dce_db_store(3dce)
Stores data into a backing store
Synopsis
#include <dce/dce.h>
#include <dce/dbif.h>
void dce_db_store(
dce_db_handle_t handle,
void *key,
void *data,
error_status_t *status);
Parameters
Input
handle
A handle, returned from dce_db_open( ), that identifies the backing store being used.
key
A string or UUID that is the backing store key. The datatype of key must match the key method that was selected in the flags parameter to
dce_db_open( ) when the backing store was created.
data
A pointer to the data structure to be stored.
Output
status
A pointer to the completion status. On successful completion, the routine returns error_status_ok. Otherwise, it returns an error.
Description
The dce_db_store( ) routine stores the data structure pointed to by data into the backing store. The conversion function that was specified in the
call to dce_db_open( ) serializes the structure so that it can be written to disk.
If the key value is the same as a key already stored, the new data replaces the previously stored data associated with that key.
Notes
Because the dce_db_store( ) routine uses the encoding services, and they in turn use rpc_sm_allocate( ), all programs that call dce_db_store( )
outside of a server operation (for instance, if a server does some backing store initialization, or in a standalone program) must call rpc_sm_enable_allocate( ) first. Indeed, every thread
that calls dce_db_store( ) must do rpc_sm_enable_allocate( ), but in the server side of an RPC, this is already done.
Errors
The following describes a partial list of errors that might be returned. Refer to the OSF DCE Problem Determination Guide for complete descriptions of all error messages.
db_s_bad_index_type
The key's type is wrong, or else the backing store is not by name or by UUID.
db_s_readonly
The backing store was opened with the db_c_readonly flag, and cannot be written to.
db_s_store_failed
The data could not be stored into the backing store for some reason. The global variable errno may contain more information about the error.
db_s_iter_not_allowed
The function was called while an iteration, begun by dce_db_iter_start( ), was in progress. Storing is not allowed during iteration.
error_status_ok
The call was successful.
Related Information
Functions: dce_db_fetch(3dce)