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-rw-r--r--fatcat_scholar/transform.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/fatcat_scholar/transform.py b/fatcat_scholar/transform.py
index e02043b..a238d81 100644
--- a/fatcat_scholar/transform.py
+++ b/fatcat_scholar/transform.py
@@ -216,6 +216,9 @@ def transform_heavy(heavy: IntermediateBundle) -> Optional[ScholarDoc]:
if heavy.doc_type == DocType.sim_page:
assert ia_sim is not None
assert heavy.sim_fulltext is not None
+ if not ia_sim.first_page or not ia_sim.issue_item:
+ # can't create a valid key if we don't have these fields, so shouldn't index
+ return None
key = f"page_{ia_sim.issue_item}_{ia_sim.first_page}"
sim_issue = ia_sim.issue_item
biblio = es_biblio_from_sim(heavy.sim_fulltext)