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43 lines
1.6 KiB
Protocol Buffer
43 lines
1.6 KiB
Protocol Buffer
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// SPDX-License-Identifier: Apache-2.0
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// SPDX-FileCopyrightText: Copyright The Lance Authors
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syntax = "proto3";
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package lance.table;
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// NOTE: Do *NOT* add new index details here. Add them to the index.proto file instead.
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// This file is in the lance.table package namespace while the index.proto file is in the
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// lance.index package namespace.
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//
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// These are only here for forward compatibility. Older versions of Lance expect btree indexes
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// to have lance.table in the package namespace.
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//
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// If you need to modify these messages (e.g. to add new fields to btree or bitmap) then
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// it is ok to modify them here.
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// Currently many of these are empty messages because all needed details are either hard-coded (e.g.
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// filenames) or stored in the index itself. However, we may want to add more details in the
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// future, in particular we can add details that may be useful for planning queries (e.g. don't
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// force us to load the index until we know we can make use of it)
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message BTreeIndexDetails {}
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message BitmapIndexDetails {}
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message LabelListIndexDetails {}
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message NGramIndexDetails {}
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message ZoneMapIndexDetails {}
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message InvertedIndexDetails {
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// Marking this field as optional as old versions of the index store blank details and we
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// need to make sure we have a proper optional field to detect this.
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optional string base_tokenizer = 1;
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string language = 2;
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bool with_position = 3;
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optional uint32 max_token_length = 4;
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bool lower_case = 5;
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bool stem = 6;
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bool remove_stop_words = 7;
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bool ascii_folding = 8;
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uint32 min_ngram_length = 9;
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uint32 max_ngram_length = 10;
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bool prefix_only = 11;
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}
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