Implement Freeze and Unfreeze API

docs/common-options/date-math/date-math-expressions.asciidoc

@@ -83,14 +83,28 @@ anchor will be an actual `DateTime`, even after a serialization/deserialization
 [source,csharp]
 ----
 var date = new DateTime(2015, 05, 05);
-Expect("2015-05-05T00:00:00")
-    .WhenSerializing<Nest.DateMath>(date)
-    .AssertSubject(dateMath => ((IDateMath)dateMath)
-        .Anchor.Match(
-            d => d.Should().Be(date),
-            s => s.Should().BeNull()
-        )
-    );
+----
+
+will serialize to
+
+[source,javascript]
+----
+"2015-05-05T00:00:00"
+----
+
+When the `DateTime` is local or UTC, the time zone information is included.
+For example, for a UTC `DateTime`
+
+[source,csharp]
+----
+var utcDate = new DateTime(2015, 05, 05, 0, 0, 0, DateTimeKind.Utc);
+----
+
+will serialize to
+
+[source,javascript]
+----
+"2015-05-05T00:00:00Z"
 ----
 
 ==== Complex expressions

docs/query-dsl.asciidoc

@@ -275,6 +275,8 @@ Specialized types of queries that do not fit into other groups
 
 * <<script-query-usage,Script Query Usage>>
 
+* <<script-score-query-usage,Script Score Query Usage>>
+
 See the Elasticsearch documentation on {ref_current}/specialized-queries.html[Specialized queries] for more details.
 
 :includes-from-dirs: query-dsl/specialized
@@ -287,6 +289,8 @@ include::query-dsl/specialized/percolate/percolate-query-usage.asciidoc[]
 
 include::query-dsl/specialized/script/script-query-usage.asciidoc[]
 
+include::query-dsl/specialized/script-score/script-score-query-usage.asciidoc[]
+
 [[span-queries]]
 == Span queries
 

docs/query-dsl/compound/function-score/function-score-query-usage.asciidoc

@@ -29,15 +29,36 @@ q
     .MaxBoost(20.0)
     .MinScore(1.0)
     .Functions(f => f
-        .Exponential(b => b.Field(p => p.NumberOfCommits).Decay(0.5).Origin(1.0).Scale(0.1).Weight(2.1))
+        .Exponential(b => b
+            .Field(p => p.NumberOfCommits)
+            .Decay(0.5)
+            .Origin(1.0)
+            .Scale(0.1)
+            .Weight(2.1)
+            .Filter(fi => fi
+                .Range(r => r
+                    .Field(p => p.NumberOfContributors)
+                    .GreaterThan(10)
+                )
+            )
+        )
         .GaussDate(b => b.Field(p => p.LastActivity).Origin(DateMath.Now).Decay(0.5).Scale("1d"))
-        .LinearGeoLocation(b =>
-            b.Field(p => p.LocationPoint).Origin(new GeoLocation(70, -70)).Scale(Distance.Miles(1)).MultiValueMode(MultiValueMode.Average))
+        .LinearGeoLocation(b => b
+            .Field(p => p.LocationPoint)
+            .Origin(new GeoLocation(70, -70))
+            .Scale(Distance.Miles(1))
+            .MultiValueMode(MultiValueMode.Average)
+        )
         .FieldValueFactor(b => b.Field(p => p.NumberOfContributors).Factor(1.1).Missing(0.1).Modifier(FieldValueFactorModifier.Square))
         .RandomScore(r => r.Seed(1337).Field("_seq_no"))
         .RandomScore(r => r.Seed("randomstring").Field("_seq_no"))
         .Weight(1.0)
-        .ScriptScore(s => s.Script(ss => ss.Source("Math.log(2 + doc['numberOfCommits'].value)")))
+        .ScriptScore(s => s
+            .Script(ss => ss
+                .Source("Math.log(2 + doc['numberOfCommits'].value)")
+            )
+            .Weight(2)
+        )
     )
 )
 ----
@@ -57,7 +78,19 @@ new FunctionScoreQuery()
     MinScore = 1.0,
     Functions = new List<IScoreFunction>
     {
-        new ExponentialDecayFunction { Origin = 1.0, Decay = 0.5, Field = Field<Project>(p => p.NumberOfCommits), Scale = 0.1, Weight = 2.1 },
+        new ExponentialDecayFunction
+        {
+            Origin = 1.0,
+            Decay = 0.5,
+            Field = Field<Project>(p => p.NumberOfCommits),
+            Scale = 0.1,
+            Weight = 2.1,
+            Filter = new NumericRangeQuery
+            {
+                Field = Field<Project>(f => f.NumberOfContributors),
+                GreaterThan = 10
+            }
+        },
         new GaussDateDecayFunction
             { Origin = DateMath.Now, Field = Field<Project>(p => p.LastActivity), Decay = 0.5, Scale = TimeSpan.FromDays(1) },
         new LinearGeoDecayFunction
@@ -72,7 +105,7 @@ new FunctionScoreQuery()
         new RandomScoreFunction { Seed = 1337, Field = "_seq_no" },
         new RandomScoreFunction { Seed = "randomstring", Field = "_seq_no" },
         new WeightFunction { Weight = 1.0 },
-        new ScriptScoreFunction { Script = new InlineScript("Math.log(2 + doc['numberOfCommits'].value)") }
+        new ScriptScoreFunction { Script = new InlineScript("Math.log(2 + doc['numberOfCommits'].value)"), Weight = 2.0 }
     }
 }
 ----
@@ -94,7 +127,14 @@ new FunctionScoreQuery()
             "decay": 0.5
           }
         },
-        "weight": 2.1
+        "weight": 2.1,
+        "filter": {
+          "range": {
+            "numberOfContributors": {
+              "gt": 10.0
+            }
+          }
+        }
       },
       {
         "gauss": {
@@ -145,7 +185,8 @@ new FunctionScoreQuery()
           "script": {
             "source": "Math.log(2 + doc['numberOfCommits'].value)"
           }
-        }
+        },
+        "weight": 2.0
       }
     ],
     "max_boost": 20.0,

docs/query-dsl/specialized/script-score/script-score-query-usage.asciidoc

@@ -0,0 +1,102 @@
+:ref_current: https://www.elastic.co/guide/en/elasticsearch/reference/7.0
+
+:github: https://github.com/elastic/elasticsearch-net
+
+:nuget: https://www.nuget.org/packages
+
+////
+IMPORTANT NOTE
+==============
+This file has been generated from https://github.com/elastic/elasticsearch-net/tree/master/src/Tests/Tests/QueryDsl/Specialized/ScriptScore/ScriptScoreQueryUsageTests.cs. 
+If you wish to submit a PR for any spelling mistakes, typos or grammatical errors for this file,
+please modify the original csharp file found at the link and submit the PR with that change. Thanks!
+////
+
+[[script-score-query-usage]]
+=== Script Score Query Usage
+
+A query allowing you to modify the score of documents that are retrieved by a query.
+This can be useful if, for example, a score function is computationally expensive and
+it is sufficient to compute the score on a filtered set of documents.
+
+See the Elasticsearch documentation on {ref_current}/query-dsl-script-score-query.html[script_score query] for more details.
+
+==== Fluent DSL example
+
+[source,csharp]
+----
+q
+.ScriptScore(sn => sn
+    .Name("named_query")
+    .Boost(1.1)
+    .Query(qq => qq
+        .Range(r => r
+            .Field(f => f.NumberOfCommits)
+            .GreaterThan(50)
+        )
+    )
+    .Script(s => s
+        .Source(_scriptScoreSource)
+        .Params(p => p
+            .Add("origin", 100)
+            .Add("scale", 10)
+            .Add("decay", 0.5)
+            .Add("offset", 0)
+        )
+    )
+)
+----
+
+==== Object Initializer syntax example
+
+[source,csharp]
+----
+new ScriptScoreQuery
+{
+    Name = "named_query",
+    Boost = 1.1,
+    Query = new NumericRangeQuery
+    {
+        Field = Infer.Field<Project>(f => f.NumberOfCommits),
+        GreaterThan = 50
+    },
+    Script = new InlineScript(_scriptScoreSource)
+    {
+        Params = new Dictionary<string, object>
+        {
+            { "origin", 100 },
+            { "scale", 10 },
+            { "decay", 0.5 },
+            { "offset", 0 }
+        }
+    },
+}
+----
+
+[source,javascript]
+.Example json output
+----
+{
+  "script_score": {
+    "_name": "named_query",
+    "boost": 1.1,
+    "query": {
+      "range": {
+        "numberOfCommits": {
+          "gt": 50.0
+        }
+      }
+    },
+    "script": {
+      "source": "decayNumericLinear(params.origin, params.scale, params.offset, params.decay, doc['numberOfCommits'].value)",
+      "params": {
+        "origin": 100,
+        "scale": 10,
+        "decay": 0.5,
+        "offset": 0
+      }
+    }
+  }
+}
+----
+

src/CodeGeneration/ApiGenerator/Configuration/CodeConfiguration.cs

@@ -22,8 +22,6 @@ public static class CodeConfiguration
 			"ml.set_upgrade_mode.json",
 			"ml.find_file_structure.json",
 			"monitoring.bulk.json",
-			"indices.freeze.json",
-			"indices.unfreeze.json",
 
 			"ccr.follow_info.json",
 			"ccr.forget_follower.json"

src/CodeGeneration/ApiGenerator/Configuration/Overrides/GlobalOverrides.cs

@@ -40,7 +40,8 @@ public class GlobalOverrides : EndpointOverridesBase
 			"copy_settings", //this still needs a PR?
 			"source", // allows the body to be specified as a request param, we do not want to advertise this with a strongly typed method
 			"timestamp",
-			"_source_include", "_source_exclude" // can be removed once https://github.com/elastic/elasticsearch/pull/41439 is in
+			"_source_include", "_source_exclude", // can be removed once https://github.com/elastic/elasticsearch/pull/41439 is in
+			"track_total_hits"
 		};
 	}
 }

src/CodeGeneration/DocGenerator/StringExtensions.cs

@@ -114,7 +114,8 @@ public static class StringExtensions
 										new []{ new [] {8.2, 18.2}, new [] {8.2, -18.8}, new [] {-8.8, -10.8}, new [] {8.8, 18.2}}
 									}"
 			},
-			{ "ProjectFilterExpectedJson", "new {term = new {type = new {value = \"project\"}}}" }
+			{ "ProjectFilterExpectedJson", "new {term = new {type = new {value = \"project\"}}}" },
+			{ "_scriptScoreSource", "\"decayNumericLinear(params.origin, params.scale, params.offset, params.decay, doc['numberOfCommits'].value)\""}
 		};
 
 		private static readonly Regex LeadingSpacesAndAsterisk = new Regex(@"^(?<value>[ \t]*\*\s?).*", RegexOptions.Compiled);
@@ -213,7 +214,7 @@ public static string RemoveNumberOfLeadingTabsOrSpacesAfterNewline(this string i
 
 		public static string[] SplitOnNewLines(this string input, StringSplitOptions options) => input.Split(new[] { "\r\n", "\n" }, options);
 
-		public static bool TryGetJsonForAnonymousType(this string anonymousTypeString, out string json)
+		public static bool TryGetJsonForExpressionSyntax(this string anonymousTypeString, out string json)
 		{
 			json = null;
 

src/CodeGeneration/DocGenerator/SyntaxNodeExtensions.cs

@@ -72,11 +72,10 @@ public static bool TryGetJsonForSyntaxNode(this SyntaxNode node, out string json
 			json = null;
 
 			// find the first anonymous object or new object expression
-			var creationExpressionSyntax = node.DescendantNodes()
-				.FirstOrDefault(n => n is AnonymousObjectCreationExpressionSyntax || n is ObjectCreationExpressionSyntax);
+			var syntax = node.DescendantNodes()
+				.FirstOrDefault(n => n is AnonymousObjectCreationExpressionSyntax || n is ObjectCreationExpressionSyntax || n is LiteralExpressionSyntax);
 
-			return creationExpressionSyntax != null &&
-				creationExpressionSyntax.ToFullString().TryGetJsonForAnonymousType(out json);
+			return syntax != null && syntax.ToFullString().TryGetJsonForExpressionSyntax(out json);
 		}
 
 		/// <summary>