Script Pre-Processors are a really handy extensibility hook into DbUp, it allows you to modify a script before it is executed. Some examples of how this can/is used:
- Variable Substitution
- Replacing incompatible types
- For SqlCe/SQLite we automatically replace
nvarchar(max)
withntext
- Stripping the $schema$. variable out of databases which do not support schemas
Writing your own
To create your own pre-processor just implement the IScriptPreprocessor
interface then register is with your DbUp builder:
DeployChanges
.To
.SqlDatabase(..)
.WithPreProcessor(new MyPreprocessor())