complex elasticsearch query over rest - rest

Question

using Rest from classic asp I am able to retrieve data from an index when I perform a simple search such as:
Set xml = Server.CreateObject("Microsoft.XMLHTTP")
xml.Open "GET", "http://elastic:changeme#10.128.128.109:9200/myindex/_search?q='fred blogs',_source='path.real'", False
I now want to retrive data from a much more complex query that if I was using Kibana would look something like this:
GET newsindex/_search
{
"query": {
"function_score": {
"query": { "bool" : {"should": [
{ "term": { "headline": "brown" } },
{ "term": { "bodytext": "brown" } },
{ "term": { "headline": "fox" } },
{ "term": { "bodytext": "fox" } }
]}},
"functions": [
{
"filter": {"match" : { "headline": "brown fox" }},
"weight": 2
},
{
"filter": {"match" : { "bodytext": "brown fox" }},
"weight": 1
},
{
"filter": {"match" : { "bodytext": "fox" }},
"weight": 3
},
{
"filter": {"match" : { "bodytext": "brown" }},
"weight": 3
},
{
"filter": {"match" : { "headline": "brown" }},
"weight": 4
},
{
"filter": {"match" : { "headline": "fox" }},
"weight": 4
}
],
"score_mode": "sum"
}
},"sort": [
{
"_score": {
"order": "asc"
}
}
],
"_source":[ "headline", "bodytext" ]
}
How can I pass this query using Rest? I'll be building queries like this on the fly to pass via rest. But I need to get the construct right.

Answer 1

By using curl command, you can do something like this:
curl -XGET "http://elastic:changeme#10.128.128.109:9200/myindex/_search" -H 'Content-Type: application/json' -d'
{
"query": {
"function_score": {
"query": {
"bool": {
"should": [
{
"term": {
"headline": "brown"
}
},
{
"term": {
"bodytext": "brown"
}
},
{
"term": {
"headline": "fox"
}
},
{
"term": {
"bodytext": "fox"
}
}
]
}
},
"functions": [
{
"filter": {
"match": {
"headline": "brown fox"
}
},
"weight": 2
},
{
"filter": {
"match": {
"bodytext": "brown fox"
}
},
"weight": 1
},
{
"filter": {
"match": {
"bodytext": "fox"
}
},
"weight": 3
},
{
"filter": {
"match": {
"bodytext": "brown"
}
},
"weight": 3
},
{
"filter": {
"match": {
"headline": "brown"
}
},
"weight": 4
},
{
"filter": {
"match": {
"headline": "fox"
}
},
"weight": 4
}
],
"score_mode": "sum"
}
},
"sort": [
{
"_score": {
"order": "asc"
}
}
],
"_source": [
"headline",
"bodytext"
]
}'
You can send your query in data by using curl. I'm sure the same can also be achieved by your Rest client. Just check how to send data using your Rest client.
This post might help. Replace the DataToSend variable in the example with your query and see if this works.