GdaTreeMgrSelect: GNOME Data Access 5 manual

GdaTreeMgrSelect

GdaTreeMgrSelect — A tree manager which creates a node for each row resulting from the execution of a SELECT statement

Stability Level

Stable, unless otherwise indicated

Functions

Properties

GdaConnection *	connection	Read / Write / Construct Only
GdaSet *	params	Read / Write / Construct Only
GdaStatement *	statement	Read / Write / Construct Only

Types and Values

struct

GdaTreeMgrSelect

Object Hierarchy

    GObject
    ╰── GdaTreeManager
        ╰── GdaTreeMgrSelect

Includes

#include <libgda/gda-statement-extra.h>

Description

The GdaTreeMgrSelect is a GdaTreeManager object which executes a SELECT statement and creates a node for each row in the result.

The GdaConnection and SELECT GdaStatement to be used need to be specified when the object is created. If the SELECT statement to be used needs some parameters, then it is possible to give values to some of them when constructing the object, but not necessary.

If the SELECT statement needs some parameters which have not been provided during the construction, then these parameters will be fetched from the GdaTreeNode below which the nodes will be placed (using gda_tree_node_fetch_attribute()).

For each node created, an attribute is set for each column in the SELECT statement: the attribute name is the column name and the attribute value is the value if that column.

Functions

gda_tree_mgr_select_new ()

GdaTreeManager *
gda_tree_mgr_select_new (GdaConnection *cnc,
                         GdaStatement *stmt,
                         GdaSet *params);

Creates a new GdaTreeMgrSelect object which will add one tree node for each row in the GdaDataModel resulting from the execution of stmt .

Parameters

cnc	a GdaConnection object
stmt	a GdaStatement object representing a SELECT statement
params	a GdaSet object representing fixed parameters which are to be used when executing `stmt`

Returns

a new GdaTreeManager object.

[transfer full]

Since: 4.2

Types and Values

struct GdaTreeMgrSelect

struct GdaTreeMgrSelect;

Property Details

The `“connection”` property

  “connection”               GdaConnection *

Connection to use.

Owner: GdaTreeMgrSelect

Flags: Read / Write / Construct Only

The `“params”` property

  “params”                   GdaSet *

Parameters for the SELECT statement.

Owner: GdaTreeMgrSelect

Flags: Read / Write / Construct Only

The `“statement”` property

  “statement”                GdaStatement *

SELECT statement.

Owner: GdaTreeMgrSelect

Flags: Read / Write / Construct Only