什么是Hibernate中的Return标量以及如何使用它

Question

Kindly explain the Return Scalar concept in Hibernate

Regards Manish Srivastava

Answer 1

The "Return Scalar" concept is used to return particular column of hibernate entity.

we are using this concept with Named Query

    <return-scalar column="name" type="string" />
    <return-scalar column="lname" type="string" />

    <![CDATA[select cust.fname AS name,cust.lname AS lname
    from customer cust where
    cust.fname=:fname
    ]]>

</sql-query>

In above query we are going to fetch only Customer fname and lname

The "Return Scalar" returns List of Object array of size (number of field that you want to return) in this example it will return List of Object array of size 2 you can access arr[0](for fname) and arr[1](for lname)

Please Refer Return Scalar Example

Here's a manishjavadev.com/Hibernate/returnScalarXml.html