dm_db_select_json_logs Interface

public interface dm_db_select_json_logs

Generic JSON logs select function.


Module Procedures

private function db_select_json_logs_array(db, strings, node_id, sensor_id, target_id, source, from, to, min_level, max_level, error, desc, limit, nlogs) result(rc)

Returns logs in JSON format in allocatable string type array strings.

If no logs have been found, the array will be empty, and the function returns E_DB_NO_ROWS.

The function returns the following error codes:

  • E_ALLOC if memory allocation failed.
  • E_DB_BIND if value binding failed.
  • E_DB_FINALIZE if statement finalisation failed.
  • E_DB_NO_ROWS if no rows are returned.
  • E_DB_PREPARE if statement preparation failed.
  • E_DB_TYPE if returned columns are unexpected.

Arguments

Type IntentOptional Attributes Name
type(db_type), intent(inout) :: db

Database type.
type(string_type), intent(out), allocatable :: strings(:)

Returned JSON array.
character(len=*), intent(in), optional :: node_id

Node id.
character(len=*), intent(in), optional :: sensor_id

Sensor id.
character(len=*), intent(in), optional :: target_id

Target id.
character(len=*), intent(in), optional :: source

Source name.
character(len=*), intent(in), optional :: from

Begin of time range.
character(len=*), intent(in), optional :: to

End of time range.
integer, intent(in), optional :: min_level

Minimum log level.
integer, intent(in), optional :: max_level

Maximum log level.
integer, intent(in), optional :: error

Error code.
logical, intent(in), optional :: desc

Descending order.
integer(kind=i8), intent(in), optional :: limit

Max. numbers of logs.
integer(kind=i8), intent(out), optional :: nlogs

Number of logs.

Return Value integer

private function db_select_json_logs_iter(db, db_stmt, json, node_id, sensor_id, target_id, source, from, to, min_level, max_level, error, desc, limit) result(rc)

Iterator function that returns logs in JSON format in allocatable character json. The statement db_stmt must be finalised once finished.

If no logs have been found, the string will be empty, and the function returns E_DB_NO_ROWS.

The function returns the following error codes:

  • E_DB_BIND if value binding failed.
  • E_DB_NO_ROWS if no rows are returned.
  • E_DB_PREPARE if statement preparation failed.
  • E_DB_TYPE if returned columns are unexpected.

Arguments

Type IntentOptional Attributes Name
type(db_type), intent(inout) :: db

Database type.
type(db_stmt_type), intent(inout) :: db_stmt

Database statement type.
character(len=:), intent(out), allocatable :: json

Returned JSON.
character(len=*), intent(in), optional :: node_id

Node id.
character(len=*), intent(in), optional :: sensor_id

Sensor id.
character(len=*), intent(in), optional :: target_id

Target id.
character(len=*), intent(in), optional :: source

Source name.
character(len=*), intent(in), optional :: from

Begin of time range.
character(len=*), intent(in), optional :: to

End of time range.
integer, intent(in), optional :: min_level

Minimum log level.
integer, intent(in), optional :: max_level

Maximum log level.
integer, intent(in), optional :: error

Error code.
logical, intent(in), optional :: desc

Descending order.
integer(kind=i8), intent(in), optional :: limit

Max. numbers of logs.

Return Value integer