src/cpl_query/_query/any_query.py

@@ -0,0 +1,7 @@
+from cpl_query._query.where_query import where_query
+from cpl_query.extension.iterable_abc import IterableABC
+
+
+def any_query(_list: IterableABC, _func: str) -> bool:
+    result = where_query(_list, _func)
+    return len(result) > 0

src/cpl_query/_query/first_query.py

@@ -0,0 +1,17 @@
+from typing import Optional
+
+from cpl_query.extension.iterable_abc import IterableABC
+
+
+def first_query(_list: IterableABC) -> any:
+    if len(_list) == 0:
+        raise Exception('Index out of range')
+
+    return _list[0]
+
+
+def first_or_default_query(_list: IterableABC) -> Optional[any]:
+    if len(_list) == 0:
+        return None
+
+    return _list[0]

src/cpl_query/_query/for_each_query.py

@@ -0,0 +1,8 @@
+from collections import Callable
+
+from cpl_query.extension.iterable_abc import IterableABC
+
+
+def for_each_query(_list: IterableABC, func: Callable):
+    for element in _list:
+        func(element)

src/cpl_query/_query/single_query.py

@@ -0,0 +1,21 @@
+from typing import Optional
+
+from cpl_query.extension.iterable_abc import IterableABC
+
+
+def single_query(_list: IterableABC) -> any:
+    if len(_list) > 1:
+        raise Exception('Found more than one element')
+    elif len(_list) == 0:
+        raise Exception('Found no element')
+
+    return _list[0]
+
+
+def single_or_default_query(_list: IterableABC) -> Optional[any]:
+    if len(_list) > 1:
+        raise Exception('Index out of range')
+    elif len(_list) == 0:
+        return None
+
+    return _list[0]

src/cpl_query/_query/where_query.py

@@ -0,0 +1,13 @@
+from cpl_query.extension.iterable_abc import IterableABC
+
+
+def where_query(_list: IterableABC, _func: str) -> IterableABC:
+    result = IterableABC()
+    for element in _list:
+        element_type = type(element).__name__
+        if element_type in _func:
+            func = _func.replace(element_type, 'element')
+            if eval(func):
+                result.append(element)
+
+    return result

src/cpl_query/cpl_query.json

@@ -20,7 +20,7 @@
     ],
     "PythonVersion": ">=3.9.2",
     "PythonPath": {
-      "linux": "../../cpl-env/bin/python3.9"
+      "linux": "../cpl-env/bin/python3.9"
     },
     "Classifiers": []
   },

src/cpl_query/extension/iterable_abc.py

@@ -0,0 +1,30 @@
+from abc import ABC, abstractmethod
+from typing import Optional, Callable
+
+
+class IterableABC(ABC, list):
+
+    @abstractmethod
+    def __init__(self):
+        list.__init__(self)
+
+    @abstractmethod
+    def any(self, func: str) -> bool: pass
+
+    @abstractmethod
+    def first(self) -> any: pass
+
+    @abstractmethod
+    def first_or_default(self) -> any: pass
+
+    @abstractmethod
+    def for_each(self, func: Callable): pass
+
+    @abstractmethod
+    def single(self): pass
+
+    @abstractmethod
+    def single_or_default(self) -> Optional[any]: pass
+
+    @abstractmethod
+    def where(self, func: str) -> 'IterableABC': pass

src/cpl_query/extension/list.py

@@ -0,0 +1,40 @@
+from typing import Optional, Callable
+
+from .._query.any_query import any_query
+from .._query.first_query import first_or_default_query, first_query
+from .._query.for_each_query import for_each_query
+from .._query.single_query import single_query, single_or_default_query
+from .._query.where_query import where_query
+from cpl_query.extension.iterable_abc import IterableABC
+
+
+class List(IterableABC):
+
+    def __init__(self):
+        IterableABC.__init__(self)
+
+    def any(self, func: str) -> bool:
+        return any_query(self, func)
+
+    def first(self) -> any:
+        return first_query(self)
+
+    def first_or_default(self) -> Optional[any]:
+        return first_or_default_query(self)
+
+    def for_each(self, func: Callable):
+        for_each_query(self, func)
+
+    def single(self) -> any:
+        return single_query(self)
+
+    def single_or_default(self) -> Optional[any]:
+        return single_or_default_query(self)
+
+    def where(self, func: str) -> IterableABC:
+        res = where_query(self, func)
+        res.__class__ = List
+        return res
+
+    def to_list(self) -> list:
+        return list(self)

src/cpl_query/main.py

@@ -1,9 +0,0 @@
-from cpl.console import Console
-
-
-def main():
-    Console.write_line('Hello World')
-
-
-if __name__ == '__main__':
-    main()

src/cpl_query/tests/models.py

@@ -0,0 +1,12 @@
+class User:
+
+    def __init__(self, name, address):
+        self.name = name
+        self.address = address
+
+
+class Address:
+
+    def __init__(self, street, nr):
+        self.street = street
+        self.nr = nr

src/cpl_query/tests/query_test.py

@@ -0,0 +1,111 @@
+import string
+import unittest
+from random import randint
+
+from cpl.utils import String
+from cpl_query.extension.list import List
+from cpl_query.tests.models import User, Address
+
+
+class QueryTest(unittest.TestCase):
+
+    def setUp(self) -> None:
+        self._tests = List()
+        self._t_user = User(
+            'Test user',
+            Address(
+                'teststr.',
+                15
+            )
+        )
+
+        self._generate_test_data()
+
+    def _generate_test_data(self):
+        for i in range(0, 100):
+            user = User(
+                String.random_string(string.ascii_letters, 8),
+                Address(
+                    String.random_string(string.ascii_letters, 10),
+                    randint(0, 10)
+                )
+            )
+
+            self._tests.append(user)
+
+        self._tests.append(self._t_user)
+
+    def test_any(self):
+        results = []
+        for user in self._tests:
+            if user.address.nr == 10:
+                results.append(user)
+
+        res = self._tests.any(f'User.address.nr == 10')
+        n_res = self._tests.any(f'User.address.nr == 100')
+
+        self.assertTrue(res)
+        self.assertFalse(n_res)
+
+    def test_first(self):
+        results = []
+        for user in self._tests:
+            if user.address.nr == 10:
+                results.append(user)
+
+        res = self._tests.where(f'User.address.nr == 10')
+        s_res = self._tests.where(f'User.address.nr == 10').first()
+
+        self.assertEqual(len(res), len(results))
+        self.assertIsNotNone(s_res)
+
+    def test_first_or_default(self):
+        results = []
+        for user in self._tests:
+            if user.address.nr == 10:
+                results.append(user)
+
+        res = self._tests.where(f'User.address.nr == 10')
+        s_res = self._tests.where(f'User.address.nr == 10').first_or_default()
+        sn_res = self._tests.where(f'User.address.nr == 11').first_or_default()
+
+        self.assertEqual(len(res), len(results))
+        self.assertIsNotNone(s_res)
+        self.assertIsNone(sn_res)
+
+    def test_for_each(self):
+        users = []
+        self._tests.for_each(
+            lambda user: (
+                # Console.write_line(f'User: {user.name} | '),
+                # Console.write(f'Address: {user.address.street}'),
+                users.append(user)
+            )
+        )
+
+        self.assertEqual(len(users), len(self._tests))
+
+    def test_single(self):
+        res = self._tests.where(f'User.address.nr == {self._t_user.address.nr}')
+        s_res = self._tests.where(f'User.address.nr == {self._t_user.address.nr}').single()
+
+        self.assertEqual(len(res), 1)
+        self.assertEqual(self._t_user, s_res)
+
+    def test_single_or_default(self):
+        res = self._tests.where(f'User.address.nr == {self._t_user.address.nr}')
+        s_res = self._tests.where(f'User.address.nr == {self._t_user.address.nr}').single_or_default()
+        sn_res = self._tests.where(f'User.address.nr == {self._t_user.address.nr + 1}').single_or_default()
+
+        self.assertEqual(len(res), 1)
+        self.assertEqual(self._t_user, s_res)
+        self.assertIsNone(sn_res)
+
+    def test_where(self):
+        results = []
+        for user in self._tests:
+            if user.address.nr == 5:
+                results.append(user)
+
+        res = self._tests.where('User.address.nr == 5')
+        self.assertEqual(len(results), len(res))

src/cpl_query/tests/tester.py

@@ -0,0 +1,23 @@
+import unittest
+
+from cpl_query.tests.query_test import QueryTest
+
+
+class Tester:
+
+    def __init__(self):
+        self._suite = unittest.TestSuite()
+
+    def create(self):
+        loader = unittest.TestLoader()
+        self._suite.addTests(loader.loadTestsFromTestCase(QueryTest))
+
+    def start(self):
+        runner = unittest.TextTestRunner()
+        runner.run(self._suite)
+
+
+if __name__ == '__main__':
+    tester = Tester()
+    tester.create()
+    tester.start()