add basic regex test
This commit is contained in:
Paul Trowbridge
parent
605bde16ec
commit
9897cf1bee
221
interface/map_def/sample_regex.sql
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221
interface/map_def/sample_regex.sql
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@ -0,0 +1,221 @@
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DROP FUNCTION IF EXISTS tps.test_regex(jsonb);
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CREATE FUNCTION tps.test_regex(_defn jsonb) RETURNS jsonb
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LANGUAGE plpgsql
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AS
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$f$
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DECLARE
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_rslt jsonb;
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BEGIN
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WITH
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--------------------apply regex operations to transactions---------------------------------------------------------------------------------
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rx AS (
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SELECT
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t.srce,
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t.id,
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t.rec,
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m.target,
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m.seq,
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regex->>'function' regex_function,
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e.v ->> 'field' result_key_name,
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e.v ->> 'key' target_json_path,
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e.v ->> 'flag' regex_options_flag,
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e.v->>'map' map_intention,
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e.v->>'retain' retain_result,
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e.v->>'regex' regex_expression,
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e.rn target_item_number,
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COALESCE(mt.rn,rp.rn,1) result_number,
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mt.mt rx_match,
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rp.rp rx_replace,
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--------------------------json key name assigned to return value-----------------------------------------------------------------------
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CASE e.v->>'map'
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WHEN 'y' THEN
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e.v->>'field'
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ELSE
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null
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END map_key,
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--------------------------json value resulting from regular expression-----------------------------------------------------------------
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CASE e.v->>'map'
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WHEN 'y' THEN
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CASE regex->>'function'
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WHEN 'extract' THEN
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CASE WHEN array_upper(mt.mt,1)=1
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THEN to_json(mt.mt[1])
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ELSE array_to_json(mt.mt)
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END::jsonb
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WHEN 'replace' THEN
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to_jsonb(rp.rp)
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ELSE
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'{}'::jsonb
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END
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ELSE
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NULL
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END map_val,
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--------------------------flag for if retruned regex result is stored as a new part of the final json output---------------------------
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CASE e.v->>'retain'
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WHEN 'y' THEN
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e.v->>'field'
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ELSE
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NULL
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END retain_key,
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--------------------------push regex result into json object---------------------------------------------------------------------------
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CASE e.v->>'retain'
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WHEN 'y' THEN
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CASE regex->>'function'
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WHEN 'extract' THEN
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CASE WHEN array_upper(mt.mt,1)=1
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THEN to_json(trim(mt.mt[1]))
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ELSE array_to_json(mt.mt)
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END::jsonb
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WHEN 'replace' THEN
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to_jsonb(rtrim(rp.rp))
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ELSE
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'{}'::jsonb
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END
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ELSE
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NULL
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END retain_val
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FROM
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--------------------------start with all regex maps------------------------------------------------------------------------------------
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(SELECT _defn->>'srce' srce, _defn->>'name' target, _defn->'regex' regex, (_defn->>'sequence')::numeric seq) m
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--------------------------isolate matching basis to limit map to only look at certain json---------------------------------------------
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JOIN LATERAL jsonb_array_elements(m.regex->'where') w(v) ON TRUE
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--------------------------break out array of regluar expressions in the map------------------------------------------------------------
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JOIN LATERAL jsonb_array_elements(m.regex->'defn') WITH ORDINALITY e(v, rn) ON true
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--------------------------join to main transaction table but only certain key/values are included--------------------------------------
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INNER JOIN tps.trans t ON
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t.srce = m.srce AND
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t.rec @> w.v
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--------------------------each regex references a path to the target value, extract the target from the reference and do regex---------
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LEFT JOIN LATERAL regexp_matches(t.rec #>> ((e.v ->> 'key')::text[]), e.v ->> 'regex'::text,COALESCE(e.v ->> 'flag','')) WITH ORDINALITY mt(mt, rn) ON
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m.regex->>'function' = 'extract'
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--------------------------same as above but for a replacement type function------------------------------------------------------------
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LEFT JOIN LATERAL regexp_replace(t.rec #>> ((e.v ->> 'key')::text[]), e.v ->> 'regex'::text, e.v ->> 'replace'::text,e.v ->> 'flag') WITH ORDINALITY rp(rp, rn) ON
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m.regex->>'function' = 'replace'
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)
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--SELECT * FROM rx LIMIT 100
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, agg_to_target_items AS (
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SELECT
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srce
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,id
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,target
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,seq
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,map_intention
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,regex_function
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,target_item_number
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,result_key_name
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,target_json_path
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,CASE WHEN map_key IS NULL
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THEN
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NULL
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ELSE
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jsonb_build_object(
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map_key,
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CASE WHEN max(result_number) = 1
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THEN
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jsonb_agg(map_val ORDER BY result_number) -> 0
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ELSE
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jsonb_agg(map_val ORDER BY result_number)
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END
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)
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END map_val
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,CASE WHEN retain_key IS NULL
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THEN
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NULL
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ELSE
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jsonb_build_object(
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retain_key,
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CASE WHEN max(result_number) = 1
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THEN
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jsonb_agg(retain_val ORDER BY result_number) -> 0
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ELSE
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jsonb_agg(retain_val ORDER BY result_number)
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END
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)
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END retain_val
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FROM
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rx
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GROUP BY
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srce
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,id
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,target
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,seq
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,map_intention
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,regex_function
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,target_item_number
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,result_key_name
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,target_json_path
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,map_key
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,retain_key
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)
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--SELECT * FROM agg_to_target_items LIMIT 100
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, agg_to_target AS (
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SELECT
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srce
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,id
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,target
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,seq
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,map_intention
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,tps.jsonb_concat_obj(COALESCE(map_val,'{}'::JSONB)) map_val
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,jsonb_strip_nulls(tps.jsonb_concat_obj(COALESCE(retain_val,'{}'::JSONB))) retain_val
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FROM
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agg_to_target_items
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GROUP BY
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srce
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,id
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,target
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,seq
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,map_intention
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)
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, agg_to_ret AS (
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SELECT
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srce
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,target
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,seq
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,map_intention
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,map_val
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,retain_val
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,count(*) "count"
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FROM
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agg_to_target
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GROUP BY
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srce
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,target
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,seq
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,map_intention
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,map_val
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,retain_val
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)
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,agg_to_id AS (
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SELECT
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l.srce
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,l.target
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,l.map_val
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,l."count"
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FROM
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agg_to_ret l
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ORDER BY
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l.srce
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,l.target
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,l."count" desc
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)
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SELECT
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jsonb_agg(row_to_json(agg_to_id)::jsonb)
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INTO
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_rslt
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FROM
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agg_to_id;
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RETURN _rslt;
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END;
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$f$;
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