Refactor: Move evaluation, converter, transformer, and util classes

- Move evaluation core classes (Request, Response, Evaluator) to spring-ai-commons.
- Move chat-specific evaluators (FactChecking, Relevancy) to spring-ai-client-chat#evaluation package.
- Move OutputConverter implementations and related classes to spring-ai-model#converter package.
- Move MetadataEnricher transformer classes to spring-ai-model#transformer package.
- Move PromptAssert utility to spring-ai-rag#util package.
- Update relevant pom.xml files and adjust imports in affected classes.
- Document class movements in upgrade-notes.adoc for M8 release.

This refactoring improves module organization and separation of concerns.

Signed-off-by: Mark Pollack <mark.pollack@broadcom.com>

Author: markpollack

models/spring-ai-openai/src/test/java/org/springframework/ai/openai/transformer/MetadataTransformerIT.java

@@ -24,8 +24,8 @@
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.condition.EnabledIfEnvironmentVariable;
 
-import org.springframework.ai.chat.transformer.KeywordMetadataEnricher;
-import org.springframework.ai.chat.transformer.SummaryMetadataEnricher;
+import org.springframework.ai.model.transformer.KeywordMetadataEnricher;
+import org.springframework.ai.model.transformer.SummaryMetadataEnricher;
 import org.springframework.ai.document.DefaultContentFormatter;
 import org.springframework.ai.document.Document;
 import org.springframework.ai.openai.OpenAiChatModel;

spring-ai-client-chat/pom.xml

@@ -73,12 +73,6 @@
 			<artifactId>spring-context</artifactId>
 		</dependency>
 
-
-		<dependency>
-			<groupId>org.springframework</groupId>
-			<artifactId>spring-messaging</artifactId>
-		</dependency>
-
 		<dependency>
 			<groupId>com.knuddels</groupId>
 			<artifactId>jtokkit</artifactId>
@@ -91,22 +85,6 @@
 			<version>${jsonschema.version}</version>
 		</dependency>
 
-		<dependency>
-			<groupId>com.github.victools</groupId>
-			<artifactId>jsonschema-module-jackson</artifactId>
-			<version>${jsonschema.version}</version>
-		</dependency>
-
-		<dependency>
-			<groupId>com.fasterxml.jackson.core</groupId>
-			<artifactId>jackson-databind</artifactId>
-		</dependency>
-
-		<dependency>
-			<groupId>com.fasterxml.jackson.datatype</groupId>
-			<artifactId>jackson-datatype-jsr310</artifactId>
-		</dependency>
-
 		<dependency>
 			<groupId>org.jetbrains.kotlin</groupId>
 			<artifactId>kotlin-stdlib</artifactId>

spring-ai-client-chat/src/main/java/org/springframework/ai/evaluation/FactCheckingEvaluator.java renamed to spring-ai-client-chat/src/main/java/org/springframework/ai/chat/evaluation/FactCheckingEvaluator.java

@@ -14,11 +14,14 @@
  * limitations under the License.
  */
 
-package org.springframework.ai.evaluation;
+package org.springframework.ai.chat.evaluation;
 
 import java.util.Collections;
 
 import org.springframework.ai.chat.client.ChatClient;
+import org.springframework.ai.evaluation.EvaluationRequest;
+import org.springframework.ai.evaluation.EvaluationResponse;
+import org.springframework.ai.evaluation.Evaluator;
 
 /**
  * Implementation of {@link Evaluator} used to evaluate the factual accuracy of Large

spring-ai-client-chat/src/main/java/org/springframework/ai/evaluation/RelevancyEvaluator.java renamed to spring-ai-client-chat/src/main/java/org/springframework/ai/chat/evaluation/RelevancyEvaluator.java

@@ -14,11 +14,14 @@
  * limitations under the License.
  */
 
-package org.springframework.ai.evaluation;
+package org.springframework.ai.chat.evaluation;
 
 import java.util.Collections;
 
 import org.springframework.ai.chat.client.ChatClient;
+import org.springframework.ai.evaluation.EvaluationRequest;
+import org.springframework.ai.evaluation.EvaluationResponse;
+import org.springframework.ai.evaluation.Evaluator;
 
 public class RelevancyEvaluator implements Evaluator {
 

spring-ai-client-chat/src/main/java/org/springframework/ai/evaluation/EvaluationRequest.java renamed to spring-ai-commons/src/main/java/org/springframework/ai/evaluation/EvaluationRequest.java

@@ -200,6 +200,23 @@ QuestionAnswerAdvisor newAdvisor = QuestionAnswerAdvisor.builder(vectorStore)
 
 * The `PromptTemplate` API has been redesigned to support a more flexible and extensible way of templating prompts, relying on a new `TemplateRenderer` API. As part of this change, the `getInputVariables()` and `validate()` methods have been deprecated and will throw an `UnsupportedOperationException` if called. Any logic specific to a template engine should be available through the `TemplateRenderer` API.
 
+=== Class Package Refactoring
+
+Several classes have been moved to different modules and packages for better organization:
+
+* Evaluation classes moved:
+** `org.springframework.ai.evaluation.FactCheckingEvaluator` moved to `org.springframework.ai.chat.evaluation` package within `spring-ai-client-chat`.
+** `org.springframework.ai.evaluation.RelevancyEvaluator` moved to `org.springframework.ai.chat.evaluation` package within `spring-ai-client-chat`.
+** `org.springframework.ai.evaluation.EvaluationRequest`, `EvaluationResponse`, and `Evaluator` moved from `spring-ai-client-chat` to `spring-ai-commons` under the `org.springframework.ai.evaluation` package.
+* Output converter classes moved:
+** Classes within `org.springframework.ai.converter` (e.g., `BeanOutputConverter`, `ListOutputConverter`, `MapOutputConverter`, `StructuredOutputConverter`, etc.) moved from `spring-ai-client-chat` to `spring-ai-model`.
+* Transformer classes moved:
+** `org.springframework.ai.chat.transformer.KeywordMetadataEnricher` moved to `org.springframework.ai.model.transformer.KeywordMetadataEnricher` in `spring-ai-model`.
+** `org.springframework.ai.chat.transformer.SummaryMetadataEnricher` moved to `org.springframework.ai.model.transformer.SummaryMetadataEnricher` in `spring-ai-model`.
+* Utility classes moved:
+** `org.springframework.ai.util.PromptAssert` moved from `spring-ai-client-chat` to `org.springframework.ai.rag.util.PromptAssert` in `spring-ai-rag`.
+
+Please update your imports accordingly.
 
 === Observability
 

spring-ai-client-chat/src/main/java/org/springframework/ai/evaluation/EvaluationResponse.java renamed to spring-ai-commons/src/main/java/org/springframework/ai/evaluation/EvaluationResponse.java

@@ -28,7 +28,7 @@
 import org.springframework.ai.document.DocumentReader;
 import org.springframework.ai.evaluation.EvaluationRequest;
 import org.springframework.ai.evaluation.EvaluationResponse;
-import org.springframework.ai.evaluation.RelevancyEvaluator;
+import org.springframework.ai.chat.evaluation.RelevancyEvaluator;
 import org.springframework.ai.integration.tests.TestApplication;
 import org.springframework.ai.openai.OpenAiChatModel;
 import org.springframework.ai.reader.markdown.MarkdownDocumentReader;

spring-ai-client-chat/src/main/java/org/springframework/ai/evaluation/Evaluator.java renamed to spring-ai-commons/src/main/java/org/springframework/ai/evaluation/Evaluator.java

@@ -32,7 +32,7 @@
 import org.springframework.ai.document.DocumentReader;
 import org.springframework.ai.evaluation.EvaluationRequest;
 import org.springframework.ai.evaluation.EvaluationResponse;
-import org.springframework.ai.evaluation.RelevancyEvaluator;
+import org.springframework.ai.chat.evaluation.RelevancyEvaluator;
 import org.springframework.ai.integration.tests.TestApplication;
 import org.springframework.ai.openai.OpenAiChatModel;
 import org.springframework.ai.rag.advisor.RetrievalAugmentationAdvisor;