mifosx-58: wip on data to reprsesent loan schedule.

mifosng-provider/src/main/java/org/mifosng/platform/api/LoansApiResource.java

@@ -160,7 +160,7 @@ public class LoansApiResource {
 				repaymentStrategyOptions, interestRateFrequencyTypeOptions, 
 				amortizationTypeOptions, interestTypeOptions, interestCalculationPeriodTypeOptions, fundOptions, chargeOptions, chargeTemplate, allowedLoanOfficers);
 
-		return this.apiJsonSerializerService.serialzieLoanAccountDataToJson(prettyPrint, responseParameters, newLoanAccount);
+		return this.apiJsonSerializerService.serializeLoanAccountDataToJson(prettyPrint, responseParameters, newLoanAccount);
 	}
 
 	@GET
@@ -258,14 +258,15 @@ public class LoansApiResource {
 				repaymentStrategyOptions, interestRateFrequencyTypeOptions, 
 				amortizationTypeOptions, interestTypeOptions, interestCalculationPeriodTypeOptions, fundOptions, chargeOptions, chargeTemplate, allowedLoanOfficers);
 		
-		return this.apiJsonSerializerService.serialzieLoanAccountDataToJson(prettyPrint, responseParameters, loanAccount);
+		return this.apiJsonSerializerService.serializeLoanAccountDataToJson(prettyPrint, responseParameters, loanAccount);
 	}
 
 	@POST
 	@Consumes({ MediaType.APPLICATION_JSON })
 	@Produces({ MediaType.APPLICATION_JSON })
-	public Response calculateLoanScheduleOrSubmitLoanApplication(
+	public String calculateLoanScheduleOrSubmitLoanApplication(
 			@QueryParam("command") final String commandParam,
+			@Context final UriInfo uriInfo,
 			final String jsonRequestBody) {
 
 		LoanApplicationCommand command = this.apiDataConversionService.convertJsonToLoanApplicationCommand(null, jsonRequestBody);
@@ -273,12 +274,22 @@ public class LoansApiResource {
 		if (is(commandParam, "calculateLoanSchedule")) {
 			CalculateLoanScheduleCommand calculateLoanScheduleCommand = command.toCalculateLoanScheduleCommand();
 			NewLoanScheduleData loanSchedule = this.calculationPlatformService.calculateLoanScheduleNew(calculateLoanScheduleCommand);
-			return Response.ok().entity(loanSchedule).build();
+		
+			final Set<String> typicalLoanScheduleResponseParameters = new HashSet<String>(
+					Arrays.asList("periods", "cumulativePrincipalDisbursed"));
+			
+			Set<String> responseParameters = ApiParameterHelper.extractFieldsForResponseIfProvided(uriInfo.getQueryParameters());
+			if (responseParameters.isEmpty()) {
+				responseParameters.addAll(typicalLoanScheduleResponseParameters);
+			}
+			boolean prettyPrint = ApiParameterHelper.prettyPrint(uriInfo.getQueryParameters());
+			
+			return this.apiJsonSerializerService.serializeLoanScheduleDataToJson(prettyPrint, responseParameters, loanSchedule);
 		}
 
-		EntityIdentifier identifier = this.loanWritePlatformService.submitLoanApplication(command);
+		final EntityIdentifier identifier = this.loanWritePlatformService.submitLoanApplication(command);
 
-		return Response.ok().entity(identifier).build();
+		return this.apiJsonSerializerService.serializeEntityIdentifier(identifier);
 	}
 	
 	@PUT

mifosng-provider/src/main/java/org/mifosng/platform/api/NewLoanScheduleData.java

@@ -1,6 +1,9 @@
 package org.mifosng.platform.api;
 
 import java.math.BigDecimal;
+import java.util.Collection;
+
+import org.mifosng.platform.api.data.LoanSchedulePeriodData;
 
 /**
  * Immutable data object to represent aspects of a loan schedule such as:
@@ -10,29 +13,30 @@ import java.math.BigDecimal;
  *     <li>repayment schedule  - the principal due, outstanding balance and cost of loan items such as interest and charges</li>
  * </ul>
  */
+@SuppressWarnings("unused")
 public class NewLoanScheduleData {
 
 	/**
 	 * The cumulative total of all money (principal) disbursed to the loan applicant.
 	 */
-	private final BigDecimal principalDisbursed;
-	private final BigDecimal principalPaid;
-	private final BigDecimal principalOutstanding;
+	private final BigDecimal cumulativePrincipalDisbursed;
+	private final BigDecimal cumulativePrincipalPaid;
+	private final BigDecimal cumulativePrincipalOutstanding;
 	
 	/**
 	 * The total interest expected on any principal disbursed.
 	 */
-	private final BigDecimal interestExpected;
-	private final BigDecimal interestPaid;
-	private final BigDecimal interestWaived;
-	private final BigDecimal interestOutstanding;
+	private final BigDecimal cumulativeInterestExpected;
+	private final BigDecimal cumulativeInterestPaid;
+	private final BigDecimal cumulativeInterestWaived;
+	private final BigDecimal cumulativeInterestOutstanding;
 	
 	/**
 	 * The cumulative total of all charges applied on the loan to date.
 	 */
-	private final BigDecimal chargesToDate;
-	private final BigDecimal chargesPaid;
-	private final BigDecimal chargesOutstanding;
+	private final BigDecimal cumulativeChargesToDate;
+	private final BigDecimal cumulativeChargesPaid;
+	private final BigDecimal cumulativeChargesOutstanding;
 	
 	/**
 	 * The cumulative total of all costs on the loan.
@@ -49,20 +53,49 @@ public class NewLoanScheduleData {
 	 */
 	private final BigDecimal totalExpectedRepayment;
 	private final BigDecimal totalInArrears;
+	
+	/**
+	 * <code>periods</code> 
+	 */
+	private final Collection<LoanSchedulePeriodData> periods;
 
 	public NewLoanScheduleData() {
-		this.principalDisbursed = null;
-		this.principalPaid = null;
-		this.principalOutstanding = null;
+		this.cumulativePrincipalDisbursed = null;
+		this.cumulativePrincipalPaid = null;
+		this.cumulativePrincipalOutstanding = null;
 		
-		this.interestExpected = null;
-		this.interestPaid = null;
-		this.interestWaived = null;
-		this.interestOutstanding = null;
+		this.cumulativeInterestExpected = null;
+		this.cumulativeInterestPaid = null;
+		this.cumulativeInterestWaived = null;
+		this.cumulativeInterestOutstanding = null;
 		
-		this.chargesToDate = null;
-		this.chargesPaid = null;
-		this.chargesOutstanding = null;
+		this.cumulativeChargesToDate = null;
+		this.cumulativeChargesPaid = null;
+		this.cumulativeChargesOutstanding = null;
+		
+		this.totalCostOfLoan = null;
+		
+		this.totalExpectedRepayment = null;
+		this.totalInArrears = null;
+		
+		this.periods = null;
+	}
+
+	public NewLoanScheduleData(final Collection<LoanSchedulePeriodData> periods) {
+		this.periods = periods;
+		
+		this.cumulativePrincipalDisbursed = null;
+		this.cumulativePrincipalPaid = null;
+		this.cumulativePrincipalOutstanding = null;
+		
+		this.cumulativeInterestExpected = null;
+		this.cumulativeInterestPaid = null;
+		this.cumulativeInterestWaived = null;
+		this.cumulativeInterestOutstanding = null;
+		
+		this.cumulativeChargesToDate = null;
+		this.cumulativeChargesPaid = null;
+		this.cumulativeChargesOutstanding = null;
 		
 		this.totalCostOfLoan = null;
 		

mifosng-provider/src/main/java/org/mifosng/platform/api/data/LoanSchedulePeriodData.java

@@ -1,8 +1,114 @@
 package org.mifosng.platform.api.data;
 
+import java.math.BigDecimal;
+
+import org.joda.time.Days;
+import org.joda.time.LocalDate;
+
 /**
  * Immutable data object that represents a period of a loan schedule.
+ * 
  */
+@SuppressWarnings("unused")
 public class LoanSchedulePeriodData {
 
-}
+	private final Integer period;
+	private final LocalDate fromDate;
+	private final LocalDate dueDate;
+	private final Integer daysInPeriod;
+	private final BigDecimal principalDisbursed;
+	private final BigDecimal principalOriginalDue;
+	private final BigDecimal principalDue;
+	private final BigDecimal principalPaid;
+	private final BigDecimal principalOutstanding;
+	private final BigDecimal principalTotalBalanceOutstanding;
+	
+	private final BigDecimal interestOriginalDue;
+	private final BigDecimal interestDue;
+	private final BigDecimal interestPaid;
+	private final BigDecimal interestOutstanding;
+	
+	private final BigDecimal chargesDue;
+	private final BigDecimal chargesPaid;
+	private final BigDecimal chargesOutstanding;
+	
+	private final BigDecimal totalDueForPeriod;
+
+	public static LoanSchedulePeriodData disbursement(final LocalDate disbursementDate, final BigDecimal principalDisbursed) {
+		Integer periodNumber = Integer.valueOf(0);
+		LocalDate from = null;
+		return new LoanSchedulePeriodData(periodNumber, from, disbursementDate, principalDisbursed);
+	}
+	
+	public static LoanSchedulePeriodData repaymentPeriod(final Integer periodNumber,
+			final LocalDate fromDate, final LocalDate dueDate, final BigDecimal principalDue,
+			final BigDecimal principalOutstanding, final BigDecimal interestDueOnPrincipalOutstanding, final BigDecimal totalDueForPeriod) {
+		
+		BigDecimal principalDisbursed = null;
+		return new LoanSchedulePeriodData(periodNumber, fromDate, dueDate, principalDue, principalOutstanding, interestDueOnPrincipalOutstanding, totalDueForPeriod);
+	}
+	
+	private LoanSchedulePeriodData(
+			final Integer periodNumber, 
+			final LocalDate fromDate, 
+			final LocalDate dueDate,
+			final BigDecimal principalDisbursed) {
+		this.period = periodNumber;
+		this.fromDate = fromDate;
+		this.dueDate = dueDate;
+		if (fromDate != null) {
+			this.daysInPeriod = Days.daysBetween(fromDate, dueDate).getDays();
+		} else {
+			this.daysInPeriod = null;
+		}
+		this.principalDisbursed = principalDisbursed;
+		this.principalOriginalDue = null;
+		this.principalDue = null;
+		this.principalPaid = null;
+		this.principalOutstanding = null;
+		this.principalTotalBalanceOutstanding = principalDisbursed;
+		
+		this.interestOriginalDue = null;
+		this.interestDue = null;
+		this.interestPaid = null;
+		this.interestOutstanding = null;
+	
+		this.chargesDue = null;
+		this.chargesPaid = null;
+		this.chargesOutstanding = null;
+		
+		this.totalDueForPeriod = null;
+	}
+	
+	private LoanSchedulePeriodData(
+			final Integer periodNumber, 
+			final LocalDate fromDate, 
+			final LocalDate dueDate,
+			final BigDecimal principalOriginalDue, final BigDecimal principalOutstanding, final BigDecimal interestDueOnPrincipalOutstanding, final BigDecimal totalDueForPeriod) {
+		this.period = periodNumber;
+		this.fromDate = fromDate;
+		this.dueDate = dueDate;
+		if (fromDate != null) {
+			this.daysInPeriod = Days.daysBetween(fromDate, dueDate).getDays();
+		} else {
+			this.daysInPeriod = null;
+		}
+		this.principalDisbursed = null;
+		this.principalOriginalDue = principalOriginalDue;
+		this.principalDue = principalOriginalDue;
+		this.principalPaid = null;
+		this.principalOutstanding = principalOriginalDue;
+		this.principalTotalBalanceOutstanding = principalOutstanding;
+		
+		this.interestOriginalDue = interestDueOnPrincipalOutstanding;
+		this.interestDue = interestDueOnPrincipalOutstanding;
+		this.interestPaid = null;
+		this.interestOutstanding = interestDueOnPrincipalOutstanding;
+	
+		this.chargesDue = null;
+		this.chargesPaid = null;
+		this.chargesOutstanding = null;
+		
+		this.totalDueForPeriod = totalDueForPeriod;
+	}
+}

mifosng-provider/src/main/java/org/mifosng/platform/api/infrastructure/ApiDataConversionServiceImpl.java

@@ -439,8 +439,8 @@ public class ApiDataConversionServiceImpl implements ApiDataConversionService {
 			throw new InvalidJsonException();
 		}
 		
-		Type typeOfMap = new TypeToken<Map<String, Object>>(){}.getType();
-	    Map<String, Object> requestMap = gsonConverter.fromJson(json, typeOfMap);
+		Type typeOfMap = new TypeToken<Map<String, String>>(){}.getType();
+	    Map<String, String> requestMap = gsonConverter.fromJson(json, typeOfMap);
 	    
 	    Set<String> supportedParams = new HashSet<String>(
 	    		Arrays.asList("clientId", "productId", "externalId", "fundId", "transactionProcessingStrategyId",

mifosng-provider/src/main/java/org/mifosng/platform/api/infrastructure/ApiJsonSerializerService.java

@@ -3,6 +3,7 @@ package org.mifosng.platform.api.infrastructure;
 import java.util.Collection;
 import java.util.Set;
 
+import org.mifosng.platform.api.NewLoanScheduleData;
 import org.mifosng.platform.api.data.AdditionalFieldsSetData;
 import org.mifosng.platform.api.data.AppUserData;
 import org.mifosng.platform.api.data.AuthenticatedUserData;
@@ -13,6 +14,7 @@ import org.mifosng.platform.api.data.ConfigurationData;
 import org.mifosng.platform.api.data.DatatableData;
 import org.mifosng.platform.api.data.DepositAccountData;
 import org.mifosng.platform.api.data.DepositProductData;
+import org.mifosng.platform.api.data.EntityIdentifier;
 import org.mifosng.platform.api.data.FundData;
 import org.mifosng.platform.api.data.GenericResultsetData;
 import org.mifosng.platform.api.data.GroupData;
@@ -90,8 +92,10 @@ public interface ApiJsonSerializerService {
 	String serializeNoteDataToJson(boolean prettyPrint, Set<String> responseParameters, Collection<NoteData> notes);
 
 	String serializeNoteDataToJson(boolean prettyPrint, Set<String> responseParameters, NoteData note);
+	
+	String serializeLoanScheduleDataToJson(boolean prettyPrint, Set<String> responseParameters, NewLoanScheduleData loanSchedule);
 
-	String serialzieLoanAccountDataToJson(boolean prettyPrint, Set<String> responseParameters, LoanAccountData loanAccount);
+	String serializeLoanAccountDataToJson(boolean prettyPrint, Set<String> responseParameters, LoanAccountData loanAccount);
 
 	String serializeLoanTransactionDataToJson(boolean prettyPrint, Set<String> responseParameters, LoanTransactionData transaction);
 
@@ -102,4 +106,6 @@ public interface ApiJsonSerializerService {
 	String serializeStaffDataToJson(boolean prettyPrint, Set<String> responseParameters, StaffData staff);
 	
 	String serializeStaffDataToJson(boolean prettyPrint, Set<String> responseParameters, Collection<StaffData> staff);
+
+	String serializeEntityIdentifier(EntityIdentifier identifier);
 }

mifosng-provider/src/main/java/org/mifosng/platform/api/infrastructure/GoogleGsonApiJsonSerializerService.java

@@ -5,6 +5,7 @@ import java.util.Collection;
 import java.util.HashSet;
 import java.util.Set;
 
+import org.mifosng.platform.api.NewLoanScheduleData;
 import org.mifosng.platform.api.data.AdditionalFieldsSetData;
 import org.mifosng.platform.api.data.AppUserData;
 import org.mifosng.platform.api.data.AuthenticatedUserData;
@@ -15,6 +16,7 @@ import org.mifosng.platform.api.data.ConfigurationData;
 import org.mifosng.platform.api.data.DatatableData;
 import org.mifosng.platform.api.data.DepositAccountData;
 import org.mifosng.platform.api.data.DepositProductData;
+import org.mifosng.platform.api.data.EntityIdentifier;
 import org.mifosng.platform.api.data.FundData;
 import org.mifosng.platform.api.data.GenericResultsetData;
 import org.mifosng.platform.api.data.GroupData;
@@ -133,6 +135,9 @@ public class GoogleGsonApiJsonSerializerService implements ApiJsonSerializerServ
 					"createdOn", "updatedById", "updatedByUsername",
 					"updatedOn"));
 
+	private static final Set<String> LOAN_SCHEDULE_DATA_PARAMETERS = new HashSet<String>(
+			Arrays.asList("periods", "cumulativePrincipalDisbursed"));
+	
 	private static final Set<String> LOAN_DATA_PARAMETERS = new HashSet<String>(
 			Arrays.asList("id", "externalId", "clientId", "clientName", "fundId", "fundName",
 					"loanProductId", "loanProductName", "loanProductDescription", 
@@ -494,7 +499,14 @@ public class GoogleGsonApiJsonSerializerService implements ApiJsonSerializerServ
 	}
 
 	@Override
-	public String serialzieLoanAccountDataToJson(final boolean prettyPrint,
+	public String serializeLoanScheduleDataToJson(final boolean prettyPrint, final Set<String> responseParameters, final NewLoanScheduleData loanSchedule) {
+		final Gson gsonDeserializer = helper
+				.createGsonBuilderWithParameterExclusionSerializationStrategy(LOAN_SCHEDULE_DATA_PARAMETERS, prettyPrint, responseParameters);
+		return helper.serializedJsonFrom(gsonDeserializer, loanSchedule);
+	}
+	
+	@Override
+	public String serializeLoanAccountDataToJson(final boolean prettyPrint,
 			final Set<String> responseParameters,
 			final LoanAccountData loanAccount) {
 		final Gson gsonDeserializer = helper
@@ -555,4 +567,10 @@ public class GoogleGsonApiJsonSerializerService implements ApiJsonSerializerServ
 				staff.toArray(new StaffData[staff.size()]));
 	}
 
+	@Override
+	public String serializeEntityIdentifier(final EntityIdentifier identifier) {
+		final Set<String> DATA_PARAMETERS = new HashSet<String>(Arrays.asList("entityId"));
+		final Gson gsonDeserializer = helper.createGsonBuilderWithParameterExclusionSerializationStrategy(DATA_PARAMETERS, false, DATA_PARAMETERS);
+		return helper.serializedJsonFrom(gsonDeserializer, identifier);
+	}
 }

mifosng-provider/src/main/java/org/mifosng/platform/loan/service/CalculationPlatformServiceImpl.java

@@ -70,20 +70,20 @@ public class CalculationPlatformServiceImpl implements CalculationPlatformServic
 		
 		LoanProductRelatedDetail loanScheduleRelatedDetails = this.loanProductRelatedDetailAssembler.assembleFrom(command);
 		
-		final Integer loanTermFrequency = command.getLoanTermFrequency();
-		final PeriodFrequencyType loanTermFrequencyType = PeriodFrequencyType.fromInt(command.getLoanTermFrequencyType());
+//		final Integer loanTermFrequency = command.getLoanTermFrequency();
+//		final PeriodFrequencyType loanTermFrequencyType = PeriodFrequencyType.fromInt(command.getLoanTermFrequencyType());
 		final InterestMethod interestMethod = InterestMethod.fromInt(command.getInterestType());
 		
 		LoanScheduleGenerator loanScheduleGenerator = this.loanScheduleFactory.create(interestMethod);
 
-		ApplicationCurrency applicationCurrency = this.applicationCurrencyRepository.findOneByCode(loanScheduleRelatedDetails.getCurrency().getCode());
+//		ApplicationCurrency applicationCurrency = this.applicationCurrencyRepository.findOneByCode(loanScheduleRelatedDetails.getCurrency().getCode());
 		
-		CurrencyData currencyData = new CurrencyData(
-				applicationCurrency.getCode(), 
-				applicationCurrency.getName(), 
-				loanScheduleRelatedDetails.getCurrency().getDigitsAfterDecimal(),
-				applicationCurrency.getDisplaySymbol(), 
-				applicationCurrency.getNameCode());
+//		CurrencyData currencyData = new CurrencyData(
+//				applicationCurrency.getCode(), 
+//				applicationCurrency.getName(), 
+//				loanScheduleRelatedDetails.getCurrency().getDigitsAfterDecimal(),
+//				applicationCurrency.getDisplaySymbol(), 
+//				applicationCurrency.getNameCode());
 		
 		return loanScheduleGenerator.generate(loanScheduleRelatedDetails, 
 												command.getExpectedDisbursementDate(), 

mifosng-provider/src/main/java/org/mifosng/platform/loanschedule/domain/EqualInstallmentsAmortizationLoanScheduleGenerator.java

@@ -2,6 +2,7 @@ package org.mifosng.platform.loanschedule.domain;
 
 import java.math.BigDecimal;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 
 import org.joda.time.Days;
@@ -38,7 +39,7 @@ public class EqualInstallmentsAmortizationLoanScheduleGenerator implements Amort
 		// 1. add disbursements to loan schedule
 		
 		// 2.
-		List<LoanSchedulePeriodData> periods = new ArrayList<LoanSchedulePeriodData>();
+		Collection<LoanSchedulePeriodData> periods = new ArrayList<LoanSchedulePeriodData>();
 		
 		// determine 'total payment' for each repayment based on pmt function (and hence the total due overall)
 		final MonetaryCurrency monetaryCurrency = loanScheduleInfo.getPrincipal().getCurrency();
@@ -57,12 +58,17 @@ public class EqualInstallmentsAmortizationLoanScheduleGenerator implements Amort
 				scheduledDates, 
 				idealDisbursementDateBasedOnFirstRepaymentDate);
 		
+		
+		// create entries of disbursement period on loan schedule
+		final LoanSchedulePeriodData disbursementPeriod = LoanSchedulePeriodData.disbursement(disbursementDate, loanScheduleInfo.getPrincipal().getAmount());
+		periods.add(disbursementPeriod);
+		
 		LocalDate startDate = disbursementDate;
-		int installmentNumber = 1;
+		int periodNumber = 1;
 		for (LocalDate scheduledDueDate : scheduledDates) {
 
 			// number of days from startDate to this scheduledDate
-			int daysInPeriod = Days.daysBetween(startDate.toDateMidnight().toDateTime(), scheduledDueDate.toDateMidnight().toDateTime()).getDays();
+			int daysInPeriod = Days.daysBetween(startDate, scheduledDueDate).getDays();
 			
 			Money interestForInstallment = this.periodicInterestRateCalculator.calculateInterestOn(outstandingBalance, periodInterestRateForRepaymentPeriod, daysInPeriod, loanScheduleInfo);
 			Money principalForInstallment = this.periodicInterestRateCalculator.calculatePrincipalOn(totalDuePerInstallment, interestForInstallment, loanScheduleInfo);
@@ -82,7 +88,7 @@ public class EqualInstallmentsAmortizationLoanScheduleGenerator implements Amort
 			totalPrincipal = totalPrincipal.plus(principalForInstallment);
 			totalInterest = totalInterest.plus(interestForInstallment);
 			
-			if (installmentNumber == loanScheduleInfo.getNumberOfRepayments()) {
+			if (periodNumber == loanScheduleInfo.getNumberOfRepayments()) {
 				Money principalDifference = totalPrincipal.minus(loanScheduleInfo.getPrincipal());
 				if (principalDifference.isLessThanZero()) {
 					principalForInstallment = principalForInstallment.plus(principalDifference.abs());
@@ -102,30 +108,20 @@ public class EqualInstallmentsAmortizationLoanScheduleGenerator implements Amort
 
 			outstandingBalance = outstandingBalance.minus(principalForInstallment);
 			
-//			MoneyData principalPerInstallmentValue = MoneyData.of(currencyData, principalForInstallment.getAmount());
-//			MoneyData interestPerInstallmentValue = MoneyData.of(currencyData, interestForInstallment.getAmount());
-//			MoneyData totalInstallmentDueValue = MoneyData.of(currencyData, totalInstallmentDue.getAmount());
-//			MoneyData outstandingBalanceValue = MoneyData.of(currencyData, outstandingBalance.getAmount());
-					
-//			ScheduledLoanInstallment installment = new ScheduledLoanInstallment(
-//					Integer.valueOf(installmentNumber), startDate,
-//					scheduledDueDate, principalPerInstallmentValue,
-//					interestPerInstallmentValue, 
-//					totalInstallmentDueValue,
-//					outstandingBalanceValue);
-			
-			LoanSchedulePeriodData installment = new LoanSchedulePeriodData();
+			LoanSchedulePeriodData installment = LoanSchedulePeriodData.repaymentPeriod(periodNumber, startDate, 
+					scheduledDueDate, 
+					principalForInstallment.getAmount(), 
+					outstandingBalance.getAmount(), 
+					interestForInstallment.getAmount(), totalInstallmentDue.getAmount());
 
 			periods.add(installment);
 
 			startDate = scheduledDueDate;
 
-			installmentNumber++;
+			periodNumber++;
 		}
-
 		
-		
-		return null;
+		return new NewLoanScheduleData(periods);
 	}
 	
 	@Override