kangkaisen commented on a change in pull request #1599: Add bitmap Agg type and
Udaf
URL: https://github.com/apache/incubator-doris/pull/1599#discussion_r311519204
##########
File path: be/src/exprs/aggregate_functions.cpp
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@@ -2381,6 +2382,95 @@ void
AggregateFunctions::offset_fn_update(FunctionContext* ctx, const IntVal& sr
*dst = src;
}
+
+void AggregateFunctions::bitmap_init(FunctionContext* ctx, StringVal* dst) {
+ dst->is_null = false;
+ dst->len = sizeof(RoaringBitmap);
+ dst->ptr = (uint8_t*)new RoaringBitmap();
+}
+
+template <typename T>
+void AggregateFunctions::bitmap_update(FunctionContext* ctx, T& src,
StringVal* dst) {
+ if (src.is_null) {
+ return;
+ }
+ DCHECK(!dst->is_null);
+
+ auto* dst_bitmap = reinterpret_cast<RoaringBitmap*>(dst->ptr);
+ dst_bitmap->update(src.val);
+}
+
+void AggregateFunctions::bitmap_merge(FunctionContext* ctx, StringVal& src,
StringVal* dst) {
+ DCHECK(!dst->is_null);
+ DCHECK(!src.is_null);
+
+ RoaringBitmap src_bitmap = RoaringBitmap((char*)src.ptr);
+ auto* dst_bitmap = reinterpret_cast<RoaringBitmap*>(dst->ptr);
+ dst_bitmap->merge(src_bitmap);
+}
+
+StringVal AggregateFunctions::bitmap_serialize(FunctionContext* ctx, const
StringVal& src) {
+ DCHECK(!src.is_null);
+
+ auto* src_bitmap = reinterpret_cast<RoaringBitmap*>(src.ptr);
+ StringVal result(ctx, src_bitmap->size());
+ src_bitmap->serialize((char*)result.ptr);
Review comment:
Yed
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