457 lines
13 KiB
PHP
457 lines
13 KiB
PHP
<?php
|
|
/**
|
|
* @link http://www.yiiframework.com/
|
|
* @copyright Copyright (c) 2008 Yii Software LLC
|
|
* @license http://www.yiiframework.com/license/
|
|
*/
|
|
|
|
namespace yii\db;
|
|
|
|
use Yii;
|
|
use yii\base\BaseObject;
|
|
use yii\helpers\StringHelper;
|
|
|
|
/**
|
|
* ColumnSchemaBuilder helps to define database schema types using a PHP interface.
|
|
*
|
|
* See [[SchemaBuilderTrait]] for more detailed description and usage examples.
|
|
*
|
|
* @author Vasenin Matvey <vaseninm@gmail.com>
|
|
* @since 2.0.6
|
|
*/
|
|
class ColumnSchemaBuilder extends BaseObject
|
|
{
|
|
// Internally used constants representing categories that abstract column types fall under.
|
|
// See [[$categoryMap]] for mappings of abstract column types to category.
|
|
// @since 2.0.8
|
|
const CATEGORY_PK = 'pk';
|
|
const CATEGORY_STRING = 'string';
|
|
const CATEGORY_NUMERIC = 'numeric';
|
|
const CATEGORY_TIME = 'time';
|
|
const CATEGORY_OTHER = 'other';
|
|
|
|
/**
|
|
* @var string the column type definition such as INTEGER, VARCHAR, DATETIME, etc.
|
|
*/
|
|
protected $type;
|
|
/**
|
|
* @var int|string|array column size or precision definition. This is what goes into the parenthesis after
|
|
* the column type. This can be either a string, an integer or an array. If it is an array, the array values will
|
|
* be joined into a string separated by comma.
|
|
*/
|
|
protected $length;
|
|
/**
|
|
* @var bool|null whether the column is or not nullable. If this is `true`, a `NOT NULL` constraint will be added.
|
|
* If this is `false`, a `NULL` constraint will be added.
|
|
*/
|
|
protected $isNotNull;
|
|
/**
|
|
* @var bool whether the column values should be unique. If this is `true`, a `UNIQUE` constraint will be added.
|
|
*/
|
|
protected $isUnique = false;
|
|
/**
|
|
* @var string the `CHECK` constraint for the column.
|
|
*/
|
|
protected $check;
|
|
/**
|
|
* @var mixed default value of the column.
|
|
*/
|
|
protected $default;
|
|
/**
|
|
* @var mixed SQL string to be appended to column schema definition.
|
|
* @since 2.0.9
|
|
*/
|
|
protected $append;
|
|
/**
|
|
* @var bool whether the column values should be unsigned. If this is `true`, an `UNSIGNED` keyword will be added.
|
|
* @since 2.0.7
|
|
*/
|
|
protected $isUnsigned = false;
|
|
/**
|
|
* @var string the column after which this column will be added.
|
|
* @since 2.0.8
|
|
*/
|
|
protected $after;
|
|
/**
|
|
* @var bool whether this column is to be inserted at the beginning of the table.
|
|
* @since 2.0.8
|
|
*/
|
|
protected $isFirst;
|
|
|
|
|
|
/**
|
|
* @var array mapping of abstract column types (keys) to type categories (values).
|
|
* @since 2.0.8
|
|
*/
|
|
public $categoryMap = [
|
|
Schema::TYPE_PK => self::CATEGORY_PK,
|
|
Schema::TYPE_UPK => self::CATEGORY_PK,
|
|
Schema::TYPE_BIGPK => self::CATEGORY_PK,
|
|
Schema::TYPE_UBIGPK => self::CATEGORY_PK,
|
|
Schema::TYPE_CHAR => self::CATEGORY_STRING,
|
|
Schema::TYPE_STRING => self::CATEGORY_STRING,
|
|
Schema::TYPE_TEXT => self::CATEGORY_STRING,
|
|
Schema::TYPE_TINYINT => self::CATEGORY_NUMERIC,
|
|
Schema::TYPE_SMALLINT => self::CATEGORY_NUMERIC,
|
|
Schema::TYPE_INTEGER => self::CATEGORY_NUMERIC,
|
|
Schema::TYPE_BIGINT => self::CATEGORY_NUMERIC,
|
|
Schema::TYPE_FLOAT => self::CATEGORY_NUMERIC,
|
|
Schema::TYPE_DOUBLE => self::CATEGORY_NUMERIC,
|
|
Schema::TYPE_DECIMAL => self::CATEGORY_NUMERIC,
|
|
Schema::TYPE_DATETIME => self::CATEGORY_TIME,
|
|
Schema::TYPE_TIMESTAMP => self::CATEGORY_TIME,
|
|
Schema::TYPE_TIME => self::CATEGORY_TIME,
|
|
Schema::TYPE_DATE => self::CATEGORY_TIME,
|
|
Schema::TYPE_BINARY => self::CATEGORY_OTHER,
|
|
Schema::TYPE_BOOLEAN => self::CATEGORY_NUMERIC,
|
|
Schema::TYPE_MONEY => self::CATEGORY_NUMERIC,
|
|
];
|
|
/**
|
|
* @var \yii\db\Connection the current database connection. It is used mainly to escape strings
|
|
* safely when building the final column schema string.
|
|
* @since 2.0.8
|
|
*/
|
|
public $db;
|
|
/**
|
|
* @var string comment value of the column.
|
|
* @since 2.0.8
|
|
*/
|
|
public $comment;
|
|
|
|
/**
|
|
* Create a column schema builder instance giving the type and value precision.
|
|
*
|
|
* @param string $type type of the column. See [[$type]].
|
|
* @param int|string|array $length length or precision of the column. See [[$length]].
|
|
* @param \yii\db\Connection $db the current database connection. See [[$db]].
|
|
* @param array $config name-value pairs that will be used to initialize the object properties
|
|
*/
|
|
public function __construct($type, $length = null, $db = null, $config = [])
|
|
{
|
|
$this->type = $type;
|
|
$this->length = $length;
|
|
$this->db = $db;
|
|
parent::__construct($config);
|
|
}
|
|
|
|
/**
|
|
* Adds a `NOT NULL` constraint to the column.
|
|
* @return $this
|
|
*/
|
|
public function notNull()
|
|
{
|
|
$this->isNotNull = true;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Adds a `NULL` constraint to the column.
|
|
* @return $this
|
|
* @since 2.0.9
|
|
*/
|
|
public function null()
|
|
{
|
|
$this->isNotNull = false;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Adds a `UNIQUE` constraint to the column.
|
|
* @return $this
|
|
*/
|
|
public function unique()
|
|
{
|
|
$this->isUnique = true;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Sets a `CHECK` constraint for the column.
|
|
* @param string $check the SQL of the `CHECK` constraint to be added.
|
|
* @return $this
|
|
*/
|
|
public function check($check)
|
|
{
|
|
$this->check = $check;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Specify the default value for the column.
|
|
* @param mixed $default the default value.
|
|
* @return $this
|
|
*/
|
|
public function defaultValue($default)
|
|
{
|
|
if ($default === null) {
|
|
$this->null();
|
|
}
|
|
|
|
$this->default = $default;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Specifies the comment for column.
|
|
* @param string $comment the comment
|
|
* @return $this
|
|
* @since 2.0.8
|
|
*/
|
|
public function comment($comment)
|
|
{
|
|
$this->comment = $comment;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Marks column as unsigned.
|
|
* @return $this
|
|
* @since 2.0.7
|
|
*/
|
|
public function unsigned()
|
|
{
|
|
switch ($this->type) {
|
|
case Schema::TYPE_PK:
|
|
$this->type = Schema::TYPE_UPK;
|
|
break;
|
|
case Schema::TYPE_BIGPK:
|
|
$this->type = Schema::TYPE_UBIGPK;
|
|
break;
|
|
}
|
|
$this->isUnsigned = true;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Adds an `AFTER` constraint to the column.
|
|
* Note: MySQL, Oracle and Cubrid support only.
|
|
* @param string $after the column after which $this column will be added.
|
|
* @return $this
|
|
* @since 2.0.8
|
|
*/
|
|
public function after($after)
|
|
{
|
|
$this->after = $after;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Adds an `FIRST` constraint to the column.
|
|
* Note: MySQL, Oracle and Cubrid support only.
|
|
* @return $this
|
|
* @since 2.0.8
|
|
*/
|
|
public function first()
|
|
{
|
|
$this->isFirst = true;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Specify the default SQL expression for the column.
|
|
* @param string $default the default value expression.
|
|
* @return $this
|
|
* @since 2.0.7
|
|
*/
|
|
public function defaultExpression($default)
|
|
{
|
|
$this->default = new Expression($default);
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Specify additional SQL to be appended to column definition.
|
|
* Position modifiers will be appended after column definition in databases that support them.
|
|
* @param string $sql the SQL string to be appended.
|
|
* @return $this
|
|
* @since 2.0.9
|
|
*/
|
|
public function append($sql)
|
|
{
|
|
$this->append = $sql;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Builds the full string for the column's schema.
|
|
* @return string
|
|
*/
|
|
public function __toString()
|
|
{
|
|
switch ($this->getTypeCategory()) {
|
|
case self::CATEGORY_PK:
|
|
$format = '{type}{check}{comment}{append}';
|
|
break;
|
|
default:
|
|
$format = '{type}{length}{notnull}{unique}{default}{check}{comment}{append}';
|
|
}
|
|
|
|
return $this->buildCompleteString($format);
|
|
}
|
|
|
|
/**
|
|
* Builds the length/precision part of the column.
|
|
* @return string
|
|
*/
|
|
protected function buildLengthString()
|
|
{
|
|
if ($this->length === null || $this->length === []) {
|
|
return '';
|
|
}
|
|
if (is_array($this->length)) {
|
|
$this->length = implode(',', $this->length);
|
|
}
|
|
|
|
return "({$this->length})";
|
|
}
|
|
|
|
/**
|
|
* Builds the not null constraint for the column.
|
|
* @return string returns 'NOT NULL' if [[isNotNull]] is true,
|
|
* 'NULL' if [[isNotNull]] is false or an empty string otherwise.
|
|
*/
|
|
protected function buildNotNullString()
|
|
{
|
|
if ($this->isNotNull === true) {
|
|
return ' NOT NULL';
|
|
} elseif ($this->isNotNull === false) {
|
|
return ' NULL';
|
|
}
|
|
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* Builds the unique constraint for the column.
|
|
* @return string returns string 'UNIQUE' if [[isUnique]] is true, otherwise it returns an empty string.
|
|
*/
|
|
protected function buildUniqueString()
|
|
{
|
|
return $this->isUnique ? ' UNIQUE' : '';
|
|
}
|
|
|
|
/**
|
|
* Builds the default value specification for the column.
|
|
* @return string string with default value of column.
|
|
*/
|
|
protected function buildDefaultString()
|
|
{
|
|
if ($this->default === null) {
|
|
return $this->isNotNull === false ? ' DEFAULT NULL' : '';
|
|
}
|
|
|
|
$string = ' DEFAULT ';
|
|
switch (gettype($this->default)) {
|
|
case 'integer':
|
|
$string .= (string) $this->default;
|
|
break;
|
|
case 'double':
|
|
// ensure type cast always has . as decimal separator in all locales
|
|
$string .= StringHelper::floatToString($this->default);
|
|
break;
|
|
case 'boolean':
|
|
$string .= $this->default ? 'TRUE' : 'FALSE';
|
|
break;
|
|
case 'object':
|
|
$string .= (string) $this->default;
|
|
break;
|
|
default:
|
|
$string .= "'{$this->default}'";
|
|
}
|
|
|
|
return $string;
|
|
}
|
|
|
|
/**
|
|
* Builds the check constraint for the column.
|
|
* @return string a string containing the CHECK constraint.
|
|
*/
|
|
protected function buildCheckString()
|
|
{
|
|
return $this->check !== null ? " CHECK ({$this->check})" : '';
|
|
}
|
|
|
|
/**
|
|
* Builds the unsigned string for column. Defaults to unsupported.
|
|
* @return string a string containing UNSIGNED keyword.
|
|
* @since 2.0.7
|
|
*/
|
|
protected function buildUnsignedString()
|
|
{
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* Builds the after constraint for the column. Defaults to unsupported.
|
|
* @return string a string containing the AFTER constraint.
|
|
* @since 2.0.8
|
|
*/
|
|
protected function buildAfterString()
|
|
{
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* Builds the first constraint for the column. Defaults to unsupported.
|
|
* @return string a string containing the FIRST constraint.
|
|
* @since 2.0.8
|
|
*/
|
|
protected function buildFirstString()
|
|
{
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* Builds the custom string that's appended to column definition.
|
|
* @return string custom string to append.
|
|
* @since 2.0.9
|
|
*/
|
|
protected function buildAppendString()
|
|
{
|
|
return $this->append !== null ? ' ' . $this->append : '';
|
|
}
|
|
|
|
/**
|
|
* Returns the category of the column type.
|
|
* @return string a string containing the column type category name.
|
|
* @since 2.0.8
|
|
*/
|
|
protected function getTypeCategory()
|
|
{
|
|
return isset($this->categoryMap[$this->type]) ? $this->categoryMap[$this->type] : null;
|
|
}
|
|
|
|
/**
|
|
* Builds the comment specification for the column.
|
|
* @return string a string containing the COMMENT keyword and the comment itself
|
|
* @since 2.0.8
|
|
*/
|
|
protected function buildCommentString()
|
|
{
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* Returns the complete column definition from input format.
|
|
* @param string $format the format of the definition.
|
|
* @return string a string containing the complete column definition.
|
|
* @since 2.0.8
|
|
*/
|
|
protected function buildCompleteString($format)
|
|
{
|
|
$placeholderValues = [
|
|
'{type}' => $this->type,
|
|
'{length}' => $this->buildLengthString(),
|
|
'{unsigned}' => $this->buildUnsignedString(),
|
|
'{notnull}' => $this->buildNotNullString(),
|
|
'{unique}' => $this->buildUniqueString(),
|
|
'{default}' => $this->buildDefaultString(),
|
|
'{check}' => $this->buildCheckString(),
|
|
'{comment}' => $this->buildCommentString(),
|
|
'{pos}' => $this->isFirst ? $this->buildFirstString() : $this->buildAfterString(),
|
|
'{append}' => $this->buildAppendString(),
|
|
];
|
|
return strtr($format, $placeholderValues);
|
|
}
|
|
}
|