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Schema.php
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/var/www/vhosts/nabawater/vendor/yiisoft/yii2/db/ColumnSchemaBuilder.php
(13287B)
<?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); } }
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