Merge pull request #10 from actiontech/fix-issue-1193

fix actiontech/sqle#1193

Author: sjjian

ast/dynamic.go

@@ -129,51 +129,19 @@ func (n *WhenNode) Scan(start *xml.StartElement) error {
 }
 
 type OtherwiseNode struct {
-	Data *MyBatisData
+	*ChildrenNode
 }
 
 func NewOtherwiseNode() *OtherwiseNode {
-	return &OtherwiseNode{}
+	n := &OtherwiseNode{}
+	n.ChildrenNode = NewNode()
+	return n
 }
 
 func (n *OtherwiseNode) Scan(start *xml.StartElement) error {
 	return nil
 }
 
-func (n *OtherwiseNode) AddChildren(ns ...Node) error {
-	err := fmt.Errorf(`<ohterwise> data is invalid`)
-	if len(ns) != 1 {
-		return err
-	}
-	switch d := ns[0].(type) {
-	case *MyBatisData:
-		n.Data = d
-	default:
-		return err
-	}
-	return nil
-}
-
-func (n *OtherwiseNode) GetStmt(ctx *Context) (string, error) {
-	// fix: https://github.com/actiontech/sqle/issues/563
-	// the label <otherwise> may be empty.
-	// <when>
-	/*
-		<when "case 1">
-			case 1
-		</when>
-		<when "case 2">
-			case 2
-		</when>
-		<otherwise> #no default case
-		</otherwise>
-	*/
-	if n.Data != nil {
-		return n.Data.GetStmt(ctx)
-	}
-	return "", nil
-}
-
 type TrimNode struct {
 	*ChildrenNode
 	Name            string

parser_test.go

@@ -995,3 +995,54 @@ func TestParserTrimSuffix_issue704(t *testing.T) {
 `, "INSERT INTO `agent` (`agent_no`,`agent_name`) VALUES (?,?);",
 	)
 }
+
+func TestOtherwise_issue1193(t *testing.T) {
+	testParser(t, `
+<mapper namespace="Test">
+    <select id="testChoose">
+        SELECT
+        *
+        FROM
+        fruits
+        <where>
+            <choose>
+                <when test="name != null">
+                    AND name = #{name}
+                </when>
+                <otherwise>
+                    <if test="price != null and price !=''">
+                        AND price = ${price}
+                    </if>
+                </otherwise>
+            </choose>
+        </where>
+    </select>
+</mapper>
+    `, "SELECT * FROM `fruits` WHERE `name`=? AND `price`=?;",
+	)
+
+	testParser(t, `
+    <mapper namespace="Test">
+        <select id="testChoose">
+            SELECT
+            *
+            FROM
+            fruits
+            <where>
+                <choose>
+                    <when test="name != null">
+                        AND name = #{name}
+                    </when>
+                    <otherwise>
+                        <if test="price != null and price !=''">
+                            AND price = ${price}
+                        </if>
+                        AND category = #{category}
+                    </otherwise>
+                </choose>
+            </where>
+        </select>
+    </mapper>
+        `, "SELECT * FROM `fruits` WHERE `name`=? AND `price`=? AND `category`=?;",
+	)
+}