MIFOSX-60 API template method for loan charges

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

@@ -498,6 +498,21 @@ public class LoansApiResource {
         return Response.ok().entity(identifier).build();
     }
 
+    @GET
+    @Path("{loanId}/charges/template")
+    @Consumes({MediaType.APPLICATION_JSON})
+    @Produces({MediaType.APPLICATION_JSON})
+    public String retrieveNewLoanChargeDetails(@Context final UriInfo uriInfo) {
+        Set<String> responseParameters = ApiParameterHelper.extractFieldsForResponseIfProvided(uriInfo.getQueryParameters());
+
+        boolean prettyPrint = ApiParameterHelper.prettyPrint(uriInfo.getQueryParameters());
+
+        Collection<ChargeData> chargeOptions = this.chargeReadPlatformService.retrieveLoanApplicableCharges();
+        LoanChargeData loanChargeTemplate = LoanChargeData.template(chargeOptions);
+
+        return this.apiJsonSerializerService.serializeLoanChargeDataToJson(prettyPrint, responseParameters, loanChargeTemplate);
+    }
+
     @PUT
     @Path("{loanId}/charges/{chargeId}")
     @Consumes({ MediaType.APPLICATION_JSON })

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

@@ -1,6 +1,7 @@
 package org.mifosng.platform.api.data;
 
 import java.math.BigDecimal;
+import java.util.Collection;
 
 /**
  * Immutable data object for loan charge data.
@@ -17,6 +18,12 @@ public class LoanChargeData {
     private final EnumOptionData chargeTimeType;
     private final EnumOptionData chargeCalculationType;
 
+    private final Collection<ChargeData> chargeOptions;
+
+    public static LoanChargeData template(final Collection<ChargeData> chargeOptions){
+        return new LoanChargeData(null,null,null,null,null,null,null, chargeOptions);
+    }
+
     public LoanChargeData(Long id, Long chargeId, String name, CurrencyData currency, BigDecimal amount,
                           EnumOptionData chargeTimeType, EnumOptionData chargeCalculationType) {
         this.id = id;
@@ -26,6 +33,21 @@ public class LoanChargeData {
         this.amount = amount;
         this.chargeTimeType = chargeTimeType;
         this.chargeCalculationType = chargeCalculationType;
+
+        this.chargeOptions = null;
+    }
+
+    public LoanChargeData(Long id, Long chargeId, String name, CurrencyData currency, BigDecimal amount,
+                          EnumOptionData chargeTimeType, EnumOptionData chargeCalculationType,
+                          Collection<ChargeData> chargeOptions) {
+        this.id = id;
+        this.chargeId = chargeId;
+        this.name = name;
+        this.currency = currency;
+        this.amount = amount;
+        this.chargeTimeType = chargeTimeType;
+        this.chargeCalculationType = chargeCalculationType;
+        this.chargeOptions = chargeOptions;
     }
 
     public Long getId() {

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

@@ -19,6 +19,7 @@ import org.mifosng.platform.api.data.FundData;
 import org.mifosng.platform.api.data.GenericResultsetData;
 import org.mifosng.platform.api.data.GroupData;
 import org.mifosng.platform.api.data.LoanAccountData;
+import org.mifosng.platform.api.data.LoanChargeData;
 import org.mifosng.platform.api.data.LoanProductData;
 import org.mifosng.platform.api.data.LoanTransactionData;
 import org.mifosng.platform.api.data.NoteData;
@@ -103,6 +104,8 @@ public interface ApiJsonSerializerService {
 
 	String serializeChargeDataToJson(boolean prettyPrint, Set<String> responseParameters, ChargeData charge);
 
+    String serializeLoanChargeDataToJson(boolean prettyPrint, Set<String> responseParameters, LoanChargeData charge);
+
 	String serializeStaffDataToJson(boolean prettyPrint, Set<String> responseParameters, StaffData staff);
 	
 	String serializeStaffDataToJson(boolean prettyPrint, Set<String> responseParameters, Collection<StaffData> staff);

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

@@ -21,6 +21,7 @@ import org.mifosng.platform.api.data.FundData;
 import org.mifosng.platform.api.data.GenericResultsetData;
 import org.mifosng.platform.api.data.GroupData;
 import org.mifosng.platform.api.data.LoanAccountData;
+import org.mifosng.platform.api.data.LoanChargeData;
 import org.mifosng.platform.api.data.LoanProductData;
 import org.mifosng.platform.api.data.LoanTransactionData;
 import org.mifosng.platform.api.data.NoteData;
@@ -169,6 +170,9 @@ public class GoogleGsonApiJsonSerializerService implements ApiJsonSerializerServ
 					"chargeCalculationType", "chargeCalculationTypeOptions",
                     "chargeAppliesToOptions", "chargeTimeTypeOptions", "currencyOptions"));
 
+    private static final Set<String> LOAN_CHARGES_DATA_PARAMETERS = new HashSet<String>(
+            Arrays.asList("chargeOptions"));
+
 	private final GoogleGsonSerializerHelper helper;
 
 	@Autowired
@@ -549,7 +553,16 @@ public class GoogleGsonApiJsonSerializerService implements ApiJsonSerializerServ
 		return helper.serializedJsonFrom(gsonDeserializer, charge);
 	}
 
-	@Override
+    @Override
+    public String serializeLoanChargeDataToJson(boolean prettyPrint, Set<String> responseParameters, LoanChargeData charge) {
+        final Gson gsonDeserializer = helper
+                .createGsonBuilderWithParameterExclusionSerializationStrategy(
+                        LOAN_CHARGES_DATA_PARAMETERS, prettyPrint,
+                        responseParameters);
+        return helper.serializedJsonFrom(gsonDeserializer, charge);
+    }
+
+    @Override
 	public String serializeStaffDataToJson(boolean prettyPrint,
 			Set<String> responseParameters, StaffData staff) {
 		final Gson gsonDeserializer = helper