我正在尝试在 Nest ElasticSearch 中实现以下 SQL 伪代码。
我没有在 Nest 文档中找到与此问题匹配的任何类似 StackOverflow 问题。感谢您提供的任何指导。
select *
from curator..published
where accountId = 10
and (
(publishStatusId = 3 and scheduledDT > '2015-09-01')
or
(publishStatusId = 4 and publishedDT > '2015-09-01')
)
我创建了以下 ElasticSearch 查询，但无法将其成功转换为 Nest 语法。
GET curator/published/_search
{
"query": {
"filtered": {
"filter": {
"bool": {
"must": [
{
"term": {
"accountID": 1781
}
}
],
"should": [
{
"bool": {
"must": [
{
"term": {
"publishStatusID": 4
}
},
{
"range": {
"publishedDT": {
"gte": "2015-09-01T00:00:00.000"
}
}
}
]
}
},
{
"bool": {
"must": [
{
"term": {
"publishStatusID": 3
}
},
{
"range": {
"scheduleDT": {
"gte": "2015-09-01T00:00:00.000"
}
}
}
]
}
}
]
}
}
}
}
}
此 Nest 查询通过了语法检查，但只有最后一个“应该”条件出现在生成的 ElasticSearch 查询中。
var results = this.Client.Count<Data>(c => c
.Query(q => q
.Filtered(f1 => f1
.Filter(f2 => f2
.Bool(b => b
.Must(
f => f.Term(FieldName.AccountID, "10")
)
.Should(s => s
.Bool(b1 => b1
.Must(
f => f.Term(FieldName.PublishStatusID, "3"),
f => f.Range(m => m.OnField(FieldName.ScheduleDT).GreaterOrEquals("2015-09-01"))
)
)
)
.Should(s => s
.Bool(b1 => b1
.Must(
f => f.Term(FieldName.PublishStatusID, "4"),
f => f.Range(m => m.OnField(FieldName.PublishedDT).GreaterOrEquals("2015-09-01"))
)
)
)
)
)
)
)
);
此 Nest 查询与原始 ElasticSearch 查询更匹配，但在第二个 Bool 上引发以下错误:错误 51 'Nest.FilterContainer' 不包含 'Bool' 的定义并且没有扩展方法 'Bool' 接受第一个参数可以找到“Nest.FilterContainer”类型(您是否缺少 using 指令或程序集引用？)
var results = this.Client.Count<Data>(c => c
.Query(q => q
.Filtered(f1 => f1
.Filter(f2 => f2
.Bool(b => b
.Must(
f => f.Term(FieldName.AccountID, AccountID)
)
.Should(s => s
.Bool(b1 => b1
.Must(
f => f.Term(FieldName.PublishStatusID, "3"),
f => f.Range(m => m.OnField(FieldName.ScheduleDT).GreaterOrEquals("2015-09-01"))
)
)
.Bool(b2 => b2
.Must(
f => f.Term(FieldName.PublishStatusID, "4"),
f => f.Range(m => m.OnField(FieldName.PublishedDT).GreaterOrEquals("2015-09-01"))
)
)
)
)
)
)
)
);
最佳答案
您的第一个查询不远，只是传递给第二个 Should() 的表达式需要是另一个传递给第一个 Should() 的表达式(Should() 采用一个 params Func[] 过滤器)。这是查询(我在这里使用 dynamic 作为通用类型):
void Main()
{
var settings = new ConnectionSettings(new Uri("http://localhost:9200"));
var connection = new InMemoryConnection(settings);
var client = new ElasticClient(connection: connection);
var docs = client.Count<dynamic>(c => c
.Query(q => q
.Filtered(f1 => f1
.Filter(f2 => f2
.Bool(b => b
.Must(
f => f.Term(FieldName.AccountID, "10")
)
.Should(s => s
.Bool(b1 => b1
.Must(
f => f.Term(FieldName.PublishStatusID, "3"),
f => f.Range(m => m.OnField(FieldName.ScheduleDT).GreaterOrEquals("2015-09-01"))
)
),
s => s
.Bool(b1 => b1
.Must(
f => f.Term(FieldName.PublishStatusID, "4"),
f => f.Range(m => m.OnField(FieldName.PublishedDT).GreaterOrEquals("2015-09-01"))
)
)
)
)
)
)
)
);
Console.WriteLine(Encoding.UTF8.GetString(docs.RequestInformation.Request));
}
public static class FieldName
{
public static string AccountID = "AccountID";
public static string ScheduleDT = "ScheduleDT";
public static string PublishedDT = "PublishedDT";
public static string PublishStatusID = "PublishStatusID";
}
产生
{
"query": {
"filtered": {
"filter": {
"bool": {
"must": [
{
"term": {
"AccountID": "10"
}
}
],
"should": [
{
"bool": {
"must": [
{
"term": {
"PublishStatusID": "3"
}
},
{
"range": {
"ScheduleDT": {
"gte": "2015-09-01"
}
}
}
]
}
},
{
"bool": {
"must": [
{
"term": {
"PublishStatusID": "4"
}
},
{
"range": {
"PublishedDT": {
"gte": "2015-09-01"
}
}
}
]
}
}
]
}
}
}
}
}
这与您上面的查询 DSL 匹配
关于c# - 需要帮助在 Nest 查询中实现多个 Or 条件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/32855343/