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Showing content from https://www.yiiframework.com/doc/api/2.0/yii-db-sqlite-columnschemabuilder below:

ColumnSchemaBuilder, yii\db\sqlite\ColumnSchemaBuilder | API Documentation for Yii 2.0

ColumnSchemaBuilder is the schema builder for Sqlite databases.

Defined in: yii\base\BaseObject::__call()

Calls the named method which is not a class method.

Do not call this method directly as it is a PHP magic method that will be implicitly called when an unknown method is being invoked.

Source code

                public function __call($name, $params)
{
    throw new UnknownMethodException('Calling unknown method: ' . get_class($this) . "::$name()");
}

Source code

                public function __construct($type, $length = null, $db = null, $config = [])
{
    $this->type = $type;
    $this->length = $length;
    $this->db = $db;
    parent::__construct($config);
}

Defined in: yii\base\BaseObject::__get()

Returns the value of an object property.

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing $value = $object->property;.

See also __get().

Source code

                public function __set($name, $value)
{
    $setter = 'set' . $name;
    if (method_exists($this, $setter)) {
        $this->$setter($value);
    } elseif (method_exists($this, 'get' . $name)) {
        throw new InvalidCallException('Setting read-only property: ' . get_class($this) . '::' . $name);
    } else {
        throw new UnknownPropertyException('Setting unknown property: ' . get_class($this) . '::' . $name);
    }
}

Builds the full string for the column's schema.

Source code

                public function __toString()
{
    switch ($this->getTypeCategory()) {
        case self::CATEGORY_PK:
            $format = '{type}{check}{append}';
            break;
        case self::CATEGORY_NUMERIC:
            $format = '{type}{length}{unsigned}{notnull}{unique}{check}{default}{append}';
            break;
        default:
            $format = '{type}{length}{notnull}{unique}{check}{default}{append}';
    }
    return $this->buildCompleteString($format);
}

Defined in: yii\base\BaseObject::__unset()

Sets an object property to null.

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing unset($object->property).

Note that if the property is not defined, this method will do nothing. If the property is read-only, it will throw an exception.

Source code

                public function __unset($name)
{
    $setter = 'set' . $name;
    if (method_exists($this, $setter)) {
        $this->$setter(null);
    } elseif (method_exists($this, 'get' . $name)) {
        throw new InvalidCallException('Unsetting read-only property: ' . get_class($this) . '::' . $name);
    }
}

public $this after ( $after ) $after string

The column after which $this column will be added.

Source code

                public function after($after)
{
    $this->after = $after;
    return $this;
}

Defined in: yii\db\ColumnSchemaBuilder::append()

Specify additional SQL to be appended to column definition.

Position modifiers will be appended after column definition in databases that support them.

Source code

                public function append($sql)
{
    $this->append = $sql;
    return $this;
}

Source code

                protected function buildAfterString()
{
    return '';
}

Source code

                protected function buildAppendString()
{
    return $this->append !== null ? ' ' . $this->append : '';
}

Source code

                protected function buildCheckString()
{
    return $this->check !== null ? " CHECK ({$this->check})" : '';
}

Source code

                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);
}

Source code

                protected function buildDefaultString()
{
    $defaultValue = $this->buildDefaultValue();
    if ($defaultValue === null) {
        return '';
    }
    return ' DEFAULT ' . $defaultValue;
}

Source code

                protected function buildDefaultValue()
{
    if ($this->default === null) {
        return $this->isNotNull === false ? 'NULL' : null;
    }
    switch (gettype($this->default)) {
        case 'double':
            
            $defaultValue = StringHelper::floatToString($this->default);
            break;
        case 'boolean':
            $defaultValue = $this->default ? 'TRUE' : 'FALSE';
            break;
        case 'integer':
        case 'object':
            $defaultValue = (string) $this->default;
            break;
        default:
            $defaultValue = "'{$this->default}'";
    }
    return $defaultValue;
}

Source code

                protected function buildFirstString()
{
    return '';
}

Source code

                protected function buildLengthString()
{
    if ($this->length === null || $this->length === []) {
        return '';
    }
    if (is_array($this->length)) {
        $this->length = implode(',', $this->length);
    }
    return "({$this->length})";
}

Source code

                protected function buildNotNullString()
{
    if ($this->isNotNull === true) {
        return ' NOT NULL';
    } elseif ($this->isNotNull === false) {
        return ' NULL';
    }
    return '';
}

Source code

                protected function buildUniqueString()
{
    return $this->isUnique ? ' UNIQUE' : '';
}

Builds the unsigned string for column. Defaults to unsupported.

Source code

                protected function buildUnsignedString()
{
    return $this->isUnsigned ? ' UNSIGNED' : '';
}

Defined in: yii\base\BaseObject::canGetProperty()

Returns a value indicating whether a property can be read.

A property is readable if:

the class has a getter method associated with the specified name (in this case, property name is case-insensitive);
the class has a member variable with the specified name (when $checkVars is true);