Class Mysql

Namespace: Cake\Database\Driver

Property Summary

$_autoQuoting protected

bool

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

array

Base configuration settings for MySQL driver
$_config protected

array

Configuration data.
$_connection protected

PDO|null

Instance of PDO.
$_endQuote protected

string

String used to end a database identifier quoting to make it safe
$_schemaDialect protected

Cake\Database\Schema\MysqlSchema

The schema dialect class for this driver
$_startQuote protected

string

String used to start a database identifier quoting to make it safe
$_supportsNativeJson protected

bool

Whether or not the server supports native JSON
$_version protected

string

The server version

Method Summary

__construct() public

Constructor
__debugInfo() public

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

Destructor
_connect() protected

Establishes a connection to the database server
_deleteQueryTranslator() protected

Apply translation steps to delete queries.
_expressionTranslators() protected

Returns an associative array of methods that will transform Expression objects to conform with the specific SQL dialect. Keys are class names and values a method in this class.
_insertQueryTranslator() protected

Apply translation steps to insert queries.
_removeAliasesFromConditions() protected

Removes aliases from the WHERE clause of a query.
_selectQueryTranslator() protected

Apply translation steps to select queries.
_transformDistinct() protected

Returns the passed query after rewriting the DISTINCT clause, so that drivers that do not support the "ON" part can provide the actual way it should be done
_updateQueryTranslator() protected

Apply translation steps to update queries.
autoQuoting() public deprecated

Returns whether or not this driver should automatically quote identifiers in queries
beginTransaction() public

Starts a transaction
commitTransaction() public

Commits a transaction
compileQuery() public

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

Establishes a connection to the database server
connection() public

Returns correct connection resource or object that is internally used If first argument is passed, it will set internal connection object or result to the value passed
disableForeignKeySQL() public

Get the SQL for disabling foreign keys
disconnect() public

Disconnects from database server
enableAutoQuoting() public

Sets whether or not this driver should automatically quote identifiers in queries.
enableForeignKeySQL() public

Get the SQL for enabling foreign keys
enabled() public

Returns whether php is able to use this driver for connecting to database
isAutoQuotingEnabled() public

Returns whether or not this driver should automatically quote identifiers in queries
isConnected() public

Checks whether or not the driver is connected.
lastInsertId() public

Returns last id generated for a table or sequence in database
newCompiler() public

Returns an instance of a QueryCompiler
prepare() public

Prepares a sql statement to be executed
queryTranslator() public

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.
quote() public

Returns a value in a safe representation to be used in a query string
quoteIdentifier() public

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

Returns a SQL snippet for releasing a previously created save point
rollbackSavePointSQL() public

Returns a SQL snippet for rollbacking a previously created save point
rollbackTransaction() public

Rollback a transaction
savePointSQL() public

Returns a SQL snippet for creating a new transaction savepoint
schema() public

Returns the schema name that's being used
schemaDialect() public

Get the schema dialect.
schemaValue() public

Escapes values for use in schema definitions.
supportsDynamicConstraints() public

Returns whether the driver supports adding or dropping constraints to already created tables.
supportsNativeJson() public

Returns true if the server supports native JSON columns
supportsQuoting() public

Checks if the driver supports quoting, as PDO_ODBC does not support it.
supportsSavePoints() public

Returns whether this driver supports save points for nested transactions

Method Detail

__construct() ¶ public

__construct(array $config = [])

Constructor

Parameters

array $config optional: The configuration for the driver.

Throws

InvalidArgumentException

__debugInfo() ¶ public

__debugInfo(): array

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

Returns

array

__destruct() ¶ public

__destruct()

Destructor

_connect() ¶ protected

_connect(string $dsn, array $config): bool

Establishes a connection to the database server

Parameters

string $dsn: A Driver-specific PDO-DSN
array $config: configuration to be used for creating connection

Returns

bool

_deleteQueryTranslator() ¶ protected

_deleteQueryTranslator(Cake\Database\Query $query): Cake\Database\Query

Apply translation steps to delete queries.

Chops out aliases on delete query conditions as most database dialects do not support aliases in delete queries. This also removes aliases in table names as they frequently don't work either.

We are intentionally not supporting deletes with joins as they have even poorer support.

Parameters

Cake\Database\Query $query: The query to translate

Returns

Cake\Database\Query

_expressionTranslators() ¶ protected

_expressionTranslators(): array

Returns an associative array of methods that will transform Expression objects to conform with the specific SQL dialect. Keys are class names and values a method in this class.

Returns

array

_insertQueryTranslator() ¶ protected

_insertQueryTranslator(Cake\Database\Query $query): Cake\Database\Query

Apply translation steps to insert queries.

Parameters

Cake\Database\Query $query: The query to translate

Returns

Cake\Database\Query

_removeAliasesFromConditions() ¶ protected

_removeAliasesFromConditions(Cake\Database\Query $query): Cake\Database\Query

Removes aliases from the WHERE clause of a query.

Parameters

Cake\Database\Query $query: The query to process.

Returns

Cake\Database\Query

Throws

RuntimeException
In case the processed query contains any joins, as removing aliases from the conditions can break references to the joined tables.

_selectQueryTranslator() ¶ protected

_selectQueryTranslator(Cake\Database\Query $query): Cake\Database\Query

Apply translation steps to select queries.

Parameters

Cake\Database\Query $query: The query to translate

Returns

Cake\Database\Query

_transformDistinct() ¶ protected

_transformDistinct(Cake\Database\Query $query): Cake\Database\Query

Returns the passed query after rewriting the DISTINCT clause, so that drivers that do not support the "ON" part can provide the actual way it should be done

Parameters

Cake\Database\Query $query: The query to be transformed

Returns

Cake\Database\Query

_updateQueryTranslator() ¶ protected

_updateQueryTranslator(Cake\Database\Query $query): Cake\Database\Query

Apply translation steps to update queries.

Chops out aliases on update query conditions as not all database dialects do support aliases in update queries.

Just like for delete queries, joins are currently not supported for update queries.

Parameters

Cake\Database\Query $query: The query to translate

Returns

Cake\Database\Query

autoQuoting() ¶ public

autoQuoting(bool|null $enable = null): bool

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

bool|null $enable optional: Whether to enable auto quoting

Returns

bool

beginTransaction() ¶ public

beginTransaction(): bool

Starts a transaction

Returns

bool

commitTransaction() ¶ public

commitTransaction(): bool

Commits a transaction

Returns

bool

compileQuery() ¶ public

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

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

connect() ¶ public

connect(): bool

Establishes a connection to the database server

Returns

bool

connection() ¶ public

connection(nullPDO $connection = null): PDO

Returns correct connection resource or object that is internally used If first argument is passed, it will set internal connection object or result to the value passed

Parameters

nullPDO $connection optional: The PDO connection instance.

Returns

PDO

disableForeignKeySQL() ¶ public

disableForeignKeySQL(): string

Get the SQL for disabling foreign keys

Returns

string

disconnect() ¶ public

disconnect(): void

Disconnects from database server

Returns

void

enableAutoQuoting() ¶ public

enableAutoQuoting(bool $enable = true): $this

Sets whether or not this driver should automatically quote identifiers in queries.

Parameters

bool $enable optional: Whether to enable auto quoting

Returns

$this

enableForeignKeySQL() ¶ public

enableForeignKeySQL(): string

Get the SQL for enabling foreign keys

Returns

string

enabled() ¶ public

enabled(): bool

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

Returns

bool

isAutoQuotingEnabled() ¶ public

isAutoQuotingEnabled(): bool

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

Returns

bool

isConnected() ¶ public

isConnected(): bool

Checks whether or not the driver is connected.

Returns

bool

lastInsertId() ¶ public

lastInsertId(string|null $table = null, string|null $column = null): string|int

Returns last id generated for a table or sequence in database

Parameters

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

Returns

string|int

newCompiler() ¶ public

newCompiler(): Cake\Database\QueryCompiler

Returns an instance of a QueryCompiler

Returns

Cake\Database\QueryCompiler

prepare() ¶ public

prepare(stringCake\Database\Query $query): Cake\Database\StatementInterface

Prepares a sql statement to be executed

Parameters

stringCake\Database\Query $query: The query to prepare.

Returns

Cake\Database\StatementInterface

queryTranslator() ¶ public

queryTranslator(string $type): callable

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

quote() ¶ public

quote(mixed $value, string $type): string

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

quoteIdentifier() ¶ public

quoteIdentifier(string $identifier): string

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 to quote.

Returns

string

releaseSavePointSQL() ¶ public

releaseSavePointSQL(string $name): string

Returns a SQL snippet for releasing a previously created save point

Parameters

string $name: save point name

Returns

string

rollbackSavePointSQL() ¶ public

rollbackSavePointSQL(string $name): string

Returns a SQL snippet for rollbacking a previously created save point

Parameters

string $name: save point name

Returns

string

rollbackTransaction() ¶ public

rollbackTransaction(): bool

Rollback a transaction

Returns

bool

savePointSQL() ¶ public

savePointSQL(string $name): string

Returns a SQL snippet for creating a new transaction savepoint

Parameters

string $name: save point name

Returns

string

schema() ¶ public

schema(): string

Returns the schema name that's being used

Returns

string

schemaDialect() ¶ public

schemaDialect(): Cake\Database\Schema\MysqlSchema

Get the schema dialect.

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

Returns

Cake\Database\Schema\MysqlSchema

schemaValue() ¶ public

schemaValue(mixed $value): string

Escapes values for use in schema definitions.

Parameters

mixed $value: The value to escape.

Returns

string

supportsDynamicConstraints() ¶ public

supportsDynamicConstraints(): bool

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

Returns

bool

supportsNativeJson() ¶ public

supportsNativeJson(): bool

Returns true if the server supports native JSON columns

Returns

bool

supportsQuoting() ¶ public

supportsQuoting(): bool

Checks if the driver supports quoting, as PDO_ODBC does not support it.

Returns

bool

supportsSavePoints() ¶ public

supportsSavePoints(): bool

Returns whether this driver supports save points for nested transactions

Returns

bool

Property Detail

`$_autoQuoting` ¶ protected

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

Type

bool

`$_baseConfig` ¶ protected

Base configuration settings for MySQL driver

Type

array

`$_config` ¶ protected

Configuration data.

Type

array

`$_connection` ¶ protected

Instance of PDO.

Type

PDO|null

`$_endQuote` ¶ protected

String used to end a database identifier quoting to make it safe

Type

string

`$_schemaDialect` ¶ protected

The schema dialect class for this driver

Type

Cake\Database\Schema\MysqlSchema

`$_startQuote` ¶ protected

String used to start a database identifier quoting to make it safe

Type

string

`$_supportsNativeJson` ¶ protected

Whether or not the server supports native JSON

Type

bool

`$_version` ¶ protected

The server version

Type

string

Namespaces

Class Mysql

Property Summary

Method Summary

__construct() public

__debugInfo() public

__destruct() public

_connect() protected

_deleteQueryTranslator() protected

_expressionTranslators() protected

_insertQueryTranslator() protected

_removeAliasesFromConditions() protected

_selectQueryTranslator() protected

_transformDistinct() protected

_updateQueryTranslator() protected

autoQuoting() public deprecated

beginTransaction() public

commitTransaction() public

compileQuery() public

connect() public

connection() public

disableForeignKeySQL() public

disconnect() public

enableAutoQuoting() public

enableForeignKeySQL() public

enabled() public

isAutoQuotingEnabled() public

isConnected() public

lastInsertId() public

newCompiler() public

prepare() public

queryTranslator() public

quote() public

quoteIdentifier() public

releaseSavePointSQL() public

rollbackSavePointSQL() public

rollbackTransaction() public

savePointSQL() public

schema() public

schemaDialect() public

schemaValue() public

supportsDynamicConstraints() public

supportsNativeJson() public

supportsQuoting() public

supportsSavePoints() public

Method Detail

__construct() ¶ public

Parameters

Throws

__debugInfo() ¶ public

Returns

__destruct() ¶ public

_connect() ¶ protected

Parameters

Returns

_deleteQueryTranslator() ¶ protected

Parameters

Returns

_expressionTranslators() ¶ protected

Returns

_insertQueryTranslator() ¶ protected

Parameters

Returns

_removeAliasesFromConditions() ¶ protected

Parameters

Returns

Throws

_selectQueryTranslator() ¶ protected

Parameters

Returns

_transformDistinct() ¶ protected

Parameters

Returns

_updateQueryTranslator() ¶ protected

Parameters

Returns

autoQuoting() ¶ public

Parameters

Returns

beginTransaction() ¶ public