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e549148a19
issue: #29988 This pr adds full-support for wildcard pattern matching from end to end. Before this pr, the users can only use prefix match in their expression, for example, "like 'prefix%'". With this pr, more flexible syntax can be combined. To do so, this pr makes these changes: - 1. support regex query both on index and raw data; - 2. translate the pattern matching to regex query, so that it can be handled by the regex query logic; - 3. loose the limit of the expression parsing, which allows general pattern matching syntax; With the support of regex query in segcore backend, we can also add mysql-like `REGEXP` syntax later easily. --------- Signed-off-by: longjiquan <jiquan.long@zilliz.com>
89 lines
2.3 KiB
C++
89 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 <boost/dynamic_bitset.hpp>
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#include <map>
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#include <memory>
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#include <string>
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#include "common/Types.h"
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#include "common/EasyAssert.h"
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#include "index/Index.h"
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#include "fmt/format.h"
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namespace milvus::index {
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template <typename T>
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class ScalarIndex : public IndexBase {
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public:
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void
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BuildWithRawData(size_t n,
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const void* values,
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const Config& config = {}) override;
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void
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BuildWithDataset(const DatasetPtr& dataset,
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const Config& config = {}) override {
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PanicInfo(Unsupported,
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"scalar index don't support build index with dataset");
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};
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public:
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virtual void
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Build(size_t n, const T* values) = 0;
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virtual const TargetBitmap
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In(size_t n, const T* values) = 0;
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virtual const TargetBitmap
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NotIn(size_t n, const T* values) = 0;
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virtual const TargetBitmap
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Range(T value, OpType op) = 0;
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virtual const TargetBitmap
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Range(T lower_bound_value,
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bool lb_inclusive,
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T upper_bound_value,
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bool ub_inclusive) = 0;
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virtual T
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Reverse_Lookup(size_t offset) const = 0;
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virtual const TargetBitmap
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Query(const DatasetPtr& dataset);
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virtual int64_t
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Size() = 0;
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virtual bool
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SupportRegexQuery() const {
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return false;
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}
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virtual const TargetBitmap
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RegexQuery(const std::string& pattern) {
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PanicInfo(Unsupported, "regex query is not supported");
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}
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};
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template <typename T>
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using ScalarIndexPtr = std::unique_ptr<ScalarIndex<T>>;
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} // namespace milvus::index
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