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Improvements to exchange rate dialog.

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Use a price on the same day as the transaction as default if there is one.
Don't add a new price to the price DB if the nearest one on the same day
is equivalent to the one being added.

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@22646 57a11ea4-9604-0410-9ed3-97b8803252fd
This commit is contained in:
Mike Alexander
2012-12-13 05:13:49 +00:00
parent 6ed3bfa6a3
commit 8d32361ede
3 changed files with 173 additions and 132 deletions
Download Patch File Download Diff File Expand all files Collapse all files

133
src/engine/gnc-pricedb.c
View File

@@ -34,6 +34,9 @@ static QofLogModule log_module = GNC_MOD_PRICE;
static gboolean add_price(GNCPriceDB *db, GNCPrice *p);
static gboolean remove_price(GNCPriceDB *db, GNCPrice *p, gboolean cleanup);
static GNCPrice *lookup_nearest_in_time(GNCPriceDB *db, const gnc_commodity *c,
const gnc_commodity *currency,
Timespec t, gboolean sameday);
enum
{
@@ -1519,65 +1522,13 @@ gnc_pricedb_get_prices(GNCPriceDB *db,
}
PriceList *
GNCPrice *
gnc_pricedb_lookup_day(GNCPriceDB *db,
const gnc_commodity *c,
const gnc_commodity *currency,
Timespec t)
{
GList *price_list;
GList *result = NULL;
GList *item = NULL;
GHashTable *currency_hash;
QofBook *book;
QofBackend *be;
if (!db || !c || !currency) return NULL;
ENTER ("db=%p commodity=%p currency=%p", db, c, currency);
book = qof_instance_get_book(&db->inst);
be = qof_book_get_backend(book);
/* Convert to noon local time. */
t = timespecCanonicalDayTime(t);
#ifdef GNUCASH_MAJOR_VERSION
if (be && be->price_lookup)
{
GNCPriceLookup pl;
pl.type = LOOKUP_AT_TIME;
pl.prdb = db;
pl.commodity = c;
pl.currency = currency;
pl.date = t;
(be->price_lookup) (be, &pl);
}
#endif
currency_hash = g_hash_table_lookup(db->commodity_hash, c);
if (!currency_hash)
{
LEAVE (" no currency hash");
return NULL;
}
price_list = g_hash_table_lookup(currency_hash, currency);
if (!price_list)
{
LEAVE (" no price list");
return NULL;
}
item = price_list;
while (item)
{
GNCPrice *p = item->data;
Timespec price_time = timespecCanonicalDayTime(gnc_price_get_time(p));
if (timespec_equal(&price_time, &t))
{
result = g_list_prepend(result, p);
gnc_price_ref(p);
}
item = item->next;
}
LEAVE (" ");
return result;
return lookup_nearest_in_time(db, c, currency, t, TRUE);
}
#if 0 /* Not Used */
@@ -1687,11 +1638,12 @@ lookup_time(gpointer key, gpointer val, gpointer user_data)
}
}
#endif
GNCPrice *
gnc_pricedb_lookup_nearest_in_time(GNCPriceDB *db,
const gnc_commodity *c,
const gnc_commodity *currency,
Timespec t)
static GNCPrice *
lookup_nearest_in_time(GNCPriceDB *db,
const gnc_commodity *c,
const gnc_commodity *currency,
Timespec t,
gboolean sameday)
{
GList *price_list;
GNCPrice *current_price = NULL;
@@ -1752,14 +1704,27 @@ gnc_pricedb_lookup_nearest_in_time(GNCPriceDB *db,
item = item->next;
}
if (current_price)
if (current_price) /* How can this be null??? */
{
if (!next_price)
{
/* It's earlier than the last price on the list */
result = current_price;
if (sameday)
{
/* Must be on the same day. */
Timespec price_day;
Timespec t_day;
price_day = timespecCanonicalDayTime(gnc_price_get_time(current_price));
t_day = timespecCanonicalDayTime(t);
if (!timespec_equal(&price_day, &t_day))
result = NULL;
}
}
else
{
/* If the requested time is not earlier than the first price on the
list, then current_price and next_price will be the same. */
Timespec current_t = gnc_price_get_time(current_price);
Timespec next_t = gnc_price_get_time(next_price);
Timespec diff_current = timespec_diff(&current_t, &t);
@@ -1767,16 +1732,43 @@ gnc_pricedb_lookup_nearest_in_time(GNCPriceDB *db,
Timespec abs_current = timespec_abs(&diff_current);
Timespec abs_next = timespec_abs(&diff_next);
/* Choose the price that is closest to the given time. In case of
* a tie, prefer the older price since it actually existed at the
* time. (This also fixes bug #541970.) */
if (timespec_cmp(&abs_current, &abs_next) < 0)
if (sameday)
{
result = current_price;
/* Result must be on same day, see if either of the two isn't */
Timespec t_day = timespecCanonicalDayTime(t);
Timespec current_day = timespecCanonicalDayTime(current_t);
Timespec next_day = timespecCanonicalDayTime(next_t);
if (timespec_equal(&current_day, &t_day))
{
if (timespec_equal(&next_day, &t_day))
{
/* Both on same day, return nearest */
if (timespec_cmp(&abs_current, &abs_next) < 0)
result = current_price;
else
result = next_price;
}
else
/* current_price on same day, next_price not */
result = current_price;
}
else if (timespec_equal(&next_day, &t_day))
/* next_price on same day, current_price not */
result = next_price;
}
else
{
result = next_price;
/* Choose the price that is closest to the given time. In case of
* a tie, prefer the older price since it actually existed at the
* time. (This also fixes bug #541970.) */
if (timespec_cmp(&abs_current, &abs_next) < 0)
{
result = current_price;
}
else
{
result = next_price;
}
}
}
}
@@ -1786,6 +1778,15 @@ gnc_pricedb_lookup_nearest_in_time(GNCPriceDB *db,
return result;
}
GNCPrice *
gnc_pricedb_lookup_nearest_in_time(GNCPriceDB *db,
const gnc_commodity *c,
const gnc_commodity *currency,
Timespec t)
{
return lookup_nearest_in_time(db, c, currency, t, FALSE);
}
GNCPrice *
gnc_pricedb_lookup_latest_before (GNCPriceDB *db,
gnc_commodity *c,

14
src/engine/gnc-pricedb.h
View File

@@ -346,13 +346,13 @@ PriceList * gnc_pricedb_lookup_at_time(GNCPriceDB *db,
const gnc_commodity *currency,
Timespec t);
/** gnc_pricedb_lookup_day - return all prices that match the given
commodity, currency, and timespec. Prices will be returned as a
GNCPrice list (see above). */
PriceList * gnc_pricedb_lookup_day(GNCPriceDB *db,
const gnc_commodity *commodity,
const gnc_commodity *currency,
Timespec t);
/** gnc_pricedb_lookup_day - return the price that matchex the given
commodity, currency, and timespec which is on the same day.
If no prices are on that day, returns a null value. */
GNCPrice * gnc_pricedb_lookup_day(GNCPriceDB *db,
const gnc_commodity *commodity,
const gnc_commodity *currency,
Timespec t);
/** gnc_pricedb_lookup_nearest_in_time - return the price for the given

158
src/gnome-utils/dialog-transfer.c
View File

@@ -198,6 +198,7 @@ gnc_xfer_dialog_update_price (XferDialog *xferData)
Timespec date;
gnc_commodity *from = xferData->from_commodity;
gnc_commodity *to = xferData->to_commodity;
gboolean reverse;
if (!xferData) return;
if (!xferData->from_commodity || ! xferData->to_commodity) return;
@@ -209,30 +210,52 @@ gnc_xfer_dialog_update_price (XferDialog *xferData)
/* XXX: I'm ALWAYS going to update whenever we get called */
/* grab the price nearest to the DATE out of the pricedb */
/* grab the price on the same day or nearest to the DATE out of the pricedb */
date = gnc_date_edit_get_date_ts (GNC_DATE_EDIT (xferData->date_entry));
prc = gnc_pricedb_lookup_nearest_in_time (xferData->pricedb,
from, to, date);
if (prc)
/* Look for a price on the same day or, failing that, closest in time. */
prc = gnc_pricedb_lookup_day (xferData->pricedb, from, to, date);
reverse = FALSE;
if (!prc)
{
/* grab the price from the pricedb */
price = gnc_price_get_value (prc);
PINFO("Found price: 1 %s = %f %s", gnc_commodity_get_mnemonic(from),
gnc_numeric_to_double(price), gnc_commodity_get_mnemonic(to));
/* Look for reverse price on same day */
prc = gnc_pricedb_lookup_day (xferData->pricedb, to, from, date);
reverse = TRUE;
}
else
if (!prc)
{
/* Didn't find one on the same day, look for nearest in time */
prc = gnc_pricedb_lookup_nearest_in_time (xferData->pricedb, from,
to, date);
reverse = FALSE;
}
if (!prc)
{
prc = gnc_pricedb_lookup_nearest_in_time (xferData->pricedb, to,
from, date);
reverse = TRUE;
}
if (!prc)
return;
/* grab the price from the pricedb */
price = gnc_price_get_value (prc);
if (reverse)
{
prc = gnc_pricedb_lookup_nearest_in_time (xferData->pricedb,
to, from, date);
if (!prc)
return;
price = gnc_price_get_value (prc);
PINFO("Found reverse price: 1 %s = %f %s", gnc_commodity_get_mnemonic(to),
gnc_numeric_to_double(price), gnc_commodity_get_mnemonic(from));
price = gnc_numeric_div (gnc_numeric_create (1, 1), price,
GNC_DENOM_AUTO, GNC_HOW_DENOM_REDUCE);
}
else
{
PINFO("Found price: 1 %s = %f %s", gnc_commodity_get_mnemonic(from),
gnc_numeric_to_double(price), gnc_commodity_get_mnemonic(to));
}
/* and set the price entry */
gnc_amount_edit_set_amount (GNC_AMOUNT_EDIT (xferData->price_edit), price);
@@ -1519,59 +1542,75 @@ gnc_xfer_dialog_response_cb (GtkDialog *dialog, gint response, gpointer data)
!(gnc_is_euro_currency (from) && gnc_is_euro_currency (to)))
{
GNCPrice *price;
GList *prices;
gnc_numeric value;
gnc_commodity *tmp;
/* First see if an entry exists at time ts */
prices = gnc_pricedb_lookup_at_time (xferData->pricedb, from, to, ts);
if (prices)
/* compute the price -- maybe we need to swap? */
value = gnc_xfer_dialog_compute_price(xferData);
value = gnc_numeric_abs (value);
/* Try to be consistent about how quotes are installed. */
if (from == gnc_default_currency())
{
PINFO("Found price for %s in %s", gnc_commodity_get_mnemonic(from),
gnc_commodity_get_mnemonic(to));
tmp = from;
from = to;
to = tmp;
value = gnc_numeric_div (gnc_numeric_create(1, 1), value,
GNC_DENOM_AUTO, GNC_HOW_DENOM_REDUCE);
}
else if ((to != gnc_default_currency()) &&
(strcmp (gnc_commodity_get_mnemonic(from),
gnc_commodity_get_mnemonic(to)) < 0))
{
tmp = from;
from = to;
to = tmp;
value = gnc_numeric_div (gnc_numeric_create(1, 1), value,
GNC_DENOM_AUTO, GNC_HOW_DENOM_REDUCE);
}
/* First see if the closest entry on the same day has an equivalent rate */
price = gnc_pricedb_lookup_day (xferData->pricedb, from, to, ts);
if (price)
{
gnc_numeric price_value = gnc_price_get_value(price);
if (!gnc_numeric_same (value, price_value,
MIN(gnc_numeric_denom(value),
gnc_numeric_denom(price_value)),
GNC_HOW_RND_ROUND_HALF_UP))
{
gnc_price_unref (price);
price = NULL;
}
if (price)
PINFO("Found price for %s in %s", gnc_commodity_get_mnemonic(from),
gnc_commodity_get_mnemonic(to));
}
else
{
prices = gnc_pricedb_lookup_at_time (xferData->pricedb, to, from, ts);
if (prices)
price = gnc_pricedb_lookup_day (xferData->pricedb, to, from, ts);
if (price)
{
PINFO("Found reverse price for %s in %s", gnc_commodity_get_mnemonic(to),
gnc_commodity_get_mnemonic(from));
gnc_numeric price_value = gnc_numeric_div (gnc_numeric_create(1, 1),
gnc_price_get_value(price),
GNC_DENOM_AUTO, GNC_HOW_DENOM_REDUCE);
if (!gnc_numeric_same (value, price_value,
MIN(gnc_numeric_denom(value),
gnc_numeric_denom(price_value)),
GNC_HOW_RND_ROUND_HALF_UP))
{
gnc_price_unref (price);
price = NULL;
}
if (price)
PINFO("Found reverse price for %s in %s", gnc_commodity_get_mnemonic(to),
gnc_commodity_get_mnemonic(from));
}
}
/* If so, do nothing (well, destroy the list). if not, create one. */
if (prices)
if (!price)
{
gnc_price_list_destroy (prices);
}
else
{
gnc_commodity *tmp;
gnc_numeric value;
/* compute the price -- maybe we need to swap? */
value = gnc_xfer_dialog_compute_price(xferData);
value = gnc_numeric_abs (value);
/* Try to be consistent about how quotes are installed. */
if (from == gnc_default_currency())
{
tmp = from;
from = to;
to = tmp;
value = gnc_numeric_div (gnc_numeric_create(1, 1), value,
GNC_DENOM_AUTO, GNC_HOW_DENOM_REDUCE);
}
else if ((to != gnc_default_currency()) &&
(strcmp (gnc_commodity_get_mnemonic(from),
gnc_commodity_get_mnemonic(to)) < 0))
{
tmp = from;
from = to;
to = tmp;
value = gnc_numeric_div (gnc_numeric_create(1, 1), value,
GNC_DENOM_AUTO, GNC_HOW_DENOM_REDUCE);
}
price = gnc_price_create (xferData->book);
gnc_price_begin_edit (price);
gnc_price_set_commodity (price, from);
@@ -1581,10 +1620,11 @@ gnc_xfer_dialog_response_cb (GtkDialog *dialog, gint response, gpointer data)
gnc_price_set_value (price, value);
gnc_pricedb_add_price (xferData->pricedb, price);
gnc_price_commit_edit (price);
gnc_price_unref (price);
PINFO("Created price: 1 %s = %f %s", gnc_commodity_get_mnemonic(from),
gnc_numeric_to_double(value), gnc_commodity_get_mnemonic(to));
}
gnc_price_unref (price);
}
}