Support rollups and trees in the engine and gRPC server, and make tab…

…le attributes immutable (deephaven#3243)

* Implement engine support for rollups and trees based on partitioned tables
* Implement a gRPC API for manipulating rollups and trees, and subscribing to snapshots thereof
* Implement (as yet unsupported in the UI) capability to "expand all" rollups and trees
* Make table attributes immutable
* DataColumn.set* are removed
* We now have ImmutableConstant*ColumnSources, for single value constant columns
* RowRedirection now properly implements ChunkSource.WithPrev and FillUnordered
* WritableRowRedirection now properly implements ChunkSink
* Legacy rollup and tree snapshot code has been removed
* Legacy SmartKey and TableMap code has been removed

BenchmarkSupport/src/main/java/io/deephaven/benchmarking/BenchmarkTools.java

@@ -3,7 +3,6 @@
  */
 package io.deephaven.benchmarking;
 
-import io.deephaven.base.StringUtils;
 import io.deephaven.configuration.Configuration;
 import io.deephaven.configuration.DataDir;
 import io.deephaven.engine.context.ExecutionContext;
@@ -23,6 +22,7 @@
 import java.util.Arrays;
 import java.util.List;
 import java.util.Random;
+import java.util.stream.Collectors;
 
 /**
  * An entry point to get instances of {@link BenchmarkTableBuilder}s.
@@ -256,7 +256,7 @@ public static String stripName(String benchmark) {
     }
 
     public static String buildParameterString(BenchmarkParams params) {
-        return StringUtils.joinStrings(params.getParamsKeys().stream().map(params::getParam), ";");
+        return params.getParamsKeys().stream().map(params::getParam).collect(Collectors.joining(";"));
     }
 
     public static Path dataDir() {

BenchmarkSupport/src/main/java/io/deephaven/benchmarking/impl/PersistentBenchmarkTableBuilder.java

@@ -3,10 +3,12 @@
  */
 package io.deephaven.benchmarking.impl;
 
-import io.deephaven.base.StringUtils;
 import io.deephaven.benchmarking.BenchmarkTable;
 
-import java.util.*;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.LinkedHashSet;
+import java.util.Set;
 
 public class PersistentBenchmarkTableBuilder extends AbstractBenchmarkTableBuilder<PersistentBenchmarkTableBuilder> {
 
@@ -53,7 +55,7 @@ public BenchmarkTable build() {
 
         if (!missingGroupingColumns.isEmpty()) {
             throw new IllegalStateException("Grouping requested on the following nonexistant columns "
-                    + StringUtils.joinStrings(missingGroupingColumns, ", "));
+                    + String.join(", ", missingGroupingColumns));
         }
 
         // TODO (deephaven/deephaven-core/issues/147): Replace this with a Parquet-backed table, or delete this entirely

ClientSupport/ClientSupport.gradle

@@ -12,15 +12,6 @@ dependencies {
     implementation project(':log-factory')
     implementation project(':Configuration')
     implementation depCommonsLang3
-
-    testImplementation TestTools.projectDependency(project, 'Base')
-    testImplementation TestTools.projectDependency(project, 'engine-table')
-    testImplementation project(':extensions-csv')
-
-    testRuntimeOnly project(':log-to-slf4j')
-    testRuntimeOnly project(path: ':configs')
-    testRuntimeOnly project(path: ':test-configs')
-    Classpaths.inheritSlf4j(project, 'slf4j-simple', 'testRuntimeOnly')
 }
 
 spotless {