Support -- and # by default as Quartz datasource init comment prefixes

Closes gh-17435

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/quartz/QuartzDataSourceInitializer.java

@@ -43,7 +43,7 @@ public class QuartzDataSourceInitializer extends AbstractDataSourceInitializer {
 
 	@Override
 	protected void customize(ResourceDatabasePopulator populator) {
-		populator.setCommentPrefix(this.properties.getJdbc().getCommentPrefix());
+		populator.setCommentPrefixes(this.properties.getJdbc().getCommentPrefix().toArray(new String[0]));
 	}
 
 	@Override

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/quartz/QuartzProperties.java

@@ -17,7 +17,10 @@
 package org.springframework.boot.autoconfigure.quartz;
 
 import java.time.Duration;
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
@@ -144,9 +147,9 @@ public class QuartzProperties {
 		private DataSourceInitializationMode initializeSchema = DataSourceInitializationMode.EMBEDDED;
 
 		/**
-		 * Prefix for single-line comments in SQL initialization scripts.
+		 * Prefixes for single-line comments in SQL initialization scripts.
 		 */
-		private String commentPrefix = "--";
+		private List<String> commentPrefix = new ArrayList<>(Arrays.asList("#", "--"));
 
 		public String getSchema() {
 			return this.schema;
@@ -164,11 +167,11 @@ public class QuartzProperties {
 			this.initializeSchema = initializeSchema;
 		}
 
-		public String getCommentPrefix() {
+		public List<String> getCommentPrefix() {
 			return this.commentPrefix;
 		}
 
-		public void setCommentPrefix(String commentPrefix) {
+		public void setCommentPrefix(List<String> commentPrefix) {
 			this.commentPrefix = commentPrefix;
 		}
 

spring-boot-project/spring-boot-autoconfigure/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -743,6 +743,13 @@
         "level" : "error"
       }
     },
+    {
+      "name": "spring.quartz.jdbc.comment-prefix",
+      "defaultValue": [
+        "#",
+        "--"
+      ]
+    },
     {
       "name": "spring.quartz.jdbc.initialize-schema",
       "defaultValue": "embedded"

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/quartz/QuartzDataSourceInitializerTests.java

@@ -26,6 +26,7 @@ import org.springframework.boot.autoconfigure.AutoConfigurations;
 import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
 import org.springframework.boot.autoconfigure.jdbc.JdbcTemplateAutoConfiguration;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.boot.test.context.assertj.AssertableApplicationContext;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -47,16 +48,31 @@ class QuartzDataSourceInitializerTests {
 			.withPropertyValues("spring.datasource.url=" + String.format(
 					"jdbc:h2:mem:test-%s;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE", UUID.randomUUID().toString()));
 
+	@Test
+	void hashIsUsedAsACommentPrefixByDefault() {
+		this.contextRunner.withUserConfiguration(TestConfiguration.class).withPropertyValues(
+				"spring.quartz.jdbc.schema=classpath:org/springframework/boot/autoconfigure/quartz/tables_#_comments.sql")
+				.run(this::assertThatDataSourceHasBeenInitialized);
+	}
+
+	@Test
+	void doubleDashIsUsedAsACommentPrefixByDefault() {
+		this.contextRunner.withUserConfiguration(TestConfiguration.class).withPropertyValues(
+				"spring.quartz.jdbc.schema=classpath:org/springframework/boot/autoconfigure/quartz/tables_--_comments.sql")
+				.run(this::assertThatDataSourceHasBeenInitialized);
+	}
+
 	@Test
 	void commentPrefixCanBeCustomized() {
 		this.contextRunner.withUserConfiguration(TestConfiguration.class).withPropertyValues(
 				"spring.quartz.jdbc.comment-prefix=##",
 				"spring.quartz.jdbc.schema=classpath:org/springframework/boot/autoconfigure/quartz/tables_@@platform@@.sql")
-				.run((context) -> {
-					JdbcTemplate jdbcTemplate = context.getBean(JdbcTemplate.class);
-					assertThat(jdbcTemplate.queryForObject("SELECT COUNT(*) FROM QRTZ_TEST_TABLE", Integer.class))
-							.isEqualTo(0);
-				});
+				.run(this::assertThatDataSourceHasBeenInitialized);
+	}
+
+	private void assertThatDataSourceHasBeenInitialized(AssertableApplicationContext context) {
+		JdbcTemplate jdbcTemplate = context.getBean(JdbcTemplate.class);
+		assertThat(jdbcTemplate.queryForObject("SELECT COUNT(*) FROM QRTZ_TEST_TABLE", Integer.class)).isEqualTo(0);
 	}
 
 	@Configuration(proxyBeanMethods = false)

spring-boot-project/spring-boot-autoconfigure/src/test/resources/org/springframework/boot/autoconfigure/quartz/tables_#_comments.sql

+# This is a test script to check # is treated as a comment prefix by default
+
+CREATE TABLE QRTZ_TEST_TABLE (
+  SCHED_NAME VARCHAR(120) NOT NULL,
+  CALENDAR_NAME VARCHAR (200) NOT NULL
+);
+
+# Another comment
+
+COMMIT;

spring-boot-project/spring-boot-autoconfigure/src/test/resources/org/springframework/boot/autoconfigure/quartz/tables_--_comments.sql

+-- This is a test script to check -- is treated as a comment prefix by default
+
+CREATE TABLE QRTZ_TEST_TABLE (
+  SCHED_NAME VARCHAR(120) NOT NULL,
+  CALENDAR_NAME VARCHAR (200) NOT NULL
+);
+
+-- Another comment
+
+COMMIT;