[tracker/wip/carlosg/sparql1.1: 50/56] libtracker-data: Implement TZ sparql function
- From: Carlos Garnacho <carlosg src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [tracker/wip/carlosg/sparql1.1: 50/56] libtracker-data: Implement TZ sparql function
- Date: Thu, 6 Jun 2019 11:20:22 +0000 (UTC)
commit 15c0f3d80e1c9403c83c061b59f6f6dfb2eb5ff2
Author: Carlos Garnacho <carlosg gnome org>
Date: Tue Jun 4 12:30:01 2019 +0200
libtracker-data: Implement TZ sparql function
src/libtracker-data/tracker-db-interface-sqlite.c | 40 +++++++++++++++++++++++
src/libtracker-data/tracker-sparql.c | 8 ++++-
2 files changed, 47 insertions(+), 1 deletion(-)
---
diff --git a/src/libtracker-data/tracker-db-interface-sqlite.c
b/src/libtracker-data/tracker-db-interface-sqlite.c
index 8c244c3d1..84216e2b3 100644
--- a/src/libtracker-data/tracker-db-interface-sqlite.c
+++ b/src/libtracker-data/tracker-db-interface-sqlite.c
@@ -559,6 +559,44 @@ function_sparql_time_zone_duration (sqlite3_context *context,
}
}
+static void
+function_sparql_time_zone_substr (sqlite3_context *context,
+ int argc,
+ sqlite3_value *argv[])
+{
+ if (argc != 1) {
+ sqlite3_result_error (context, "Invalid argument count", -1);
+ return;
+ }
+
+ if (sqlite3_value_type (argv[0]) == SQLITE_NULL) {
+ sqlite3_result_null (context);
+ return;
+ } else if (sqlite3_value_numeric_type (argv[0]) == SQLITE_INTEGER) {
+ sqlite3_result_text (context, "", -1, NULL);
+ } else if (sqlite3_value_type (argv[0]) == SQLITE_TEXT) {
+ const gchar *str;
+ gint len;
+
+ str = sqlite3_value_text (argv[0]);
+ len = strlen (str);
+
+ if (g_str_has_suffix (str, "Z")) {
+ sqlite3_result_text (context, "Z", -1, NULL);
+ } else {
+ const gchar *tz;
+
+ tz = &str[len - 5];
+ if (tz[0] != '+' && tz[0] != '-')
+ tz = "";
+
+ sqlite3_result_text (context, g_strdup (tz), -1, g_free);
+ }
+ } else {
+ sqlite3_result_error (context, "Invalid argument type", -1);
+ }
+}
+
static void
function_sparql_cartesian_distance (sqlite3_context *context,
int argc,
@@ -1570,6 +1608,8 @@ initialize_functions (TrackerDBInterface *db_interface)
function_sparql_time_sort },
{ "SparqlTimezoneDuration", 1, SQLITE_ANY | SQLITE_DETERMINISTIC,
function_sparql_time_zone_duration },
+ { "SparqlTimezoneString", 1, SQLITE_ANY | SQLITE_DETERMINISTIC,
+ function_sparql_time_zone_substr },
/* Paths and filenames */
{ "SparqlStringFromFilename", 1, SQLITE_ANY | SQLITE_DETERMINISTIC,
function_sparql_string_from_filename },
diff --git a/src/libtracker-data/tracker-sparql.c b/src/libtracker-data/tracker-sparql.c
index 181631b0f..6b976b6f3 100644
--- a/src/libtracker-data/tracker-sparql.c
+++ b/src/libtracker-data/tracker-sparql.c
@@ -5937,7 +5937,13 @@ translate_BuiltInCall (TrackerSparql *sparql,
} else if (_accept (sparql, RULE_TYPE_LITERAL, LITERAL_TIMEZONE)) {
_unimplemented ("TIMEZONE");
} else if (_accept (sparql, RULE_TYPE_LITERAL, LITERAL_TZ)) {
- _unimplemented ("TZ");
+ sparql->current_state.convert_to_string = TRUE;
+ _expect (sparql, RULE_TYPE_LITERAL, LITERAL_OPEN_PARENS);
+ _append_string (sparql, "SparqlTimezoneString (");
+ _call_rule (sparql, NAMED_RULE_Expression, error);
+ _expect (sparql, RULE_TYPE_LITERAL, LITERAL_CLOSE_PARENS);
+ _append_string (sparql, ") ");
+ sparql->current_state.expression_type = TRACKER_PROPERTY_TYPE_STRING;
} else if (_accept (sparql, RULE_TYPE_LITERAL, LITERAL_MD5)) {
sparql->current_state.convert_to_string = TRUE;
_expect (sparql, RULE_TYPE_LITERAL, LITERAL_OPEN_PARENS);
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