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// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
// Use of this source code is governed by a MIT-license.
// See http://olivere.mit-license.org/license.txt for details.
package elastic
// The has_parent filter accepts a query and a parent type.
// The query is executed in the parent document space,
// which is specified by the parent type.
// This filter return child documents which associated parents have matched.
// For more details, see
// http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/query-dsl-has-parent-filter.html
type HasParentFilter struct {
filter Filter
query Query
parentType string
filterName string
cache *bool
cacheKey string
innerHit *InnerHit
}
// NewHasParentFilter creates a new has_parent filter.
func NewHasParentFilter(parentType string) HasParentFilter {
f := HasParentFilter{
parentType: parentType,
}
return f
}
func (f HasParentFilter) Query(query Query) HasParentFilter {
f.query = query
return f
}
func (f HasParentFilter) Filter(filter Filter) HasParentFilter {
f.filter = filter
return f
}
func (f HasParentFilter) FilterName(filterName string) HasParentFilter {
f.filterName = filterName
return f
}
func (f HasParentFilter) Cache(cache bool) HasParentFilter {
f.cache = &cache
return f
}
func (f HasParentFilter) CacheKey(cacheKey string) HasParentFilter {
f.cacheKey = cacheKey
return f
}
func (f HasParentFilter) InnerHit(innerHit *InnerHit) HasParentFilter {
f.innerHit = innerHit
return f
}
// Source returns the JSON document for the filter.
func (f HasParentFilter) Source() interface{} {
// {
// "has_parent" : {
// "parent_type" : "blog",
// "query" : {
// "term" : {
// "tag" : "something"
// }
// }
// }
// }
source := make(map[string]interface{})
filter := make(map[string]interface{})
source["has_parent"] = filter
if f.query != nil {
filter["query"] = f.query.Source()
} else if f.filter != nil {
filter["filter"] = f.filter.Source()
}
filter["parent_type"] = f.parentType
if f.filterName != "" {
filter["_name"] = f.filterName
}
if f.cache != nil {
filter["_cache"] = *f.cache
}
if f.cacheKey != "" {
filter["_cache_key"] = f.cacheKey
}
if f.innerHit != nil {
filter["inner_hits"] = f.innerHit.Source()
}
return source
}
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