table the table whose index is to be dropped. The name will be properly quoted by the method.
* @return string the SQL statement for dropping an index.
* @since 1.1.6
*/
public function dropIndex($name, $table)
{
return 'DROP INDEX ' . $this->quoteTableName($name) . ' ON ' . $this->quoteTableName($table);
}
}
framework/db/dao/TableSchema.php
<?php
/**
* CDbTableSchema class file.
* TableSchema class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
......@@ -8,12 +8,14 @@
* @license http://www.yiiframework.com/license/
*/
namespace yii\db\dao;
/**
* CDbTableSchema is the base class for representing the metadata of a database table.
* TableSchema is the base class for representing the metadata of a database table.
*
* It may be extended by different DBMS driver to provide DBMS-specific table metadata.
*
* CDbTableSchema provides the following information about a table:
* TableSchema provides the following information about a table:
* <ul>
* <li>{@link name}</li>
* <li>{@link rawName}</li>
......@@ -24,20 +26,22 @@
* </ul>
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @version $Id: CDbTableSchema.php 2799 2011-01-01 19:31:13Z qiang.xue $
* @package system.db.schema
* @since 1.0
* @since 2.0
*/
class CDbTableSchema extends CComponent
class TableSchema extends \yii\base\Component
{
/**
* @var string name of the schema that this table belongs to.
*/
public $schemaName;
/**
* @var string name of this table.
*/
public $name;
/**
* @var string raw name of this table. This is the quoted version of table name with optional schema name. It can be directly used in SQLs.
* @var string quoted name of this table. This may include [[schemaName]] if it is not empty.
*/
public $rawName;
public $quotedName;
/**
* @var string|array primary key name of this table. If composite key, an array of key names is returned.
*/
......@@ -51,7 +55,7 @@ class CDbTableSchema extends CComponent
*/
public $foreignKeys = array();
/**
* @var array column metadata of this table. Each array element is a CDbColumnSchema object, indexed by column names.
* @var array column metadata of this table. Each array element is a [[ColumnSchema]] object, indexed by column names.
*/
public $columns = array();
......
framework/db/dao/mysql/ColumnSchema.php 0 → 100644
<?php
/**
* ColumnSchema 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/
*/
/**
* ColumnSchema class describes the column meta data of a MySQL table.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
class ColumnSchema extends \yii\db\dao\ColumnSchema
{
/**
* Extracts the PHP type from DB type.
* @param string $dbType DB type
*/
protected function extractType($dbType)
{
if (strncmp($dbType, 'enum', 4) === 0)
$this->type = 'string';
elseif (strpos($dbType, 'float') !== false || strpos($dbType, 'double') !== false)
$this->type = 'double';
elseif (strpos($dbType, 'bool') !== false)
$this->type = 'boolean';
elseif (strpos($dbType, 'int') === 0 && strpos($dbType, 'unsigned') === false || preg_match('/(bit|tinyint|smallint|mediumint)/', $dbType))
$this->type = 'integer';
else
$this->type = 'string';
}
/**
* Extracts the default value for the column.
* The value is typecasted to correct PHP type.
* @param mixed $defaultValue the default value obtained from metadata
*/
protected function extractDefault($defaultValue)
{
if ($this->dbType === 'timestamp' && $defaultValue === 'CURRENT_TIMESTAMP')
$this->defaultValue = null;
else
parent::extractDefault($defaultValue);
}
/**
* Extracts size, precision and scale information from column's DB type.
* @param string $dbType the column's DB type
*/
protected function extractLimit($dbType)
{
if (strncmp($dbType, 'enum', 4) === 0 && preg_match('/\((.*)\)/', $dbType, $matches))
{
$values = explode(',', $matches[1]);
$size = 0;
foreach ($values as $value)
{
if (($n = strlen($value)) > $size)
$size = $n;
}
$this->size = $this->precision = $size-2;
}
else
parent::extractLimit($dbType);
}
}
\ No newline at end of file
framework/db/dao/mysql/Schema.php 0 → 100644
<?php
/**
* CMysqlSchema class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright Copyright &copy; 2008-2011 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
/**
* CMysqlSchema is the class for retrieving metadata information from a MySQL database (version 4.1.x and 5.x).
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @version $Id: CMysqlSchema.php 3304 2011-06-23 14:53:50Z qiang.xue $
* @package system.db.schema.mysql
* @since 1.0
*/
class CMysqlSchema extends CDbSchema
{
/**
* @var array the abstract column types mapped to physical column types.
* @since 1.1.6
*/
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)',
);
/**
* Quotes a table name for use in a query.
* A simple table name does not schema prefix.
* @param string $name table name
* @return string the properly quoted table name
* @since 1.1.6
*/
public function quoteSimpleTableName($name)
{
return '`' . $name . '`';
}
/**
* Quotes a column name for use in a query.
* A simple column name does not contain prefix.
* @param string $name column name
* @return string the properly quoted column name
* @since 1.1.6
*/
public function quoteSimpleColumnName($name)
{
return '`' . $name . '`';
}
/**
* Compares two table names.
* The table names can be either quoted or unquoted. This method
* will consider both cases.
* @param string $name1 table name 1
* @param string $name2 table name 2
* @return boolean whether the two table names refer to the same table.
*/
public function compareTableNames($name1, $name2)
{
return parent::compareTableNames(strtolower($name1), strtolower($name2));
}
/**
* 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, $value = null)
{
if ($table->sequenceName !== null)
{
if ($value === null)
$value = $this->getDbConnection()->createCommand("SELECT MAX(` {$table->primaryKey}`) FROM {$table->rawName}")->queryScalar() + 1;
else
$value = (int)$value;
$this->getDbConnection()->createCommand("ALTER TABLE {$table->rawName} AUTO_INCREMENT=$value")->execute();
}
}
/**
* 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 = '')
{
$this->getDbConnection()->createCommand('SET FOREIGN_KEY_CHECKS=' . ($check ? 1 : 0))->execute();
}
/**
* Loads the metadata for the specified table.
* @param string $name table name
* @return CMysqlTableSchema driver dependent table metadata. Null if the table does not exist.
*/
protected function loadTable($name)
{
$table = new CMysqlTableSchema;
$this->resolveTableNames($table, $name);
if ($this->findColumns($table))
{
$this->findConstraints($table);
return $table;
}
else
return null;
}
/**
* Generates various kinds of table names.
* @param CMysqlTableSchema $table the table instance
* @param string $name the unquoted table name
*/
protected function resolveTableNames($table, $name)
{
$parts = explode('.', str_replace('`', '', $name));
if (isset($parts[1]))
{
$table->schemaName = $parts[0];
$table->name = $parts[1];
$table->rawName = $this->quoteTableName($table->schemaName) . '.' . $this->quoteTableName($table->name);
}
else
{
$table->name = $parts[0];
$table->rawName = $this->quoteTableName($table->name);
}
}
/**
* Collects the table column metadata.
* @param CMysqlTableSchema $table the table metadata
* @return boolean whether the table exists in the database
*/
protected function findColumns($table)
{
$sql = 'SHOW COLUMNS FROM ' . $table->rawName;
try
{
$columns = $this->getDbConnection()->createCommand($sql)->queryAll();
}
catch(Exception $e)
{
return false;
}
foreach ($columns as $column)
{
$c = $this->createColumn($column);
$table->columns[$c->name] = $c;
if ($c->isPrimaryKey)
{
if ($table->primaryKey === null)
$table->primaryKey = $c->name;
elseif (is_string($table->primaryKey))
$table->primaryKey = array($table->primaryKey, $c->name);
else
$table->primaryKey[] = $c->name;
if ($c->autoIncrement)
$table->sequenceName = '';
}
}
return true;
}
/**
* Creates a table column.
* @param array $column column metadata
* @return CDbColumnSchema normalized column metadata
*/
protected function createColumn($column)
{
$c = new CMysqlColumnSchema;
$c->name = $column['Field'];
$c->rawName = $this->quoteColumnName($c->name);
$c->allowNull = $column['Null'] === 'YES';
$c->isPrimaryKey = strpos($column['Key'], 'PRI') !== false;
$c->isForeignKey = false;
$c->init($column['Type'], $column['Default']);
$c->autoIncrement = strpos(strtolower($column['Extra']), 'auto_increment') !== false;
return $c;
}
/**
* @return float server version.
*/
protected function getServerVersion()
{
$version = $this->getDbConnection()->getAttribute(PDO::ATTR_SERVER_VERSION);
$digits = array();
preg_match('/(\d+)\.(\d+)\.(\d+)/', $version, $digits);
return floatval($digits[1] . '.' . $digits[2] . $digits[3]);
}
/**
* Collects the foreign key column details for the given table.
* @param CMysqlTableSchema $table the table metadata
*/
protected function findConstraints($table)
{
$row = $this->getDbConnection()->createCommand('SHOW CREATE TABLE ' . $table->rawName)->queryRow();
$matches = array();
$regexp = '/FOREIGN KEY\s+\(([^\)]+)\)\s+REFERENCES\s+([^\(^\s]+)\s*\(([^\)]+)\)/mi';
foreach ($row as $sql)
{
if (preg_match_all($regexp, $sql, $matches, PREG_SET_ORDER))
break;
}
foreach ($matches as $match)
{
$keys = array_map('trim', explode(',', str_replace('`', '', $match[1])));
$fks = array_map('trim', explode(',', str_replace('`', '', $match[3])));
foreach ($keys as $k => $name)
{
$table->foreignKeys[$name] = array(str_replace('`', '', $match[2]), $fks[$k]);
if (isset($table->columns[$name]))
$table->columns[$name]->isForeignKey = true;
}
}
}
/**
* Returns all table names in the database.
* @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema.
* If not empty, the returned table names will be prefixed with the schema name.
* @return array all table names in the database.
* @since 1.0.2
*/
protected function findTableNames($schema = '')
{
if ($schema === '')
return $this->getDbConnection()->createCommand('SHOW TABLES')->queryColumn();
$names = $this->getDbConnection()->createCommand('SHOW TABLES FROM ' . $this->quoteTableName($schema))->queryColumn();
foreach ($names as &$name)
$name = $schema . '.' . $name;
return $names;
}
/**
* 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 $newName the new name of the column. The name will be properly quoted by the method.
* @return string the SQL statement for renaming a DB column.
* @since 1.1.6
*/
public function renameColumn($table, $name, $newName)
{
$db = $this->getDbConnection();
$row = $db->createCommand('SHOW CREATE TABLE ' . $db->quoteTableName($table))->queryRow();
if ($row === false)
throw new CDbException(Yii::t('yii', 'Unable to find "{column}" in table "{table}".', array('{column}' => $name, '{table}' => $table)));
if (isset($row['Create Table']))
$sql = $row['Create Table'];
else
{
$row = array_values($row);
$sql = $row[1];
}
if (preg_match_all('/^\s*`(.*?)`\s+(.*?),?$/m', $sql, $matches))
{
foreach ($matches[1] as $i => $c)
{
if ($c === $name)
{
return "ALTER TABLE " . $db->quoteTableName($table)
. " CHANGE " . $db->quoteColumnName($name)
. ' ' . $db->quoteColumnName($newName) . ' ' . $matches[2][$i];
}
}
}
// try to give back a SQL anyway
return "ALTER TABLE " . $db->quoteTableName($table)
. " CHANGE " . $db->quoteColumnName($name) . ' ' . $newName;
}
/**
* 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 $table the table whose foreign is to be dropped. The name will be properly quoted by the method.
* @return string the SQL statement for dropping a foreign key constraint.
* @since 1.1.6
*/
public function dropForeignKey($name, $table)
{
return 'ALTER TABLE ' . $this->quoteTableName($table)
. ' DROP FOREIGN KEY ' . $this->quoteColumnName($name);
}
}
framework/db/dao/mysql/TableSchema.php 0 → 100644
<?php
/**
* TableSchema 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/
*/
/**
* TableSchema represents the metadata for a MySQL table.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
class TableSchema extends CDbTableSchema
{
/**
* @var string name of the schema (database) that this table belongs to.
* Defaults to null, meaning no schema (or the current database).
*/
public $schemaName;
}
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