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Improve Database: Replace Empty Strings with NULL Values

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Enhance data consistency by updating the database to treat empty
strings as NULL values. This change simplifies queries and improves
overall database integrity.
This commit is contained in:
John Hernandez 2023-11-06 18:20:39 +01:00
parent d89b5a04fa
commit 89dc7a46f1
1 changed files with 27 additions and 16 deletions
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43
src/database.c
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@ -284,8 +284,8 @@ log_database_get_limits_info(const gchar* const contact_barejid, gboolean is_las
const char* order = is_last ? "DESC" : "ASC";
auto_sqlite char* query = sqlite3_mprintf("SELECT `archive_id`, `timestamp` FROM `ChatLogs` WHERE "
"(`from_jid` = '%q' AND `to_jid` = '%q') OR "
"(`from_jid` = '%q' AND `to_jid` = '%q') "
"(`from_jid` = %Q AND `to_jid` = %Q) OR "
"(`from_jid` = %Q AND `to_jid` = %Q) "
"ORDER BY `timestamp` %s LIMIT 1;",
contact_barejid, myjid->barejid, myjid->barejid, contact_barejid, order);
@ -335,9 +335,9 @@ log_database_get_previous_chat(const gchar* const contact_barejid, const char* s
"SELECT COALESCE(B.`message`, A.`message`) AS message, "
"A.`timestamp`, A.`from_jid`, A.`to_jid`, A.`type`, A.`encryption` FROM `ChatLogs` AS A "
"LEFT JOIN `ChatLogs` AS B ON (A.`replaced_by_db_id` = B.`id` AND A.`from_jid` = B.`from_jid`) "
"WHERE (A.`replaces_db_id` IS NULL OR A.`replaces_db_id` = '') "
"AND ((A.`from_jid` = '%q' AND A.`to_jid` = '%q') OR (A.`from_jid` = '%q' AND A.`to_jid` = '%q')) "
"AND A.`timestamp` < '%q' "
"WHERE (A.`replaces_db_id` IS NULL) "
"AND ((A.`from_jid` = %Q AND A.`to_jid` = %Q) OR (A.`from_jid` = %Q AND A.`to_jid` = %Q)) "
"AND A.`timestamp` < %Q "
"AND (%Q IS NULL OR A.`timestamp` > %Q) "
"ORDER BY A.`timestamp` %s LIMIT %d) "
"ORDER BY `timestamp` %s;",
@ -523,7 +523,7 @@ _add_to_db(ProfMessage* message, char* type, const Jid* const from_jid, const Ji
// stanza-id (XEP-0359) doesn't have to be present in the message.
// But if it's duplicated, it's a serious server-side problem, so we better track it.
if (message->stanzaid) {
auto_sqlite char* duplicate_check_query = sqlite3_mprintf("SELECT 1 FROM `ChatLogs` WHERE (`archive_id` = '%q')",
auto_sqlite char* duplicate_check_query = sqlite3_mprintf("SELECT 1 FROM `ChatLogs` WHERE (`archive_id` = %Q)",
message->stanzaid);
if (!duplicate_check_query) {
@ -550,17 +550,17 @@ _add_to_db(ProfMessage* message, char* type, const Jid* const from_jid, const Ji
"`replaces_db_id`, `replace_id`, `type`, `encryption`) "
"VALUES (%Q, %Q, %Q, %Q, %Q, %Q, %Q, %Q, %Q, %Q, %Q, %Q)",
from_jid->barejid,
from_jid->resourcepart ? from_jid->resourcepart : "",
from_jid->resourcepart,
to_jid->barejid,
to_jid->resourcepart ? to_jid->resourcepart : "",
message->plain ? message->plain : "",
date_fmt ? date_fmt : "",
message->id ? message->id : "",
message->stanzaid ? message->stanzaid : "",
to_jid->resourcepart,
message->plain,
date_fmt,
message->id,
message->stanzaid,
orig_message_id,
message->replace_id ? message->replace_id : "",
type ? type : "",
enc ? enc : "");
message->replace_id,
type,
enc);
if (!query) {
log_error("Could not allocate memory for SQL insert query in log_database_add()");
return;
@ -611,6 +611,7 @@ _migrate_to_v2(void)
{
char* err_msg = NULL;
// from_resource, to_resource, message, timestamp, stanza_id, archive_id, replace_id, type, encryption
const char* sql_statements[] = {
"BEGIN TRANSACTION",
"ALTER TABLE `ChatLogs` ADD COLUMN `replaces_db_id` INTEGER;",
@ -627,7 +628,17 @@ _migrate_to_v2(void)
"WHERE (A.`replace_id` IS NULL OR A.`replace_id` = '') "
"AND A.`id` = B.`replaces_db_id` "
"AND A.`from_jid` = B.`from_jid`;",
"UPDATE `DbVersion` SET `version` = 2",
"UPDATE ChatLogs SET "
"from_resource = COALESCE(NULLIF(from_resource, ''), NULL), "
"to_resource = COALESCE(NULLIF(to_resource, ''), NULL), "
"message = COALESCE(NULLIF(message, ''), NULL), "
"timestamp = COALESCE(NULLIF(timestamp, ''), NULL), "
"stanza_id = COALESCE(NULLIF(stanza_id, ''), NULL), "
"archive_id = COALESCE(NULLIF(archive_id, ''), NULL), "
"replace_id = COALESCE(NULLIF(replace_id, ''), NULL), "
"type = COALESCE(NULLIF(type, ''), NULL), "
"encryption = COALESCE(NULLIF(encryption, ''), NULL);",
"UPDATE `DbVersion` SET `version` = 2;",
"END TRANSACTION"
};