Add support for custom source sets in Doma compile plugin

- Configure Java and Kotlin projects to include custom source directories
- Add test cases for entities and DAOs in custom source locations
- Defer Kotlin configuration until after project evaluation to ensure proper source set resolution
- Update JavaCompileConfigurator to resolve resource directories at task execution time

This enables users to define entities and DAOs in non-standard source locations while maintaining Doma's annotation processing capabilities.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: nakamura-to

compile-java-test/build.gradle.kts

@@ -23,3 +23,10 @@ dependencies {
     testRuntimeOnly(libs.junit.jupiter.engine)
     testRuntimeOnly(libs.junit.platform.launcher)
 }
+
+sourceSets {
+    main {
+        java.srcDir("src/common/java")
+        resources.srcDir("src/common/resources")
+    }
+}

compile-java-test/src/common/java/common/Department.java

@@ -0,0 +1,10 @@
+package common;
+
+import org.seasar.doma.Entity;
+import org.seasar.doma.Id;
+
+@Entity
+public class Department {
+  @Id public Integer id;
+  public String name;
+}

compile-java-test/src/common/java/common/DepartmentDao.java

@@ -0,0 +1,14 @@
+package common;
+
+import org.seasar.doma.Dao;
+import org.seasar.doma.Script;
+import org.seasar.doma.Select;
+
+@Dao
+public interface DepartmentDao {
+  @Select
+  Department selectById(Integer id);
+
+  @Script
+  void create();
+}

compile-java-test/src/common/resources/META-INF/common/DepartmentDao/create.script

@@ -0,0 +1,4 @@
+create table department(
+    id integer not null primary key,
+    name varchar(20) not null,
+);

compile-java-test/src/common/resources/META-INF/common/DepartmentDao/selectById.sql

@@ -0,0 +1 @@
+select * from department where id = /*id*/0

compile-java-test/src/test/java/example/GenerationTest.java

@@ -2,6 +2,8 @@
 
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 
+import common.DepartmentDaoImpl;
+import common._Department;
 import org.junit.jupiter.api.Test;
 
 public class GenerationTest {
@@ -10,5 +12,7 @@ public class GenerationTest {
   public void test() {
     assertNotNull(_Employee.class);
     assertNotNull(EmployeeDaoImpl.class);
+    assertNotNull(_Department.class);
+    assertNotNull(DepartmentDaoImpl.class);
   }
 }

compile-kotlin-test/build.gradle.kts

@@ -30,3 +30,12 @@ dependencies {
     testRuntimeOnly(libs.junit.jupiter.engine)
     testRuntimeOnly(libs.junit.platform.launcher)
 }
+
+kotlin {
+    sourceSets {
+        main {
+            kotlin.srcDir("src/common/kotlin")
+            resources.srcDir("src/common/resources")
+        }
+    }
+}

compile-kotlin-test/src/common/kotlin/common/Department.kt

@@ -0,0 +1,11 @@
+package common
+
+import org.seasar.doma.Entity
+import org.seasar.doma.Id
+
+@Entity
+class Department {
+    @Id
+    var id: Int? = null
+    var name: String? = null
+}

compile-kotlin-test/src/common/kotlin/common/DepartmentDao.kt

@@ -0,0 +1,14 @@
+package common
+
+import org.seasar.doma.Dao
+import org.seasar.doma.Script
+import org.seasar.doma.Select
+
+@Dao
+interface DepartmentDao {
+    @Select
+    fun selectById(id: Int?): Department?
+
+    @Script
+    fun create()
+}

compile-kotlin-test/src/common/resources/META-INF/common/DepartmentDao/create.script

@@ -0,0 +1,4 @@
+create table department(
+    id integer not null primary key,
+    name varchar(20) not null,
+);