Added some comments and basic write support

Crx/simplenode.py

@@ -8,6 +8,8 @@ LOGGER = Logger(__name__)
 
 
 class SimpleNode:
+    _normal_attrs = ['path', '_data', '_connection']
+    
     def __init__(self, path: str, data: dict, connection: 'Connection'):
         self.path = path
         self._data = data
@@ -16,13 +18,37 @@ class SimpleNode:
     def download(self, key: str = 'jcr:data') -> bytes:
         if ':' + key not in self._data:
             LOGGER.warning(f"Key :{key} is not present, binary probably not available")
-        # TODO value of the :{key} must be an int
+        size = self._data.get(':' + key)
+        if not isinstance(size, int):
+            LOGGER.warning("Size is not present")
         # TODO value denotes file size, warn/deny large files?
         return self._connection.download_binary(self.path + '/' + key)
 
     def __getitem__(self, item):
         return getattr(self, item)
 
+    def __setitem__(self, key, value):
+        return self.__setattr__(key, value)
+
+    def __setattr__(self, key, value):
+        if key in self._normal_attrs:
+            return super(SimpleNode, self).__setattr__(key, value)
+        if (':' + key) in self._data:
+            value_type = self._data[':' + key]
+            if isinstance(value_type, int):
+                value_type = 'Binary'
+        else:
+            if isinstance(value, str):
+                value_type = 'String'
+            elif isinstance(value, int):
+                value_type = 'Long'
+            elif isinstance(value, bool):
+                value_type = 'Boolean'
+            else:
+                raise ValueError(f"Unknown value type {type(value)!r}")
+
+        self._connection._patch_builder.set_value(self.path + '/' + key, value, value_type)
+
     def __getattr__(self, item: str):
         try:
             return super(SimpleNode, self).__getattr__(item)