我在Elasticsearch1.5.2中有类似
的文档POST /test/prod
{
"title": "product 1, type1",
"category": "category1",
"price in €": 1.67,
"price in €/kg": 3.35,
"weight in kg": 0.500
}
POST /test/prod
{
"title": "product 1, type2",
"category": "category1",
"price in €": 1.85,
"price in €/kg": 1.85,
"weight in kg": 1
}
POST /test/prod
{
"title": "product 1, type3",
"category": "category1",
"price in €": 0.79,
"price in €/kg": 4.7,
"weight in kg": 0.168
}
POST /test/prod
{
"title": "product 1, type4",
"category": "category1",
"price in €": 2.15,
"price in €/kg": 4.3,
"weight in kg": 0.5
}
我想以最便宜的价格购买1.2公斤的产品1，即使是使用两种或三种产品的组合1.同时，以欧元/公斤为单位的价格总和必须等于或大于超过1.200公斤。在我的情况下，我必须得到产品1，type1和产品1，type2。
我的查询看起来像
POST test/_search?search_type=count
{
"aggs" : {
"product 1" : {
"filter" : {
"query":{ "query_string": {
"query": "title:product 1"
}
}},
"aggs" : {
"minprice": {
"top_hits": {
"sort": [
{
"price in €/kg": {
"order": "asc"
}
}
], "size":4
}
}
}
}} }
我的文件按字段价格排列，单位为€/ kg。现在，我必须根据1.2千克的重量以千克为单位对查询结果进行排序和排序。例如，
3 product 1, Type1 (0.5kg*3)> 1.2 kg.
2 product 1, Type2 (1kg*2)>1.2kg.
8 product 1,Type3 (0.168*8)>1.2kg.
3 product 1, Type 4 (0.5*3)>1.2 kg.
product 1, Type1 + product 1, Type2 (1+0.5)>1.2
product 1, Type2 + 3 product 1, Type3 (1+(0.168*3))> 1.2
....
....
最后，我想保留所有这些组合中最低价格的最终结果。