Fix bug when query is only static

DataTreehouse · Feb 17, 2024 · edf3adb · edf3adb
1 parent 8923996
commit edf3adb
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diff --git a/chrontext/Cargo.toml b/chrontext/Cargo.toml
@@ -8,6 +8,7 @@ polars = {version="0.35.4", features=["lazy", "concat_str", "unique_counts", "gr
 tokio = {version="1.18.2", features=["rt-multi-thread", "rt"]}
 log = "0.4.17"
 #spargebra = { path = "../../spargebra", features = ["rdf-star"]}
+#query_processing = { path = "../../query_processing"}
 query_processing = { git = "https://github.com/DataTreehouse/query_processing"}
 representation = { git = "https://github.com/DataTreehouse/representation"}
 spargebra = { git = "https://github.com/DataTreehouse/spargebra", features = ["rdf-star"]}

diff --git a/chrontext/src/combiner.rs b/chrontext/src/combiner.rs
@@ -119,6 +119,11 @@ impl Combiner {
                     self.execute_static_query(&static_query, None).await?;
                 let new_time_series_queries =
                     self.prepper.prepare(&query, &mut new_solution_mappings);
+                // Combination assumes there is something to combine!
+                // If there are no time series queries, we are done.
+                if new_time_series_queries.is_empty() {
+                    return Ok(new_solution_mappings)
+                }
                 solution_mappings = Some(new_solution_mappings);
                 time_series_queries = Some(new_time_series_queries);
             } else {