Patterns and EconomicBasis

[dcolleoni]

1. Import Amortization Patterns:
   as cashflows: Add EstimateType P(Pattern), move CU to AmountType => change files in the template + formulas looking for CU
   add not mandatory column (Periodicity) which has priority over the one DataNodeParameter.Periodicity.
   as SingleDataNodeParameter : always provided starting from AnnualCohort (documentation)
   Periodicity of the pattern matches the Periodicity provided in the same parameter
   values are stored as they are provided (no interpolation, no normalization).
2. EconomicBasisDriver : additional property of SingleDataNodeParameter (with attribute Dimension(EconomicBasis))

[sbatka]

This was implemented:

add new EstimateType "P" for Patterns to include AmountTypes "CU"

move CU from EstimateType to AmountType, including the changes to formulae

add 'EconomicBasisDriver' to SingleDataNodeParameters, making it optional

add 'ReleasePattern' to SingleDataNodeParameters, making it optional

with some documentation and validations

• add 'CashFlowPeriodicity' and 'InterpolationMethod' to cashflow input importer:

check the presence of 'CashFlowPeriodicity' and 'InterpolationMethod' in the cashflow, if available, it will use it. Note this is defined for combination of 'AmountType', 'EstimateType' in the cashflow set.
If any of the 2 parameters is not available, it will check the 'DataNode' level, namely 'SingleDataNodeParameter' and use for all AmountTypes and EstimateTypes in the given DataNode.
In case no information or invalid data is provided, the default values will be used: CashFlowPeriodicity = Monthly and InterpolationMethod = NotApplicable.
add "ContractTerm" to GOC (not connected anywhere for now)
add basic unit tests for ReleasePattern values