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GDataAccessHandler

GDataAccessHandler — GData access handler interface

Stability Level

Stable, unless otherwise indicated

Object Hierarchy

    GInterface
    ╰── GDataAccessHandler

Prerequisites

GDataAccessHandler requires GDataEntry.

Includes

#include <gdata/gdata-access-handler.h>

Description

GDataAccessHandler is an interface which can be implemented by GDataEntrys which can have their permissions controlled by an access control list (ACL). It has a set of methods which allow the GDataAccessRules for the access handler/entry to be retrieved, added, modified and deleted, with immediate effect.

For an example of inserting an access rule into an ACL, see the documentation for GDataAccessRule.

When implementing the interface, classes must implement an is_owner_rule function. It's optional to implement a get_authorization_domain function, but if it's not implemented, any operations on the access handler's GDataAccessRules will be performed unauthorized (i.e. as if by a non-logged-in user). This will not usually work.

Functions

gdata_access_handler_get_rules ()

GDataFeed *
gdata_access_handler_get_rules (GDataAccessHandler *self,
                                GDataService *service,
                                GCancellable *cancellable,
                                GDataQueryProgressCallback progress_callback,
                                gpointer progress_user_data,
                                GError **error);

Retrieves a GDataFeed containing all the access rules which apply to the given GDataAccessHandler. Only the owner of a GDataAccessHandler may view its rule feed.

If cancellable is not NULL, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error G_IO_ERROR_CANCELLED will be returned.

A GDATA_SERVICE_ERROR_PROTOCOL_ERROR will be returned if the server indicates there is a problem with the query.

For each rule in the response feed, progress_callback will be called in the main thread. If there was an error parsing the XML response, a GDataParserError will be returned.

Parameters

self

a GDataAccessHandler

 

service

a GDataService

 

cancellable

optional GCancellable object, or NULL.

[allow-none]

progress_callback

a GDataQueryProgressCallback to call when a rule is loaded, or NULL.

[allow-none][scope call][closure progress_user_data]

progress_user_data

data to pass to the progress_callback function.

[closure]

error

a GError, or NULL

 

Returns

a GDataFeed of access control rules, or NULL; unref with g_object_unref().

[transfer full]

Since: 0.3.0


gdata_access_handler_get_rules_async ()

void
gdata_access_handler_get_rules_async (GDataAccessHandler *self,
                                      GDataService *service,
                                      GCancellable *cancellable,
                                      GDataQueryProgressCallback progress_callback,
                                      gpointer progress_user_data,
                                      GDestroyNotify destroy_progress_user_data,
                                      GAsyncReadyCallback callback,
                                      gpointer user_data);

Retrieves a GDataFeed containing all the access rules which apply to the given GDataAccessHandler. Only the owner of a GDataAccessHandler may view its rule feed. self and service are both reffed when this function is called, so can safely be unreffed after this function returns.

For more details, see gdata_access_handler_get_rules(), which is the synchronous version of this function, and gdata_service_query_async(), which is the base asynchronous query function.

When the operation is finished, callback will be called. You can then call gdata_service_query_finish() to get the results of the operation.

Parameters

self

a GDataAccessHandler

 

service

a GDataService

 

cancellable

optional GCancellable object, or NULL.

[allow-none]

progress_callback

a GDataQueryProgressCallback to call when a rule is loaded, or NULL.

[allow-none][closure progress_user_data]

progress_user_data

data to pass to the progress_callback function.

[closure]

destroy_progress_user_data

the function to call when progress_callback will not be called any more, or NULL. This function will be called with progress_user_data as a parameter and can be used to free any memory allocated for it.

[allow-none]

callback

a GAsyncReadyCallback to call when the query is finished

 

user_data

data to pass to the callback function.

[closure]

Since: 0.9.1

Types and Values

GDATA_LINK_ACCESS_CONTROL_LIST

#define GDATA_LINK_ACCESS_CONTROL_LIST "http://schemas.google.com/acl/2007#accessControlList"

The relation type URI of the access control list location for this resource.

For more information, see the

ACL specification.

Since: 0.7.0


GDataAccessHandler

typedef struct _GDataAccessHandler GDataAccessHandler;

All the fields in the GDataAccessHandler structure are private and should never be accessed directly.

Since: 0.3.0


GDataAccessHandlerIface

typedef struct {
	GTypeInterface parent;

	gboolean (*is_owner_rule) (GDataAccessRule *rule);
	GDataAuthorizationDomain *(*get_authorization_domain) (GDataAccessHandler *self);

	GDataFeed *(*get_rules) (GDataAccessHandler *self,
	                         GDataService *service,
	                         GCancellable *cancellable,
	                         GDataQueryProgressCallback progress_callback,
	                         gpointer progress_user_data,
	                         GError **error);
} GDataAccessHandlerIface;

The class structure for the GDataAccessHandler interface.

Members

GTypeInterface parent;

the parent type

 

is_owner_rule ()

a function to return whether the given GDataAccessRule has the role of an owner (of a GDataAccessHandler).

 

get_authorization_domain ()

a function to return the GDataAuthorizationDomain to be used for all operations on the access rules belonging to this access handler; not implementing this function is equivalent to returning NULL from it, which signifies that operations on the access rules don't require authorization; new in version 0.9.0.

[allow-none]

get_rules ()

a function to query, parse and return a GDataFeed of GDataAccessRules for a given entry — the virtual function for gdata_access_handler_get_rules(); new in version 0.17.2.

[nullable]

Since: 0.9.0

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