CDbTableSchema
| 包 | system.db.schema |
|---|---|
| 继承 | class CDbTableSchema » CComponent |
| 子类 | CCubridTableSchema, CMssqlTableSchema, CMysqlTableSchema, COciTableSchema, CPgsqlTableSchema |
| 可用自 | 1.0 |
| 源码 | framework/db/schema/CDbTableSchema.php |
CDbTableSchema 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:
It may be extended by different DBMS driver to provide DBMS-specific table metadata.
CDbTableSchema provides the following information about a table:
公共属性
| 属性 | 类型 | 描述 | 被定义在 |
|---|---|---|---|
| columnNames | array | list of column names | CDbTableSchema |
| columns | array | column metadata of this table. | CDbTableSchema |
| foreignKeys | array | foreign keys of this table. | CDbTableSchema |
| name | string | name of this table. | CDbTableSchema |
| primaryKey | string|array | primary key name of this table. | CDbTableSchema |
| rawName | string | raw name of this table. | CDbTableSchema |
| sequenceName | string | sequence name for the primary key. | CDbTableSchema |
公共方法
| 方法 | 描述 | 被定义在 |
|---|---|---|
| __call() | Calls the named method which is not a class method. | CComponent |
| __get() | Returns a property value, an event handler list or a behavior based on its name. | CComponent |
| __isset() | Checks if a property value is null. | CComponent |
| __set() | Sets value of a component property. | CComponent |
| __unset() | Sets a component property to be null. | CComponent |
| asa() | Returns the named behavior object. | CComponent |
| attachBehavior() | Attaches a behavior to this component. | CComponent |
| attachBehaviors() | Attaches a list of behaviors to the component. | CComponent |
| attachEventHandler() | Attaches an event handler to an event. | CComponent |
| canGetProperty() | Determines whether a property can be read. | CComponent |
| canSetProperty() | Determines whether a property can be set. | CComponent |
| detachBehavior() | Detaches a behavior from the component. | CComponent |
| detachBehaviors() | Detaches all behaviors from the component. | CComponent |
| detachEventHandler() | Detaches an existing event handler. | CComponent |
| disableBehavior() | Disables an attached behavior. | CComponent |
| disableBehaviors() | Disables all behaviors attached to this component. | CComponent |
| enableBehavior() | Enables an attached behavior. | CComponent |
| enableBehaviors() | Enables all behaviors attached to this component. | CComponent |
| evaluateExpression() | Evaluates a PHP expression or callback under the context of this component. | CComponent |
| getColumn() | Gets the named column metadata. | CDbTableSchema |
| getColumnNames() | Returns list of column names | CDbTableSchema |
| getEventHandlers() | Returns the list of attached event handlers for an event. | CComponent |
| hasEvent() | Determines whether an event is defined. | CComponent |
| hasEventHandler() | Checks whether the named event has attached handlers. | CComponent |
| hasProperty() | Determines whether a property is defined. | CComponent |
| raiseEvent() | Raises an event. | CComponent |
属性详情
columnNames
属性
只读
public array getColumnNames()
list of column names
columns
属性
public array $columns;
column metadata of this table. Each array element is a CDbColumnSchema object, indexed by column names.
foreignKeys
属性
public array $foreignKeys;
foreign keys of this table. The array is indexed by column name. Each value is an array of foreign table name and foreign column name.
name
属性
public string $name;
name of this table.
primaryKey
属性
public string|array $primaryKey;
primary key name of this table. If composite key, an array of key names is returned.
rawName
属性
public string $rawName;
raw name of this table. This is the quoted version of table name with optional schema name. It can be directly used in SQLs.
sequenceName
属性
public string $sequenceName;
sequence name for the primary key. Null if no sequence.
方法详情
getColumn()
方法
|
public CDbColumnSchema getColumn(string $name)
| ||
| $name | string | column name |
| {return} | CDbColumnSchema | metadata of the named column. Null if the named column does not exist. |
源码： framework/db/schema/CDbTableSchema.php#65 (显示)
public function getColumn($name)
{
return isset($this->columns[$name]) ? $this->columns[$name] : null;
}
Gets the named column metadata. This is a convenient method for retrieving a named column even if it does not exist.
getColumnNames()
方法
|
public array getColumnNames()
| ||
| {return} | array | list of column names |
源码： framework/db/schema/CDbTableSchema.php#73 (显示)
public function getColumnNames()
{
return array_keys($this->columns);
}