MIFOSX-1252 Assign/Unassign staff for Savings account-java srcs.MIFOSX-1500 populating loan fields in client page-java srcs

mifosng-provider/src/main/java/org/mifosplatform/commands/domain/CommandWrapper.java

@@ -560,6 +560,14 @@ public class CommandWrapper {
         return this.actionName.equalsIgnoreCase("ADJUSTTRANSACTION") && this.entityName.equalsIgnoreCase("SAVINGSACCOUNT");
     }
     
+    public boolean isAssignStaffSavingsAccount(){
+    	return this.actionName.equalsIgnoreCase("ASSIGNFIELDOFFICER") && this.entityName.equalsIgnoreCase("SAVINGSACCOUNT");
+    }
+
+    public boolean isUnAssignStaffSavingsAccount(){
+    	return this.actionName.equalsIgnoreCase("UNASSIGNFIELDOFFICER") && this.entityName.equalsIgnoreCase("SAVINGSACCOUNT");
+    }
+    
     public boolean isSavingsAccountChargeResource() {
         return this.entityName.equalsIgnoreCase("SAVINGSACCOUNTCHARGE");
     }

mifosng-provider/src/main/java/org/mifosplatform/commands/service/CommandWrapperBuilder.java

@@ -2049,5 +2049,20 @@ public class CommandWrapperBuilder {
         this.entityId = entityId;
         return this;
     }
+    public CommandWrapperBuilder assignFieldOfficer(final Long accountId) {
+    	this.actionName = "ASSIGNFIELDOFFICER";
+        this.entityName = "SAVINGSACCOUNT";
+        this.entityId = accountId;
+        this.href = "/savingsaccounts/" + accountId + "?command=assignFieldOfficer";
+        return this;
+    }
+
+    public CommandWrapperBuilder unassignFieldOfficer(final Long accountId) {
+        this.actionName = "UNASSIGNFIELDOFFICER";
+        this.entityName = "SAVINGSACCOUNT";
+        this.entityId = accountId;
+        this.href = "/savingsaccounts/" + accountId + "?command=unassignFieldOfficer";
+        return this;
+    }
 
 }

mifosng-provider/src/main/java/org/mifosplatform/commands/service/SynchronousCommandProcessingService.java

@@ -492,7 +492,12 @@ public class SynchronousCommandProcessingService implements CommandProcessingSer
                 handler = this.applicationContext.getBean("savingsTransactionAdjustmentCommandHandler", NewCommandSourceHandler.class);
             } else if (wrapper.isSavingsAccountClose()) {
                 handler = this.applicationContext.getBean("closeSavingsAccountCommandHandler", NewCommandSourceHandler.class);
-            } else {
+            }else if(wrapper.isAssignStaffSavingsAccount()) {
+            	handler = this.applicationContext.getBean("assignFieldOfficerSavingsAccountCommandHandler", NewCommandSourceHandler.class);
+            }else if(wrapper.isUnAssignStaffSavingsAccount()) {
+            	handler = this.applicationContext.getBean("unassignFieldOfficerSavingsAccountCommandHandler", NewCommandSourceHandler.class);
+            }
+            else {
                 throw new UnsupportedCommandException(wrapper.commandName());
             }
         } else if (wrapper.isSavingsAccountChargeResource()) {

mifosng-provider/src/main/java/org/mifosplatform/portfolio/accountdetails/data/LoanAccountSummaryData.java

@@ -5,6 +5,8 @@
  */
 package org.mifosplatform.portfolio.accountdetails.data;
 
+import java.math.BigDecimal;
+
 import org.mifosplatform.infrastructure.core.data.EnumOptionData;
 import org.mifosplatform.portfolio.loanaccount.data.LoanApplicationTimelineData;
 import org.mifosplatform.portfolio.loanaccount.data.LoanStatusEnumData;
@@ -26,10 +28,13 @@ public class LoanAccountSummaryData {
     private final Integer loanCycle;
     private final LoanApplicationTimelineData timeline;
     private final Boolean inArrears;
+    private final BigDecimal originalLoan;
+    private final BigDecimal loanBalance;
+    private final BigDecimal amountPaid;
     
     public LoanAccountSummaryData(final Long id, final String accountNo, final String externalId, final Long productId,
             final String loanProductName, final String shortLoanProductName, final LoanStatusEnumData loanStatus, final EnumOptionData loanType, final Integer loanCycle,
-            final LoanApplicationTimelineData timeline, final Boolean inArrears) {
+            final LoanApplicationTimelineData timeline, final Boolean inArrears,final BigDecimal originalLoan,final BigDecimal loanBalance,final BigDecimal amountPaid) {
         this.id = id;
         this.accountNo = accountNo;
         this.externalId = externalId;
@@ -41,5 +46,8 @@ public class LoanAccountSummaryData {
         this.loanCycle = loanCycle;
         this.timeline = timeline;
         this.inArrears = inArrears;
+        this.loanBalance = loanBalance;
+        this.originalLoan = originalLoan;
+        this.amountPaid = amountPaid;
     }
 }

mifosng-provider/src/main/java/org/mifosplatform/portfolio/accountdetails/service/AccountDetailsReadPlatformServiceJpaRepositoryImpl.java

@@ -241,6 +241,11 @@ public class AccountDetailsReadPlatformServiceJpaRepositoryImpl implements Accou
             accountsSummary
                     .append(" l.product_id as productId, lp.name as productName, lp.short_name as shortProductName,")
                     .append(" l.loan_status_id as statusId, l.loan_type_enum as loanType,")
+                    
+                    .append("l.principal_disbursed_derived as originalLoan,")
+                    .append("l.total_outstanding_derived as loanBalance,")
+                    .append("l.total_repayment_derived as amountPaid,")
+                    
                     .append(" l.loan_product_counter as loanCycle,")
 
                     .append(" l.submittedon_date as submittedOnDate,")
@@ -321,6 +326,10 @@ public class AccountDetailsReadPlatformServiceJpaRepositoryImpl implements Accou
             final String closedByFirstname = rs.getString("closedByFirstname");
             final String closedByLastname = rs.getString("closedByLastname");
             
+            final BigDecimal originalLoan = JdbcSupport.getBigDecimalDefaultToNullIfZero(rs,"originalLoan");
+            final BigDecimal loanBalance = JdbcSupport.getBigDecimalDefaultToNullIfZero(rs,"loanBalance");
+            final BigDecimal amountPaid = JdbcSupport.getBigDecimalDefaultToNullIfZero(rs,"amountPaid");
+
             final LocalDate writtenOffOnDate = JdbcSupport.getLocalDate(rs, "writtenOffOnDate");
 
             final LocalDate expectedMaturityDate = JdbcSupport.getLocalDate(rs, "expectedMaturityDate");
@@ -339,7 +348,7 @@ public class AccountDetailsReadPlatformServiceJpaRepositoryImpl implements Accou
                     expectedMaturityDate, writtenOffOnDate, closedByUsername, closedByFirstname, closedByLastname);
 
             return new LoanAccountSummaryData(id, accountNo, externalId, productId, loanProductName, shortLoanProductName, loanStatus, loanType, loanCycle,
-                    timeline, inArrears);
+                    timeline, inArrears,originalLoan,loanBalance,amountPaid);
         }
     }
 

mifosng-provider/src/main/java/org/mifosplatform/portfolio/savings/SavingsApiConstants.java

@@ -48,6 +48,7 @@ public class SavingsApiConstants {
     public static final String localeParamName = "locale";
     public static final String dateFormatParamName = "dateFormat";
     public static final String monthDayFormatParamName = "monthDayFormat";
+    public static final String staffIdParamName = "staffId";
 
     // savings product and account parameters
     public static final String idParamName = "id";
@@ -172,7 +173,7 @@ public class SavingsApiConstants {
             "interestCalculationDaysInYearTypeOptions", "lockinPeriodFrequencyTypeOptions", "withdrawalFeeTypeOptions"));
 
     public static final Set<String> SAVINGS_ACCOUNT_REQUEST_DATA_PARAMETERS = new HashSet<>(Arrays.asList(localeParamName,
-            dateFormatParamName, monthDayFormatParamName, accountNoParamName, externalIdParamName, clientIdParamName, groupIdParamName,
+            dateFormatParamName, monthDayFormatParamName, staffIdParamName, accountNoParamName, externalIdParamName, clientIdParamName, groupIdParamName,
             productIdParamName, fieldOfficerIdParamName, submittedOnDateParamName, nominalAnnualInterestRateParamName,
             interestCompoundingPeriodTypeParamName, interestPostingPeriodTypeParamName, interestCalculationTypeParamName,
             interestCalculationDaysInYearTypeParamName, minRequiredOpeningBalanceParamName, lockinPeriodFrequencyParamName,
@@ -187,7 +188,7 @@ public class SavingsApiConstants {
      * parameters to match those of request parameters.
      */
     public static final Set<String> SAVINGS_ACCOUNT_RESPONSE_DATA_PARAMETERS = new HashSet<>(Arrays.asList(idParamName, accountNoParamName,
-            externalIdParamName, statusParamName, activatedOnDateParamName, clientIdParamName, "clientName", groupIdParamName, "groupName",
+            externalIdParamName, statusParamName, activatedOnDateParamName,staffIdParamName, clientIdParamName, "clientName", groupIdParamName, "groupName",
             "savingsProductId", "savingsProductName", "currency", nominalAnnualInterestRateParamName,
             interestCompoundingPeriodTypeParamName, interestCalculationTypeParamName, interestCalculationDaysInYearTypeParamName,
             minRequiredOpeningBalanceParamName, lockinPeriodFrequencyParamName, lockinPeriodFrequencyTypeParamName,

mifosng-provider/src/main/java/org/mifosplatform/portfolio/savings/api/SavingsAccountsApiResource.java

@@ -248,12 +248,21 @@ public class SavingsAccountsApiResource {
         } else if (is(commandParam, "close")) {
             final CommandWrapper commandRequest = builder.closeSavingsAccountApplication(accountId).build();
             result = this.commandsSourceWritePlatformService.logCommandSource(commandRequest);
+        }else if (is(commandParam, "assignFieldOfficer")) {
+        	final CommandWrapper commandRequest = builder.assignFieldOfficer(accountId).build();
+            result = this.commandsSourceWritePlatformService.logCommandSource(commandRequest);
+            return this.toApiJsonSerializer.serialize(result);
+        } else if (is(commandParam, "unassignFieldOfficer")) {
+        	final CommandWrapper commandRequest = builder.unassignFieldOfficer(accountId).build();
+            result = this.commandsSourceWritePlatformService.logCommandSource(commandRequest);
+            return this.toApiJsonSerializer.serialize(result);
         }
 
+
         if (result == null) {
             //
             throw new UnrecognizedQueryParamException("command", commandParam, new Object[] { "reject", "withdrawnByApplicant", "approve",
-                    "undoapproval", "activate", "calculateInterest", "postInterest", "close" });
+                    "undoapproval", "activate", "calculateInterest", "postInterest", "close" ,"assignFieldOfficer" ,"unassignFieldOfficer"});
         }
 
         return this.toApiJsonSerializer.serialize(result);

mifosng-provider/src/main/java/org/mifosplatform/portfolio/savings/data/SavingsAccountDataValidator.java

@@ -32,9 +32,12 @@ import static org.mifosplatform.portfolio.savings.SavingsApiConstants.withdrawal
 import java.lang.reflect.Type;
 import java.math.BigDecimal;
 import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
+import java.util.Set;
 
 import org.apache.commons.lang.StringUtils;
 import org.joda.time.LocalDate;
@@ -387,4 +390,51 @@ public class SavingsAccountDataValidator {
         }
 
     }
+    public void validateForAssignFieldOfficer(final String json) {
+
+        if (StringUtils.isBlank(json)) { throw new InvalidJsonException(); }
+
+        final Type typeOfMap = new TypeToken<Map<String, Object>>() {}.getType();
+
+        final Set<String> supportedParametersUnassignStaff = new HashSet<>(Arrays.asList(SavingsApiConstants.staffIdParamName));
+
+        this.fromApiJsonHelper.checkForUnsupportedParameters(typeOfMap, json, supportedParametersUnassignStaff);
+        final JsonElement element = this.fromApiJsonHelper.parse(json);
+
+        final List<ApiParameterError> dataValidationErrors = new ArrayList<>();
+
+        final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors)
+                .resource(SavingsApiConstants.SAVINGS_ACCOUNT_RESOURCE_NAME);
+
+        final String staffIdParameterName = SavingsApiConstants.staffIdParamName;
+        final Long staffId = this.fromApiJsonHelper.extractLongNamed(staffIdParameterName, element);
+        baseDataValidator.reset().parameter(staffIdParameterName).value(staffId).notNull().longGreaterThanZero();
+
+        if (!dataValidationErrors.isEmpty()) { throw new PlatformApiDataValidationException(dataValidationErrors); }
+
+    }
+
+	public void validateForUnAssignFieldOfficer(final String json) {
+		if (StringUtils.isBlank(json)) { throw new InvalidJsonException(); }
+
+        final Type typeOfMap = new TypeToken<Map<String, Object>>() {}.getType();
+
+        final Set<String> supportedParametersUnassignStaff = new HashSet<>(Arrays.asList(SavingsApiConstants.staffIdParamName));
+
+        this.fromApiJsonHelper.checkForUnsupportedParameters(typeOfMap, json, supportedParametersUnassignStaff);
+        final JsonElement element = this.fromApiJsonHelper.parse(json);
+
+        final List<ApiParameterError> dataValidationErrors = new ArrayList<>();
+
+        final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors)
+                .resource(SavingsApiConstants.SAVINGS_ACCOUNT_RESOURCE_NAME);
+
+        final String staffIdParameterName = SavingsApiConstants.staffIdParamName;
+        final Long staffId = this.fromApiJsonHelper.extractLongNamed(staffIdParameterName, element);
+        baseDataValidator.reset().parameter(staffIdParameterName).value(staffId).notNull().longGreaterThanZero();
+
+        if (!dataValidationErrors.isEmpty()) { throw new PlatformApiDataValidationException(dataValidationErrors); }
+
+		
+	}
 }

mifosng-provider/src/main/java/org/mifosplatform/portfolio/savings/domain/SavingsAccount.java

@@ -5,6 +5,7 @@
  */
 package org.mifosplatform.portfolio.savings.domain;
 
+
 import static org.mifosplatform.portfolio.savings.SavingsApiConstants.SAVINGS_ACCOUNT_RESOURCE_NAME;
 import static org.mifosplatform.portfolio.savings.SavingsApiConstants.allowOverdraftParamName;
 import static org.mifosplatform.portfolio.savings.SavingsApiConstants.dueAsOfDateParamName;
@@ -15,6 +16,7 @@ import static org.mifosplatform.portfolio.savings.SavingsApiConstants.lockinPeri
 import static org.mifosplatform.portfolio.savings.SavingsApiConstants.minRequiredBalanceParamName;
 import static org.mifosplatform.portfolio.savings.SavingsApiConstants.overdraftLimitParamName;
 import static org.mifosplatform.portfolio.savings.SavingsApiConstants.withdrawalFeeForTransfersParamName;
+import org.mifosplatform.organisation.staff.domain.Staff;
 
 import java.math.BigDecimal;
 import java.math.MathContext;
@@ -1188,6 +1190,17 @@ public class SavingsAccount extends AbstractPersistable<Long> {
         return office;
     }
 
+    public Staff getFieldOfficer() {
+        return this.fieldOfficer;
+    }
+    
+    public void unassignFieldOfficer() {
+        this.fieldOfficer = null;
+    }
+
+    public void assignFieldOfficer(final Staff fieldOfficer) {
+        this.fieldOfficer = fieldOfficer;
+    }
     public Long clientId() {
         Long id = null;
         if (this.client != null) {

mifosng-provider/src/main/java/org/mifosplatform/portfolio/savings/handler/AssignFieldOfficerSavingsAccountCommandHandler.java

@@ -0,0 +1,27 @@
+package org.mifosplatform.portfolio.savings.handler;
+
+import org.mifosplatform.commands.handler.NewCommandSourceHandler;
+import org.mifosplatform.infrastructure.core.api.JsonCommand;
+import org.mifosplatform.infrastructure.core.data.CommandProcessingResult;
+import org.mifosplatform.portfolio.savings.service.SavingsAccountWritePlatformService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+public class AssignFieldOfficerSavingsAccountCommandHandler implements NewCommandSourceHandler {
+	
+	private final SavingsAccountWritePlatformService savingsWritePlatformService;
+
+    @Autowired
+    public AssignFieldOfficerSavingsAccountCommandHandler(final SavingsAccountWritePlatformService savingAccountWritePlatformService) {
+        this.savingsWritePlatformService = savingAccountWritePlatformService;
+    }
+
+    @Transactional
+    @Override
+    public CommandProcessingResult processCommand(final JsonCommand command) {
+        return this.savingsWritePlatformService.assignFieldOfficer(command.entityId(), command);
+    }
+
+}

mifosng-provider/src/main/java/org/mifosplatform/portfolio/savings/handler/UnassignFieldOfficerSavingsAccountCommandHandler.java

@@ -0,0 +1,27 @@
+package org.mifosplatform.portfolio.savings.handler;
+
+import org.mifosplatform.commands.handler.NewCommandSourceHandler;
+import org.mifosplatform.infrastructure.core.api.JsonCommand;
+import org.mifosplatform.infrastructure.core.data.CommandProcessingResult;
+import org.mifosplatform.portfolio.savings.service.SavingsAccountWritePlatformService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+public class UnassignFieldOfficerSavingsAccountCommandHandler implements NewCommandSourceHandler {
+	
+	private final SavingsAccountWritePlatformService savingsWritePlatformService;
+
+    @Autowired
+    public UnassignFieldOfficerSavingsAccountCommandHandler(final SavingsAccountWritePlatformService savingAccountWritePlatformService) {
+        this.savingsWritePlatformService = savingAccountWritePlatformService;
+    }
+
+    @Transactional
+    @Override
+    public CommandProcessingResult processCommand(final JsonCommand command) {
+        return this.savingsWritePlatformService.unassignFieldOfficer(command.entityId(), command);
+    }
+
+}

mifosng-provider/src/main/java/org/mifosplatform/portfolio/savings/service/SavingsAccountWritePlatformService.java

@@ -58,6 +58,10 @@ public interface SavingsAccountWritePlatformService {
     
     CommandProcessingResult inactivateCharge(Long savingsAccountId, Long savingsAccountChargeId);
     
+    CommandProcessingResult assignFieldOfficer(Long savingsAccountId, JsonCommand command);
+    
+    CommandProcessingResult unassignFieldOfficer(Long savingsAccountId, JsonCommand command);
+
     void applyChargeDue(final Long savingsAccountChargeId, final Long accountId);
 
     void processPostActiveActions(SavingsAccount account, DateTimeFormatter fmt, Set<Long> existingTransactionIds,

mifosng-provider/src/main/java/org/mifosplatform/portfolio/savings/service/SavingsAccountWritePlatformServiceJpaRepositoryImpl.java

@@ -46,6 +46,7 @@ import org.mifosplatform.organisation.monetary.domain.MonetaryCurrency;
 import org.mifosplatform.organisation.monetary.domain.Money;
 import org.mifosplatform.organisation.office.domain.Office;
 import org.mifosplatform.organisation.staff.domain.Staff;
+import org.mifosplatform.organisation.staff.domain.StaffRepositoryWrapper;
 import org.mifosplatform.organisation.workingdays.service.WorkingDaysWritePlatformService;
 import org.mifosplatform.portfolio.account.PortfolioAccountType;
 import org.mifosplatform.portfolio.account.service.AccountAssociationsReadPlatformService;
@@ -53,6 +54,7 @@ import org.mifosplatform.portfolio.account.service.AccountTransfersReadPlatformS
 import org.mifosplatform.portfolio.charge.domain.Charge;
 import org.mifosplatform.portfolio.charge.domain.ChargeRepositoryWrapper;
 import org.mifosplatform.portfolio.client.domain.Client;
+import org.mifosplatform.portfolio.client.exception.ClientHasNoStaffException;
 import org.mifosplatform.portfolio.client.exception.ClientNotActiveException;
 import org.mifosplatform.portfolio.group.domain.Group;
 import org.mifosplatform.portfolio.group.exception.GroupNotActiveException;
@@ -64,6 +66,7 @@ import org.mifosplatform.portfolio.savings.SavingsAccountTransactionType;
 import org.mifosplatform.portfolio.savings.SavingsApiConstants;
 import org.mifosplatform.portfolio.savings.SavingsTransactionBooleanValues;
 import org.mifosplatform.portfolio.savings.data.SavingsAccountChargeDataValidator;
+import org.mifosplatform.portfolio.savings.data.SavingsAccountDataValidator;
 import org.mifosplatform.portfolio.savings.data.SavingsAccountTransactionDTO;
 import org.mifosplatform.portfolio.savings.data.SavingsAccountTransactionDataValidator;
 import org.mifosplatform.portfolio.savings.domain.SavingsAccount;
@@ -72,6 +75,7 @@ import org.mifosplatform.portfolio.savings.domain.SavingsAccountCharge;
 import org.mifosplatform.portfolio.savings.domain.SavingsAccountChargeRepositoryWrapper;
 import org.mifosplatform.portfolio.savings.domain.SavingsAccountDomainService;
 import org.mifosplatform.portfolio.savings.domain.SavingsAccountRepository;
+import org.mifosplatform.portfolio.savings.domain.SavingsAccountRepositoryWrapper;
 import org.mifosplatform.portfolio.savings.domain.SavingsAccountStatusType;
 import org.mifosplatform.portfolio.savings.domain.SavingsAccountTransaction;
 import org.mifosplatform.portfolio.savings.domain.SavingsAccountTransactionRepository;
@@ -89,6 +93,9 @@ public class SavingsAccountWritePlatformServiceJpaRepositoryImpl implements Savi
 
     private final PlatformSecurityContext context;
     private final SavingsAccountRepository savingAccountRepository;
+    private final SavingsAccountDataValidator fromApiJsonDeserializer;
+    private final SavingsAccountRepositoryWrapper savingsRepository;
+    private final StaffRepositoryWrapper staffRepository;
     private final SavingsAccountTransactionRepository savingsAccountTransactionRepository;
     private final SavingsAccountAssembler savingAccountAssembler;
     private final SavingsAccountTransactionDataValidator savingsAccountTransactionDataValidator;
@@ -120,7 +127,10 @@ public class SavingsAccountWritePlatformServiceJpaRepositoryImpl implements Savi
             final AccountAssociationsReadPlatformService accountAssociationsReadPlatformService,
             final ChargeRepositoryWrapper chargeRepository, final SavingsAccountChargeRepositoryWrapper savingsAccountChargeRepository,
             final HolidayWritePlatformService holidayWritePlatformService,
-            final WorkingDaysWritePlatformService workingDaysWritePlatformService) {
+            final WorkingDaysWritePlatformService workingDaysWritePlatformService,
+            final SavingsAccountDataValidator fromApiJsonDeserializer,
+            final SavingsAccountRepositoryWrapper savingsRepository,
+            final StaffRepositoryWrapper staffRepository) {
         this.context = context;
         this.savingAccountRepository = savingAccountRepository;
         this.savingsAccountTransactionRepository = savingsAccountTransactionRepository;
@@ -138,6 +148,9 @@ public class SavingsAccountWritePlatformServiceJpaRepositoryImpl implements Savi
         this.savingsAccountChargeRepository = savingsAccountChargeRepository;
         this.holidayWritePlatformService = holidayWritePlatformService;
         this.workingDaysWritePlatformService = workingDaysWritePlatformService;
+        this.fromApiJsonDeserializer = fromApiJsonDeserializer;
+        this.savingsRepository = savingsRepository;
+        this.staffRepository = staffRepository;
     }
 
     @Transactional
@@ -1009,4 +1022,68 @@ public class SavingsAccountWritePlatformServiceJpaRepositoryImpl implements Savi
         return null;
     }
 
+	@Override
+	public CommandProcessingResult assignFieldOfficer(Long savingsAccountId,
+			JsonCommand command) {
+		this.context.authenticatedUser();
+
+        final Map<String, Object> actualChanges = new LinkedHashMap<>(5);
+
+        this.fromApiJsonDeserializer.validateForAssignFieldOfficer(command.json());
+
+        final SavingsAccount savingsForUpdate = this.savingsRepository.findOneWithNotFoundDetection(savingsAccountId);
+
+        Staff staff = null;
+        final Long staffId = command.longValueOfParameterNamed(SavingsApiConstants.staffIdParamName);
+        if (staffId != null) {
+            staff = this.staffRepository.findByOfficeHierarchyWithNotFoundDetection(staffId, savingsForUpdate.office().getHierarchy());
+            
+            savingsForUpdate.assignFieldOfficer(staff);
+        }
+
+        this.savingsRepository.saveAndFlush(savingsForUpdate);
+
+        actualChanges.put(SavingsApiConstants.staffIdParamName, staffId);
+
+        return new CommandProcessingResultBuilder() //
+                .withCommandId(command.commandId()) //
+                .withOfficeId(savingsForUpdate.officeId()) //
+                .withEntityId(savingsForUpdate.getId()) //
+                .withClientId(savingsAccountId) //
+                .with(actualChanges) //
+                .build();
+	}
+
+	@Override
+	public CommandProcessingResult unassignFieldOfficer(Long savingsAccountId,
+			JsonCommand command) {
+		this.context.authenticatedUser();
+
+        final Map<String, Object> actualChanges = new LinkedHashMap<>(5);
+
+        this.fromApiJsonDeserializer.validateForUnAssignFieldOfficer(command.json());
+
+        final SavingsAccount savingsForUpdate = this.savingsRepository.findOneWithNotFoundDetection(savingsAccountId);
+
+        final Staff presentStaff = savingsForUpdate.getFieldOfficer();
+        Long presentStaffId = null;
+        if (presentStaff == null) { throw new ClientHasNoStaffException(savingsAccountId); }
+        presentStaffId = presentStaff.getId();
+        final String staffIdParamName = SavingsApiConstants.staffIdParamName;
+        if (!command.isChangeInLongParameterNamed(staffIdParamName, presentStaffId)) {
+        	savingsForUpdate.unassignFieldOfficer();
+        }
+        this.savingsRepository.saveAndFlush(savingsForUpdate);
+
+        actualChanges.put(staffIdParamName, presentStaffId);
+
+        return new CommandProcessingResultBuilder() //
+                .withCommandId(command.commandId()) //
+                .withOfficeId(savingsForUpdate.officeId()) //
+                .withEntityId(savingsForUpdate.getId()) //
+                .withClientId(savingsAccountId) //
+                .with(actualChanges) //
+                .build();
+	}
+
 }