used QLatin1String() for some operators

Author: silverqx

src/orm/query/grammars/postgresgrammar.cpp

@@ -85,10 +85,10 @@ const QVector<QString> &PostgresGrammar::getOperators() const
 {
     static const QVector<QString> cachedOperators {
         EQ, LT, GT, LE, GE, NE, NE_,
-        LIKE, NLIKE, "between", ILIKE, "not ilike",
+        LIKE, NLIKE, QLatin1String("between"), ILIKE, QLatin1String("not ilike"),
         "~", B_AND, B_OR, "#", "<<", ">>", "<<=", ">>=",
-        AND_, "@>", "<@", "?", "?|", "?&", OR_, "-", "@?", "@@", "#-",
-        "is distinct from", "is not distinct from",
+        AND_, "@>", "<@", "?", "?|", "?&", OR_, MINUS, "@?", "@@", "#-",
+        QLatin1String("is distinct from"), QLatin1String("is not distinct from"),
     };
 
     return cachedOperators;

src/orm/query/grammars/sqlitegrammar.cpp

@@ -77,7 +77,7 @@ const QVector<QString> &SQLiteGrammar::getOperators() const
     static const QVector<QString> cachedOperators {
         EQ, LT, GT, LE, GE, NE_, NE,
         LIKE, NLIKE, ILIKE,
-        B_AND, B_OR, "<<", ">>",
+        B_AND, B_OR, QLatin1String("<<"), QLatin1String(">>"),
     };
 
     return cachedOperators;

src/orm/query/querybuilder.cpp

@@ -1735,12 +1735,13 @@ void Builder::checkBindingType(const BindingType type) const
 const QVector<QString> &Builder::getOperators()
 {
     static const QVector<QString> cachedOperators {
-        EQ, LT, GT, LE, GE, NE_, NE, "<=>",
-        LIKE, "like binary", NLIKE, ILIKE,
+        EQ, LT, GT, LE, GE, NE_, NE, QLatin1String("<=>"),
+        LIKE, QLatin1String("like binary"), NLIKE, ILIKE,
         B_AND, B_OR, "^", "<<", ">>", "&~",
-        "rlike", "not rlike", "regexp", "not regexp",
-        "~", "~*", "!~", "!~*", "similar to",
-        "not similar to", "not ilike", "~~*", "!~~*",
+        QLatin1String("rlike"),  QLatin1String("not rlike"),
+        QLatin1String("regexp"), QLatin1String("not regexp"),
+        "~", "~*", "!~", "!~*", QLatin1String("similar to"),
+        QLatin1String("not similar to"), QLatin1String("not ilike"), "~~*", "!~~*",
     };
 
     return cachedOperators;