Oracle存储过程可以返回Java中可用的对象吗？

Question

I am working with a PL/SQL developer on a project. The other developer is writing the stored procedures I need to call.

One of the stored procedures needs to return everything about a product:

name, price, description, color, weight, manufacturer, etc - ( 15 pieces of info in total )

I assumed that the stored procedure would accept one IN parameter, the product-id and return 15 OUT parameters.

Is there a way that the stored procedure can return an object that I can cast to a custom datatype? Is this a typical technique, or would you normally return multiple OUT parameters?

Answer 1

My preference would be that the procedure (or if it is just retrieving the product information, a function) returned a PL/SQL product object that the Java code retrieves either as a java.sql.STRUCT or as a more strongly typed object.

Oracle has sample code for both approaches on its web site. Here is an example of the java.sql.STRUCT approach . And here is the strongly typed object approach . The strongly typed example uses JPublisher to create the strongly typed object classes but the JDBC Developer's Guide walks you through creating your own mappings.

Answer 2

Hiberante provides a way to map the result of a sql query or a stored procedure to a java object. It is a complex Object-Relational Mapping solution, but in most cases it's worth the effort.

Answer 3

SQL查询不能以任何方式返回对象，您应该只返回选择运算符的结果，然后使用该结果自己构造一个对象