ADD conditional function hasValue as alternative to notNull

Author: francerz

README.md

@@ -263,6 +263,7 @@ prefixes the `and` and `or` logical operators for clarity.
 | `NOT BETWEEN` | `notBetween($op, $min, $max)` | `andNotBetween($op, $min, $max)` | `orNotBetween($op, $min, $max)` |
 | `IN`          | `in($op, $array)`             | `andIn($op, $array)`             | `orIn($op, $array)`             |
 | `NOT IN`      | `notIn($op, $array)`          | `andNotIn($op, $array)`          | `orNotIn($op, $array)`          |
+| `IS NOT NULL` | `hasValue($op)`               | `andHasValue($op)`               | `orHasValue($op)`               |
 
 > **About `ConditionList` class**
 >

src/Expressions/Logical/ConditionList.php

@@ -352,6 +352,7 @@ public function null($value, $negated = false, $connector = LogicConnectors::AND
     {
         return $this->add(new ConditionItem($this->genNullExpression($value, $negated), $connector));
     }
+    #endregion
 
     #region NULL with connector and negation
     public function notNull($value)
@@ -376,6 +377,19 @@ public function orNotNull($value)
     }
     #endregion
 
+    #region HasValue (NOT NULL but better negation readability)
+    public function hasValue($value, $negated = false, $connector = LogicConnectors::AND)
+    {
+        return $this->null($value, !$negated, $connector);
+    }
+    public function andHasValue($value)
+    {
+        return $this->hasValue($value);
+    }
+    public function orHasValue($value)
+    {
+        return $this->hasValue($value, false, LogicConnectors::OR);
+    }
     #endregion
 
     #region Equals OR NULL