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Asked: 2026-05-13T07:03:58+00:00

I’m using NHibernate to connect to an ERP database on our DB2 server. We

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I’m using NHibernate to connect to an ERP database on our DB2 server. We have a test schema and a production schema. Both schemas have the same table structure underneath. For testing, I would like to use the same mapping classes but point NHibernate to the test environment when needed and then back when in production. Please keep in mind that we have many production schemas and each production schema has an equivalent test schema.

I know that my XML mapping file has a schema property inside it, but since it’s in XML, it’s not like I can change it via a compiler directive or change the schema property based on a config file.

Any ideas?

Thank You.

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  1. Editorial Team

    To get what I wanted, I had to use NHibernate.Mapping.Attributes.

    [NHibernate.Mapping.Attributes.Class(0, Table = “MyTable”, Schema = MySchemaConfiguration.MySchema)]

    In this way, I can create a class like MySchemaConfiguration and have a property inside of it like MySchema. I can either set the property’s value via a compiler directive or get it through a configuration file. This way I only have to change the schema in one place and it will be reflected throughout all of the other mappings.

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