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515d0369de
Signed-off-by: xige-16 <xi.ge@zilliz.com> Co-authored-by: dragondriver <jiquan.long@zilliz.com> Co-authored-by: dragondriver <jiquan.long@zilliz.com>
93 lines
2.5 KiB
C++
93 lines
2.5 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 <map>
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#include <memory>
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#include <string>
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#include <vector>
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#include "Plan.h"
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namespace milvus::query {
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class Parser {
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public:
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friend std::unique_ptr<Plan>
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CreatePlan(const Schema& schema, const std::string& dsl_str);
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private:
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std::unique_ptr<Plan>
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CreatePlanImpl(const Json& dsl);
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explicit Parser(const Schema& schema) : schema(schema) {
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}
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// vector node parser, should be called exactly once per pass.
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std::unique_ptr<VectorPlanNode>
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ParseVecNode(const Json& out_body);
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// Dispatcher of all parse function
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// NOTE: when nullptr, it is a pure vector node
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ExprPtr
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ParseAnyNode(const Json& body);
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ExprPtr
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ParseMustNode(const Json& body);
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ExprPtr
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ParseShouldNode(const Json& body);
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ExprPtr
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ParseMustNotNode(const Json& body);
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// parse the value of "should"/"must"/"must_not" entry
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std::vector<ExprPtr>
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ParseItemList(const Json& body);
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// parse the value of "range" entry
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ExprPtr
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ParseRangeNode(const Json& out_body);
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// parse the value of "term" entry
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ExprPtr
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ParseTermNode(const Json& out_body);
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// parse the value of "term" entry
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ExprPtr
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ParseCompareNode(const Json& out_body);
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private:
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// template implementation of leaf parser
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// used by corresponding parser
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template <typename T>
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ExprPtr
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ParseRangeNodeImpl(const FieldName& field_name, const Json& body);
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template <typename T>
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ExprPtr
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ParseTermNodeImpl(const FieldName& field_name, const Json& body);
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private:
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const Schema& schema;
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std::map<std::string, FieldId> tag2field_; // PlaceholderName -> field id
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std::optional<std::unique_ptr<VectorPlanNode>> vector_node_opt_;
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};
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} // namespace milvus::query
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