[evolution-data-server/openismus-work-master: 6/73] EBookBackendSqliteDB: Adding cursor APIs
- From: Tristan Van Berkom <tvb src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [evolution-data-server/openismus-work-master: 6/73] EBookBackendSqliteDB: Adding cursor APIs
- Date: Thu, 4 Jul 2013 19:15:40 +0000 (UTC)
commit f122bb63b4e12b95486207c916416daf247a6677
Author: Tristan Van Berkom <tristanvb openismus com>
Date: Mon Apr 22 20:42:14 2013 +0900
EBookBackendSqliteDB: Adding cursor APIs
Added the following APIs:
o e_book_backend_sqlitedb_cursor_new()
Creates a cursor for a given query expression and sort order
o e_book_backend_sqlitedb_cursor_free()
Frees a cursor and it's resources
o e_book_backend_sqlitedb_cursor_move_by()
Moves the cursor and fetches results
o e_book_backend_sqlitedb_cursor_set_target()
Sets the cursor state to a given position in the results
o e_book_backend_sqlite_cursor_calculate()
Calculates the position / total values of a cursor.
o e_book_backend_sqlitedb_cursor_set_sexp()
Sets the search expression for a given cursor
Also restored DB overwrite when country code changes.
.../libebook-contacts/e-book-contacts-types.h | 12 +
.../libedata-book/e-book-backend-sqlitedb.c | 1124 +++++++++++++++++++-
.../libedata-book/e-book-backend-sqlitedb.h | 51 +
3 files changed, 1146 insertions(+), 41 deletions(-)
---
diff --git a/addressbook/libebook-contacts/e-book-contacts-types.h
b/addressbook/libebook-contacts/e-book-contacts-types.h
index 7208b67..964f57e 100644
--- a/addressbook/libebook-contacts/e-book-contacts-types.h
+++ b/addressbook/libebook-contacts/e-book-contacts-types.h
@@ -135,6 +135,18 @@ typedef enum {
E_BOOK_INDEX_PHONE
} EBookIndexType;
+/**
+ * EBookSortType:
+ * @E_BOOK_SORT_ASCENDING: Sort results in ascending order
+ * @E_BOOK_SORT_ASCENDING: Sort results in descending order
+ *
+ * Specifies the sort order of an ordered query
+ */
+typedef enum {
+ E_BOOK_SORT_ASCENDING = 0,
+ E_BOOK_SORT_DESCENDING
+} EBookSortType;
+
GQuark e_book_client_error_quark (void) G_GNUC_CONST;
const gchar * e_book_client_error_to_string (EBookClientError code);
diff --git a/addressbook/libedata-book/e-book-backend-sqlitedb.c
b/addressbook/libedata-book/e-book-backend-sqlitedb.c
index 64e2c0a..24f960f 100644
--- a/addressbook/libedata-book/e-book-backend-sqlitedb.c
+++ b/addressbook/libedata-book/e-book-backend-sqlitedb.c
@@ -59,7 +59,7 @@
#endif
#define DB_FILENAME "contacts.db"
-#define FOLDER_VERSION 6
+#define FOLDER_VERSION 7
typedef enum {
INDEX_PREFIX = (1 << 0),
@@ -123,6 +123,12 @@ static EBookIndexType default_index_types[] = {
E_BOOK_INDEX_PREFIX
};
+static void
+destroy_search_data (gpointer data)
+{
+ e_book_backend_sqlitedb_search_data_free (data);
+}
+
static SummaryField * append_summary_field (GArray *array,
EContactField field,
gboolean *have_attr_list,
@@ -130,6 +136,7 @@ static SummaryField * append_summary_field (GArray *array,
static gboolean upgrade_contacts_table (EBookBackendSqliteDB *ebsdb,
const gchar *folderid,
+ const gchar *region,
GError **error);
static const gchar *
@@ -473,6 +480,30 @@ collect_versions_cb (gpointer ref,
return 0;
}
+typedef struct {
+ gboolean has_countrycode;
+ gboolean has_lc_collate;
+} LocaleColumns;
+
+static gint
+find_locale_columns (gpointer data,
+ gint n_cols,
+ gchar **cols,
+ gchar **name)
+{
+ LocaleColumns *columns = (LocaleColumns *)data;
+ gint i;
+
+ for (i = 0; i < n_cols; i++) {
+ if (g_strcmp0 (cols[i], "countrycode") == 0)
+ columns->has_countrycode = TRUE;
+ else if (g_strcmp0 (cols[i], "lc_collate") == 0)
+ columns->has_lc_collate = TRUE;
+ }
+
+ return 0;
+}
+
static gboolean
create_folders_table (EBookBackendSqliteDB *ebsdb,
gint *previous_schema,
@@ -480,6 +511,7 @@ create_folders_table (EBookBackendSqliteDB *ebsdb,
{
gboolean success;
gint version = 0;
+ LocaleColumns locale_columns = { FALSE, FALSE };
/* sync_data points to syncronization data, it could be last_modified
* time or a sequence number or some text depending on the backend.
@@ -561,7 +593,7 @@ create_folders_table (EBookBackendSqliteDB *ebsdb,
* create_contacts_table() as we need introspection details for doing
* that.
*/
- if (version >= 3 && version < 5) {
+ if (version >= 3 && version < FOLDER_VERSION) {
stmt = "UPDATE folders SET "
"multivalues = REPLACE(RTRIM(REPLACE("
"multivalues || ':', ':', "
@@ -593,6 +625,36 @@ create_folders_table (EBookBackendSqliteDB *ebsdb,
if (!success)
goto rollback;
+ /* Adding countrycode column again to track the addressbook's country code.
+ * Detecting presence of this column by reflection instead of assigning a
+ * dedicated schema version number, because upstream is not going to accept
+ * a locale bound addressbook database. See discussion in bug 689622.
+ */
+ stmt = "PRAGMA table_info(folders)";
+ success = book_backend_sql_exec (
+ ebsdb->priv->db, stmt, find_locale_columns, &locale_columns, error);
+
+ if (!success)
+ goto rollback;
+
+ if (!locale_columns.has_countrycode) {
+ stmt = "ALTER TABLE folders ADD COLUMN countrycode VARCHAR(2)";
+ success = book_backend_sql_exec (ebsdb->priv->db, stmt, NULL, NULL, error);
+
+ if (!success)
+ goto rollback;
+
+ }
+
+ if (!locale_columns.has_lc_collate) {
+ stmt = "ALTER TABLE folders ADD COLUMN lc_collate TEXT";
+ success = book_backend_sql_exec (ebsdb->priv->db, stmt, NULL, NULL, error);
+
+ if (!success)
+ goto rollback;
+ }
+
+ /* Remember the schema version for later use and finish the transaction. */
*previous_schema = version;
return book_backend_sqlitedb_commit_transaction (ebsdb, error);
@@ -709,7 +771,7 @@ get_count_cb (gpointer ref,
gint i;
for (i = 0; i < n_cols; i++) {
- if (g_strcmp0 (name[i], "count(*)") == 0) {
+ if (name[i] && strncmp (name[i], "count", 5) == 0) {
count = g_ascii_strtoll (cols[i], NULL, 10);
}
}
@@ -769,6 +831,10 @@ introspect_summary (EBookBackendSqliteDB *ebsdb,
gchar *p;
IndexFlags computed = 0;
+ /* Ignore the 'localized' columns */
+ if (g_str_has_suffix (col, "_localized"))
+ continue;
+
/* Check if we're parsing a reverse field */
if ((p = strstr (col, "_reverse")) != NULL) {
computed = INDEX_SUFFIX;
@@ -889,11 +955,20 @@ create_contacts_table (EBookBackendSqliteDB *ebsdb,
gchar *stmt, *tmp;
GString *string;
gboolean already_exists = FALSE;
+ gboolean relocalized = FALSE;
+ gchar *current_region = NULL;
success = check_folderid_exists (ebsdb, folderid, &already_exists, error);
if (!success)
return FALSE;
+ if (e_phone_number_is_supported ()) {
+ current_region = e_phone_number_get_default_region (error);
+
+ if (current_region == NULL)
+ return FALSE;
+ }
+
string = g_string_new (
"CREATE TABLE IF NOT EXISTS %Q ( uid TEXT PRIMARY KEY, ");
@@ -901,6 +976,15 @@ create_contacts_table (EBookBackendSqliteDB *ebsdb,
if (ebsdb->priv->summary_fields[i].type == G_TYPE_STRING) {
g_string_append (string, ebsdb->priv->summary_fields[i].dbname);
g_string_append (string, " TEXT, ");
+
+ /* For any string columns (not multivalued columns), also create a localized
+ * data column for sort ordering
+ */
+ if (ebsdb->priv->summary_fields[i].field != E_CONTACT_REV) {
+ g_string_append (string, ebsdb->priv->summary_fields[i].dbname);
+ g_string_append (string, "_localized TEXT, ");
+ }
+
} else if (ebsdb->priv->summary_fields[i].type == G_TYPE_BOOLEAN) {
g_string_append (string, ebsdb->priv->summary_fields[i].dbname);
g_string_append (string, " INTEGER, ");
@@ -930,6 +1014,29 @@ create_contacts_table (EBookBackendSqliteDB *ebsdb,
sqlite3_free (stmt);
+ /* Now, if we're upgrading from < version 7, we need to add the _localized columns */
+ if (success && previous_schema >= 1 && previous_schema < 7) {
+
+ tmp = sqlite3_mprintf ("ALTER TABLE %Q ADD COLUMN ", folderid);
+
+ for (i = 1; i < ebsdb->priv->n_summary_fields && success; i++) {
+
+ if (ebsdb->priv->summary_fields[i].type == G_TYPE_STRING &&
+ ebsdb->priv->summary_fields[i].field != E_CONTACT_REV) {
+ string = g_string_new (tmp);
+
+ g_string_append (string, ebsdb->priv->summary_fields[i].dbname);
+ g_string_append (string, "_localized TEXT, ");
+
+ success = book_backend_sql_exec (
+ ebsdb->priv->db, string->str, NULL, NULL , error);
+
+ g_string_free (string, TRUE);
+ }
+ }
+ sqlite3_free (tmp);
+ }
+
/* Construct the create statement from the attribute list summary table */
if (success && ebsdb->priv->have_attr_list) {
string = g_string_new ("CREATE TABLE IF NOT EXISTS %Q ( uid TEXT NOT NULL REFERENCES %Q(uid),
"
@@ -995,6 +1102,20 @@ create_contacts_table (EBookBackendSqliteDB *ebsdb,
success = book_backend_sql_exec (ebsdb->priv->db, stmt, NULL, NULL, error);
sqlite3_free (stmt);
g_free (tmp);
+
+ /* For any indexed column, also index the localized column */
+ if (ebsdb->priv->summary_fields[i].field != E_CONTACT_REV) {
+ tmp = g_strdup_printf (
+ "INDEX_%s_localized_%s",
+ summary_dbname_from_field (ebsdb,
ebsdb->priv->summary_fields[i].field),
+ folderid);
+ stmt = sqlite3_mprintf (
+ "CREATE INDEX IF NOT EXISTS %Q ON %Q (%s_localized)", tmp, folderid,
+ summary_dbname_from_field (ebsdb,
ebsdb->priv->summary_fields[i].field));
+ success = book_backend_sql_exec (ebsdb->priv->db, stmt, NULL, NULL, error);
+ sqlite3_free (stmt);
+ g_free (tmp);
+ }
}
if (success &&
@@ -1029,9 +1150,47 @@ create_contacts_table (EBookBackendSqliteDB *ebsdb,
}
}
- /* Until version 6, the whole contacts table requires a re-normalization of the data */
- if (success && previous_schema < 6)
- success = upgrade_contacts_table (ebsdb, folderid, error);
+ /* Need to relocalize the whole thing if the schema has been upgraded to version 7 */
+ if (success && previous_schema >= 1 && previous_schema < 7) {
+ success = upgrade_contacts_table (ebsdb, folderid, current_region, error);
+ relocalized = TRUE;
+ }
+
+ /* We may need to relocalize for a country code change */
+ if (success && relocalized == FALSE && e_phone_number_is_supported ()) {
+ gchar *stored_region = NULL;
+
+ stmt = sqlite3_mprintf ("SELECT countrycode FROM folders WHERE folder_id = %Q", folderid);
+ success = book_backend_sql_exec (ebsdb->priv->db, stmt, get_string_cb, &stored_region, error);
+ sqlite3_free (stmt);
+
+ if (success && g_strcmp0 (current_region, stored_region) != 0) {
+ success = upgrade_contacts_table (ebsdb, folderid, current_region, error);
+ relocalized = TRUE;
+ }
+
+ g_free (stored_region);
+ }
+
+ /* We may need to relocalize for an LC_COLLATE locale change */
+ if (success && relocalized == FALSE) {
+ const gchar *lc_collate = NULL;
+ gchar *stored_lc_collate;
+
+ stmt = sqlite3_mprintf ("SELECT lc_collate FROM folders WHERE folder_id = %Q", folderid);
+ success = book_backend_sql_exec (ebsdb->priv->db, stmt, get_string_cb, &stored_lc_collate,
error);
+ sqlite3_free (stmt);
+
+ lc_collate = setlocale (LC_COLLATE, NULL);
+
+ if (success && g_strcmp0 (stored_lc_collate, lc_collate) != 0) {
+ success = upgrade_contacts_table (ebsdb, folderid, current_region, error);
+ relocalized = TRUE;
+ }
+
+ g_free (stored_lc_collate);
+ }
+ g_free (current_region);
return success;
}
@@ -1839,32 +1998,90 @@ insert_stmt_from_contact (EBookBackendSqliteDB *ebsdb,
gint i;
str = sqlite3_mprintf (
- "INSERT or %s INTO %Q VALUES (",
+ "INSERT or %s INTO %Q (",
replace_existing ? "REPLACE" : "FAIL", folderid);
string = g_string_new (str);
sqlite3_free (str);
+ /*
+ * First specify the column names for the insert, since it's possible we
+ * upgraded the DB and cannot be sure the order of the columns are ordered
+ * just how we like them to be.
+ */
+ for (i = 0; i < ebsdb->priv->n_summary_fields; i++) {
+
+ /* Multi values go into a separate table/statement */
+ if (ebsdb->priv->summary_fields[i].type != E_TYPE_CONTACT_ATTR_LIST) {
+
+ if (i > 0)
+ g_string_append (string, ", ");
+
+ g_string_append (string, ebsdb->priv->summary_fields[i].dbname);
+ }
+
+ if (ebsdb->priv->summary_fields[i].type == G_TYPE_STRING) {
+
+ if (ebsdb->priv->summary_fields[i].field != E_CONTACT_UID &&
+ ebsdb->priv->summary_fields[i].field != E_CONTACT_REV) {
+ g_string_append (string, ", ");
+ g_string_append (string, ebsdb->priv->summary_fields[i].dbname);
+ g_string_append (string, "_localized");
+ }
+
+ if ((ebsdb->priv->summary_fields[i].index & INDEX_SUFFIX) != 0) {
+ g_string_append (string, ", ");
+ g_string_append (string, ebsdb->priv->summary_fields[i].dbname);
+ g_string_append (string, "_reverse");
+ }
+
+ if ((ebsdb->priv->summary_fields[i].index & INDEX_PHONE) != 0) {
+ g_string_append (string, ", ");
+ g_string_append (string, ebsdb->priv->summary_fields[i].dbname);
+ g_string_append (string, "_phone");
+ }
+ }
+ }
+ g_string_append (string, ", vcard, bdata)");
+
+ /*
+ * Now specify values for all of the column names we specified.
+ */
+ g_string_append (string, " VALUES (");
for (i = 0; i < ebsdb->priv->n_summary_fields; i++) {
if (ebsdb->priv->summary_fields[i].type == G_TYPE_STRING) {
gchar *val;
gchar *normal;
+ gchar *localized = NULL;
if (i > 0)
g_string_append (string, ", ");
val = e_contact_get (contact, ebsdb->priv->summary_fields[i].field);
- /* Special exception, never normalize the UID or REV string */
+ /* Special exception, never normalize/localize the UID or REV string */
if (ebsdb->priv->summary_fields[i].field != E_CONTACT_UID &&
- ebsdb->priv->summary_fields[i].field != E_CONTACT_REV)
+ ebsdb->priv->summary_fields[i].field != E_CONTACT_REV) {
normal = e_util_utf8_normalize (val);
- else
+
+ if (val)
+ localized = g_utf8_collate_key (val, strlen (val));
+ else
+ localized = g_strdup ("");
+ } else
normal = g_strdup (val);
str = sqlite3_mprintf ("%Q", normal);
g_string_append (string, str);
sqlite3_free (str);
+ if (ebsdb->priv->summary_fields[i].field != E_CONTACT_UID &&
+ ebsdb->priv->summary_fields[i].field != E_CONTACT_REV) {
+ str = sqlite3_mprintf ("%Q", localized);
+ g_string_append (string, ", ");
+ g_string_append (string, str);
+ sqlite3_free (str);
+ }
+
if ((ebsdb->priv->summary_fields[i].index & INDEX_SUFFIX) != 0) {
str = mprintf_suffix (normal);
g_string_append (string, ", ");
@@ -1881,6 +2098,7 @@ insert_stmt_from_contact (EBookBackendSqliteDB *ebsdb,
g_free (normal);
g_free (val);
+ g_free (localized);
} else if (ebsdb->priv->summary_fields[i].type == G_TYPE_BOOLEAN) {
gboolean val;
@@ -2668,9 +2886,7 @@ e_book_backend_sqlitedb_get_vcard_string (EBookBackendSqliteDB *ebsdb,
vcard_str = s_data->vcard;
s_data->vcard = NULL;
- e_book_backend_sqlitedb_search_data_free (s_data);
-
- g_slist_free (vcards);
+ g_slist_free_full (vcards, destroy_search_data);
vcards = NULL;
}
@@ -4729,22 +4945,17 @@ e_book_backend_sqlitedb_remove (EBookBackendSqliteDB *ebsdb,
return TRUE;
}
-static void
-destroy_search_data (gpointer data)
-{
- e_book_backend_sqlitedb_search_data_free (data);
-}
-
static gboolean
-upgrade_contacts_table (EBookBackendSqliteDB *ebsdb,
- const gchar *folderid,
- GError **error)
+upgrade_contacts_table (EBookBackendSqliteDB *ebsdb,
+ const gchar *folderid,
+ const gchar *region,
+ GError **error)
{
gchar *stmt;
+ const gchar *lc_collate;
gboolean success = FALSE;
GSList *vcard_data = NULL;
GSList *l;
- gchar *default_region = NULL;
stmt = sqlite3_mprintf ("SELECT uid, vcard, NULL FROM %Q", folderid);
success = book_backend_sql_exec (
@@ -4754,38 +4965,869 @@ upgrade_contacts_table (EBookBackendSqliteDB *ebsdb,
if (vcard_data == NULL)
return TRUE;
- if (e_phone_number_is_supported ()) {
- default_region = e_phone_number_get_default_region (error);
+ for (l = vcard_data; success && l; l = l->next) {
+ EbSdbSearchData *const s_data = l->data;
+ EContact *contact = e_contact_new_from_vcard_with_uid (s_data->vcard, s_data->uid);
- if (default_region == NULL)
- success = FALSE;
+ if (contact == NULL)
+ continue;
+
+ success = insert_contact (ebsdb, contact, folderid, TRUE, region, error);
+
+ g_object_unref (contact);
}
- success = book_backend_sqlitedb_start_transaction (ebsdb, error);
+ g_slist_free_full (vcard_data, destroy_search_data);
if (success) {
+ lc_collate = setlocale (LC_COLLATE, NULL);
- for (l = vcard_data; success && l; l = l->next) {
- EbSdbSearchData *const s_data = l->data;
- EContact *contact = e_contact_new_from_vcard_with_uid (s_data->vcard, s_data->uid);
+ stmt = sqlite3_mprintf (
+ "UPDATE folders SET countrycode = %Q WHERE folder_id = %Q",
+ region, folderid);
+ success = book_backend_sql_exec (
+ ebsdb->priv->db, stmt, NULL, NULL, error);
+ sqlite3_free (stmt);
- if (contact == NULL)
- continue;
+ stmt = sqlite3_mprintf (
+ "UPDATE folders SET lc_collate = %Q WHERE folder_id = %Q",
+ lc_collate, folderid);
+ success = book_backend_sql_exec (
+ ebsdb->priv->db, stmt, NULL, NULL, error);
+ sqlite3_free (stmt);
+ }
+
+ return success;
+}
+
+/******************************************************************
+ * EbSdbCursor apis *
+ ******************************************************************/
+struct _EbSdbCursor {
+ gchar *folderid; /* The folderid for this cursor */
+
+ gchar *select_vcards; /* The first fragment when querying results */
+ gchar *select_count; /* The first fragment when querying contact counts */
+ gchar *query; /* The SQL query expression derived from the passed search expression */
+ gchar *order; /* The normal order SQL query fragment to append at the end, containing
ORDER BY etc */
+ gchar *reverse_order; /* The reverse order SQL query fragment to append at the end,
containing ORDER BY etc */
+
+ EContactField *sort_fields; /* The fields to sort in a query in the order or sort priority */
+ EBookSortType *sort_types; /* The sort method to use for each field */
+ gchar **values; /* The current cursor position, results will be returned after this
position */
+
+ gint n_sort_fields; /* The amound of sort fields */
+
+ gchar *last_uid; /* The current cursor contact UID position, used as a tie breaker */
+};
+
+static void
+ebsdb_cursor_setup_query (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ const gchar *sexp,
+ gboolean query_with_list_attrs)
+{
+ gchar *stmt;
+ gchar *count_stmt;
+
+ g_free (cursor->select_vcards);
+ g_free (cursor->select_count);
+ g_free (cursor->query);
+
+ if (query_with_list_attrs) {
+ gchar *list_table = g_strconcat (cursor->folderid, "_lists", NULL);
+
+ stmt = sqlite3_mprintf ("SELECT DISTINCT summary.uid, vcard, bdata FROM %Q AS summary "
+ "LEFT OUTER JOIN %Q AS multi ON summary.uid = multi.uid",
+ cursor->folderid, list_table);
+
+ count_stmt = sqlite3_mprintf ("SELECT count(DISTINCT summary.uid), vcard, bdata FROM %Q AS
summary "
+ "LEFT OUTER JOIN %Q AS multi ON summary.uid = multi.uid",
+ cursor->folderid, list_table);
+ g_free (list_table);
+ } else {
+ stmt = sqlite3_mprintf ("SELECT uid, vcard, bdata FROM %Q AS summary", cursor->folderid);
+ count_stmt = sqlite3_mprintf ("SELECT count(*) FROM %Q AS summary", cursor->folderid);
+ }
+
+ cursor->select_vcards = g_strdup (stmt);
+ cursor->select_count = g_strdup (count_stmt);
+ sqlite3_free (stmt);
+ sqlite3_free (count_stmt);
+
+ cursor->query = sexp ? sexp_to_sql_query (ebsdb, cursor->folderid, sexp) : NULL;
+}
+
+static gchar *
+ebsdb_cursor_order_by_fragment (EBookBackendSqliteDB *ebsdb,
+ EContactField *sort_fields,
+ EBookSortType *sort_types,
+ guint n_sort_fields,
+ gboolean reverse)
+{
+ GString *string;
+ const gchar *field_name;
+ gint i;
+
+ string = g_string_new ("ORDER BY ");
+
+ for (i = 0; i < n_sort_fields; i++) {
+
+ field_name = summary_dbname_from_field (ebsdb, sort_fields[i]);
+
+ if (i > 0)
+ g_string_append (string, ", ");
+
+ g_string_append_printf (string, "summary.%s_localized %s", field_name,
+ reverse ?
+ (sort_types[i] == E_BOOK_SORT_ASCENDING ? "DESC" : "ASC") :
+ (sort_types[i] == E_BOOK_SORT_ASCENDING ? "ASC" : "DESC"));
+ }
+
+ return g_string_free (string, FALSE);
+}
+
+static EbSdbCursor *
+ebsdb_cursor_new (EBookBackendSqliteDB *ebsdb,
+ const gchar *folderid,
+ const gchar *sexp,
+ gboolean query_with_list_attrs,
+ EContactField *sort_fields,
+ EBookSortType *sort_types,
+ guint n_sort_fields)
+{
+ EbSdbCursor *cursor = g_slice_new0 (EbSdbCursor);
+
+ cursor->folderid = g_strdup (folderid);
+
+ /* Setup the initial query fragments */
+ ebsdb_cursor_setup_query (ebsdb, cursor, sexp, query_with_list_attrs);
+
+ cursor->order = ebsdb_cursor_order_by_fragment (ebsdb,
+ sort_fields,
+ sort_types,
+ n_sort_fields,
+ FALSE);
+ cursor->reverse_order = ebsdb_cursor_order_by_fragment (ebsdb,
+ sort_fields,
+ sort_types,
+ n_sort_fields,
+ TRUE);
+
+ cursor->n_sort_fields = n_sort_fields;
+ cursor->sort_fields = g_memdup (sort_fields, sizeof (EContactField) * n_sort_fields);
+ cursor->sort_types = g_memdup (sort_types, sizeof (EBookSortType) * n_sort_fields);
+ cursor->values = g_new0 (gchar *, n_sort_fields);
+
+ return cursor;
+}
+
+static void
+ebsdb_cursor_clear_state (EbSdbCursor *cursor)
+{
+ gint i;
+
+ for (i = 0; i < cursor->n_sort_fields; i++) {
+ g_free (cursor->values[i]);
+ cursor->values[i] = NULL;
+ }
+
+ g_free (cursor->last_uid);
+ cursor->last_uid = NULL;
+}
+
+static void
+ebsdb_cursor_free (EbSdbCursor *cursor)
+{
+ if (cursor) {
+ ebsdb_cursor_clear_state (cursor);
+
+ g_free (cursor->folderid);
+ g_free (cursor->select_vcards);
+ g_free (cursor->select_count);
+ g_free (cursor->query);
+ g_free (cursor->order);
+ g_free (cursor->reverse_order);
+ g_free (cursor->sort_fields);
+ g_free (cursor->sort_types);
+ g_free (cursor->values);
+
+ g_slice_free (EbSdbCursor, cursor);
+ }
+}
+
+static void
+ebsdb_cursor_set_state_from_contact (EbSdbCursor *cursor,
+ EContact *contact)
+{
+ gint i;
+
+ ebsdb_cursor_clear_state (cursor);
+
+ for (i = 0; i < cursor->n_sort_fields; i++) {
+ const gchar *string = e_contact_get_const (contact, cursor->sort_fields[i]);
+
+ if (string)
+ cursor->values[i] = g_utf8_collate_key (string, -1);
+ else
+ cursor->values[i] = g_strdup ("");
+ }
+
+ cursor->last_uid = e_contact_get (contact, E_CONTACT_UID);
+}
+
+static void
+ebsdb_cursor_set_state (EbSdbCursor *cursor,
+ const gchar *vcard)
+{
+ EContact *contact;
+
+ if (vcard) {
+ contact = e_contact_new_from_vcard (vcard);
+ ebsdb_cursor_set_state_from_contact (cursor, contact);
+ g_object_unref (contact);
+ } else {
+ ebsdb_cursor_clear_state (cursor);
+ }
+}
+
+#define GREATER_OR_LESS(cursor, index, reverse) \
+ (reverse ? \
+ (((EbSdbCursor *)cursor)->sort_types[index == E_BOOK_SORT_ASCENDING] ? '>' : '<') : \
+ (((EbSdbCursor *)cursor)->sort_types[index == E_BOOK_SORT_ASCENDING] ? '<' : '>'))
+
+static gchar *
+ebsdb_cursor_constraints (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ gboolean reverse,
+ gboolean include_current_uid)
+{
+ GString *string;
+ const gchar *field_name;
+ gint i, j;
+
+ /* Example for:
+ * ORDER BY family_name ASC, given_name DESC
+ *
+ * Where current cursor values are:
+ * family_name = Jackson
+ * given_name = Micheal
+ *
+ * With reverse = FALSE
+ *
+ * (summary.family_name > 'Jackson') OR
+ * (summary.family_name = 'Jackson' AND summary.given_name < 'Micheal') OR
+ * (summary.family_name = 'Jackson' AND summary.given_name = 'Micheal' AND summary.uid >
'last-uid')
+ *
+ * With reverse = TRUE (needed for moving the cursor backwards through results)
+ *
+ * (summary.family_name < 'Jackson') OR
+ * (summary.family_name = 'Jackson' AND summary.given_name > 'Micheal') OR
+ * (summary.family_name = 'Jackson' AND summary.given_name = 'Micheal' AND summary.uid <
'last-uid')
+ *
+ */
+
+ string = g_string_new (NULL);
+
+ for (i = 0; i < (cursor->n_sort_fields + 1); i++) {
+ gchar *stmt;
+
+ /* Break once we hit a NULL value */
+ if ((i < cursor->n_sort_fields && cursor->values[i] == NULL) ||
+ (i == cursor->n_sort_fields && cursor->last_uid == NULL))
+ break;
+
+ /* Between each qualifier, add an 'OR' */
+ if (i > 0)
+ g_string_append (string, " OR ");
+
+ /* Begin qualifier */
+ g_string_append_c (string, '(');
+
+ /* Create the '=' statements leading up to the current tie breaker */
+ for (j = 0; j < i; j++) {
+ field_name = summary_dbname_from_field (ebsdb, cursor->sort_fields[j]);
+
+ stmt = sqlite3_mprintf ("summary.%s_localized = %Q",
+ field_name, cursor->values[j]);
+
+ g_string_append (string, stmt);
+ g_string_append (string, " AND ");
+
+ sqlite3_free (stmt);
- success = insert_contact (ebsdb, contact, folderid, TRUE, default_region, error);
+ }
+
+ if (i == cursor->n_sort_fields) {
+
+ /* The 'include_current_uid' clause is used for calculating
+ * the current position of the cursor, inclusive of the
+ * current position.
+ */
+ if (include_current_uid)
+ g_string_append_c (string, '(');
+
+ /* Append the UID tie breaker */
+ stmt = sqlite3_mprintf ("summary.uid %c %Q",
+ reverse ? '<' : '>',
+ cursor->last_uid);
+ g_string_append (string, stmt);
+ sqlite3_free (stmt);
+
+ if (include_current_uid) {
+ stmt = sqlite3_mprintf (" OR summary.uid = %Q",
+ cursor->last_uid);
+ g_string_append (string, stmt);
+ g_string_append_c (string, ')');
+ sqlite3_free (stmt);
+ }
- g_object_unref (contact);
+ } else {
+
+ /* SPECIAL CASE: If we have a parially set cursor state, then we must
+ * report next results that are inclusive of the final qualifier.
+ *
+ * This allows one to set the cursor with the family name set to 'J'
+ * and include the results for contact's Mr & Miss 'J'.
+ */
+ gboolean include_exact_match =
+ (reverse == FALSE &&
+ ((i + 1 < cursor->n_sort_fields && cursor->values[i + 1] == NULL) ||
+ (i + 1 == cursor->n_sort_fields && cursor->last_uid == NULL)));
+
+ if (include_exact_match)
+ g_string_append_c (string, '(');
+
+ /* Append the final qualifier for this field */
+ field_name = summary_dbname_from_field (ebsdb, cursor->sort_fields[i]);
+
+ stmt = sqlite3_mprintf ("summary.%s_localized %c %Q",
+ field_name,
+ GREATER_OR_LESS (cursor, i, reverse),
+ cursor->values[i]);
+
+ g_string_append (string, stmt);
+ sqlite3_free (stmt);
+
+ if (include_exact_match) {
+
+ stmt = sqlite3_mprintf (" OR summary.%s_localized = %Q",
+ field_name, cursor->values[i]);
+
+ g_string_append (string, stmt);
+ g_string_append_c (string, ')');
+ sqlite3_free (stmt);
+ }
}
- if (success)
- success = book_backend_sqlitedb_commit_transaction (ebsdb, error);
+ /* End qualifier */
+ g_string_append_c (string, ')');
+ }
+
+ return g_string_free (string, FALSE);
+}
+
+static gboolean
+cursor_count_total_locked (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ gint *total,
+ GError **error)
+{
+ GString *query;
+ gboolean success;
+
+ query = g_string_new (cursor->select_count);
+
+ /* Add the filter constraints (if any) */
+ if (cursor->query) {
+ g_string_append (query, " WHERE ");
+
+ g_string_append_c (query, '(');
+ g_string_append (query, cursor->query);
+ g_string_append_c (query, ')');
+ }
+
+ /* Execute the query */
+ success = book_backend_sql_exec (ebsdb->priv->db, query->str,
+ get_count_cb, total, error);
+
+ g_string_free (query, TRUE);
+
+ return success;
+}
+
+static gboolean
+cursor_count_position_locked (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ gint *position,
+ GError **error)
+{
+ GString *query;
+ gboolean success;
+
+ query = g_string_new (cursor->select_count);
+
+ /* Add the filter constraints (if any) */
+ if (cursor->query) {
+ g_string_append (query, " WHERE ");
+
+ g_string_append_c (query, '(');
+ g_string_append (query, cursor->query);
+ g_string_append_c (query, ')');
+ }
+
+ /* Add the cursor constraints (if any) */
+ if (cursor->values[0] != NULL) {
+ gchar *constraints = NULL;
+
+ if (!cursor->query)
+ g_string_append (query, " WHERE ");
else
- /* The GError is already set. */
- book_backend_sqlitedb_rollback_transaction (ebsdb, NULL);
+ g_string_append (query, " AND ");
+
+ /* Here we do a reverse query, we're looking for all the
+ * results leading up to the current cursor value, including
+ * the cursor value
+ */
+ constraints = ebsdb_cursor_constraints (ebsdb, cursor, TRUE, TRUE);
+
+ g_string_append_c (query, '(');
+ g_string_append (query, constraints);
+ g_string_append_c (query, ')');
+
+ g_free (constraints);
}
- g_slist_free_full (vcard_data, destroy_search_data);
- g_free (default_region);
+ /* Execute the query */
+ success = book_backend_sql_exec (ebsdb->priv->db, query->str,
+ get_count_cb, position, error);
+
+ g_string_free (query, TRUE);
+
+ return success;
+}
+
+/**
+ * e_book_backend_sqlitedb_cursor_new:
+ * @ebsdb: An #EBookBackendSqliteDB
+ * @folderid: folder id of the address-book
+ * @sexp: search expression; use NULL or an empty string to get all stored contacts.
+ * @sort_fields: (array length=n_sort_fields): An array of #EContactFields as sort keys in order of priority
+ * @sort_types: (array length=n_sort_fields): An array of #EBookSortTypes, one for each field in @sort_fields
+ * @n_sort_fields: The number of fields to sort results by.
+ * @error: A return location to story any error that might be reported.
+ *
+ * Creates a new #EbSdbCursor.
+ *
+ * The cursor should be freed with e_book_backend_sqlitedb_cursor_free().
+ *
+ * Returns: (transfer full): A newly created #EbSdbCursor
+ *
+ * Since: 3.10
+ */
+EbSdbCursor *
+e_book_backend_sqlitedb_cursor_new (EBookBackendSqliteDB *ebsdb,
+ const gchar *folderid,
+ const gchar *sexp,
+ EContactField *sort_fields,
+ EBookSortType *sort_types,
+ guint n_sort_fields,
+ GError **error)
+{
+ gboolean query_with_list_attrs = FALSE;
+ gint i;
+
+ g_return_val_if_fail (E_IS_BOOK_BACKEND_SQLITEDB (ebsdb), NULL);
+ g_return_val_if_fail (folderid && folderid[0], NULL);
+
+ /* We only support cursors for summary fields in the query */
+ if (sexp && !e_book_backend_sqlitedb_check_summary_query (ebsdb, sexp, &query_with_list_attrs)) {
+ g_set_error (error, E_BOOK_SDB_ERROR, E_BOOK_SDB_ERROR_INVALID_QUERY,
+ _("Only summary queries are supported by EbSdbCursor"));
+ return NULL;
+ }
+
+ if (n_sort_fields == 0) {
+ g_set_error (error, E_BOOK_SDB_ERROR, E_BOOK_SDB_ERROR_INVALID_QUERY,
+ _("At least one sort field must be specified to use an EbSdbCursor"));
+ return NULL;
+ }
+
+ /* We only support summarized sort keys which are not multi value fields */
+ for (i = 0; i < n_sort_fields; i++) {
+
+ gint support;
+
+ support = func_check_field_test (ebsdb, e_contact_field_name (sort_fields[i]), NULL);
+
+ if ((support & CHECK_IS_SUMMARY) == 0) {
+ g_set_error (error, E_BOOK_SDB_ERROR, E_BOOK_SDB_ERROR_INVALID_QUERY,
+ _("Cannot sort by a field that is not in the summary"));
+ return NULL;
+ }
+
+ if ((support & CHECK_IS_LIST_ATTR) != 0) {
+ g_set_error (error, E_BOOK_SDB_ERROR, E_BOOK_SDB_ERROR_INVALID_QUERY,
+ _("Cannot sort by a field which may have multiple values"));
+ return NULL;
+ }
+ }
+
+ return ebsdb_cursor_new (ebsdb, folderid, sexp, query_with_list_attrs,
+ sort_fields, sort_types, n_sort_fields);
+}
+
+/**
+ * e_book_backend_sqlitedb_cursor_free:
+ * @ebsdb: An #EBookBackendSqliteDB
+ * @cursor: The #EbSdbCursor to free
+ *
+ * Frees @cursor.
+ *
+ * Since: 3.10
+ */
+void
+e_book_backend_sqlitedb_cursor_free (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor)
+{
+ g_return_if_fail (E_IS_BOOK_BACKEND_SQLITEDB (ebsdb));
+
+ ebsdb_cursor_free (cursor);
+}
+
+/**
+ * e_book_backend_sqlitedb_cursor_move_by:
+ * @ebsdb: An #EBookBackendSqliteDB
+ * @cursor: The #EbSdbCursor to use
+ * @count: A positive or negative amount of contacts to try and fetch
+ * @error: A return location to story any error that might be reported.
+ *
+ * Moves @cursor through the @ebsdb by @count and fetch a maximum of @count contacts.
+ *
+ * If @count is negative, then the cursor will move backwards.
+ *
+ * If @cursor is in an empty state, then @count contacts will be fetched
+ * from the beginning of the cursor's query results, or from the ending
+ * of the query results for a negative value of @count.
+ *
+ * If @cursor reaches the beginning or end of the query results, then the
+ * returned list might not contain the amount of desired contacts, or might
+ * return no results. This is not considered an error condition.
+ *
+ * Returns: (element-type EbSdbSearchData) (transfer full):
+ * A list of #EbSdbSearchData, the list should be freed with g_slist_free()
+ * and all elements freed with e_book_backend_sqlitedb_search_data_free().
+ *
+ * Since: 3.10
+ */
+GSList *
+e_book_backend_sqlitedb_cursor_move_by (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ gint count,
+ GError **error)
+{
+ GSList *results = NULL;
+ GString *query;
+ gboolean success;
+
+ g_return_val_if_fail (E_IS_BOOK_BACKEND_SQLITEDB (ebsdb), NULL);
+ g_return_val_if_fail (cursor != NULL, NULL);
+ g_return_val_if_fail (count != 0, NULL);
+
+ query = g_string_new (cursor->select_vcards);
+
+ /* Add the filter constraints (if any) */
+ if (cursor->query) {
+ g_string_append (query, " WHERE ");
+
+ g_string_append_c (query, '(');
+ g_string_append (query, cursor->query);
+ g_string_append_c (query, ')');
+ }
+
+ /* Add the cursor constraints (if any) */
+ if (cursor->values[0] != NULL) {
+ gchar *constraints = NULL;
+
+ if (!cursor->query)
+ g_string_append (query, " WHERE ");
+ else
+ g_string_append (query, " AND ");
+
+ constraints = ebsdb_cursor_constraints (ebsdb, cursor, count < 0, FALSE);
+
+ g_string_append_c (query, '(');
+ g_string_append (query, constraints);
+ g_string_append_c (query, ')');
+
+ g_free (constraints);
+ }
+
+ /* Add the sort order */
+ g_string_append_c (query, ' ');
+ if (count > 0)
+ g_string_append (query, cursor->order);
+ else
+ g_string_append (query, cursor->reverse_order);
+
+ /* Add the limit */
+ g_string_append_printf (query, " LIMIT %d", ABS (count));
+
+ /* Execute the query */
+ LOCK_MUTEX (&ebsdb->priv->lock);
+ success = book_backend_sql_exec (ebsdb->priv->db, query->str,
+ addto_vcard_list_cb , &results,
+ error);
+ UNLOCK_MUTEX (&ebsdb->priv->lock);
+
+ g_string_free (query, TRUE);
+
+ /* Correct the order of results, since
+ * addto_vcard_list_cb() prepends them (as it should)
+ */
+ results = g_slist_reverse (results);
+
+ /* If there was no error, update the internal cursor state */
+ if (success) {
+
+ if (g_slist_length (results) < ABS (count))
+ /* We've reached the end, clear the state */
+ ebsdb_cursor_clear_state (cursor);
+ else {
+ /* Set the cursor state to the last result */
+ GSList *last = g_slist_last (results);
+ EbSdbSearchData *data = last->data;
+
+ ebsdb_cursor_set_state (cursor, data->vcard);
+ }
+ }
+
+ return results;
+}
+
+/**
+ * e_book_backend_sqlitedb_cursor_set_targetv:
+ * @ebsdb: An #EBookBackendSqliteDB
+ * @cursor: The #EbSdbCursor to modify
+ * @values: (allow-none) (array length=n_values): An array of values to set the cursor position with
+ * @n_values: The length of the passed @values
+ *
+ * Set's the current cursor target position.
+ *
+ * The passed values set the relative @cursor position in it's result set
+ * with the passed @values. Each member of the passed @values represents
+ * a target position for it's corresponding sort field which the cursor
+ * was created for (See the @sort_fields argument of e_book_backend_sqlitedb_cursor_new()).
+ *
+ * The @values array passed to this function need not be as long as
+ * the array of @sort_fields originally passed to e_book_backend_sqlitedb_cursor_new().
+ * A shorter array of @values indicates that the cursor's target is set with
+ * less specificity.
+ *
+ * In addition to the @cursor's @sort_fields, a single extra value can
+ * be passed which is an %E_CONTACT_UID. If the uid is given as an additional
+ * value in @values, it will be used to specify exactly which contact the
+ * cursor should currently point to.
+ *
+ * Note that if the final %E_CONTACT_UID is not specified, then the cursor
+ * is said to be in an 'incomplete state' or a 'partial state'. If the cursor
+ * is in a partial state, then the next call to e_book_backend_sqlitedb_cursor_move_by()
+ * with a positive @count will include any exact matches for the given values.
+ *
+ * A %NULL value for @values resets the internal state of @cursor completely,
+ * so that any further calls to e_book_backend_sqlitedb_cursor_move_by() will
+ * report results from the beginning or ending of the @cursor's query.
+ *
+ * Since: 3.10
+ */
+void
+e_book_backend_sqlitedb_cursor_set_targetv (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ const gchar **values,
+ gint n_values)
+{
+ gint i;
+
+ g_return_if_fail (E_IS_BOOK_BACKEND_SQLITEDB (ebsdb));
+ g_return_if_fail (cursor != NULL);
+ g_return_if_fail (n_values <= cursor->n_sort_fields + 1);
+
+ ebsdb_cursor_clear_state (cursor);
+
+ for (i = 0; i < MIN (cursor->n_sort_fields, n_values); i++) {
+ cursor->values[i] = g_utf8_collate_key (values[i], -1);
+ }
+
+ if (n_values > cursor->n_sort_fields)
+ cursor->last_uid = g_strdup (values[n_values - 1]);
+}
+
+/**
+ * e_book_backend_sqlitedb_cursor_set_target:
+ * @ebsdb: An #EBookBackendSqliteDB
+ * @cursor: The #EbSdbCursor to modify
+ * @...: A null terminated list of values
+ *
+ * A convenience function for calling e_book_backend_sqlitedb_cursor_set_targetv().
+ *
+ * Since: 3.10
+ */
+void
+e_book_backend_sqlitedb_cursor_set_target (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ ...)
+{
+ GArray *array;
+ gchar *value = NULL;
+ va_list args;
+
+ g_return_if_fail (E_IS_BOOK_BACKEND_SQLITEDB (ebsdb));
+ g_return_if_fail (cursor != NULL);
+
+ array = g_array_new (FALSE, FALSE, sizeof (gchar *));
+
+ va_start (args, cursor);
+ value = va_arg (args, gchar*);
+ while (value) {
+ g_array_append_val (array, value);
+ value = va_arg (args, gchar*);
+ }
+ va_end (args);
+
+ e_book_backend_sqlitedb_cursor_set_targetv (ebsdb, cursor,
+ (const gchar **)array->data,
+ array->len);
+ g_array_free (array, TRUE);
+}
+
+/**
+ * e_book_backend_sqlitedb_cursor_set_target_contact:
+ * @ebsdb: An #EBookBackendSqliteDB
+ * @cursor: The #EbSdbCursor to modify
+ * @contact: (allow-none): An #EContact
+ *
+ * A convenience function for calling e_book_backend_sqlitedb_cursor_set_targetv(),
+ *
+ * This function will set the cursor values automatically from @contact.
+ *
+ * Since: 3.10
+ */
+void
+e_book_backend_sqlitedb_cursor_set_target_contact (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ EContact *contact)
+{
+ g_return_if_fail (E_IS_BOOK_BACKEND_SQLITEDB (ebsdb));
+ g_return_if_fail (contact == NULL || E_IS_CONTACT (contact));
+ g_return_if_fail (cursor != NULL);
+
+ if (contact)
+ ebsdb_cursor_set_state_from_contact (cursor, contact);
+ else
+ ebsdb_cursor_clear_state (cursor);
+}
+
+/**
+ * e_book_backend_sqlitedb_cursor_set_sexp:
+ * @ebsdb: An #EBookBackendSqliteDB
+ * @cursor: The #EbSdbCursor
+ * @sexp: The new query expression for @cursor
+ * @error: A return location to story any error that might be reported.
+ *
+ * Modifies the current query expression for @cursor. This will not
+ * modify @cursor's state, but will change the outcome of any further
+ * calls to e_book_backend_sqlitedb_cursor_calculate() or
+ * e_book_backend_sqlitedb_cursor_move_by().
+ *
+ * Returns: %TRUE if the expression was valid and accepted by @ebsdb
+ *
+ * Since: 3.10
+ */
+gboolean
+e_book_backend_sqlitedb_cursor_set_sexp (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ const gchar *sexp,
+ GError **error)
+{
+ gboolean query_with_list_attrs = FALSE;
+
+ g_return_val_if_fail (E_IS_BOOK_BACKEND_SQLITEDB (ebsdb), FALSE);
+ g_return_val_if_fail (cursor != NULL, FALSE);
+
+ /* We only support cursors for summary fields in the query */
+ if (sexp && !e_book_backend_sqlitedb_check_summary_query (ebsdb, sexp, &query_with_list_attrs)) {
+ g_set_error (error, E_BOOK_SDB_ERROR, E_BOOK_SDB_ERROR_INVALID_QUERY,
+ _("Only summary queries are supported by EbSdbCursor"));
+ return FALSE;
+ }
+
+ ebsdb_cursor_setup_query (ebsdb, cursor, sexp, query_with_list_attrs);
+
+ return TRUE;
+}
+
+/**
+ * e_book_backend_sqlitedb_cursor_calculate:
+ * @ebsdb: An #EBookBackendSqliteDB
+ * @cursor: The #EbSdbCursor
+ * @total: (out) (allow-none): A return location to store the total result set for this cursor
+ * @position: (out) (allow-none): A return location to store the total results before the cursor value
+ * @error: (allow-none): A return location to story any error that might be reported.
+ *
+ * Calculates the @total amount of results for the @cursor's query expression,
+ * as well as the current @position of @cursor in the results. @position is
+ * represented as the amount of results which lead up to the current value
+ * of @cursor, if @cursor currently points to an exact contact, the position
+ * also includes the cursor contact.
+ *
+ * Returns: Whether @total and @position were successfully calculated.
+ *
+ * Since: 3.10
+ */
+gboolean
+e_book_backend_sqlitedb_cursor_calculate (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ gint *total,
+ gint *position,
+ GError **error)
+{
+ gboolean success = TRUE;
+
+ g_return_val_if_fail (E_IS_BOOK_BACKEND_SQLITEDB (ebsdb), FALSE);
+ g_return_val_if_fail (cursor != NULL, FALSE);
+
+ /* If we're in a clear cursor state, then the position is 0 */
+ if (position && cursor->values[0] == NULL) {
+ *position = 0;
+
+ /* Mark the local pointer NULL, no need to calculate this anymore */
+ position = NULL;
+ }
+
+ /* Early return if there is nothing to do */
+ if (!total && !position)
+ return TRUE;
+
+ LOCK_MUTEX (&ebsdb->priv->lock);
+
+ if (!book_backend_sqlitedb_start_transaction (ebsdb, error)) {
+ UNLOCK_MUTEX (&ebsdb->priv->lock);
+ return FALSE;
+ }
+
+ if (total)
+ success = cursor_count_total_locked (ebsdb, cursor, total, error);
+
+ if (success && position)
+ success = cursor_count_position_locked (ebsdb, cursor, position, error);
+
+ if (success)
+ success = book_backend_sqlitedb_commit_transaction (ebsdb, error);
+ else
+ /* The GError is already set. */
+ book_backend_sqlitedb_rollback_transaction (ebsdb, NULL);
+
+ UNLOCK_MUTEX (&ebsdb->priv->lock);
return success;
}
diff --git a/addressbook/libedata-book/e-book-backend-sqlitedb.h
b/addressbook/libedata-book/e-book-backend-sqlitedb.h
index f6b3433..571aac0 100644
--- a/addressbook/libedata-book/e-book-backend-sqlitedb.h
+++ b/addressbook/libedata-book/e-book-backend-sqlitedb.h
@@ -112,6 +112,15 @@ typedef struct {
gchar *bdata;
} EbSdbSearchData;
+/**
+ * EbSdbCuror:
+ *
+ * An opaque cursor pointer
+ *
+ * Since: 3.10
+ */
+typedef struct _EbSdbCursor EbSdbCursor;
+
GType e_book_backend_sqlitedb_get_type
(void) G_GNUC_CONST;
GQuark e_book_backend_sqlitedb_error_quark
@@ -277,6 +286,48 @@ gboolean e_book_backend_sqlitedb_check_summary_fields
(EBookBackendSqliteDB *ebsdb,
GHashTable *fields_of_interest);
+/* Cursor API */
+EbSdbCursor *e_book_backend_sqlitedb_cursor_new
+ (EBookBackendSqliteDB *ebsdb,
+ const gchar *folderid,
+ const gchar *sexp,
+ EContactField *sort_fields,
+ EBookSortType *sort_types,
+ guint n_sort_fields,
+ GError **error);
+void e_book_backend_sqlitedb_cursor_free
+ (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor);
+GSList *e_book_backend_sqlitedb_cursor_move_by
+ (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ gint count,
+ GError **error);
+void e_book_backend_sqlitedb_cursor_set_targetv
+ (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ const gchar **values,
+ gint n_values);
+void e_book_backend_sqlitedb_cursor_set_target
+ (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ ...) G_GNUC_NULL_TERMINATED;
+void e_book_backend_sqlitedb_cursor_set_target_contact
+ (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ EContact *contact);
+gboolean e_book_backend_sqlitedb_cursor_set_sexp
+ (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ const gchar *sexp,
+ GError **error);
+gboolean e_book_backend_sqlitedb_cursor_calculate
+ (EBookBackendSqliteDB *ebsdb,
+ EbSdbCursor *cursor,
+ gint *total,
+ gint *position,
+ GError **error);
+
#ifndef EDS_DISABLE_DEPRECATED
gboolean e_book_backend_sqlitedb_is_summary_query
(const gchar *query);
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