Jiabao-Sun commented on code in PR #17:
URL:
https://github.com/apache/flink-connector-mongodb/pull/17#discussion_r1374478320
##########
flink-connector-mongodb/src/main/java/org/apache/flink/connector/mongodb/table/MongoDynamicTableSource.java:
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@@ -178,6 +196,41 @@ public void applyProjection(int[][] projectedFields,
DataType producedDataType)
this.producedDataType = producedDataType;
}
+ @Override
+ public Result applyFilters(List<ResolvedExpression> filters) {
+ List<ResolvedExpression> acceptedFilters = new ArrayList<>();
+ List<ResolvedExpression> remainingFilters = new ArrayList<>();
+
+ List<Bson> mongoFilters = new ArrayList<>();
+ for (ResolvedExpression filter : filters) {
+ BsonDocument simpleFilter = parseFilter(filter);
+ if (simpleFilter.isEmpty()) {
+ remainingFilters.add(filter);
+ } else {
+ acceptedFilters.add(filter);
+ mongoFilters.add(simpleFilter);
+ }
+ }
+
+ if (!mongoFilters.isEmpty()) {
+ Bson mergedFilter =
+ mongoFilters.size() == 1 ? mongoFilters.get(0) :
Filters.and(mongoFilters);
+ this.filter = mergedFilter.toBsonDocument();
+ LOG.debug("Pushed down filters: {}", filter.toJson());
Review Comment:
Fixed.
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