Cloudant Search Queries Index Function - lucene

Question

I can't find very much documentation on how to properly define the index function such that I can do a full text search on the information that I need.
I've used the Alchemy API to add "entities" json to my documents.
For instance, I have a document with the following:
"_id": "redacted",
"_rev": "redacted",
"session": "20152016",
"entities": [
{
"relevance": "0.797773",
"count": "3",
"type": "Organization",
"text": "California Constitution"
},
{
"relevance": "0.690092",
"count": "1",
"type": "Organization",
"text": "Governors Highway Safety Association"
}
]
I haven't been able to find any code snippets showing how to construct a search index function that looks at nested json.
My stab at indexing the whole object appears to be incorrect.
This is the full design document:
{
"_id": "_design/entities",
"_rev": "redacted",
"views": {},
"language": "javascript",
"indexes": {
"entities": {
"analyzer": "standard",
"index": "function (doc) {\n if (doc.entities.relevance > 0.5){\n index(\"default\", doc.entities.text, {\"store\":\"yes\"});\n }\n\n}"
}
}
}
And the search index formatted a little bit more clearly is
function (doc) {
if (doc.entities.relevance > 0.5){
index("default", doc.entities.text, {"store":"yes"});
}
}
Adding the for loop as suggested below makes a lot of sense.
However, I still am not able to return any results.
My query is
"https://user.cloudant.com/calbills/_design/entities/_search/entities?q=Governors"
Server response is:
{"total_rows":0,"bookmark":"g2o","rows":[]}

Answer 1

The "for..in" style loop doesn't seem to work.
However, I do get results using the more standard for loop loops.
function (doc) {
if(doc.entities){
var arrayLength = doc.entities.length;
for (var i = 0; i < arrayLength; i++) {
if (parseFloat(doc.entities[i].relevance) > 0.5)
index("default", doc.entities[i].text);
}
}
}
Cheers!

Answer 2

Your need to loop on the elements in the doc.entities array.
function (doc) {
for(entity in doc.entities){
if (parseFloat(entity.relevance) > 0.5){
index("default", entity.text, {"store":"yes"});
}
}
}

Answer 3

This is what I tried :
function(doc){
if(doc.entities){
for( var p in doc.entities ){
if (doc.entities[p].relevance > 0.5)
{
index("entitiestext", doc.entities[p].text, {"store":"yes"});
}
}
}
}
Query String used :"q=entitiestext:California Constitution&include_docs=true"
Result:
{
"total_rows": 1,
"bookmark": "xxxx",
"rows": [
{
"id": "redacted",
"order": [
0.03693288564682007,
1
],
"fields": {
"entitiestext": [
"Governors Highway Safety Association",
"California Constitution"
]
},
"doc": {
"_id": "redacted",
"_rev": "4-7f6e6db246abcf2f884dc0b91451272a",
"session": "20152016",
"entities": [
{
"relevance": "0.797773",
"count": "3",
"type": "Organization",
"text": "California Constitution"
},
{
"relevance": "0.690092",
"count": "1",
"type": "Organization",
"text": "Governors Highway Safety Association"
}
]
}
}
]
}
Query String used: q=entitiestext:California Constitution
Result:
{
"total_rows": 1,
"bookmark": "xxxx",
"rows": [
{
"id": "redacted",
"order": [
0.03693288564682007,
1
],
"fields": {
"entitiestext": [
"Governors Highway Safety Association",
"California Constitution"
]
}
}
]
}