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 {
+
+}