重构 SQL 构建器。

src/main/java/xyz/zhouxy/plusone/commons/jdbc/MyBatisSql.java

@@ -0,0 +1,65 @@
+package xyz.zhouxy.plusone.commons.jdbc;
+
+import com.google.common.annotations.Beta;
+
+@Beta
+public class MyBatisSql extends SQL<MyBatisSql> {
+
+    private final boolean withScript;
+
+    MyBatisSql(boolean withScript) {
+        super();
+        this.withScript = withScript;
+    }
+
+    public static MyBatisSql newSql() {
+        return new MyBatisSql(false);
+    }
+
+    public static MyBatisSql newScriptSql() {
+        return new MyBatisSql(true);
+    }
+
+    @Override
+    public MyBatisSql getSelf() {
+        return this;
+    }
+
+    public static String IN(String col, String paramName) {
+        return new StringBuilder(" ")
+                .append(col)
+                .append(" IN")
+                .append(buildQuestionsList(col, paramName))
+                .toString();
+    }
+
+    public static String NOT_IN(String col, String paramName) {
+        return new StringBuilder()
+                .append(col)
+                .append(" NOT IN")
+                .append(buildQuestionsList(col, paramName))
+                .toString();
+    }
+
+    private static String buildQuestionsList(String col, String paramName) {
+        return new StringBuilder()
+                .append("<foreach item=\"")
+                .append(col)
+                .append("\" index=\"index\" collection=\"")
+                .append(paramName)
+                .append("\" open=\"(\" separator=\",\" close=\")\">")
+                .append("#{")
+                .append(col)
+                .append("}</foreach>")
+                .toString();
+    }
+
+    @Override
+    public String toString() {
+        String str = super.toString();
+        if (withScript) {
+            str = "<script>\n" + str + "\n</script>";
+        }
+        return str;
+    }
+}