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https://gitee.com/milvus-io/milvus.git
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6c55db44f1
two point:
(1) reoder conjucts expr's subexpr, postpone heavy operations
sequence: int(column) -> index(column) -> string(column) -> light
conjuct
...... -> json(column) -> heavy conjuct -> two_column_compare
(2) support pre filter for expr execute, skip scan raw data that had
been skipped
because of preceding expr result.
#39869
Signed-off-by: luzhang <luzhang@zilliz.com>
Co-authored-by: luzhang <luzhang@zilliz.com>
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include <fmt/core.h>
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#include "common/EasyAssert.h"
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#include "common/Types.h"
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#include "common/Vector.h"
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#include "exec/expression/Expr.h"
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#include "segcore/SegmentInterface.h"
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namespace milvus {
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namespace exec {
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class PhyAlwaysTrueExpr : public Expr {
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public:
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PhyAlwaysTrueExpr(
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const std::vector<std::shared_ptr<Expr>>& input,
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const std::shared_ptr<const milvus::expr::AlwaysTrueExpr>& expr,
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const std::string& name,
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const segcore::SegmentInternalInterface* segment,
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int64_t active_count,
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int64_t batch_size)
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: Expr(DataType::BOOL, std::move(input), name),
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expr_(expr),
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active_count_(active_count),
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batch_size_(batch_size) {
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}
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void
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Eval(EvalCtx& context, VectorPtr& result) override;
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void
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MoveCursor() override {
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if (!has_offset_input_) {
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int64_t real_batch_size =
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current_pos_ + batch_size_ >= active_count_
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? active_count_ - current_pos_
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: batch_size_;
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current_pos_ += real_batch_size;
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}
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}
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std::string
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ToString() const override {
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return "[AlwaysTrue]";
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}
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bool
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IsSource() const override {
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return true;
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}
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std::optional<milvus::expr::ColumnInfo>
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GetColumnInfo() const override {
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return std::nullopt;
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}
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private:
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std::shared_ptr<const milvus::expr::AlwaysTrueExpr> expr_;
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int64_t active_count_;
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int64_t current_pos_{0};
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int64_t batch_size_;
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};
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} //namespace exec
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} // namespace milvus
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