SqlUtil::Table Class Reference

represents a database table; this class embeds an AbstractTable object that is created automatically in the constructor based on the database driver for the AbstractDatasource object providing the database connection More...

Public Member Methods
	constructor (AbstractDatasource ds, hash< auto > desc, string name, *hash< auto > opts)
	creates the object from a table description hash More...
	constructor (AbstractDatasource ds, string name, *hash< auto > opts)
	creates the Table object More...
	constructor (hash< auto > ds, string name, *hash< auto > opts)
	creates the Table object More...
	constructor (string ds, string name, *hash< auto > opts)
	creates the Table object More...
AbstractTable	getTable ()
	returns the AbstractTable object contained by this object
auto	methodGate (string meth)
	executes a method on the contained AbstractTable object More...

Private Attributes
AbstractTable	t
	the embedded AbstractTable object that actually provides the functionality for this class

Detailed Description

represents a database table; this class embeds an AbstractTable object that is created automatically in the constructor based on the database driver for the AbstractDatasource object providing the database connection

Driver-specific modules that provide the AbstractTable implementation embedded in this class are loaded on demand based on the driver's name. The driver-specific module's name is generated based on the db-driver's name with the first letter capitalized then with "SqlUtil" appended.

Note

SqlUtil::Table does not provide any functionality except it is able to create real low level AbstractTable inherited object. All functionality is provided by embedded AbstractTable object.

For example:

• "oracle": OracleSqlUtil
• "pgsql": PgsqlSqlUtil
• "mysql": MysqlSqlUtil

etc.

Note

Objects of Table class can hold AbstractTable pointing to a view in Oracle.

Member Function Documentation

constructor() [1/4]

SqlUtil::Table::constructor	(	AbstractDatasource	ds,
		hash< auto >	desc,
		string	name,
		*hash< auto >	opts
	)

creates the object from a table description hash

Parameters

ds	the AbstractDatasource for the connection to the database
desc	a table description hash describing the table
name	the name of the table
opts	an optional hash of options for the table creation string; see SqlUtil::AbstractTable::TableOptions for common options; each driver can support additional driver-specific options

Exceptions

OPTION-ERROR	invalid or unsupported option passed
DESCRIPTION-ERROR	invalid or unsupported description hash value passed

constructor() [2/4]

SqlUtil::Table::constructor	(	AbstractDatasource	ds,
		string	name,
		*hash< auto >	opts
	)

creates the Table object

Example:

Table table(ds, "table");

Parameters

ds	the AbstractDatasource object used to provide the DB connection
name	the name of the table
opts	a hash of options for the table creation string; see SqlUtil::AbstractTable::TableOptions for common options; each driver can support additional driver-specific options

Exceptions

TABLE-DRIVER-ERROR	no database-specific module can be loaded
OPTION-ERROR	invalid or unsupported option passed

constructor() [3/4]

SqlUtil::Table::constructor	(	hash< auto >	ds,
		string	name,
		*hash< auto >	opts
	)

creates the Table object

Example:

Table table("pgsql:user/pass@db%host", "table");

Parameters

ds	a hash giving parameters for the new datasource with the following possible keys (the "type" key is mandatory, also usable with the output of the parse_datasource() function): type: (*string) The name of the database driver to use; this key is mandatory; if not present, an exception will be raised. See SQL Constants for builtin constants for DBI drivers shipped with Qore, or see the DBI driver documentation to use an add-on driver (this string should be the name of the driver to be loaded) user: (*string) The user name for the new connection pass: (*string) The password for the new connection db: (*string) The database name for the new connection charset: (*string) The database-specific name of the character encoding to use for the new connection. Also see Qore::SQL::Datasource::setDBCharset() for a method that allows this parameter to be set after the constructor. If no value is passed for this parameter, then the database character encoding corresponding to the default character encoding for the Qore process will be used instead. host: (*string) The host name for the new connection port: (softint) The port number for the new connection options: (*hash) Any options for the new connection
name	the name of the table
opts	a hash of options for the table creation string; see SqlUtil::AbstractTable::TableOptions for common options; each driver can support additional driver-specific options

Exceptions

TABLE-DRIVER-ERROR	no database-specific module can be loaded
OPTION-ERROR	invalid or unsupported option passed

constructor() [4/4]

SqlUtil::Table::constructor	(	string	ds,
		string	name,
		*hash< auto >	opts
	)

creates the Table object

Example:

Table table("pgsql:user/pass@db%host", "table");

Parameters

ds	a datasource description string in the format that can be parsed by parse_datasource()
name	the name of the table
opts	a hash of options for the table creation string; see SqlUtil::AbstractTable::TableOptions for common options; each driver can support additional driver-specific options

Exceptions

TABLE-DRIVER-ERROR	no database-specific module can be loaded
OPTION-ERROR	invalid or unsupported option passed

methodGate()

auto SqlUtil::Table::methodGate

(

string

meth

)

executes a method on the contained AbstractTable object

See SqlUtil::AbstractTable API for reference