Class Driver

Represents a database diver containing all specificities for a database engine including its SQL dialect

Direct known subclasses

Cake\Database\Driver\Mysql, Cake\Database\Driver\Postgres, Cake\Database\Driver\Sqlite, Cake\Database\Driver\Sqlserver
Abstract
Namespace: Cake\Database
Located at Database/Driver.php

Method Detail

__constructsource public

__construct( array $config [] )

Constructor

Parameters

array $config optional []
The configuration for the driver.

Throws

InvalidArgumentException
InvalidArgumentException

__debugInfosource public

__debugInfo( )

Returns an array that can be used to describe the internal state of this object.

Returns

array
array

__destructsource public

__destruct( )

Destructor

autoQuotingsource public

autoQuoting( boolean $enable null )

Returns whether or not this driver should automatically quote identifiers in queries

If called with a boolean argument, it will toggle the auto quoting setting to the passed value

Parameters

boolean $enable optional null
whether to enable auto quoting

Returns

boolean
bool

beginTransactionsource abstract public

beginTransaction( )

Starts a transaction

Returns

boolean
true on success, false otherwise

commitTransactionsource abstract public

commitTransaction( )

Commits a transaction

Returns

boolean
true on success, false otherwise

compileQuerysource public

compileQuery( Cake\Database\Query $query , Cake\Database\ValueBinder $generator )

Transforms the passed query to this Driver's dialect and returns an instance of the transformed query and the full compiled SQL string

Parameters

Cake\Database\Query $query
The query to compile.
Cake\Database\ValueBinder $generator
The value binder to use.

Returns

array
containing 2 entries. The first entity is the transformed query and the second one the compiled SQL

connectsource abstract public

connect( )

Establishes a connection to the database server

Returns

boolean
true con success

connectionsource abstract public

connection( null|PDO $connection null )

Returns correct connection resource or object that is internally used If first argument is passed,

Parameters

null|PDO $connection optional null
The connection object

disableForeignKeySQLsource abstract public

disableForeignKeySQL( )

Get the SQL for disabling foreign keys

Returns

string
string

disconnectsource abstract public

disconnect( )

Disconnects from database server

enableForeignKeySQLsource abstract public

enableForeignKeySQL( )

Get the SQL for enabling foreign keys

Returns

string
string

enabledsource abstract public

enabled( )

Returns whether php is able to use this driver for connecting to database

Returns

boolean
true if it is valid to use this driver

isConnectedsource public

isConnected( )

Check whether or not the driver is connected.

Returns

boolean
bool

lastInsertIdsource public

lastInsertId( string $table null , string $column null )

Returns last id generated for a table or sequence in database

Parameters

string $table optional null
table name or sequence to get last insert value from
string $column optional null
the name of the column representing the primary key

Returns

string|integer
string|int

newCompilersource public

newCompiler( )

Returns an instance of a QueryCompiler

Returns

Cake\Database\QueryCompiler
\Cake\Database\QueryCompiler

preparesource abstract public

prepare( string|Cake\Database\Query $query )

Prepares a sql statement to be executed

Parameters

string|Cake\Database\Query $query
The query to convert into a statement.

Returns

Cake\Database\StatementInterface
\Cake\Database\StatementInterface

queryTranslatorsource abstract public

queryTranslator( string $type )

Returns a callable function that will be used to transform a passed Query object. This function, in turn, will return an instance of a Query object that has been transformed to accommodate any specificities of the SQL dialect in use.

Parameters

string $type
the type of query to be transformed (select, insert, update, delete)

Returns

callable
callable

quotesource abstract public

quote( mixed $value , string $type )

Returns a value in a safe representation to be used in a query string

Parameters

mixed $value
The value to quote.
string $type
Type to be used for determining kind of quoting to perform

Returns

string
string

quoteIdentifiersource abstract public

quoteIdentifier( string $identifier )

Quotes a database identifier (a column name, table name, etc..) to be used safely in queries without the risk of using reserved words

Parameters

string $identifier
The identifier expression to quote.

Returns

string
string

releaseSavePointSQLsource abstract public

releaseSavePointSQL( string $name )

Get the SQL for releasing a save point.

Parameters

string $name
The table name

Returns

string
string

rollbackSavePointSQLsource abstract public

rollbackSavePointSQL( string $name )

Get the SQL for rollingback a save point.

Parameters

string $name
The table name

Returns

string
string

rollbackTransactionsource abstract public

rollbackTransaction( )

Rollsback a transaction

Returns

boolean
true on success, false otherwise

savePointSQLsource abstract public

savePointSQL( string $name )

Get the SQL for creating a save point.

Parameters

string $name
The table name

Returns

string
string

schemaDialectsource abstract public

schemaDialect( )

Get the schema dialect.

Used by Cake\Database\Schema package to reflect schema and generate schema.

If all the tables that use this Driver specify their own schemas, then this may return null.

Returns

Cake\Database\Schema\BaseSchema
\Cake\Database\Schema\BaseSchema

schemaValuesource public

schemaValue( mixed $value )

Escapes values for use in schema definitions.

Parameters

mixed $value
The value to escape.

Returns

string
String for use in schema definitions.

supportsDynamicConstraintssource abstract public

supportsDynamicConstraints( )

Returns whether the driver supports adding or dropping constraints to already created tables.

Returns

boolean
true if driver supports dynamic constraints

supportsQuotingsource public

supportsQuoting( )

Checks if the driver supports quoting

Returns

boolean
bool

supportsSavePointssource public

supportsSavePoints( )

Returns whether this driver supports save points for nested transactions

Returns

boolean
true if save points are supported, false otherwise

Properties summary

$_autoQuotingsource

protected boolean

Indicates whether or not the driver is doing automatic identifier quoting for all queries

false

$_baseConfigsource

protected array

Base configuration that is merged into the user supplied configuration data.

[]

$_configsource

protected array

Configuration data.

© 2005–2016 The Cake Software Foundation, Inc.
Licensed under the MIT License.
CakePHP is a registered trademark of Cake Software Foundation, Inc.
We are not endorsed by or affiliated with CakePHP.
http://api.cakephp.org/3.1/class-Cake.Database.Driver.html