Add conditional test skips and refactor query preparation

Mark certain tests to skip on unsupported DBMS (MySQL, MySQL8, Oracle) using @run annotation to improve compatibility handling. Adjust query preparation in `AutoMultiInsertQuery` to ensure null checks occur before dialect validation and streamline logic.

Author: nakamura-to

doma-core/src/main/java/org/seasar/doma/jdbc/query/AutoMultiInsertQuery.java

@@ -59,18 +59,20 @@ public AutoMultiInsertQuery(EntityType<ENTITY> entityType) {
 
   @Override
   public void prepare() {
+    super.prepare();
+    assertNotNull(method, entityType, entities);
+
     Dialect dialect = config.getDialect();
     if (!dialect.supportsMultiRowInsertStatement()) {
       throw new JdbcException(Message.DOMA2236, dialect.getName());
     }
 
-    super.prepare();
-    assertNotNull(method, entityType, entities);
     if (entities.isEmpty()) {
       sqlExecutionSkipCause = SqlExecutionSkipCause.MULTI_INSERT_TARGET_NONEXISTENT;
       return;
     }
     executable = true;
+
     entity = entities.stream().findFirst().orElseThrow(IllegalStateException::new);
     preInsert();
     prepareSpecialPropertyTypes();

integration-test-java/src/test/java/org/seasar/doma/it/criteria/QueryDslEntityDeleteTest.java

@@ -24,7 +24,9 @@
 import java.util.List;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
+import org.seasar.doma.it.Dbms;
 import org.seasar.doma.it.IntegrationTestEnvironment;
+import org.seasar.doma.it.Run;
 import org.seasar.doma.jdbc.Config;
 import org.seasar.doma.jdbc.OptimisticLockException;
 import org.seasar.doma.jdbc.Result;
@@ -68,6 +70,7 @@ void suppressOptimisticLockException() {
   }
 
   @Test
+  @Run(unless = {Dbms.MYSQL, Dbms.MYSQL8, Dbms.ORACLE})
   void returning() {
     Employee_ e = new Employee_();
 
@@ -85,6 +88,7 @@ void returning() {
   }
 
   @Test
+  @Run(unless = {Dbms.MYSQL, Dbms.MYSQL8, Dbms.ORACLE})
   void returning_specificProperties() {
     Employee_ e = new Employee_();
 
@@ -105,6 +109,7 @@ void returning_specificProperties() {
   }
 
   @Test
+  @Run(unless = {Dbms.MYSQL, Dbms.MYSQL8, Dbms.ORACLE})
   void returning_OptimisticLockException() {
     Employee_ e = new Employee_();
 
@@ -116,6 +121,7 @@ void returning_OptimisticLockException() {
   }
 
   @Test
+  @Run(unless = {Dbms.MYSQL, Dbms.MYSQL8, Dbms.ORACLE})
   void returning_suppressOptimisticLockException() {
     Employee_ e = new Employee_();
 

integration-test-java/src/test/java/org/seasar/doma/it/criteria/QueryDslEntityMultiInsertTest.java

@@ -378,6 +378,7 @@ void returning_specificProperties() {
   }
 
   @Test
+  @Run(unless = {Dbms.MYSQL, Dbms.MYSQL8, Dbms.ORACLE})
   void returning_skip() {
     Department_ d = new Department_();