Trait yii\db\ConstraintFinderTrait

All Classes | Methods

Implemented by	yii\db\cubrid\Schema, yii\db\mssql\Schema, yii\db\mysql\Schema, yii\db\oci\Schema, yii\db\pgsql\Schema, yii\db\sqlite\Schema
Available since version	2.0.13
Source Code	https://github.com/yiisoft/yii2/blob/master/framework/db/ConstraintFinderTrait.php

ConstraintFinderTrait provides methods for getting a table constraint information.

Public Methods

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Method	Description	Defined By
getSchemaChecks()	Returns check constraints for all tables in the database.	yii\db\ConstraintFinderTrait
getSchemaDefaultValues()	Returns default value constraints for all tables in the database.	yii\db\ConstraintFinderTrait
getSchemaForeignKeys()	Returns foreign keys for all tables in the database.	yii\db\ConstraintFinderTrait
getSchemaIndexes()	Returns indexes for all tables in the database.	yii\db\ConstraintFinderTrait
getSchemaPrimaryKeys()	Returns primary keys for all tables in the database.	yii\db\ConstraintFinderTrait
getSchemaUniques()	Returns unique constraints for all tables in the database.	yii\db\ConstraintFinderTrait
getTableChecks()	Obtains the check constraints information for the named table.	yii\db\ConstraintFinderTrait
getTableDefaultValues()	Obtains the default value constraints information for the named table.	yii\db\ConstraintFinderTrait
getTableForeignKeys()	Obtains the foreign keys information for the named table.	yii\db\ConstraintFinderTrait
getTableIndexes()	Obtains the indexes information for the named table.	yii\db\ConstraintFinderTrait
getTablePrimaryKey()	Obtains the primary key for the named table.	yii\db\ConstraintFinderTrait
getTableUniques()	Obtains the unique constraints information for the named table.	yii\db\ConstraintFinderTrait

Protected Methods

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Method	Description	Defined By
getSchemaMetadata()	Returns the metadata of the given type for all tables in the given schema.	yii\db\ConstraintFinderTrait
getTableMetadata()	Returns the metadata of the given type for the given table.	yii\db\ConstraintFinderTrait
loadTableChecks()	Loads all check constraints for the given table.	yii\db\ConstraintFinderTrait
loadTableDefaultValues()	Loads all default value constraints for the given table.	yii\db\ConstraintFinderTrait
loadTableForeignKeys()	Loads all foreign keys for the given table.	yii\db\ConstraintFinderTrait
loadTableIndexes()	Loads all indexes for the given table.	yii\db\ConstraintFinderTrait
loadTablePrimaryKey()	Loads a primary key for the given table.	yii\db\ConstraintFinderTrait
loadTableUniques()	Loads all unique constraints for the given table.	yii\db\ConstraintFinderTrait

Method Details

getSchemaChecks() public method

Returns check constraints for all tables in the database.

public \yii\db\CheckConstraint[][] getSchemaChecks ( $schema = '', $refresh = false )
$schema	string	The schema of the tables. Defaults to empty string, meaning the current or default schema name.
$refresh	boolean	Whether to fetch the latest available table schemas. If this is false, cached data may be returned if available.
return	\yii\db\CheckConstraint[][]	Check constraints for all tables in the database. Each array element is an array of yii\db\CheckConstraint or its child classes.

getSchemaDefaultValues() public method

Returns default value constraints for all tables in the database.

public yii\db\DefaultValueConstraint[] getSchemaDefaultValues ( $schema = '', $refresh = false )
$schema	string	The schema of the tables. Defaults to empty string, meaning the current or default schema name.
$refresh	boolean	Whether to fetch the latest available table schemas. If this is false, cached data may be returned if available.
return	yii\db\DefaultValueConstraint[]	Default value constraints for all tables in the database. Each array element is an array of yii\db\DefaultValueConstraint or its child classes.

getSchemaForeignKeys() public method

Returns foreign keys for all tables in the database.

public \yii\db\ForeignKeyConstraint[][] getSchemaForeignKeys ( $schema = '', $refresh = false )
$schema	string	The schema of the tables. Defaults to empty string, meaning the current or default schema name.
$refresh	boolean	Whether to fetch the latest available table schemas. If this is false, cached data may be returned if available.
return	\yii\db\ForeignKeyConstraint[][]	Foreign keys for all tables in the database. Each array element is an array of yii\db\ForeignKeyConstraint or its child classes.

getSchemaIndexes() public method

Returns indexes for all tables in the database.

public \yii\db\IndexConstraint[][] getSchemaIndexes ( $schema = '', $refresh = false )
$schema	string	The schema of the tables. Defaults to empty string, meaning the current or default schema name.
$refresh	boolean	Whether to fetch the latest available table schemas. If this is false, cached data may be returned if available.
return	\yii\db\IndexConstraint[][]	Indexes for all tables in the database. Each array element is an array of yii\db\IndexConstraint or its child classes.

getSchemaMetadata() protected abstract method

Returns the metadata of the given type for all tables in the given schema.

protected abstract array getSchemaMetadata ( $schema, $type, $refresh )
$schema	string	The schema of the metadata. Defaults to empty string, meaning the current or default schema name.
$type	string	Metadata type.
$refresh	boolean	Whether to fetch the latest available table metadata. If this is `false`, cached data may be returned if available.
return	array	Array of metadata.

getSchemaPrimaryKeys() public method

Returns primary keys for all tables in the database.

public yii\db\Constraint[] getSchemaPrimaryKeys ( $schema = '', $refresh = false )
$schema	string	The schema of the tables. Defaults to empty string, meaning the current or default schema name.
$refresh	boolean	Whether to fetch the latest available table schemas. If this is `false`, cached data may be returned if available.
return	yii\db\Constraint[]	Primary keys for all tables in the database. Each array element is an instance of yii\db\Constraint or its child class.

getSchemaUniques() public method

Returns unique constraints for all tables in the database.

public \yii\db\Constraint[][] getSchemaUniques ( $schema = '', $refresh = false )
$schema	string	The schema of the tables. Defaults to empty string, meaning the current or default schema name.
$refresh	boolean	Whether to fetch the latest available table schemas. If this is false, cached data may be returned if available.
return	\yii\db\Constraint[][]	Unique constraints for all tables in the database. Each array element is an array of yii\db\Constraint or its child classes.

getTableChecks() public method

Obtains the check constraints information for the named table.

public yii\db\CheckConstraint[] getTableChecks ( $name, $refresh = false )
$name	string	Table name. The table name may contain schema name if any. Do not quote the table name.
$refresh	boolean	Whether to reload the information even if it is found in the cache.
return	yii\db\CheckConstraint[]	Table check constraints.

getTableDefaultValues() public method

Obtains the default value constraints information for the named table.

public yii\db\DefaultValueConstraint[] getTableDefaultValues ( $name, $refresh = false )
$name	string	Table name. The table name may contain schema name if any. Do not quote the table name.
$refresh	boolean	Whether to reload the information even if it is found in the cache.
return	yii\db\DefaultValueConstraint[]	Table default value constraints.

getTableForeignKeys() public method

Obtains the foreign keys information for the named table.

public yii\db\ForeignKeyConstraint[] getTableForeignKeys ( $name, $refresh = false )
$name	string	Table name. The table name may contain schema name if any. Do not quote the table name.
$refresh	boolean	Whether to reload the information even if it is found in the cache.
return	yii\db\ForeignKeyConstraint[]	Table foreign keys.

getTableIndexes() public method

Obtains the indexes information for the named table.

public yii\db\IndexConstraint[] getTableIndexes ( $name, $refresh = false )
$name	string	Table name. The table name may contain schema name if any. Do not quote the table name.
$refresh	boolean	Whether to reload the information even if it is found in the cache.
return	yii\db\IndexConstraint[]	Table indexes.

getTableMetadata() protected abstract method

Returns the metadata of the given type for the given table.

protected abstract mixed getTableMetadata ( $name, $type, $refresh )
$name	string	Table name. The table name may contain schema name if any. Do not quote the table name.
$type	string	Metadata type.
$refresh	boolean	Whether to reload the table metadata even if it is found in the cache.
return	mixed	Metadata.

getTablePrimaryKey() public method

Obtains the primary key for the named table.

public yii\db\Constraint\|null getTablePrimaryKey ( $name, $refresh = false )
$name	string	Table name. The table name may contain schema name if any. Do not quote the table name.
$refresh	boolean	Whether to reload the information even if it is found in the cache.
return	yii\db\Constraint\|null	Table primary key, `null` if the table has no primary key.

getTableUniques() public method

Obtains the unique constraints information for the named table.

public yii\db\Constraint[] getTableUniques ( $name, $refresh = false )
$name	string	Table name. The table name may contain schema name if any. Do not quote the table name.
$refresh	boolean	Whether to reload the information even if it is found in the cache.
return	yii\db\Constraint[]	Table unique constraints.

loadTableChecks() protected abstract method

Loads all check constraints for the given table.

protected abstract yii\db\CheckConstraint[] loadTableChecks ( $tableName )
$tableName	string	Table name.
return	yii\db\CheckConstraint[]	Check constraints for the given table.

loadTableDefaultValues() protected abstract method

Loads all default value constraints for the given table.

protected abstract yii\db\DefaultValueConstraint[] loadTableDefaultValues ( $tableName )
$tableName	string	Table name.
return	yii\db\DefaultValueConstraint[]	Default value constraints for the given table.

loadTableForeignKeys() protected abstract method

Loads all foreign keys for the given table.

protected abstract yii\db\ForeignKeyConstraint[] loadTableForeignKeys ( $tableName )
$tableName	string	Table name.
return	yii\db\ForeignKeyConstraint[]	Foreign keys for the given table.

loadTableIndexes() protected abstract method

Loads all indexes for the given table.

protected abstract yii\db\IndexConstraint[] loadTableIndexes ( $tableName )
$tableName	string	Table name.
return	yii\db\IndexConstraint[]	Indexes for the given table.

loadTablePrimaryKey() protected abstract method

Loads a primary key for the given table.

protected abstract yii\db\Constraint\|null loadTablePrimaryKey ( $tableName )
$tableName	string	Table name.
return	yii\db\Constraint\|null	Primary key for the given table, `null` if the table has no primary key.

loadTableUniques() protected abstract method

Loads all unique constraints for the given table.

protected abstract yii\db\Constraint[] loadTableUniques ( $tableName )
$tableName	string	Table name.
return	yii\db\Constraint[]	Unique constraints for the given table.