Class BaseSchema
Base class for schema implementations.
This class contains methods that are common across the various SQL dialects.
Properties summary
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$_driver protected
\Cake\Database\DriverInterface
The driver instance being used.
Method Summary
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__construct() public
Constructor
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_convertConstraintColumns() protected
Convert foreign key constraints references to a valid stringified list
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_convertOnClause() protected
Convert string on clauses to the abstract ones.
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_foreignOnClause() protected
Generate an ON clause for a foreign key.
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addConstraintSql() abstract public
Generate the SQL queries needed to add foreign key constraints to the table
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columnSql() abstract public
Generate the SQL fragment for a single column in a table.
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constraintSql() abstract public
Generate the SQL fragments for defining table constraints.
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convertColumnDescription() abstract public
Convert field description results into abstract schema fields.
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convertForeignKeyDescription() abstract public
Convert a foreign key description into constraints on the Table object.
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convertIndexDescription() abstract public
Convert an index description results into abstract schema indexes or constraints.
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convertOptionsDescription() public
Convert options data into table options.
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createTableSql() abstract public
Generate the SQL to create a table.
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describeColumnSql() abstract public
Generate the SQL to describe a table.
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describeForeignKeySql() abstract public
Generate the SQL to describe the foreign keys in a table.
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describeIndexSql() abstract public
Generate the SQL to describe the indexes in a table.
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describeOptionsSql() public
Generate the SQL to describe table options
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dropConstraintSql() abstract public
Generate the SQL queries needed to drop foreign key constraints from the table
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dropTableSql() public
Generate the SQL to drop a table.
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indexSql() abstract public
Generate the SQL fragment for a single index in a table.
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listTablesSql() abstract public
Generate the SQL to list the tables.
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truncateTableSql() abstract public
Generate the SQL to truncate a table.
Method Detail
__construct() public ¶
__construct(\Cake\Database\DriverInterface $driver)
Constructor
This constructor will connect the driver so that methods like columnSql() and others will fail when the driver has not been connected.
Parameters
-
\Cake\Database\DriverInterface
$driver The driver to use.
_convertConstraintColumns() protected ¶
_convertConstraintColumns(mixed $references)
Convert foreign key constraints references to a valid stringified list
Parameters
-
string|array
$references The referenced columns of a foreign key constraint statement
Returns
string
_convertOnClause() protected ¶
_convertOnClause(string $clause)
Convert string on clauses to the abstract ones.
Parameters
-
string
$clause The on clause to convert.
Returns
string
_foreignOnClause() protected ¶
_foreignOnClause(string $on)
Generate an ON clause for a foreign key.
Parameters
-
string
$on The on clause
Returns
string
addConstraintSql() abstract public ¶
addConstraintSql(\Cake\Database\Schema\TableSchema $schema)
Generate the SQL queries needed to add foreign key constraints to the table
Parameters
-
\Cake\Database\Schema\TableSchema
$schema The table instance the foreign key constraints are.
Returns
array
SQL fragment.
columnSql() abstract public ¶
columnSql(\Cake\Database\Schema\TableSchema $schema, string $name)
Generate the SQL fragment for a single column in a table.
Parameters
-
\Cake\Database\Schema\TableSchema
$schema The table instance the column is in.
-
string
$name The name of the column.
Returns
string
SQL fragment.
constraintSql() abstract public ¶
constraintSql(\Cake\Database\Schema\TableSchema $schema, string $name)
Generate the SQL fragments for defining table constraints.
Parameters
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\Cake\Database\Schema\TableSchema
$schema The table instance the column is in.
-
string
$name The name of the column.
Returns
string
SQL fragment.
convertColumnDescription() abstract public ¶
convertColumnDescription(\Cake\Database\Schema\TableSchema $schema, array $row)
Convert field description results into abstract schema fields.
Parameters
-
\Cake\Database\Schema\TableSchema
$schema The table object to append fields to.
-
array
$row The row data from
describeColumnSql
.
convertForeignKeyDescription() abstract public ¶
convertForeignKeyDescription(\Cake\Database\Schema\TableSchema $schema, array $row)
Convert a foreign key description into constraints on the Table object.
Parameters
-
\Cake\Database\Schema\TableSchema
$schema The table object to append a constraint to.
-
array
$row The row data from
describeForeignKeySql
.
convertIndexDescription() abstract public ¶
convertIndexDescription(\Cake\Database\Schema\TableSchema $schema, array $row)
Convert an index description results into abstract schema indexes or constraints.
Parameters
-
\Cake\Database\Schema\TableSchema
$schema The table object to append an index or constraint to.
-
array
$row The row data from
describeIndexSql
.
convertOptionsDescription() public ¶
convertOptionsDescription(\Cake\Database\Schema\TableSchema $schema, array $row)
Convert options data into table options.
Parameters
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\Cake\Database\Schema\TableSchema
$schema Table instance.
-
array
$row The row of data.
createTableSql() abstract public ¶
createTableSql(\Cake\Database\Schema\TableSchema $schema, array $columns, array $constraints, array $indexes)
Generate the SQL to create a table.
Parameters
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\Cake\Database\Schema\TableSchema
$schema Table instance.
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string[]
$columns The columns to go inside the table.
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string[]
$constraints The constraints for the table.
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string[]
$indexes The indexes for the table.
Returns
string[]
SQL statements to create a table.
describeColumnSql() abstract public ¶
describeColumnSql(string $tableName, array $config)
Generate the SQL to describe a table.
Parameters
-
string
$tableName The table name to get information on.
-
array
$config The connection configuration.
Returns
array
An array of (sql, params) to execute.
describeForeignKeySql() abstract public ¶
describeForeignKeySql(string $tableName, array $config)
Generate the SQL to describe the foreign keys in a table.
Parameters
-
string
$tableName The table name to get information on.
-
array
$config The connection configuration.
Returns
array
An array of (sql, params) to execute.
describeIndexSql() abstract public ¶
describeIndexSql(string $tableName, array $config)
Generate the SQL to describe the indexes in a table.
Parameters
-
string
$tableName The table name to get information on.
-
array
$config The connection configuration.
Returns
array
An array of (sql, params) to execute.
describeOptionsSql() public ¶
describeOptionsSql(string $tableName, array $config)
Generate the SQL to describe table options
Parameters
-
string
$tableName Table name.
-
array
$config The connection configuration.
Returns
array
SQL statements to get options for a table.
dropConstraintSql() abstract public ¶
dropConstraintSql(\Cake\Database\Schema\TableSchema $schema)
Generate the SQL queries needed to drop foreign key constraints from the table
Parameters
-
\Cake\Database\Schema\TableSchema
$schema The table instance the foreign key constraints are.
Returns
array
SQL fragment.
dropTableSql() public ¶
dropTableSql(\Cake\Database\Schema\TableSchema $schema)
Generate the SQL to drop a table.
Parameters
-
\Cake\Database\Schema\TableSchema
$schema Schema instance
Returns
array
SQL statements to drop a table.
indexSql() abstract public ¶
indexSql(\Cake\Database\Schema\TableSchema $schema, string $name)
Generate the SQL fragment for a single index in a table.
Parameters
-
\Cake\Database\Schema\TableSchema
$schema The table object the column is in.
-
string
$name The name of the column.
Returns
string
SQL fragment.
listTablesSql() abstract public ¶
listTablesSql(array $config)
Generate the SQL to list the tables.
Parameters
-
array
$config The connection configuration to use for getting tables from.
Returns
array
An array of (sql, params) to execute.
truncateTableSql() abstract public ¶
truncateTableSql(\Cake\Database\Schema\TableSchema $schema)
Generate the SQL to truncate a table.
Parameters
-
\Cake\Database\Schema\TableSchema
$schema Table instance.
Returns
array
SQL statements to truncate a table.