service/src/main/java/io/mifos/reporting/service/internal/specification/LoanListReportSpecification.java - fineract-cn-reporting - Git at Google

 /*
  * Copyright 2017 The Mifos Initiative.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *    http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 package io.mifos.reporting.service.internal.specification;

 import io.mifos.core.api.util.UserContextHolder;
 import io.mifos.core.lang.DateConverter;
 import io.mifos.reporting.api.v1.domain.*;
 import io.mifos.reporting.service.ServiceConstants;
 import io.mifos.reporting.service.spi.*;
 import org.slf4j.Logger;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;

 import javax.persistence.EntityManager;
 import javax.persistence.Query;
 import java.time.Clock;
 import java.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
 import java.util.stream.Collectors;

 @Report(category = "Loan", identifier = "Listing")
 public class LoanListReportSpecification implements ReportSpecification {


     private static final String CUSTOMER = "Customer";
     private static final String FIRST_NAME = "First Name";
     private static final String MIDDLE_NAME = "Middle Name";
     private static final String LAST_NAME = "Last Name";
     private static final String LOAN_TERM = "Loan Term";
     private static final String TIME_UNIT = "Time Unit";
     private static final String OFFICE = "Office";
     private static final String PRINCIPAL = "Principal";
     private static final String CASE = "Case Id";

     private static final String LOAN = "Loan";
     private static final String PRODUCT = "Type";
     private static final String STATE = "State";
     private static final String DATE_RANGE = "Created On";
     private static final String EMPLOYEE = "Created By";

     private final Logger logger;

     private final EntityManager entityManager;

     private final HashMap<String, String> customerColumnMapping = new HashMap<>();
     private final HashMap<String, String> loanColumnMapping = new HashMap<>();
     private final HashMap<String, String> caseColumnMapping = new HashMap<>();
     private final HashMap<String, String> allColumnMapping = new HashMap<>();

     @Autowired
     public LoanListReportSpecification(@Qualifier(ServiceConstants.LOGGER_NAME) final Logger logger,
                                        final EntityManager entityManager) {
         super();
         this.logger = logger;
         this.entityManager = entityManager;
         this.initializeMapping();
     }

     @Override
     public ReportDefinition getReportDefinition() {
         final ReportDefinition reportDefinition = new ReportDefinition();
         reportDefinition.setIdentifier("Listing");
         reportDefinition.setName("Loan Account Listing");
         reportDefinition.setDescription("List of all loan accounts.");
         reportDefinition.setQueryParameters(this.buildQueryParameters());
         reportDefinition.setDisplayableFields(this.buildDisplayableFields());
         return reportDefinition;
     }

     @Override
     public ReportPage generateReport(ReportRequest reportRequest, int pageIndex, int size) {
         final ReportDefinition reportDefinition = this.getReportDefinition();
         this.logger.info("Generating report {0}.", reportDefinition.getIdentifier());

         final ReportPage reportPage = new ReportPage();
         reportPage.setName(reportDefinition.getName());
         reportPage.setDescription(reportDefinition.getDescription());
         reportPage.setHeader(this.createHeader(reportRequest.getDisplayableFields()));

         final Query customerQuery;
         customerQuery = this.entityManager.createNativeQuery(this.buildCustomerQuery(reportRequest, pageIndex, size));
         final List<?> customerResultList =  customerQuery.getResultList();
         reportPage.setRows(this.buildRows(reportRequest, customerResultList));

         reportPage.setHasMore(
                 !this.entityManager.createNativeQuery(this.buildCustomerQuery(reportRequest, pageIndex + 1, size))
                         .getResultList().isEmpty()
         );

         reportPage.setGeneratedBy(UserContextHolder.checkedGetUser());
         reportPage.setGeneratedOn(DateConverter.toIsoString(LocalDateTime.now(Clock.systemUTC())));
         return reportPage;
     }

     @Override
     public void validate(ReportRequest reportRequest) throws IllegalArgumentException {
         final ArrayList<String> unknownFields =  new ArrayList<>();
         reportRequest.getQueryParameters().forEach(queryParameter -> {
             if (!this.allColumnMapping.keySet().contains(queryParameter.getName())) {
                 unknownFields.add(queryParameter.getName());
             }
         });

         reportRequest.getDisplayableFields().forEach(displayableField -> {
             if (!this.allColumnMapping.keySet().contains(displayableField.getName())) {
                 unknownFields.add(displayableField.getName());
             }
         });

         if (!unknownFields.isEmpty()) {
             throw new IllegalArgumentException(
                     "Unspecified fields requested: " + unknownFields.stream().collect(Collectors.joining(", "))
             );
         }
     }

     private void initializeMapping() {
         this.customerColumnMapping.put(CUSTOMER, "cst.identifier");
         this.customerColumnMapping.put(FIRST_NAME, "cst.given_name");
         this.customerColumnMapping.put(MIDDLE_NAME, "cst.middle_name");
         this.customerColumnMapping.put(LAST_NAME, "cst.surname");
         this.customerColumnMapping.put(OFFICE, "cst.assigned_office");

         this.loanColumnMapping.put(LOAN_TERM, "il_cases.term_range_maximum");
         this.loanColumnMapping.put(TIME_UNIT, "il_cases.term_range_temporal_unit");
         this.loanColumnMapping.put(PRINCIPAL, "il_cases.balance_range_maximum");
         this.loanColumnMapping.put(CASE, "il_cases.case_id");

         this.caseColumnMapping.put(LOAN, "cases.identifier");
         this.caseColumnMapping.put(PRODUCT, "cases.product_identifier");
         this.caseColumnMapping.put(STATE, "cases.current_state");
         this.caseColumnMapping.put(DATE_RANGE, "cases.created_on");
         this.caseColumnMapping.put(EMPLOYEE, "cases.created_by");

         this.allColumnMapping.putAll(customerColumnMapping);
         this.allColumnMapping.putAll(loanColumnMapping);
         this.allColumnMapping.putAll(caseColumnMapping);
     }

     private Header createHeader(List<DisplayableField> displayableFields) {
         final Header header = new Header();
         header.setColumnNames(
                 displayableFields
                         .stream()
                         .map(DisplayableField::getName)
                         .collect(Collectors.toList())
         );
         return header;
     }

     private List<Row> buildRows(ReportRequest reportRequest, List<?> customerResultList) {
         final ArrayList<Row> rows = new ArrayList<>();

         customerResultList.forEach(result -> {
             final Row row = new Row();
             row.setValues(new ArrayList<>());

             final String customerIdentifier;

             if (result instanceof Object[]) {
                 final Object[] resultValues;
                 resultValues = (Object[]) result;

                 customerIdentifier = resultValues[0].toString();

                 for (final Object resultValue : resultValues) {
                     final Value value = new Value();
                     if (resultValue != null) {
                         value.setValues(new String[]{resultValue.toString()});
                     } else {
                         value.setValues(new String[]{});
                     }

                     row.getValues().add(value);
                 }
             } else {
                 customerIdentifier = result.toString();

                 final Value value = new Value();
                 value.setValues(new String[]{result.toString()});
                 row.getValues().add(value);
             }

             final Query accountQuery = this.entityManager.createNativeQuery(this.buildLoanAccountQuery(reportRequest, customerIdentifier));
             final List<?> accountResultList = accountQuery.getResultList();

             accountResultList.forEach(accountResult -> {

                 final String caseIdentifier;

                 if (accountResult instanceof Object[]) {
                     final Object[] accountResultValues;
                     accountResultValues = (Object[]) accountResult;

                     caseIdentifier = accountResultValues[0].toString();

                     for (final Object loan: accountResultValues) {
                         final Value value = new Value();
                         if (loan != null) {
                             value.setValues(new String[]{loan.toString()});
                         } else {
                             value.setValues(new String[]{});
                         }

                         row.getValues().add(value);
                     }
                 }else {
                     caseIdentifier = accountResult.toString();

                     final Value value = new Value();
                     value.setValues(new String[]{accountResult.toString()});
                     row.getValues().add(value);
                 }

                 final Query caseQuery = this.entityManager.createNativeQuery(this.buildCaseQuery(reportRequest, caseIdentifier));

                 final List<?> caseResultList = caseQuery.getResultList();

                 caseResultList.forEach(loanCase -> {
                     final Object[] loanCaseResultValues = (Object[]) loanCase;

                     for (final Object loan : loanCaseResultValues) {
                         final Value value = new Value();
                         if (loan != null) {
                             value.setValues(new String[]{loan.toString()});
                         } else {
                             value.setValues(new String[]{});
                         }
                         row.getValues().add(value);
                     }
                 });
             });

             rows.add(row);
         });

         return rows;
     }

     private List<DisplayableField> buildDisplayableFields() {
         return Arrays.asList(
                 DisplayableFieldBuilder.create(CUSTOMER, Type.TEXT).mandatory().build(),
                 DisplayableFieldBuilder.create(FIRST_NAME, Type.TEXT).mandatory().build(),
                 DisplayableFieldBuilder.create(MIDDLE_NAME, Type.TEXT).build(),
                 DisplayableFieldBuilder.create(LAST_NAME, Type.TEXT).mandatory().build(),
                 DisplayableFieldBuilder.create(OFFICE, Type.TEXT).build(),
                 DisplayableFieldBuilder.create(CASE, Type.TEXT).mandatory().build(),
                 DisplayableFieldBuilder.create(PRINCIPAL, Type.TEXT).mandatory().build(),
                 DisplayableFieldBuilder.create(LOAN_TERM, Type.TEXT).mandatory().build(),
                 DisplayableFieldBuilder.create(TIME_UNIT, Type.TEXT).mandatory().build(),

                 DisplayableFieldBuilder.create(LOAN, Type.TEXT).mandatory().build(),
                 DisplayableFieldBuilder.create(STATE, Type.TEXT).mandatory().build(),
                 DisplayableFieldBuilder.create(EMPLOYEE, Type.TEXT).mandatory().build(),
                 DisplayableFieldBuilder.create(PRODUCT, Type.TEXT).mandatory().build(),
                 DisplayableFieldBuilder.create(DATE_RANGE, Type.TEXT).mandatory().build()
         );
     }

     private List<QueryParameter> buildQueryParameters() {
         return Arrays.asList();
     }

     private String buildCustomerQuery(final ReportRequest reportRequest, int pageIndex, int size){
         final StringBuilder query = new StringBuilder("SELECT ");

         final List<DisplayableField> displayableFields = reportRequest.getDisplayableFields();
         final ArrayList<String> columns = new ArrayList<>();
         displayableFields.forEach(displayableField -> {
             final String column;
             column = this.customerColumnMapping.get(displayableField.getName());
             if (column != null) {
                 columns.add(column);
             }
         });

         query.append(columns.stream().collect(Collectors.joining(", ")))
                 .append(" FROM ")
                 .append("maat_customers cst ");

         final List<QueryParameter> queryParameters = reportRequest.getQueryParameters();
         if (!queryParameters.isEmpty()) {
             final ArrayList<String> criteria = new ArrayList<>();
             queryParameters.forEach(queryParameter -> {
                 if((queryParameter.getValue() != null) && !queryParameter.getValue().isEmpty()) {
                     criteria.add(
                             CriteriaBuilder.buildCriteria(this.customerColumnMapping.get(queryParameter.getName()), queryParameter)
                     );
                 }
             });

             if (!criteria.isEmpty()) {
                 query.append(" WHERE ");
                 query.append(criteria.stream().collect(Collectors.joining(" AND ")));
             }

         }
         query.append(" ORDER BY cst.identifier");

         query.append(" LIMIT ");
         query.append(size);
         if (pageIndex > 0) {
             query.append(" OFFSET ");
             query.append(size * pageIndex);
         }

         return query.toString();
     }

     private String buildLoanAccountQuery(final ReportRequest reportRequest, final String customerIdentifier){
         final List<DisplayableField> displayableFields = reportRequest.getDisplayableFields();
         final ArrayList<String> columns = new ArrayList<>();
         displayableFields.forEach(displayableField -> {
             final String column = this.loanColumnMapping.get(displayableField.getName());
             if (column != null) {
                 columns.add(column);
             }
         });

         return "SELECT " + columns.stream().collect(Collectors.joining(", ")) + " " +
                 "FROM bastet_il_cases il_cases " +
                 "LEFT JOIN maat_customers cst on il_cases.customer_identifier = cst.identifier " +
                 "WHERE cst.identifier ='" + customerIdentifier + "' " +
                 "ORDER BY il_cases.case_id";
     }

     private String buildCaseQuery(final ReportRequest reportRequest, final String caseIdentifier){
         final List<DisplayableField> displayableFields = reportRequest.getDisplayableFields();
         final ArrayList<String> columns = new ArrayList<>();
         displayableFields.forEach(displayableField -> {
             final String column = this.caseColumnMapping.get(displayableField.getName());
             if (column != null) {
                 columns.add(column);
             }
         });

         return "SELECT " + columns.stream().collect(Collectors.joining(", ")) + " " +
                 "FROM bastet_cases cases " +
                 "LEFT JOIN bastet_il_cases il_cases on cases.id = il_cases.case_id " +
                 "WHERE il_cases.case_id ='" + caseIdentifier + "' ";
     }
 }
	/*
	* Copyright 2017 The Mifos Initiative.
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/
	package io.mifos.reporting.service.internal.specification;

	import io.mifos.core.api.util.UserContextHolder;
	import io.mifos.core.lang.DateConverter;
	import io.mifos.reporting.api.v1.domain.*;
	import io.mifos.reporting.service.ServiceConstants;
	import io.mifos.reporting.service.spi.*;
	import org.slf4j.Logger;
	import org.springframework.beans.factory.annotation.Autowired;
	import org.springframework.beans.factory.annotation.Qualifier;

	import javax.persistence.EntityManager;
	import javax.persistence.Query;
	import java.time.Clock;
	import java.time.LocalDateTime;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.HashMap;
	import java.util.List;
	import java.util.stream.Collectors;

	@Report(category = "Loan", identifier = "Listing")
	public class LoanListReportSpecification implements ReportSpecification {


	private static final String CUSTOMER = "Customer";
	private static final String FIRST_NAME = "First Name";
	private static final String MIDDLE_NAME = "Middle Name";
	private static final String LAST_NAME = "Last Name";
	private static final String LOAN_TERM = "Loan Term";
	private static final String TIME_UNIT = "Time Unit";
	private static final String OFFICE = "Office";
	private static final String PRINCIPAL = "Principal";
	private static final String CASE = "Case Id";

	private static final String LOAN = "Loan";
	private static final String PRODUCT = "Type";
	private static final String STATE = "State";
	private static final String DATE_RANGE = "Created On";
	private static final String EMPLOYEE = "Created By";

	private final Logger logger;

	private final EntityManager entityManager;

	private final HashMap<String, String> customerColumnMapping = new HashMap<>();
	private final HashMap<String, String> loanColumnMapping = new HashMap<>();
	private final HashMap<String, String> caseColumnMapping = new HashMap<>();
	private final HashMap<String, String> allColumnMapping = new HashMap<>();

	@Autowired
	public LoanListReportSpecification(@Qualifier(ServiceConstants.LOGGER_NAME) final Logger logger,
	final EntityManager entityManager) {
	super();
	this.logger = logger;
	this.entityManager = entityManager;
	this.initializeMapping();
	}

	@Override
	public ReportDefinition getReportDefinition() {
	final ReportDefinition reportDefinition = new ReportDefinition();
	reportDefinition.setIdentifier("Listing");
	reportDefinition.setName("Loan Account Listing");
	reportDefinition.setDescription("List of all loan accounts.");
	reportDefinition.setQueryParameters(this.buildQueryParameters());
	reportDefinition.setDisplayableFields(this.buildDisplayableFields());
	return reportDefinition;
	}

	@Override
	public ReportPage generateReport(ReportRequest reportRequest, int pageIndex, int size) {
	final ReportDefinition reportDefinition = this.getReportDefinition();
	this.logger.info("Generating report {0}.", reportDefinition.getIdentifier());

	final ReportPage reportPage = new ReportPage();
	reportPage.setName(reportDefinition.getName());
	reportPage.setDescription(reportDefinition.getDescription());
	reportPage.setHeader(this.createHeader(reportRequest.getDisplayableFields()));

	final Query customerQuery;
	customerQuery = this.entityManager.createNativeQuery(this.buildCustomerQuery(reportRequest, pageIndex, size));
	final List<?> customerResultList = customerQuery.getResultList();
	reportPage.setRows(this.buildRows(reportRequest, customerResultList));

	reportPage.setHasMore(
	!this.entityManager.createNativeQuery(this.buildCustomerQuery(reportRequest, pageIndex + 1, size))
	.getResultList().isEmpty()
	);

	reportPage.setGeneratedBy(UserContextHolder.checkedGetUser());
	reportPage.setGeneratedOn(DateConverter.toIsoString(LocalDateTime.now(Clock.systemUTC())));
	return reportPage;
	}

	@Override
	public void validate(ReportRequest reportRequest) throws IllegalArgumentException {
	final ArrayList<String> unknownFields = new ArrayList<>();
	reportRequest.getQueryParameters().forEach(queryParameter -> {
	if (!this.allColumnMapping.keySet().contains(queryParameter.getName())) {
	unknownFields.add(queryParameter.getName());
	}
	});

	reportRequest.getDisplayableFields().forEach(displayableField -> {
	if (!this.allColumnMapping.keySet().contains(displayableField.getName())) {
	unknownFields.add(displayableField.getName());
	}
	});

	if (!unknownFields.isEmpty()) {
	throw new IllegalArgumentException(
	"Unspecified fields requested: " + unknownFields.stream().collect(Collectors.joining(", "))
	);
	}
	}

	private void initializeMapping() {
	this.customerColumnMapping.put(CUSTOMER, "cst.identifier");
	this.customerColumnMapping.put(FIRST_NAME, "cst.given_name");
	this.customerColumnMapping.put(MIDDLE_NAME, "cst.middle_name");
	this.customerColumnMapping.put(LAST_NAME, "cst.surname");
	this.customerColumnMapping.put(OFFICE, "cst.assigned_office");

	this.loanColumnMapping.put(LOAN_TERM, "il_cases.term_range_maximum");
	this.loanColumnMapping.put(TIME_UNIT, "il_cases.term_range_temporal_unit");
	this.loanColumnMapping.put(PRINCIPAL, "il_cases.balance_range_maximum");
	this.loanColumnMapping.put(CASE, "il_cases.case_id");

	this.caseColumnMapping.put(LOAN, "cases.identifier");
	this.caseColumnMapping.put(PRODUCT, "cases.product_identifier");
	this.caseColumnMapping.put(STATE, "cases.current_state");
	this.caseColumnMapping.put(DATE_RANGE, "cases.created_on");
	this.caseColumnMapping.put(EMPLOYEE, "cases.created_by");

	this.allColumnMapping.putAll(customerColumnMapping);
	this.allColumnMapping.putAll(loanColumnMapping);
	this.allColumnMapping.putAll(caseColumnMapping);
	}

	private Header createHeader(List<DisplayableField> displayableFields) {
	final Header header = new Header();
	header.setColumnNames(
	displayableFields
	.stream()
	.map(DisplayableField::getName)
	.collect(Collectors.toList())
	);
	return header;
	}

	private List<Row> buildRows(ReportRequest reportRequest, List<?> customerResultList) {
	final ArrayList<Row> rows = new ArrayList<>();

	customerResultList.forEach(result -> {
	final Row row = new Row();
	row.setValues(new ArrayList<>());

	final String customerIdentifier;

	if (result instanceof Object[]) {
	final Object[] resultValues;
	resultValues = (Object[]) result;

	customerIdentifier = resultValues[0].toString();

	for (final Object resultValue : resultValues) {
	final Value value = new Value();
	if (resultValue != null) {
	value.setValues(new String[]{resultValue.toString()});
	} else {
	value.setValues(new String[]{});
	}

	row.getValues().add(value);
	}
	} else {
	customerIdentifier = result.toString();

	final Value value = new Value();
	value.setValues(new String[]{result.toString()});
	row.getValues().add(value);
	}

	final Query accountQuery = this.entityManager.createNativeQuery(this.buildLoanAccountQuery(reportRequest, customerIdentifier));
	final List<?> accountResultList = accountQuery.getResultList();

	accountResultList.forEach(accountResult -> {

	final String caseIdentifier;

	if (accountResult instanceof Object[]) {
	final Object[] accountResultValues;
	accountResultValues = (Object[]) accountResult;

	caseIdentifier = accountResultValues[0].toString();

	for (final Object loan: accountResultValues) {
	final Value value = new Value();
	if (loan != null) {
	value.setValues(new String[]{loan.toString()});
	} else {
	value.setValues(new String[]{});
	}

	row.getValues().add(value);
	}
	}else {
	caseIdentifier = accountResult.toString();

	final Value value = new Value();
	value.setValues(new String[]{accountResult.toString()});
	row.getValues().add(value);
	}

	final Query caseQuery = this.entityManager.createNativeQuery(this.buildCaseQuery(reportRequest, caseIdentifier));

	final List<?> caseResultList = caseQuery.getResultList();

	caseResultList.forEach(loanCase -> {
	final Object[] loanCaseResultValues = (Object[]) loanCase;

	for (final Object loan : loanCaseResultValues) {
	final Value value = new Value();
	if (loan != null) {
	value.setValues(new String[]{loan.toString()});
	} else {
	value.setValues(new String[]{});
	}
	row.getValues().add(value);
	}
	});
	});

	rows.add(row);
	});

	return rows;
	}

	private List<DisplayableField> buildDisplayableFields() {
	return Arrays.asList(
	DisplayableFieldBuilder.create(CUSTOMER, Type.TEXT).mandatory().build(),
	DisplayableFieldBuilder.create(FIRST_NAME, Type.TEXT).mandatory().build(),
	DisplayableFieldBuilder.create(MIDDLE_NAME, Type.TEXT).build(),
	DisplayableFieldBuilder.create(LAST_NAME, Type.TEXT).mandatory().build(),
	DisplayableFieldBuilder.create(OFFICE, Type.TEXT).build(),
	DisplayableFieldBuilder.create(CASE, Type.TEXT).mandatory().build(),
	DisplayableFieldBuilder.create(PRINCIPAL, Type.TEXT).mandatory().build(),
	DisplayableFieldBuilder.create(LOAN_TERM, Type.TEXT).mandatory().build(),
	DisplayableFieldBuilder.create(TIME_UNIT, Type.TEXT).mandatory().build(),

	DisplayableFieldBuilder.create(LOAN, Type.TEXT).mandatory().build(),
	DisplayableFieldBuilder.create(STATE, Type.TEXT).mandatory().build(),
	DisplayableFieldBuilder.create(EMPLOYEE, Type.TEXT).mandatory().build(),
	DisplayableFieldBuilder.create(PRODUCT, Type.TEXT).mandatory().build(),
	DisplayableFieldBuilder.create(DATE_RANGE, Type.TEXT).mandatory().build()
	);
	}

	private List<QueryParameter> buildQueryParameters() {
	return Arrays.asList();
	}

	private String buildCustomerQuery(final ReportRequest reportRequest, int pageIndex, int size){
	final StringBuilder query = new StringBuilder("SELECT ");

	final List<DisplayableField> displayableFields = reportRequest.getDisplayableFields();
	final ArrayList<String> columns = new ArrayList<>();
	displayableFields.forEach(displayableField -> {
	final String column;
	column = this.customerColumnMapping.get(displayableField.getName());
	if (column != null) {
	columns.add(column);
	}
	});

	query.append(columns.stream().collect(Collectors.joining(", ")))
	.append(" FROM ")
	.append("maat_customers cst ");

	final List<QueryParameter> queryParameters = reportRequest.getQueryParameters();
	if (!queryParameters.isEmpty()) {
	final ArrayList<String> criteria = new ArrayList<>();
	queryParameters.forEach(queryParameter -> {
	if((queryParameter.getValue() != null) && !queryParameter.getValue().isEmpty()) {
	criteria.add(
	CriteriaBuilder.buildCriteria(this.customerColumnMapping.get(queryParameter.getName()), queryParameter)
	);
	}
	});

	if (!criteria.isEmpty()) {
	query.append(" WHERE ");
	query.append(criteria.stream().collect(Collectors.joining(" AND ")));
	}

	}
	query.append(" ORDER BY cst.identifier");

	query.append(" LIMIT ");
	query.append(size);
	if (pageIndex > 0) {
	query.append(" OFFSET ");
	query.append(size * pageIndex);
	}

	return query.toString();
	}

	private String buildLoanAccountQuery(final ReportRequest reportRequest, final String customerIdentifier){
	final List<DisplayableField> displayableFields = reportRequest.getDisplayableFields();
	final ArrayList<String> columns = new ArrayList<>();
	displayableFields.forEach(displayableField -> {
	final String column = this.loanColumnMapping.get(displayableField.getName());
	if (column != null) {
	columns.add(column);
	}
	});

	return "SELECT " + columns.stream().collect(Collectors.joining(", ")) + " " +
	"FROM bastet_il_cases il_cases " +
	"LEFT JOIN maat_customers cst on il_cases.customer_identifier = cst.identifier " +
	"WHERE cst.identifier ='" + customerIdentifier + "' " +
	"ORDER BY il_cases.case_id";
	}

	private String buildCaseQuery(final ReportRequest reportRequest, final String caseIdentifier){
	final List<DisplayableField> displayableFields = reportRequest.getDisplayableFields();
	final ArrayList<String> columns = new ArrayList<>();
	displayableFields.forEach(displayableField -> {
	final String column = this.caseColumnMapping.get(displayableField.getName());
	if (column != null) {
	columns.add(column);
	}
	});

	return "SELECT " + columns.stream().collect(Collectors.joining(", ")) + " " +
	"FROM bastet_cases cases " +
	"LEFT JOIN bastet_il_cases il_cases on cases.id = il_cases.case_id " +
	"WHERE il_cases.case_id ='" + caseIdentifier + "' ";
	}
	}