Filter Creation - elasticsearch

Question

So after much experimentation I have found that the syntax I needed to filter products based on their specs is as follows
{
"post_filter": {
"bool": {
"filter": [{
"nested": {
"path": "productSpecification",
"query": {
"bool": {
"filter": [{
"term": {
"productSpecification.name": "Brand"
}
},
{
"terms": {
"productSpecification.value": [
"Brand1"
]
}
}
]
}
}
}
},
{
"nested": {
"path": "productSpecification",
"query": {
"bool": {
"filter": [{
"term": {
"productSpecification.name": "Guarantee"
}
},
{
"terms": {
"productSpecification.value": [
"3 years"
]
}
}
]
}
}
}
}
]
}
}
}
I'm now experimenting with creating a QueryContainer function to build this based on the selected name/values, If anyone can give me a point in the right direction on this that would be much appreciated.
Thanks

Answer 1

Ok I am now building a query from nest that works but is a bit messier than the DSL query above (not sure if someone can spot what Im doing below that makes it have some unnecessary bool filters
Here is my nest syntax
.PostFilter(pf => FilterTest(elasticParams,pf))
private static QueryContainer FilterTest(ElasticParams elasticParams, QueryContainerDescriptor<Product>q) => q
.Bool(b => b
.Filter(fi => FilterSelected(elasticParams, fi)));
private static QueryContainer FilterSelected2(ElasticParams elasticParams, QueryContainerDescriptor<Product> q) =>
elasticParams.Filters.Aggregate(new QueryContainer(), (c, s) => c && +q.Nested(n => n
.Path(p => p.ProductSpecification)
.Query(qq => qq
.Bool(bo => bo
.Filter(fi => fi
.Term(tt => tt
.Field(a => a.ProductSpecification.Suffix("name"))
.Value(s.name)) && fi
.Terms(ttt => ttt
.Field(fff => fff.ProductSpecification.Suffix("value"))
.Terms(s.Values))
)))));
As mentioned before this is filters as I would want however it DSL that it outputs is rather fugly as can be seen below
{
"post_filter": {
"bool": {
"filter": [{
"bool": {
"filter": [{
"nested": {
"query": {
"bool": {
"filter": [{
"bool": {
"must": [{
"term": {
"productSpecification.name": {
"value": "Brand"
}
}
}, {
"terms": {
"productSpecification.value": ["Brand1", "Brand2"]
}
}]
}
}]
}
},
"path": "productSpecification"
}
}, {
"nested": {
"query": {
"bool": {
"filter": [{
"bool": {
"must": [{
"term": {
"productSpecification.name": {
"value": "Guarantee"
}
}
}, {
"terms": {
"productSpecification.value": ["3 years"]
}
}]
}
}]
}
},
"path": "productSpecification"
}
}]
}
}]
}
}
}