1 files changed, 22 insertions, 0 deletions
diff --git a/python/refcat/tasks.py b/python/refcat/tasks.py
index 0fabab6..d36784c 100644
--- a/python/refcat/tasks.py
+++ b/python/refcat/tasks.py
@@ -1029,6 +1029,28 @@ class OpenLibraryEditionsMapped(Refcat):
         return luigi.LocalTarget(path=self.path(ext="tsv.zst"), format=Zstd)
 
 
+class OpenLibraryZipISBN(Refcat):
+    """
+    Run skate-reduce from two files.
+    """
+    def requires(self):
+        return {
+            "refs": RefsMapped(mapper="isbn"),
+            "ol": OpenLibraryReleaseMapped(mapper="isbn"),
+        }
+
+    def run(self):
+        output = shellout(r"""
+                          skate-reduce -m exact -r isbn -F <(zstdcat -T0 {refs}) -L <(zstdcat -T0 {ol}) |
+                          zstd -c -T0 > {output}
+                          """,
+                          refs=self.input().get("refs").path,
+                          fatcat=self.input().get("fatcat").path)
+        luigi.LocalTarget(output).move(self.output().path)
+
+    def output(self):
+        return luigi.LocalTarget(path=self.path(ext="json.zst"), format=Zstd)
+
 #
 # Open Library Fuzzy
 # ------------------