Beispiel #1
0
// Begin a transaction.
static void sedna_begin(SC *conn)
{
	int res;

	// Disable autocommit mode.
	SEDNA_AUTOCOMMIT_DISABLE(conn);
	
	// Start the transaction.
	res = SEbegin(conn);
	VERIFY_RES(SEDNA_BEGIN_TRANSACTION_SUCCEEDED, res, conn);
}
Beispiel #2
0
int main()
{
    struct SednaConnection conn = SEDNA_CONNECTION_INITIALIZER;
    int bytes_read, res, value;
    char buf[1024];

    const char* url = "localhost";
    const char* db_name = "testdb";
    const char* login = "******";
    const char* password = "******";

    printf("Client started.\n");
    
    value = SEDNA_AUTOCOMMIT_OFF;
    res = SEsetConnectionAttr(&conn, SEDNA_ATTR_AUTOCOMMIT, (void*)&value, sizeof(int));

    //connecting to database "testdb" with login "SYSTEM", password "MANAGER"
    res = SEconnect(&conn, url, db_name, login, password);
    if(res != SEDNA_SESSION_OPEN) 
    {
        printf("Session starting failed: \n%s\n", SEgetLastErrorMsg(&conn));
		return -1;
    }

    //begin transaction
    res = SEbegin(&conn);
    if(res != SEDNA_BEGIN_TRANSACTION_SUCCEEDED) 
    {
        printf("Begin transaction failed: \n%s\n", SEgetLastErrorMsg(&conn));
        //closing session
        SEclose(&conn);
        return -1;
    }

    // load data from file "region.xml" into the document "region"
    res = SEexecute(&conn, "LOAD \"..\\data\\region.xml\" \"region\""); 
    if(res != SEDNA_BULK_LOAD_SUCCEEDED) 
    {
        printf("Bulk load failed: \n%s\n", SEgetLastErrorMsg(&conn));
        // closing session
        SEclose(&conn);
        return -1;
    }

    // execute XQuery query	
    res = SEexecute(&conn, "doc(\"region\")/*/*");
    if(res != SEDNA_QUERY_SUCCEEDED) 
    {
        printf("Query failed: \n%s\n", SEgetLastErrorMsg(&conn));
        //closing session
        SEclose(&conn);
        return -1;
    }
 
    // iterate over the result sequence and retrieve the result data
    while((res = SEnext(&conn)) != SEDNA_RESULT_END)
    {
        if (res == SEDNA_ERROR)
        {
            printf("Failed to get next result item from server: \n%s\n", SEgetLastErrorMsg(&conn));
            //closing session
            SEclose(&conn);
            return -1;
        }

        printf("\nresult item:\n");
        do
        {
            bytes_read = SEgetData(&conn, buf, 1024 - 1);
            if(bytes_read == SEDNA_ERROR)
            {
                printf("Failed to get result data from server: \n%s\n", SEgetLastErrorMsg(&conn));
                //closing session
                SEclose(&conn);
                return -1;
            }
           	buf[bytes_read] = '\0';
         	printf("%s", buf);

        }while(bytes_read > 0);
    	printf("\n");
    }

    // Drop document "region"
    res = SEexecute(&conn, "DROP DOCUMENT \"region\""); 
    if(res != SEDNA_UPDATE_SUCCEEDED) 
    {
        printf("Drop document failed: \n%s\n", SEgetLastErrorMsg(&conn));
        // closing session
        SEclose(&conn);
        return -1;
    }

    //commiting transaction
    res = SEcommit(&conn);
    if(res != SEDNA_COMMIT_TRANSACTION_SUCCEEDED) 
    {
        printf("Commit transaction failed: \n%s\n", SEgetLastErrorMsg(&conn));
        //closing session
        SEclose(&conn);
        return -1;
    }
	
    //closing session
    res = SEclose(&conn);
    if(res != SEDNA_SESSION_CLOSED) 
    {
        printf("An error occured while trying to close session: \n%s\n", SEgetLastErrorMsg(&conn));
        return -1;
    }
    
    return 0;
}