Details
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Improvement
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Resolution: Won't Fix
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Minor
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None
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None
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None
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1
Description
New OBJECT_FILTER function that returns the nested fields that match the supplied pattern retaining the path structure.
OBJECT_FILTER ( expression [, options])
expression - resolves to the object on which to apply the filtering
options:
"pattern" - string, the pattern to match
"regex" - boolean, if pattern is a plain string (false) or a regular expression (true, default)
"arraysubscript" - TRUE (default) / FALSE indicating whether or not to include array subscripts in field names prior to applying the filter. (See https://issues.couchbase.com/browse/DOC-8641 information for OBJECT_PATHS for examples.)
"composites" - TRUE (default) / FALSE indicating whether or not the names matched against should include values that will also be broken down further. (See DOC-8541 / OBJECT_PATHS for examples.)
"patternspace"
String literal "field" indicating the pattern is matched against individual field names or "path" (default) indicating the pattern is matched against composite path names.
Example:
select object_filter(t,{"pattern":"Business service"}) from `travel-sample` t where type = 'hotel' limit 2;
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{
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...
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"results": [
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{
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"$1": {
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"reviews": [
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{
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"ratings": {
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"Business service (e.g., internet access)": 4
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}
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}
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]
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}
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},
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{
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"$1": null
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}
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],
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"status": "success",
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...
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Example using OBJECT_PATHS to determine the full field path names:
select object_paths(t) from `travel-sample` t where type = 'hotel' limit 1;
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{
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...
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"results": [
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{
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"$1": [
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"address",
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"alias",
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"checkin",
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"checkout",
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"city",
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"country",
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"description",
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"directions",
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"email",
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"fax",
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"free_breakfast",
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"free_internet",
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"free_parking",
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"geo",
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"geo.accuracy",
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"geo.lat",
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"geo.lon",
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"id",
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"name",
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"pets_ok",
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"phone",
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"price",
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"public_likes",
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"reviews",
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"reviews[0].author",
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"reviews[0].content",
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"reviews[0].date",
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"reviews[0].ratings",
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"reviews[0].ratings.Cleanliness",
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"reviews[0].ratings.Location",
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"reviews[0].ratings.Overall",
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"reviews[0].ratings.Rooms",
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"reviews[0].ratings.Service",
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"reviews[0].ratings.Value",
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"reviews[1].author",
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"reviews[1].content",
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"reviews[1].date",
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"reviews[1].ratings",
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"reviews[1].ratings.Cleanliness",
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"reviews[1].ratings.Location",
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"reviews[1].ratings.Overall",
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"reviews[1].ratings.Rooms",
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"reviews[1].ratings.Service",
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"reviews[1].ratings.Value",
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"reviews[1].ratings.`Business service (e.g., internet access)`",
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"reviews[1].ratings.`Check in / front desk`",
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"state",
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"title",
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"tollfree",
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"type",
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"url",
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"vacancy"
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]
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}
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],
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...
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select object_filter(t,{"pattern":"reviews[1].ratings.Service","regex":false}) from `travel-sample` t where type = 'hotel' limit 1;
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{
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...
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"results": [
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{
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"$1": {
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"reviews": [
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{
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"ratings": {
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"Service": 3
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}
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}
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]
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}
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}
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],
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...
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Attachments
Issue Links
- relates to
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- Resolved
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