Add columnPrefix to @Arg as well.

Author: harawata

src/main/java/org/apache/ibatis/annotations/Arg.java

@@ -1,5 +1,5 @@
 /**
- *    Copyright 2009-2017 the original author or authors.
+ *    Copyright 2009-2018 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.
@@ -46,4 +46,9 @@
   String resultMap() default "";
 
   String name() default "";
+
+  /**
+   * @since 3.5.0
+   */
+  String columnPrefix() default "";
 }

src/main/java/org/apache/ibatis/builder/annotation/MapperAnnotationBuilder.java

@@ -609,7 +609,7 @@ private void applyConstructorArgs(Arg[] args, Class<?> resultType, List<ResultMa
           nullOrEmpty(arg.select()),
           nullOrEmpty(arg.resultMap()),
           null,
-          null,
+          nullOrEmpty(arg.columnPrefix()),
           typeHandler,
           flags,
           null,

src/test/java/org/apache/ibatis/submitted/constructor_columnprefix/ConstructorColumnPrefixTest.java

@@ -50,18 +50,31 @@ public void shouldGetArticles() {
     try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
       Mapper mapper = sqlSession.getMapper(Mapper.class);
       List<Article> articles = mapper.getArticles();
-      assertEquals(2, articles.size());
-      Article article1 = articles.get(0);
-      assertEquals(Integer.valueOf(1), article1.getId().getId());
-      assertEquals("Article 1", article1.getName());
-      assertEquals("Mary", article1.getAuthor().getName());
-      assertEquals("Bob", article1.getCoauthor().getName());
-      Article article2 = articles.get(1);
-      assertEquals(Integer.valueOf(2), article2.getId().getId());
-      assertEquals("Article 2", article2.getName());
-      assertEquals("Jane", article2.getAuthor().getName());
-      assertEquals("Mary", article2.getCoauthor().getName());
+      assertArticles(articles);
     }
   }
 
+  @Test
+  public void shouldGetArticlesAnno() {
+    try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
+      Mapper mapper = sqlSession.getMapper(Mapper.class);
+      List<Article> articles = mapper.getArticlesAnno();
+      assertArticles(articles);
+    }
+  }
+
+  protected void assertArticles(List<Article> articles) {
+    assertEquals(2, articles.size());
+    Article article1 = articles.get(0);
+    assertEquals(Integer.valueOf(1), article1.getId().getId());
+    assertEquals("Article 1", article1.getName());
+    assertEquals("Mary", article1.getAuthor().getName());
+    assertEquals("Bob", article1.getCoauthor().getName());
+    Article article2 = articles.get(1);
+    assertEquals(Integer.valueOf(2), article2.getId().getId());
+    assertEquals("Article 2", article2.getName());
+    assertEquals("Jane", article2.getAuthor().getName());
+    assertEquals("Mary", article2.getCoauthor().getName());
+  }
+
 }

src/test/java/org/apache/ibatis/submitted/constructor_columnprefix/Mapper.java

@@ -17,8 +17,28 @@
 
 import java.util.List;
 
+import org.apache.ibatis.annotations.Arg;
+import org.apache.ibatis.annotations.ConstructorArgs;
+import org.apache.ibatis.annotations.Select;
+
 public interface Mapper {
 
   List<Article> getArticles();
 
+  @ConstructorArgs({
+      @Arg(id = true, resultMap = "keyRM", columnPrefix = "key_", javaType = EntityKey.class),
+      @Arg(column = "name", javaType = String.class),
+      @Arg(resultMap = "authorRM", columnPrefix = "author_", javaType = Author.class),
+      @Arg(resultMap = "authorRM", columnPrefix = "coauthor_", javaType = Author.class),
+  })
+  @Select({
+      "select id key_id, name, author.id author_id, author.name author_name,",
+      "  coauthor.id coauthor_id, coauthor.name coauthor_name",
+      "from articles",
+      "left join authors author on author.id = articles.author_id",
+      "left join authors coauthor on coauthor.id = articles.coauthor_id",
+      "order by articles.id"
+  })
+  List<Article> getArticlesAnno();
+
 }