Hi guys,
I am not very familiar with aggregations and filtering in ElasticSearch, so
I hope you can help me with my problem.
*Scenario:*
A user visits our website and is searching for a specific product. He
clicks to the search field and types a specifc string. Then hit clicks on
"Search" and gets a list of search results based on his query.
The user wants to filter the products by a specific feature. He selects
"1024x768" as screen resolution and gets a list of products with the screen
resolution "1024x768". Now he wants to get only products that have the
screen resolution "1024x768" and "VGA cable".
This is quite comparable to the search and filtering mechanism you can find
at amazon.com.
*Problem:*
After some filtering steps, the products are quite similiar and share most
of the features BUT some features aren't available for all of these
products.
Is there a way to filter out all features that are available for all
products to get only a list of features that are available for some of
these products to be able to decrease the amount of products in the next
step?
*Example document:*
{ "segments": [ {
"id": 1,
"name": "Segment One",
"features": [
{
"id": 1,
"name": "Feature One"
},
{
"id": 2,
"name": "Feature Two"
}
]
},
{
"id": 2,
"name": "Segment Two",
"features": [
{
"id": 3,
"name": "Feature Three"
}, {
"id": 4,
"name": "Feature Four"
}
]
}
] }
*Current example query:*
{
"query": {
"filtered": {
"query": {
"match": "Monitor"
},
"filter": {
"and": [
{
"term": {
"segments.features.id": 3
}
}
]
}
}
},
"aggs": {
"features": {
"terms": {
"lang": "groovy",
"script": "strs = new ArrayList(); for (s in
doc['segments.features.id']) { strs.add(s.toString()); }; return strs;",
"exclude": "3"
}
}
}
}
Regards,
Jan
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