Revert "Revert "- Reduce usage of guava.""

4 files changed, 43 insertions, 53 deletions

diff --git a/model-evaluation/src/main/java/ai/vespa/models/evaluation/FunctionEvaluator.java b/model-evaluation/src/main/java/ai/vespa/models/evaluation/FunctionEvaluator.java
index 6af33e29e62..1d3da73a509 100644
--- a/model-evaluation/src/main/java/ai/vespa/models/evaluation/FunctionEvaluator.java
+++ b/model-evaluation/src/main/java/ai/vespa/models/evaluation/FunctionEvaluator.java
@@ -101,9 +101,11 @@ public class FunctionEvaluator {
     }
 
     public Tensor evaluate() {
-        for (Map.Entry<String, TensorType> argument : function.argumentTypes().entrySet()) {
-            checkArgument(argument.getKey(), argument.getValue());
-        }
+        function.argumentTypes().keySet().stream().sorted()
+                .forEach(name -> {
+                            var type = function.argumentTypes().get(name);
+                            checkArgument(name, type);
+                        });
         evaluated = true;
         evaluateOnnxModels();
         return function.getBody().evaluate(context).asTensor();
diff --git a/model-evaluation/src/main/java/ai/vespa/models/evaluation/LazyArrayContext.java b/model-evaluation/src/main/java/ai/vespa/models/evaluation/LazyArrayContext.java
index d030108a17a..81325740218 100644
--- a/model-evaluation/src/main/java/ai/vespa/models/evaluation/LazyArrayContext.java
+++ b/model-evaluation/src/main/java/ai/vespa/models/evaluation/LazyArrayContext.java
@@ -1,8 +1,7 @@
 // Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 package ai.vespa.models.evaluation;
 
-import com.google.common.collect.ImmutableMap;
-import com.google.common.collect.ImmutableSet;
+import com.yahoo.lang.MutableInteger;
 import com.yahoo.searchlib.rankingexpression.ExpressionFunction;
 import com.yahoo.searchlib.rankingexpression.Reference;
 import com.yahoo.searchlib.rankingexpression.evaluation.Context;
@@ -14,6 +13,7 @@ import com.yahoo.searchlib.rankingexpression.rule.CompositeNode;
 import com.yahoo.searchlib.rankingexpression.rule.ConstantNode;
 import com.yahoo.searchlib.rankingexpression.rule.ExpressionNode;
 import com.yahoo.searchlib.rankingexpression.rule.ReferenceNode;
+import com.yahoo.stream.CustomCollectors;
 import com.yahoo.tensor.Tensor;
 import com.yahoo.tensor.TensorType;
 
@@ -24,6 +24,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
+import java.util.stream.Collectors;
 
 /**
  * An array context supporting functions invocations implemented as lazy values.
@@ -151,16 +152,16 @@ public final class LazyArrayContext extends Context implements ContextIndex {
     private static class IndexedBindings {
 
         /** The mapping from variable name to index */
-        private final ImmutableMap<String, Integer> nameToIndex;
+        private final Map<String, Integer> nameToIndex;
 
         /** The names which needs to be bound externally when invoking this (i.e not constant or invocation */
-        private final ImmutableSet<String> arguments;
+        private final Set<String> arguments;
 
         /** The current values set */
         private final Value[] values;
 
         /** ONNX models indexed by rank feature that calls them */
-        private final ImmutableMap<String, OnnxModel> onnxModels;
+        private final Map<String, OnnxModel> onnxModels;
 
         /** The object instance which encodes "no value is set". The actual value of this is never used. */
         private static final Value missing = new DoubleValue(Double.NaN).freeze();
@@ -169,14 +170,14 @@ public final class LazyArrayContext extends Context implements ContextIndex {
         private Value missingValue = new DoubleValue(Double.NaN).freeze();
 
 
-        private IndexedBindings(ImmutableMap<String, Integer> nameToIndex,
+        private IndexedBindings(Map<String, Integer> nameToIndex,
                                 Value[] values,
-                                ImmutableSet<String> arguments,
-                                ImmutableMap<String, OnnxModel> onnxModels) {
-            this.nameToIndex = nameToIndex;
+                                Set<String> arguments,
+                                Map<String, OnnxModel> onnxModels) {
+            this.nameToIndex = Map.copyOf(nameToIndex);
             this.values = values;
             this.arguments = arguments;
-            this.onnxModels = onnxModels;
+            this.onnxModels = Map.copyOf(onnxModels);
         }
 
         /**
@@ -195,16 +196,14 @@ public final class LazyArrayContext extends Context implements ContextIndex {
             Map<String, OnnxModel> onnxModelsInUse = new HashMap<>();
             extractBindTargets(function.getBody().getRoot(), referencedFunctions, bindTargets, arguments, onnxModels, onnxModelsInUse);
 
-            this.onnxModels = ImmutableMap.copyOf(onnxModelsInUse);
-            this.arguments = ImmutableSet.copyOf(arguments);
+            this.onnxModels = Map.copyOf(onnxModelsInUse);
+            this.arguments = Set.copyOf(arguments);
             values = new Value[bindTargets.size()];
             Arrays.fill(values, missing);
 
-            int i = 0;
-            ImmutableMap.Builder<String, Integer> nameToIndexBuilder = new ImmutableMap.Builder<>();
-            for (String variable : bindTargets)
-                nameToIndexBuilder.put(variable, i++);
-            nameToIndex = nameToIndexBuilder.build();
+            MutableInteger nextIndex = new MutableInteger(0);
+            nameToIndex = Map.copyOf(bindTargets.stream()
+                    .collect(CustomCollectors.toLinkedMap(name -> name, name -> nextIndex.next())));
 
             // 2. Bind the bind targets
             for (Constant constant : constants) {
@@ -252,8 +251,7 @@ public final class LazyArrayContext extends Context implements ContextIndex {
                 bindTargets.add(node.toString());
                 arguments.add(node.toString());
             }
-            else if (node instanceof CompositeNode) {
-                CompositeNode cNode = (CompositeNode)node;
+            else if (node instanceof CompositeNode cNode) {
                 for (ExpressionNode child : cNode.children())
                     extractBindTargets(child, functions, bindTargets, arguments, onnxModels, onnxModelsInUse);
             }
@@ -291,16 +289,14 @@ public final class LazyArrayContext extends Context implements ContextIndex {
         }
 
         private Optional<String> getArgument(ExpressionNode node) {
-            if (node instanceof ReferenceNode) {
-                ReferenceNode reference = (ReferenceNode) node;
+            if (node instanceof ReferenceNode reference) {
                 if (reference.getArguments().size() > 0) {
                     if (reference.getArguments().expressions().get(0) instanceof ConstantNode) {
                         ExpressionNode constantNode = reference.getArguments().expressions().get(0);
                         return Optional.of(stripQuotes(constantNode.toString()));
                     }
-                    if (reference.getArguments().expressions().get(0) instanceof ReferenceNode) {
-                        ReferenceNode referenceNode = (ReferenceNode) reference.getArguments().expressions().get(0);
-                        return Optional.of(referenceNode.getName());
+                    if (reference.getArguments().expressions().get(0) instanceof ReferenceNode refNode) {
+                        return Optional.of(refNode.getName());
                     }
                 }
             }
@@ -316,20 +312,17 @@ public final class LazyArrayContext extends Context implements ContextIndex {
         }
 
         private boolean isFunctionReference(ExpressionNode node) {
-            if ( ! (node instanceof ReferenceNode)) return false;
-            ReferenceNode reference = (ReferenceNode)node;
+            if ( ! (node instanceof ReferenceNode reference)) return false;
             return reference.getName().equals("rankingExpression") && reference.getArguments().size() == 1;
         }
 
         private boolean isOnnx(ExpressionNode node) {
-            if ( ! (node instanceof ReferenceNode)) return false;
-            ReferenceNode reference = (ReferenceNode) node;
+            if ( ! (node instanceof ReferenceNode reference)) return false;
             return reference.getName().equals("onnx") || reference.getName().equals("onnxModel");
         }
 
         private boolean isConstant(ExpressionNode node) {
-            if ( ! (node instanceof ReferenceNode)) return false;
-            ReferenceNode reference = (ReferenceNode)node;
+            if ( ! (node instanceof ReferenceNode reference)) return false;
             return reference.getName().equals("constant") && reference.getArguments().size() == 1;
         }
 
diff --git a/model-evaluation/src/main/java/ai/vespa/models/evaluation/Model.java b/model-evaluation/src/main/java/ai/vespa/models/evaluation/Model.java
index 1ecec4108a3..ffcfb5e9379 100644
--- a/model-evaluation/src/main/java/ai/vespa/models/evaluation/Model.java
+++ b/model-evaluation/src/main/java/ai/vespa/models/evaluation/Model.java
@@ -2,15 +2,16 @@
 package ai.vespa.models.evaluation;
 
 import com.yahoo.api.annotations.Beta;
-import com.google.common.collect.ImmutableMap;
 import com.yahoo.searchlib.rankingexpression.ExpressionFunction;
 import com.yahoo.searchlib.rankingexpression.evaluation.ContextIndex;
 import com.yahoo.searchlib.rankingexpression.evaluation.ExpressionOptimizer;
+import com.yahoo.stream.CustomCollectors;
 import com.yahoo.tensor.TensorType;
 
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
@@ -35,10 +36,10 @@ public class Model {
     private final List<ExpressionFunction> publicFunctions;
 
     /** Instances of each usage of the above function, where variables (if any) are replaced by their bindings */
-    private final ImmutableMap<FunctionReference, ExpressionFunction> referencedFunctions;
+    private final Map<FunctionReference, ExpressionFunction> referencedFunctions;
 
     /** Context prototypes, indexed by function name (as all invocations of the same function share the same context prototype) */
-    private final ImmutableMap<String, LazyArrayContext> contextPrototypes;
+    private final Map<String, LazyArrayContext> contextPrototypes;
 
     private final ExpressionOptimizer expressionOptimizer = new ExpressionOptimizer();
 
@@ -46,9 +47,9 @@ public class Model {
     public Model(String name, Collection<ExpressionFunction> functions) {
         this(name,
              functions.stream().collect(Collectors.toMap(f -> FunctionReference.fromName(f.getName()), f -> f)),
-             Collections.emptyMap(),
-             Collections.emptyList(),
-             Collections.emptyList());
+             Map.of(),
+             List.of(),
+             List.of());
     }
 
     Model(String name,
@@ -59,7 +60,7 @@ public class Model {
         this.name = name;
 
         // Build context and add missing function arguments (missing because it is legal to omit scalar type arguments)
-        ImmutableMap.Builder<String, LazyArrayContext> contextBuilder = new ImmutableMap.Builder<>();
+        Map<String, LazyArrayContext> contextBuilder = new LinkedHashMap<>();
         for (Map.Entry<FunctionReference, ExpressionFunction> function : functions.entrySet()) {
             try {
                 LazyArrayContext context = new LazyArrayContext(function.getValue(), referencedFunctions, constants, onnxModels, this);
@@ -92,19 +93,14 @@ public class Model {
                 throw new IllegalArgumentException("Could not prepare an evaluation context for " + function, e);
             }
         }
-        this.contextPrototypes = contextBuilder.build();
+        this.contextPrototypes = Map.copyOf(contextBuilder);
         this.functions = List.copyOf(functions.values());
         this.publicFunctions = functions.values().stream()
                 .filter(f -> !f.getName().startsWith(INTERMEDIATE_OPERATION_FUNCTION_PREFIX)).toList();
 
         // Optimize functions
-        ImmutableMap.Builder<FunctionReference, ExpressionFunction> functionsBuilder = new ImmutableMap.Builder<>();
-        for (Map.Entry<FunctionReference, ExpressionFunction> function : referencedFunctions.entrySet()) {
-            ExpressionFunction optimizedFunction = optimize(function.getValue(),
-                                                            contextPrototypes.get(function.getKey().functionName()));
-            functionsBuilder.put(function.getKey(), optimizedFunction);
-        }
-        this.referencedFunctions = functionsBuilder.build();
+        this.referencedFunctions = Map.copyOf(referencedFunctions.entrySet().stream()
+                .collect(CustomCollectors.toLinkedMap(f -> f.getKey(), f -> optimize(f.getValue(), contextPrototypes.get(f.getKey().functionName())))));
     }
 
     /** Returns an optimized version of the given function */
@@ -142,7 +138,7 @@ public class Model {
     }
 
     /** Returns an immutable map of the referenced function instances of this */
-    Map<FunctionReference, ExpressionFunction> referencedFunctions() { return referencedFunctions; }
+    Map<FunctionReference, ExpressionFunction> referencedFunctions() { return Map.copyOf(referencedFunctions); }
 
     /** Returns the given referred function, or throws a IllegalArgumentException if it does not exist */
     ExpressionFunction requireReferencedFunction(FunctionReference reference) {
diff --git a/model-evaluation/src/main/java/ai/vespa/models/evaluation/ModelsEvaluator.java b/model-evaluation/src/main/java/ai/vespa/models/evaluation/ModelsEvaluator.java
index 88843fd99ab..40a503e0212 100644
--- a/model-evaluation/src/main/java/ai/vespa/models/evaluation/ModelsEvaluator.java
+++ b/model-evaluation/src/main/java/ai/vespa/models/evaluation/ModelsEvaluator.java
@@ -2,7 +2,6 @@
 package ai.vespa.models.evaluation;
 
 import com.yahoo.api.annotations.Beta;
-import com.google.common.collect.ImmutableMap;
 import com.yahoo.component.annotation.Inject;
 import com.yahoo.component.AbstractComponent;
 import com.yahoo.filedistribution.fileacquirer.FileAcquirer;
@@ -23,7 +22,7 @@ import java.util.Map;
 @Beta
 public class ModelsEvaluator extends AbstractComponent {
 
-    private final ImmutableMap<String, Model> models;
+    private final Map<String, Model> models;
 
     @Inject
     public ModelsEvaluator(RankProfilesConfig config,
@@ -43,7 +42,7 @@ public class ModelsEvaluator extends AbstractComponent {
     }
 
     public ModelsEvaluator(Map<String, Model> models) {
-        this.models = ImmutableMap.copyOf(models);
+        this.models = Map.copyOf(models);
     }
 
     /** Returns the models of this as an immutable map */