Oracle: add OracleChatMemory support

memory/repository/spring-ai-model-chat-memory-repository-jdbc/pom.xml

@@ -88,6 +88,14 @@
 <optional>true</optional>
 </dependency>
 
+<!-- Oracle JDBC Driver -->
+<dependency>
+<groupId>com.oracle.database.jdbc</groupId>
+<artifactId>ojdbc8</artifactId>
+<version>21.13.0.0</version>
+<scope>test</scope>
+</dependency>
+
 <dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-test</artifactId>
@@ -100,6 +108,14 @@
 <scope>test</scope>
 </dependency>
 
+<!-- Testcontainers for Oracle -->
+<dependency>
+<groupId>org.testcontainers</groupId>
+<artifactId>oracle-xe</artifactId>
+<version>1.19.0</version>
+<scope>test</scope>
+</dependency>
+
 <dependency>
 <groupId>org.testcontainers</groupId>
 <artifactId>postgresql</artifactId>

memory/repository/spring-ai-model-chat-memory-repository-jdbc/src/main/java/org/springframework/ai/chat/memory/repository/jdbc/JdbcChatMemoryRepositoryDialect.java

@@ -71,6 +71,9 @@ static JdbcChatMemoryRepositoryDialect from(DataSource dataSource) {
 if (url.contains("hsqldb")) {
 return new HsqldbChatMemoryRepositoryDialect();
 }
+if (url.contains("oracle")) {
+return new OracleChatMemoryRepositoryDialect();
+}
 // Add more as needed
 }
 catch (Exception ignored) {

memory/repository/spring-ai-model-chat-memory-repository-jdbc/src/main/java/org/springframework/ai/chat/memory/repository/jdbc/OracleChatMemoryRepositoryDialect.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2024-2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.ai.chat.memory.repository.jdbc;
+
+/**
+ * Dialect for Oracle.
+ *
+ * @author Xiaotong Fan
+ * @since 1.1.0
+ */
+
+public class OracleChatMemoryRepositoryDialect implements JdbcChatMemoryRepositoryDialect {
+
+@Override
+public String getSelectMessagesSql() {
+return "SELECT content, type FROM SPRING_AI_CHAT_MEMORY WHERE conversation_id = ? ORDER BY \"timestamp\"";
+}
+
+@Override
+public String getInsertMessageSql() {
+return "INSERT INTO SPRING_AI_CHAT_MEMORY (conversation_id, content, type, \"timestamp\") VALUES (?, ?, ?, ?)";
+}
+
+@Override
+public String getSelectConversationIdsSql() {
+return "SELECT DISTINCT conversation_id FROM SPRING_AI_CHAT_MEMORY";
+}
+
+@Override
+public String getDeleteMessagesSql() {
+return "DELETE FROM SPRING_AI_CHAT_MEMORY WHERE conversation_id = ?";
+}
+
+/**
+ * This method requires uncommenting the Override annotation after the interface
+ * defines the method
+ */
+// @Override
+public String getDeleteAllMessageSql() {
+return "DELETE FROM SPRING_AI_CHAT_MEMORY";
+}
+
+}

memory/repository/spring-ai-model-chat-memory-repository-jdbc/src/main/resources/org/springframework/ai/chat/memory/repository/jdbc/schema-oracle.sql

@@ -0,0 +1,9 @@
+CREATE TABLE SPRING_AI_CHAT_MEMORY (
+ conversation_id VARCHAR2(36) NOT NULL,
+ content CLOB NOT NULL,
+ type VARCHAR2(10) NOT NULL CHECK (type IN ('USER', 'ASSISTANT', 'SYSTEM', 'TOOL')),
+ "timestamp" TIMESTAMP NOT NULL
+);
+
+CREATE INDEX idx_conversation_id ON SPRING_AI_CHAT_MEMORY(conversation_id);
+CREATE INDEX idx_conversation_id_timestamp ON SPRING_AI_CHAT_MEMORY(conversation_id, "timestamp");

memory/repository/spring-ai-model-chat-memory-repository-jdbc/src/test/java/org/springframework/ai/chat/memory/repository/jdbc/JdbcChatMemoryRepositoryBuilderTests.java

@@ -37,6 +37,7 @@
  *
  * @author Mark Pollack
  * @author Yanming Zhou
+ * @author Xiaotong Fan
  */
 public class JdbcChatMemoryRepositoryBuilderTests {
 
@@ -136,6 +137,23 @@ void testBuilderWithHsqldbDialectFromDataSource() throws SQLException {
 assertThat(repository).isNotNull();
 }
 
+@Test
+void testBuilderWithOracleDialectFromDataSource() throws SQLException {
+// Setup mocks for Oracle
+DataSource dataSource = mock(DataSource.class);
+Connection connection = mock(Connection.class);
+DatabaseMetaData metaData = mock(DatabaseMetaData.class);
+
+when(dataSource.getConnection()).thenReturn(connection);
+when(connection.getMetaData()).thenReturn(metaData);
+when(metaData.getURL()).thenReturn("jdbc:oracle:thin:@//192.168.19.129:1521/ORCL");
+
+// Test with dialect from datasource
+JdbcChatMemoryRepository repository = JdbcChatMemoryRepository.builder().dataSource(dataSource).build();
+
+assertThat(repository).isNotNull();
+}
+
 @Test
 void testBuilderWithUnknownDialectFromDataSource() throws SQLException {
 // Setup mocks for unknown database

memory/repository/spring-ai-model-chat-memory-repository-jdbc/src/test/java/org/springframework/ai/chat/memory/repository/jdbc/JdbcChatMemoryRepositoryOracleIT.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2023-2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.ai.chat.memory.repository.jdbc;
+
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.jdbc.Sql;
+
+/**
+ * Integration tests for {@link JdbcChatMemoryRepository} with Oracle.
+ *
+ * @author Xiaotong Fan
+ */
+
+@SpringBootTest
+@TestPropertySource(properties = { "spring.datasource.url=jdbc:tc:oracle:21.3.0.0:///" })
+@Sql(scripts = "classpath:org/springframework/ai/chat/memory/repository/jdbc/schema-oracle.sql")
+public class JdbcChatMemoryRepositoryOracleIT extends AbstractJdbcChatMemoryRepositoryIT {
+
+}