Merge branch 'develop'

CHANGELOG.md

@@ -5,6 +5,13 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 
+## [0.2.0] - 2021-11-02
+
+### Added
+
+- added add_rule method to RuleParser
+
+
 ## [0.1.3] - 2021-06-15
 
 ### Fixed
@@ -74,6 +81,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 Initial release
 
 
+[0.2.0]: https://github.com/manfred-kaiser/business-rule-engine/compare/0.1.3...0.2.0
 [0.1.3]: https://github.com/manfred-kaiser/business-rule-engine/compare/0.1.2...0.1.3
 [0.1.2]: https://github.com/manfred-kaiser/business-rule-engine/compare/0.1.1...0.1.2
 [0.1.1]: https://github.com/manfred-kaiser/business-rule-engine/compare/0.1.0...0.1.1

business_rule_engine/__init__.py

@@ -122,6 +122,14 @@ def parsestr(self, text: Text) -> None:
             if rulename and is_action and not ignore_line:
                 self.rules[rulename].actions.append(line.strip())
 
+    def add_rule(self, rulename: Text, condition: Text, action: Text) -> None:
+        if rulename in self.rules:
+            raise DuplicateRuleName("Rule '{}' already exists!".format(rulename))
+        rule = Rule(rulename)
+        rule.conditions.append(condition)
+        rule.actions.append(action)
+        self.rules[rulename] = rule
+
     @classmethod
     def register_function(cls, function: Any, function_name: Optional[Text] = None) -> None:
         custom_function_name = function_name or function.__name__

setup.py

@@ -10,7 +10,7 @@
 
 setup(
     name='business-rule-engine',
-    version='0.1.3',
+    version='0.2.0',
     author='Manfred Kaiser',
     author_email='manfred.kaiser@logfile.at',
     description='Python DSL for setting up business intelligence rules',

tests/test_rules.py

@@ -94,3 +94,12 @@ def test_rule():
 
     assert rule.check_condition(params) == True
     assert rule.run_action(params) == 5
+
+
+def test_add_rule():
+    parser = RuleParser()
+    parser.add_rule('testrule', 'products_in_stock < 20', '2 + 3')
+    params = {
+        'products_in_stock': 10
+    }
+    parser.execute(params)