@Override
	public Tbl_union_weixin findUserByUnionId(String unionid) {
		return dao().fetch(Tbl_union_weixin.class, Cnd.where(Tbl_union_weixin._unionid, "=", unionid));
	}
例如这种查询如何优化，映入索引么？

@Table("tbl_union_weixin")
@TableIndexes({@Index(name="unionid",fields={"unionid"},unique=true)}
		        )
public class Tbl_union_weixin  extends BeanBase{
private static final long serialVersionUID = 269247176;
public final static Map <String,Class<?>> types=new HashMap<String,Class<?>>();
public final static String _idtbl_union_weixin="idtbl_union_weixin";
public final static String _unionid="unionid";
public final static String _nickname="nickname";
public final static String _sex="sex";
public final static String _city="city";
public final static String _country="country";
public final static String _province="province";
public final static String _language="language";
public final static String _headimgurl="headimgurl";
public final static String _mobile="mobile";
public final static String _create_time="create_time";
public final static  String[] keys={"idtbl_union_weixin"};

这是实体类字段

好的

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