public void DependencyCascade()
{
// Dependency triggers:
// Tax => Categories => Products
// First create a Tax object:
TaxDto taxDto = new TaxDto()
{
TaxTitle = Rand.AnyTitle,
Rate = 10,
}.SetObjectAsReady() as TaxDto;
// Category next:
CategoryDto categoryDto = new CategoryDto()
{
CategoryTitle = Rand.AnyTitle,
CategoryDesc = Rand.AnyDescription,
}.SetObjectAsReady() as CategoryDto;
// And also a product:
ProductDto productDto = new ProductDto()
{
ProductTitle = Rand.AnyTitle,
BaseCost = 100,
//TaxComponent = 0, // Don't bother, it will be overwritten
}.SetObjectAsReady() as ProductDto;
// Declare dependencies:
categoryDto.AddPrincipalDependency(taxDto);
productDto.AddPrincipalDependency(categoryDto);
taxDto.Rate = 20;
// We need to manually update to head version:
categoryDto = (CategoryDto)OdCepManager.Versioning.GetHeadVersion(typeof(CategoryDto), categoryDto.Uuid);
productDto = (ProductDto)OdCepManager.Versioning.GetHeadVersion(typeof(ProductDto), productDto.Uuid);
decimal taxRateInCat = taxDto.Rate;
Assert.AreEqual(taxRateInCat, categoryDto.TaxRate, "Category tax rate not as expected.");
decimal expectedTaxAmountInProduct = productDto.BaseCost * taxRateInCat / 100;
Assert.AreEqual(expectedTaxAmountInProduct, productDto.TaxComponent, "Product tax component not as expected.");
taxDto.Rate = 50;
categoryDto = (CategoryDto)OdCepManager.Versioning.GetHeadVersion(typeof(CategoryDto), categoryDto.Uuid, out string c);
productDto = (ProductDto)OdCepManager.Versioning.GetHeadVersion(typeof(ProductDto), productDto.Uuid, out c);
taxRateInCat = taxDto.Rate;
Assert.AreEqual(taxRateInCat, categoryDto.TaxRate, "Category tax rate not as expected.");
expectedTaxAmountInProduct = productDto.BaseCost * taxRateInCat / 100;
Assert.AreEqual(expectedTaxAmountInProduct, productDto.TaxComponent, "Product tax component not as expected.");
}
public override ObjectDto OnPrincipalObjectUpdated(ObjectDto updatedPrincipalObj, string optionalArg)
{
// Do whatever you need to do here to manage this change.
// Do NOT attempt to save this object, else it will result in undefined behaviour; just manage
// the change in the object and that's it. The library will ensure that the object is auto-saved.
// Avoid doing any disk/network io here.
if (updatedPrincipalObj is TaxDto)
{
TaxDto taxDto = updatedPrincipalObj as TaxDto;
TaxRate = taxDto.Rate;
}
return(this);
}
