Arc::Query Class Reference

Inheritance diagram for Arc::Query:

Public Member Functions
	Query ()
	Query (Database *db)
virtual	~Query ()
virtual int	get_num_colums ()=0
virtual int	get_num_rows ()=0
virtual bool	execute (const std::string &sqlstr)=0
virtual QueryRowResult	get_row (int row_number) const =0
virtual QueryRowResult	get_row () const =0
virtual std::string	get_row_field (int row_number, std::string &field_name)=0
virtual bool	get_array (std::string &sqlstr, QueryArrayResult &result, std::vector< std::string > &arguments)=0

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Constructor & Destructor Documentation

Arc::Query::Query

(

)

[inline]

Default constructor

Arc::Query::Query

(

Database *

db

)

[inline]

Constructor

Parameters:

db

The database object which will be used by Query class to get the database connection

virtual Arc::Query::~Query

(

)

[inline, virtual]

Deconstructor

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Member Function Documentation

virtual bool Arc::Query::execute

(

const std::string &

sqlstr

)

[pure virtual]

Execute the query

Parameters:

sqlstr

The sql sentence used to query

Implemented in Arc::MySQLQuery.

virtual bool Arc::Query::get_array	(	std::string &	sqlstr,
		QueryArrayResult &	result,
		std::vector< std::string > &	arguments
	)			[pure virtual]

Query the database by using some parameters into sql sentence e.g. "select table.value from table where table.name = ?"

Parameters:

	sqlstr	The sql sentence with some parameters marked with "?".
	result	The result in an array which includes all of the value in query result.
	arguments	The argument list which should exactely correspond with the parametes in sql sentence.

Implemented in Arc::MySQLQuery.

virtual int Arc::Query::get_num_colums

(

)

[pure virtual]

Get the colum number in the query result

Implemented in Arc::MySQLQuery.

virtual int Arc::Query::get_num_rows

(

)

[pure virtual]

Get the row number in the query result

Implemented in Arc::MySQLQuery.

virtual QueryRowResult Arc::Query::get_row

(

)

const [pure virtual]

Get the value of one row in the query result, the row number will be automatically increased each time the method is called

Implemented in Arc::MySQLQuery.

virtual QueryRowResult Arc::Query::get_row

(

int

row_number

)

const [pure virtual]

Get the value of one row in the query result

Parameters:

row_number

The number of the row

Returns:

A vector includes all the values in the row

Implemented in Arc::MySQLQuery.

virtual std::string Arc::Query::get_row_field	(	int	row_number,
		std::string &	field_name
	)			[pure virtual]

Get the value of one specific field in one specific row

Parameters:

	row_number	The row number inside the query result
	field_name	The field name for the value which will be return

Returns:

The value of the specified filed in the specified row

Implemented in Arc::MySQLQuery.

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The documentation for this class was generated from the following file:

• DBInterface.h