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Full Text Search support for json and jsonb

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The new functions are ts_headline() and to_tsvector.

Dmitry Dolgov, edited and documented by me.
This commit is contained in:
Andrew Dunstan
2017-03-31 14:26:03 -04:00
parent c80b9920fc
commit e306df7f9c
9 changed files with 613 additions and 0 deletions
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26
src/test/regress/sql/json.sql
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@ -551,3 +551,29 @@ select json_strip_nulls('[1,{"a":1,"b":null,"c":2},3]');
-- an empty object is not null and should not be stripped
select json_strip_nulls('{"a": {"b": null, "c": null}, "d": {} }');
-- json to tsvector
select to_tsvector('{"a": "aaa bbb ddd ccc", "b": ["eee fff ggg"], "c": {"d": "hhh iii"}}'::json);
-- json to tsvector with config
select to_tsvector('simple', '{"a": "aaa bbb ddd ccc", "b": ["eee fff ggg"], "c": {"d": "hhh iii"}}'::json);
-- json to tsvector with stop words
select to_tsvector('{"a": "aaa in bbb ddd ccc", "b": ["the eee fff ggg"], "c": {"d": "hhh. iii"}}'::json);
-- ts_vector corner cases
select to_tsvector('""'::json);
select to_tsvector('{}'::json);
select to_tsvector('[]'::json);
select to_tsvector('null'::json);
-- ts_headline for json
select ts_headline('{"a": "aaa bbb", "b": {"c": "ccc ddd fff", "c1": "ccc1 ddd1"}, "d": ["ggg hhh", "iii jjj"]}'::json, tsquery('bbb & ddd & hhh'));
select ts_headline('english', '{"a": "aaa bbb", "b": {"c": "ccc ddd fff"}, "d": ["ggg hhh", "iii jjj"]}'::json, tsquery('bbb & ddd & hhh'));
select ts_headline('{"a": "aaa bbb", "b": {"c": "ccc ddd fff", "c1": "ccc1 ddd1"}, "d": ["ggg hhh", "iii jjj"]}'::json, tsquery('bbb & ddd & hhh'), 'StartSel = <, StopSel = >');
select ts_headline('english', '{"a": "aaa bbb", "b": {"c": "ccc ddd fff", "c1": "ccc1 ddd1"}, "d": ["ggg hhh", "iii jjj"]}'::json, tsquery('bbb & ddd & hhh'), 'StartSel = <, StopSel = >');
-- corner cases for ts_headline with json
select ts_headline('null'::json, tsquery('aaa & bbb'));
select ts_headline('{}'::json, tsquery('aaa & bbb'));
select ts_headline('[]'::json, tsquery('aaa & bbb'));