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* Improve indexing to realize a massive scanner speed improvement with very large music libraries -- especially with compilations.

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This commit is contained in:
Justin Maggard 2009-04-17 10:15:28 +00:00
parent 223df2111b
commit 68f7448c0c
1 changed files with 16 additions and 11 deletions
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27
scanner.c
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@ -82,11 +82,12 @@ get_next_available_id(const char * table, const char * parentID)
int ret, rows;
sqlite_int64 objectID = 0;
asprintf(&sql, "SELECT OBJECT_ID, max(ID) from %s where PARENT_ID = '%s'", table, parentID);
asprintf(&sql, "SELECT OBJECT_ID from %s where ID = "
"(SELECT max(ID) from %s where PARENT_ID = '%s')", table, table, parentID);
ret = sql_get_table(db, sql, &result, &rows, NULL);
if( result[2] )
if( rows )
{
objectID = strtoll(rindex(result[2], '$')+1, NULL, 16) + 1;
objectID = strtoll(strrchr(result[1], '$')+1, NULL, 16) + 1;
}
sqlite3_free_table(result);
free(sql);
@ -105,7 +106,11 @@ insert_container(const char * item, const char * rootParent, const char * refID,
int parentID = 0, objectID = 0;
sqlite_int64 detailID = 0;
sql = sqlite3_mprintf("SELECT OBJECT_ID from OBJECTS where OBJECT_ID glob '%s$*' and NAME = '%q'", rootParent, item);
sql = sqlite3_mprintf("SELECT OBJECT_ID from OBJECTS"
" where PARENT_ID = '%s'"
" and NAME = '%q'"
" and CLASS = 'container.%s' limit 1",
rootParent, item, class);
ret = sql_get_table(db, sql, &result, &rows, &cols);
sqlite3_free(sql);
if( cols )
@ -622,7 +627,7 @@ CreateDatabase(void)
ret = sql_exec(db, "CREATE TABLE OBJECTS ( "
"ID INTEGER PRIMARY KEY AUTOINCREMENT, "
"OBJECT_ID TEXT NOT NULL, "
"OBJECT_ID TEXT UNIQUE NOT NULL, "
"PARENT_ID TEXT NOT NULL, "
"REF_ID TEXT DEFAULT NULL, "
"CLASS TEXT NOT NULL, "
@ -687,7 +692,7 @@ CreateDatabase(void)
sql_exec(db, "create INDEX IDX_DETAILS_PATH ON DETAILS(PATH);");
sql_exec(db, "create INDEX IDX_DETAILS_ID ON DETAILS(ID);");
sql_exec(db, "create INDEX IDX_ALBUM_ART ON ALBUM_ART(ID);");
sql_exec(db, "create INDEX IDX_SCANNER_OPT ON OBJECTS(PARENT_ID, NAME, OBJECT_ID);");
sql_failed:
if( ret != SQLITE_OK )
@ -811,11 +816,6 @@ ScanDirectory(const char * dir, const char * parent, enum media_types type)
}
else
{
#ifdef READYNAS
if( access("/ramfs/.rescan_done", F_OK) == 0 )
system("/bin/sh /ramfs/.rescan_done");
unlink("/ramfs/.upnp-av_scan");
#endif
DPRINTF(E_WARN, L_SCANNER, "Scanning %s finished (%llu files)!\n", dir, fileno);
}
}
@ -837,6 +837,11 @@ start_scanner()
}
freopen("/proc/self/fd/2", "a", stderr);
scanning = 0;
#ifdef READYNAS
if( access("/ramfs/.rescan_done", F_OK) == 0 )
system("/bin/sh /ramfs/.rescan_done");
unlink("/ramfs/.upnp-av_scan");
#endif
return 0;
}