This example shows how to extend schema generation to cover a specific type that isn’t defined by the type’s properties. This is useful for many of the scalar-like value types, such as bool, int, DateTime, or TimeSpan.
A generator is the appropriate tool for this job.
For this example, we will be implementing a custom generator that handles the TimeSpan type by creating a schema that expects a duration-formatted string.
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// Generators must implement ISchemaGenerator
class TimeSpanSchemaGenerator : ISchemaGenerator
{
public bool Handles(Type type)
{
return type == typeof(TimeSpan);
}
public void AddConstraints(SchemaGeneratorContextBase context)
{
context.Intents.Add(new TypeIntent(SchemaValueType.String));
context.Intents.Add(new FormatIntent(Formats.Duration));
}
}
Once the generator is complete, we must register an instance:
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GeneratorRegistry.Register(new TimeSpanSchemaGenerator());
All done. Generation can now handle TimeSpans.