2 files changed, 13 insertions, 0 deletions
diff --git a/bsie/base/extractor.py b/bsie/base/extractor.py
index 7acf2bd..2fc4f18 100644
--- a/bsie/base/extractor.py
+++ b/bsie/base/extractor.py
@@ -63,6 +63,13 @@ class Extractor(abc.ABC):
     def __repr__(self) -> str:
         return f'{typename(self)}()'
 
+    def __eq__(self, other: typing.Any) -> bool:
+        return isinstance(other, type(self)) \
+          and self.CONTENT_READER == other.CONTENT_READER \
+          and self.schema == other.schema
+
+    def __hash__(self) -> int:
+        return hash((type(self), self.CONTENT_READER, self.schema))
 
     def predicates(self) -> typing.Iterator[_schema.Predicate]:
         """Return the predicates that may be part of extracted triples."""
diff --git a/bsie/base/reader.py b/bsie/base/reader.py
index e59abef..b7eabf7 100644
--- a/bsie/base/reader.py
+++ b/bsie/base/reader.py
@@ -32,6 +32,12 @@ class Reader(abc.ABC):
     def __repr__(self) -> str:
         return f'{typename(self)}()'
 
+    def __eq__(self, other: typing.Any) -> bool:
+        return isinstance(other, type(self))
+
+    def __hash__(self) -> int:
+        return hash(type(self))
+
     @abc.abstractmethod
     def __call__(self, path: URI) -> typing.Any:
         """Return some content of the file at *path*.