Class PostgresSchemaDialect

Schema management/reflection features for Postgres.

Namespace: Cake\Database\Schema

Properties summary

  • $_driver protected
    \Cake\Database\DriverInterface

    The driver instance being used.

Method Summary

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.

_convertColumn() protected 

_convertColumn(string $column)

Convert a column definition to the abstract types.

The returned type will be a type that Cake\Database\TypeFactory can handle.

Parameters

string $column

The column type + length

Returns

array

Array of column information.

Throws

Cake\Database\Exception
when column cannot be parsed.

_convertConstraint() protected 

_convertConstraint(\Cake\Database\Schema\TableSchema $schema, string $name, string $type, array $row)

Add/update a constraint into the schema object.

Parameters

\Cake\Database\Schema\TableSchema $schema

The table to update.

string $name

The index name.

string $type

The index type.

array $row

The metadata record to update with.

_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

_defaultValue() protected 

_defaultValue(mixed $default)

Manipulate the default value.

Postgres includes sequence data and casting information in default values. We need to remove those.

Parameters

string|int|null $default

The default value.

Returns

string|int|null

_foreignOnClause() protected 

_foreignOnClause(string $on)

Generate an ON clause for a foreign key.

Parameters

string $on

The on clause

Returns

string

_keySql() protected 

_keySql(string $prefix, array $data)

Helper method for generating key SQL snippets.

Parameters

string $prefix

The key prefix

array $data

Key data.

Returns

string

addConstraintSql() 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() 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() public 

constraintSql(\Cake\Database\Schema\TableSchema $schema, string $name)

Generate the SQL fragments for defining table constraints.

Parameters

\Cake\Database\Schema\TableSchema $schema

The table instance the column is in.

string $name

The name of the column.

Returns

string

SQL fragment.

convertColumnDescription() 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() 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() 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

\Cake\Database\Schema\TableSchema $schema

Table instance.

array $row

The row of data.

createTableSql() public 

createTableSql(\Cake\Database\Schema\TableSchema $schema, array $columns, array $constraints, array $indexes)

Generate the SQL to create a table.

Parameters

\Cake\Database\Schema\TableSchema $schema

Table instance.

string[] $columns

The columns to go inside the table.

string[] $constraints

The constraints for the table.

string[] $indexes

The indexes for the table.

Returns

string[]

SQL statements to create a table.

describeColumnSql() 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() 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() 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() 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

Table instance

Returns

array

SQL statements to drop a table.

indexSql() 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() 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() 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.

Property Detail

$_driver protected

The driver instance being used.

Type

\Cake\Database\DriverInterface

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