1 files changed, 30 insertions, 0 deletions
diff --git a/ql/ast/nodes/expressions/binary_operators/greater_than_operator.py b/ql/ast/nodes/expressions/binary_operators/greater_than_operator.py
new file mode 100644
index 0000000..460c909
--- /dev/null
+++ b/ql/ast/nodes/expressions/binary_operators/greater_than_operator.py
@@ -0,0 +1,30 @@
+from ql.ast.nodes.expressions.binary_operators.binary_operator import BinaryOperatorNode
+from ql.types.boolean import QLBoolean
+from ql.types.date import QLDate
+from ql.types.decimal import QLDecimal
+from ql.types.integer import QLInteger
+from ql.types.money import QLMoney
+from ql.types.undefined import QLUndefined
+
+
+class GreaterThanOperatorNode(BinaryOperatorNode):
+    def __init__(self, metadata, expression_type, left_expression, right_expression, value):
+        super(GreaterThanOperatorNode, self).__init__(metadata, expression_type,
+                                                      left_expression, right_expression, value)
+        self.__valid_types = [
+            (QLDate,    QLDate),
+            (QLDecimal, QLDecimal),
+            (QLDecimal, QLInteger),
+            (QLInteger, QLInteger),
+            (QLInteger, QLDecimal),
+            (QLMoney,   QLMoney),
+        ]
+
+    def get_result_type(self):
+        if (self.left_expression.expression_type, self.right_expression.expression_type) in self.__valid_types:
+            return QLBoolean
+
+        return QLUndefined
+
+    def evaluate(self):
+        self.value = self.left_expression.value > self.right_expression.value