From cb29e503658e2a3339c265651a869fcbe0d5bd7d Mon Sep 17 00:00:00 2001
From: Taichi Uragami <backpaper0@gmail.com>
Date: Fri, 6 Apr 2012 23:52:39 +0900
Subject: [PATCH] Added support for left outer join.

---
 src/com/iciql/Query.java           |  9 +++++++++
 tests/com/iciql/test/JoinTest.java | 12 +++++++++++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/com/iciql/Query.java b/src/com/iciql/Query.java
index aa0ce4b..9aefe27 100644
--- a/src/com/iciql/Query.java
+++ b/src/com/iciql/Query.java
@@ -845,6 +845,15 @@ public class Query<T> {
 		return new QueryJoin(this, join);
 	}
 
+    @SuppressWarnings({ "unchecked", "rawtypes" })
+    public <A> QueryJoin<T> leftJoin(A alias) {
+        TableDefinition<T> def = (TableDefinition<T>) db.define(alias.getClass());
+        SelectTable<T> join = new SelectTable(db, this, alias, true);
+        def.initSelectObject(join, alias, aliasMap);
+        joins.add(join);
+        return new QueryJoin(this, join);
+    }
+
 	Db getDb() {
 		return db;
 	}
diff --git a/tests/com/iciql/test/JoinTest.java b/tests/com/iciql/test/JoinTest.java
index 07de098..1fea444 100644
--- a/tests/com/iciql/test/JoinTest.java
+++ b/tests/com/iciql/test/JoinTest.java
@@ -81,6 +81,16 @@ public class JoinTest {
 		assertEquals(2, users.get(0).id);
 	}
 
+    @Test
+    public void testLeftJoin() throws Exception {
+        final UserId u = new UserId();
+        final UserNote n = new UserNote();
+
+        List<UserId> notes = db.from(u).leftJoin(n).on(u.id).is(n.userId).where(u.id).is(4).select();
+        assertEquals(1, notes.size());
+        assertEquals(4, notes.get(0).id);
+    }
+
 	@IQTable
 	public static class UserId {
 
@@ -104,7 +114,7 @@ public class JoinTest {
 		}
 
 		public static List<UserId> getList() {
-			UserId[] list = { new UserId(1, "Tom"), new UserId(2, "Dick"), new UserId(3, "Harry") };
+			UserId[] list = { new UserId(1, "Tom"), new UserId(2, "Dick"), new UserId(3, "Harry"), new UserId(4, "Jack") };
 			return Arrays.asList(list);
 		}
 	}
-- 
2.39.5