Class yii\db\sqlite\SqlTokenizer
| Inheritance | yii\db\sqlite\SqlTokenizer » yii\db\SqlTokenizer » yii\base\Component » yii\base\BaseObject |
|---|---|
| Implements | yii\base\Configurable |
| Available since version | 2.0.13 |
SqlTokenizer splits SQLite query into individual SQL tokens.
It's used to obtain a CHECK constraint information from a CREATE TABLE SQL code.
请参阅:
Public Properties
隐藏继承的属性 Hide inherited properties
| 属性Property | 类型 Type | 简介 Description | 定义在 Defined By |
|---|---|---|---|
| $behaviors | yii\base\Behavior[] | List of behaviors attached to this component | yii\base\Component |
| $sql | string | SQL code. | yii\db\SqlTokenizer |
Protected Properties
隐藏继承的属性 Hide inherited properties
| 属性Property | 类型 Type | 简介 Description | 定义在 Defined By |
|---|---|---|---|
| $length | integer | SQL code string length. | yii\db\SqlTokenizer |
| $offset | integer | SQL code string current offset. | yii\db\SqlTokenizer |
Public Methods
隐藏继承的方法 Hide inherited methods
| 方法 Method | 简介 Description | 定义在 Defined By |
|---|---|---|
| __call() | Calls the named method which is not a class method. | yii\base\BaseObject |
| __clone() | This method is called after the object is created by cloning an existing one. | yii\base\Component |
| __construct() | Constructor. | yii\db\SqlTokenizer |
| __get() | Returns the value of an object property. | yii\base\BaseObject |
| __isset() | Checks if a property is set, i.e. defined and not null. | yii\base\BaseObject |
| __set() | Sets value of an object property. | yii\base\BaseObject |
| __unset() | Sets an object property to null. | yii\base\BaseObject |
| attachBehavior() | Attaches a behavior to this component. | yii\base\Component |
| attachBehaviors() | Attaches a list of behaviors to the component. | yii\base\Component |
| behaviors() | Returns a list of behaviors that this component should behave as. | yii\base\Component |
| canGetProperty() | Returns a value indicating whether a property can be read. | yii\base\BaseObject |
| canSetProperty() | Returns a value indicating whether a property can be set. | yii\base\BaseObject |
| className() | Returns the fully qualified name of this class. | yii\base\BaseObject |
| detachBehavior() | Detaches a behavior from the component. | yii\base\Component |
| detachBehaviors() | Detaches all behaviors from the component. | yii\base\Component |
| ensureBehaviors() | Makes sure that the behaviors declared in behaviors() are attached to this component. | yii\base\Component |
| getBehavior() | Returns the named behavior object. | yii\base\Component |
| getBehaviors() | Returns all behaviors attached to this component. | yii\base\Component |
| hasEventHandlers() | Returns a value indicating whether there is any handler attached to the named event. | yii\base\Component |
| hasMethod() | Returns a value indicating whether a method is defined. | yii\base\BaseObject |
| hasProperty() | Returns a value indicating whether a property is defined. | yii\base\BaseObject |
| init() | Initializes the object. | yii\base\BaseObject |
| off() | Detaches an existing event handler from this component. | yii\base\Component |
| on() | Attaches an event handler to an event. | yii\base\Component |
| tokenize() | Tokenizes and returns a code type token. | yii\db\SqlTokenizer |
| trigger() | Triggers an event. | yii\base\Component |
Protected Methods
隐藏继承的方法 Hide inherited methods
| 方法 Method | 简介 Description | 定义在 Defined By |
|---|---|---|
| indexAfter() | Returns an index after the given string in the SQL code starting with the specified offset. | yii\db\SqlTokenizer |
| isComment() | Returns whether there's a commentary at the current offset. | yii\db\sqlite\SqlTokenizer |
| isIdentifier() | Returns whether there's an identifier at the current offset. | yii\db\sqlite\SqlTokenizer |
| isKeyword() | Returns whether the given string is a keyword. | yii\db\sqlite\SqlTokenizer |
| isOperator() | Returns whether there's an operator at the current offset. | yii\db\sqlite\SqlTokenizer |
| isStringLiteral() | Returns whether there's a string literal at the current offset. | yii\db\sqlite\SqlTokenizer |
| isWhitespace() | Returns whether there's a whitespace at the current offset. | yii\db\sqlite\SqlTokenizer |
| startsWithAnyLongest() | Returns whether the longest common prefix equals to the SQL code of the same length at the current offset. | yii\db\SqlTokenizer |
| substring() | Returns a string of the given length starting with the specified offset. | yii\db\SqlTokenizer |
方法详情 Method Details
Returns whether there's a commentary at the current offset.
If this methos returns true, it has to set the $length parameter to the length of the matched string.
| protected boolean isComment ( &$length ) | ||
| $length | integer | Length of the matched string. |
| return | boolean | Whether there's a commentary at the current offset. |
|---|---|---|
Returns whether there's an identifier at the current offset.
If this methos returns true, it has to set the $length parameter to the length of the matched string.
It may also set $content to a string that will be used as a token content.
| protected boolean isIdentifier ( &$length, &$content ) | ||
| $length | integer | Length of the matched string. |
| $content | string | Optional content instead of the matched string. |
| return | boolean | Whether there's an identifier at the current offset. |
|---|---|---|
Returns whether the given string is a keyword.
The method may set $content to a string that will be used as a token content.
| protected boolean isKeyword ( $string, &$content ) | ||
| $string | string | String to be matched. |
| $content | string | Optional content instead of the matched string. |
| return | boolean | Whether the given string is a keyword. |
|---|---|---|
Returns whether there's an operator at the current offset.
If this methos returns true, it has to set the $length parameter to the length of the matched string.
It may also set $content to a string that will be used as a token content.
| protected boolean isOperator ( &$length, &$content ) | ||
| $length | integer | Length of the matched string. |
| $content | string | Optional content instead of the matched string. |
| return | boolean | Whether there's an operator at the current offset. |
|---|---|---|
Returns whether there's a string literal at the current offset.
If this methos returns true, it has to set the $length parameter to the length of the matched string.
It may also set $content to a string that will be used as a token content.
| protected boolean isStringLiteral ( &$length, &$content ) | ||
| $length | integer | Length of the matched string. |
| $content | string | Optional content instead of the matched string. |
| return | boolean | Whether there's a string literal at the current offset. |
|---|---|---|
Returns whether there's a whitespace at the current offset.
If this methos returns true, it has to set the $length parameter to the length of the matched string.
| protected boolean isWhitespace ( &$length ) | ||
| $length | integer | Length of the matched string. |
| return | boolean | Whether there's a whitespace at the current offset. |
|---|---|---|