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63 lines
1.8 KiB
63 lines
1.8 KiB
#' Generate a query string query for ElasticSearch
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#'
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#' Generate a query string query for ElasticSearch
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#' @param query Query string in ElasticSearch query string format
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#' @param fields List of field names to return, defaults to all
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#' @param random Return randomized results. Boolean, defaults to FALSE
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#' @return A formatted ElasticSearch query string query
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#' @export
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#' @examples
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#' query_string(query)
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#################################################################################################
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#################################### Get data from ElasticSearch ################################
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#################################################################################################
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query_string <- function(query, fields = F, random = F, default_operator = "AND") {
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if (typeof(fields) == 'logical') {
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fields <- '*'
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}
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if (random == T) {
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return(paste0(
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'{
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"_source": ',toJSON(fields),',
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"query": {
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"function_score": {
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"query": {
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"bool":{
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"filter": [{
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"query_string" : {
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"default_field" : "text",
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"query" : "',query,'",
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"default_operator": "',default_operator,'",
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"allow_leading_wildcard" : false
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}
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}]
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}
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},
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"random_score": {},
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"boost_mode": "sum"
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}
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}
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}'
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))
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} else {
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return(paste0(
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'{
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"_source": ',toJSON(fields),',
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"query": {
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"bool":{
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"filter": [{
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"query_string" : {
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"default_field" : "text",
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"query" : "',query,'",
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"default_operator": "',default_operator,'",
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"allow_leading_wildcard" : false
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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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}
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