Schema

Type

Class

Namespace

craft\db\mysql

Inherits

craft\db\mysql\Schema » yii\db\mysql\Schema (opens new window) » yii\db\Schema (opens new window) » yii\base\BaseObject (opens new window)

Implements

yii\base\Configurable (opens new window), yii\db\ConstraintFinderInterface (opens new window)

Uses traits

yii\db\ConstraintFinderTrait (opens new window)

Since

3.0.0

View source (opens new window)

Public Properties

Property	Description
columnSchemaClass	string (opens new window), array (opens new window) – Column schema class or class config
db	craft\db\Connection
defaultBackupCommand	string (opens new window) – The command to execute
defaultRestoreCommand	string (opens new window) – The command to execute
defaultSchema (opens new window)	string (opens new window) – The default schema name used for the current session.
exceptionMap (opens new window)	array (opens new window) – Map of DB errors and corresponding exceptions If left part is found in DB error message exception class from the right part is used.
lastInsertID (opens new window)	string (opens new window) – The row ID of the last row inserted, or the last value retrieved from the sequence object.
maxObjectNameLength	integer (opens new window) – The maximum length that objects' names can be.
queryBuilder (opens new window)	yii\db\QueryBuilder (opens new window) – The query builder for this connection.
schemaChecks (opens new window)	\yii\db\CheckConstraint[][] – Check constraints for all tables in the database.
schemaDefaultValues (opens new window)	yii\db\DefaultValueConstraint (opens new window) – Default value constraints for all tables in the database.
schemaForeignKeys (opens new window)	\yii\db\ForeignKeyConstraint[][] – Foreign keys for all tables in the database.
schemaIndexes (opens new window)	\yii\db\IndexConstraint[][] – Indexes for all tables in the database.
schemaNames (opens new window)	string (opens new window)[] – All schema names in the database, except system schemas.
schemaPrimaryKeys (opens new window)	yii\db\Constraint (opens new window) – Primary keys for all tables in the database.
schemaUniques (opens new window)	\yii\db\IndexConstraint[][] – Unique constraints for all tables in the database.
serverVersion (opens new window)	string (opens new window) – Server version as a string.
tableNames (opens new window)	string (opens new window)[] – All table names in the database.
tableSchemas (opens new window)	yii\db\TableSchema (opens new window) – The metadata for all tables in the database.
tempMyCnfPath	string (opens new window), null (opens new window) – The path to the temporary my.
transactionIsolationLevel (opens new window)	string (opens new window) – The transaction isolation level to use for this transaction.
typeMap (opens new window)	array (opens new window) – Mapping from physical column types (keys) to abstract column types (values)

columnSchemaClass

Type

string (opens new window), array (opens new window)

Default value

\craft\db\mysql\ColumnSchema::class

Column schema class or class config

View source (opens new window)

db

Type

craft\db\Connection

Default value

null

View source (opens new window)

defaultBackupCommand

Type

string (opens new window)

Default value

null

Access

Read-only

The command to execute

View source (opens new window)

defaultRestoreCommand

Type

string (opens new window)

Default value

null

Access

Read-only

The command to execute

View source (opens new window)

maxObjectNameLength

Type

integer (opens new window)

Default value

64

The maximum length that objects' names can be.

View source (opens new window)

tempMyCnfPath

Type

string (opens new window), null (opens new window)

Default value

null

The path to the temporary my.cnf file used for backups and restoration.

View source (opens new window)

Protected Properties

Property	Description
columnQuoteCharacter (opens new window)	string (opens new window), string (opens new window)[] – Character used to quote column names.
tableQuoteCharacter (opens new window)	string (opens new window), string (opens new window)[] – Character used to quote schema, table, etc.

Public Methods

Method	Description
__call() (opens new window)	Calls the named method which is not a class method.
__construct() (opens new window)	Constructor.
__get() (opens new window)	Returns the value of an object property.
__isset() (opens new window)	Checks if a property is set, i.e. defined and not null.
__set() (opens new window)	Sets value of an object property.
__unset() (opens new window)	Sets an object property to null.
canGetProperty() (opens new window)	Returns a value indicating whether a property can be read.
canSetProperty() (opens new window)	Returns a value indicating whether a property can be set.
className() (opens new window)	Returns the fully qualified name of this class.
convertException() (opens new window)	Converts a DB exception to a more concrete one if possible.
createColumnSchemaBuilder()	Create a column schema builder instance giving the type and value precision.
createQueryBuilder()	Creates a query builder for the database.
createSavepoint() (opens new window)	Creates a new savepoint.
findIndexes()	Returns all indexes for the given table. Each array element is of the following structure:
findUniqueIndexes() (opens new window)	Returns all unique indexes for the given table.
getDefaultBackupCommand()	Returns the default backup command to execute.
getDefaultRestoreCommand()	Returns the default database restore command to execute.
getLastInsertID() (opens new window)	Returns the ID of the last inserted row or sequence value.
getPdoType() (opens new window)	Determines the PDO type for the given PHP data value.
getQueryBuilder() (opens new window)
getRawTableName() (opens new window)	Returns the actual name of a given table name.
getSchemaChecks() (opens new window)	Returns check constraints for all tables in the database.
getSchemaDefaultValues() (opens new window)	Returns default value constraints for all tables in the database.
getSchemaForeignKeys() (opens new window)	Returns foreign keys for all tables in the database.
getSchemaIndexes() (opens new window)	Returns indexes for all tables in the database.
getSchemaNames() (opens new window)	Returns all schema names in the database, except system schemas.
getSchemaPrimaryKeys() (opens new window)	Returns primary keys for all tables in the database.
getSchemaUniques() (opens new window)	Returns unique constraints for all tables in the database.
getServerVersion() (opens new window)	Returns a server version as a string comparable by \version_compare().
getTableChecks() (opens new window)	Obtains the check constraints information for the named table.
getTableDefaultValues() (opens new window)	Obtains the default value constraints information for the named table.
getTableForeignKeys() (opens new window)	Obtains the foreign keys information for the named table.
getTableIndexes() (opens new window)	Obtains the indexes information for the named table.
getTableNames() (opens new window)	Returns all table names in the database.
getTablePrimaryKey() (opens new window)	Obtains the primary key for the named table.
getTableSchema()	Obtains the schema information for the named table.
getTableSchemas() (opens new window)	Returns the metadata for all tables in the database.
getTableUniques() (opens new window)	Obtains the unique constraints information for the named table.
hasMethod() (opens new window)	Returns a value indicating whether a method is defined.
hasProperty() (opens new window)	Returns a value indicating whether a property is defined.
init()	Initializes the object.
insert() (opens new window)	Executes the INSERT command, returning primary key values.
isReadQuery() (opens new window)	Returns a value indicating whether a SQL statement is for read purpose.
quoteColumnName() (opens new window)	Quotes a column name for use in a query.
quoteDatabaseName()	Quotes a database name for use in a query.
quoteSimpleColumnName() (opens new window)	Quotes a simple column name for use in a query.
quoteSimpleTableName() (opens new window)	Quotes a simple table name for use in a query.
quoteTableName() (opens new window)	Quotes a table name for use in a query.
quoteValue() (opens new window)	Quotes a string value for use in a query.
refresh() (opens new window)	Refreshes the schema.
refreshTableSchema() (opens new window)	Refreshes the particular table schema.
releaseSavepoint()	Releases an existing savepoint.
rollBackSavepoint()	Rolls back to a previously created savepoint.
setTransactionIsolationLevel() (opens new window)	Sets the isolation level of the current transaction.
supportsSavepoint() (opens new window)
unquoteSimpleColumnName() (opens new window)	Unquotes a simple column name.
unquoteSimpleTableName() (opens new window)	Unquotes a simple table name.

createColumnSchemaBuilder()

Create a column schema builder instance giving the type and value precision.

This method may be overridden by child classes to create a DBMS-specific column schema builder.

View source (opens new window)

Arguments

• $type (string (opens new window)) – Type of the column. See craft\db\mysql\ColumnSchemaBuilder::$type (opens new window).
• $length (integer (opens new window), string (opens new window), array (opens new window)) – Length or precision of the column. See craft\db\mysql\ColumnSchemaBuilder::$length (opens new window).

Returns

craft\db\mysql\ColumnSchemaBuilder – Column schema builder instance

createQueryBuilder()

Creates a query builder for the database.

This method may be overridden by child classes to create a DBMS-specific query builder.

View source (opens new window)

Returns

craft\db\mysql\QueryBuilder – Query builder instance

findIndexes()

Returns all indexes for the given table. Each array element is of the following structure:

[
    'IndexName' => [
        'columns' => ['col1' [, ...]],
        'unique' => false
    ],
]

View source (opens new window)

Arguments

• $tableName (string (opens new window)) – The name of the table to get the indexes for.

Returns

array (opens new window) – All indexes for the given table.

Throws

• yii\base\NotSupportedException (opens new window)

getDefaultBackupCommand()

Returns the default backup command to execute.

View source (opens new window)

Arguments

• $ignoreTables

Returns

string (opens new window) – The command to execute

Throws

• yii\base\ErrorException (opens new window)

getDefaultRestoreCommand()

Returns the default database restore command to execute.

View source (opens new window)

Returns

string (opens new window) – The command to execute

Throws

• yii\base\ErrorException (opens new window)

getTableSchema()

Obtains the schema information for the named table.

View source (opens new window)

Arguments

• $name
• $refresh

Returns

craft\db\TableSchema, null (opens new window) –

init()

Initializes the object.

This method is invoked at the end of the constructor after the object is initialized with the given configuration.

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quoteDatabaseName()

Quotes a database name for use in a query.

View source (opens new window)

Arguments

• $name (string (opens new window))

Returns

string (opens new window)

releaseSavepoint()

Releases an existing savepoint.

View source (opens new window)

Arguments

• $name (string (opens new window)) – The savepoint name.

Throws

• yii\db\Exception (opens new window)

rollBackSavepoint()

Rolls back to a previously created savepoint.

View source (opens new window)

Arguments

• $name (string (opens new window)) – The savepoint name.

Throws

• yii\db\Exception (opens new window)

Protected Methods

Method	Description
createColumnSchema() (opens new window)	Creates a column schema for the database.
findColumns() (opens new window)	Collects the metadata of table columns.
findConstraints()	Collects extra foreign key information details for the given table.
findSchemaNames() (opens new window)	Returns all schema names in the database, including the default one but not system schemas.
findTableNames() (opens new window)	Returns all table names in the database.
getCacheKey() (opens new window)	Returns the cache key for the specified table name.
getCacheTag() (opens new window)	Returns the cache tag name.
getColumnPhpType() (opens new window)	Extracts the PHP type from abstract DB type.
getCreateTableSql() (opens new window)	Gets the CREATE TABLE sql string.
getSchemaMetadata() (opens new window)	Returns the metadata of the given type for all tables in the given schema.
getTableMetadata() (opens new window)	Returns the metadata of the given type for the given table.
getTableNameParts() (opens new window)	Splits full table name into parts
isOldMysql() (opens new window)
loadColumnSchema() (opens new window)	Loads the column information into a yii\db\mysql\ColumnSchema (opens new window) object.
loadTableChecks() (opens new window)	Loads all check constraints for the given table.
loadTableDefaultValues() (opens new window)	Loads all default value constraints for the given table.
loadTableForeignKeys() (opens new window)	Loads all foreign keys for the given table.
loadTableIndexes() (opens new window)	Loads all indexes for the given table.
loadTablePrimaryKey() (opens new window)	Loads a primary key for the given table.
loadTableSchema()	Loads the metadata for the specified table.
loadTableUniques() (opens new window)	Loads all unique constraints for the given table.
normalizePdoRowKeyCase() (opens new window)	Changes row's array key case to lower if PDO's one is set to uppercase.
resolveTableName() (opens new window)	Resolves the table name and schema name (if any).
resolveTableNames() (opens new window)	Resolves the table name and schema name (if any).
setTableMetadata() (opens new window)	Sets the metadata of the given type for the given table.

findConstraints()

Collects extra foreign key information details for the given table.

View source (opens new window)

Arguments

• $table (craft\db\TableSchema) – The table metadata

Throws

• yii\db\Exception (opens new window)

loadTableSchema()

Loads the metadata for the specified table.

View source (opens new window)

Arguments

• $name (string (opens new window)) – Table name

Returns

craft\db\TableSchema, null (opens new window) – Driver dependent table metadata. Null if the table does not exist.

Throws

• Exception (opens new window)

Constants

Constant	Description
SCHEMA_CACHE_VERSION	Schema cache version, to detect incompatibilities in cached values when the data format of the cache changes.
TYPE_BIGINT
TYPE_BIGPK
TYPE_BINARY
TYPE_BOOLEAN
TYPE_CHAR
TYPE_DATE
TYPE_DATETIME
TYPE_DECIMAL
TYPE_DOUBLE
TYPE_ENUM
TYPE_FLOAT
TYPE_INTEGER
TYPE_JSON
TYPE_LONGTEXT
TYPE_MEDIUMTEXT
TYPE_MONEY
TYPE_PK
TYPE_SMALLINT
TYPE_STRING
TYPE_TEXT
TYPE_TIME
TYPE_TIMESTAMP
TYPE_TINYINT
TYPE_TINYTEXT
TYPE_UBIGPK
TYPE_UPK