| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.fineract.portfolio.creditscorecard.service; |
| |
| import com.google.gson.JsonArray; |
| import com.google.gson.JsonElement; |
| import com.google.gson.JsonObject; |
| import java.math.BigDecimal; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Locale; |
| import org.apache.fineract.infrastructure.core.api.JsonCommand; |
| import org.apache.fineract.infrastructure.core.serialization.FromJsonHelper; |
| import org.apache.fineract.portfolio.creditscorecard.annotation.ScorecardService; |
| import org.apache.fineract.portfolio.creditscorecard.domain.CreditScorecard; |
| import org.apache.fineract.portfolio.creditscorecard.domain.CreditScorecardFeature; |
| import org.apache.fineract.portfolio.creditscorecard.domain.FeatureCriteria; |
| import org.apache.fineract.portfolio.creditscorecard.domain.FeatureCriteriaScore; |
| import org.apache.fineract.portfolio.creditscorecard.domain.MLScorecard; |
| import org.apache.fineract.portfolio.creditscorecard.domain.MLScorecardFields; |
| import org.apache.fineract.portfolio.creditscorecard.domain.RuleBasedScorecard; |
| import org.apache.fineract.portfolio.creditscorecard.domain.StatScorecard; |
| import org.apache.fineract.portfolio.loanproduct.domain.LoanProduct; |
| import org.apache.fineract.portfolio.loanproduct.domain.LoanProductScorecardFeature; |
| import org.apache.fineract.portfolio.loanproduct.domain.LoanProductScorecardFeatureRepositoryWrapper; |
| import org.springframework.beans.factory.annotation.Autowired; |
| |
| @ScorecardService(name = "CreditScorecardAssembler") |
| public class CreditScorecardAssemblerImpl implements CreditScorecardAssembler { |
| |
| private final FromJsonHelper fromApiJsonHelper; |
| private final CreditScorecardReadPlatformService readPlatformService; |
| private final LoanProductScorecardFeatureRepositoryWrapper productFeatureRepository; |
| |
| @Autowired |
| public CreditScorecardAssemblerImpl(final FromJsonHelper fromApiJsonHelper, |
| final CreditScorecardReadPlatformService readPlatformService, |
| final LoanProductScorecardFeatureRepositoryWrapper productFeatureRepository) { |
| this.fromApiJsonHelper = fromApiJsonHelper; |
| this.readPlatformService = readPlatformService; |
| this.productFeatureRepository = productFeatureRepository; |
| } |
| |
| @Override |
| public CreditScorecard assembleFrom(final JsonElement element) { |
| CreditScorecard creditScorecard = null; |
| |
| if (element.isJsonObject()) { |
| |
| final String scoringMethod = this.fromApiJsonHelper.extractStringNamed("scoringMethod", element); |
| final String scoringModel = this.fromApiJsonHelper.extractStringNamed("scoringModel", element); |
| |
| RuleBasedScorecard ruleBasedScorecard = null; |
| StatScorecard statScorecard = null; |
| MLScorecard mlScorecard = null; |
| |
| if (scoringMethod.equalsIgnoreCase("ruleBased")) { |
| ruleBasedScorecard = this.assembleRuleBasedScorecard(element); |
| } |
| |
| if (scoringMethod.equalsIgnoreCase("ml")) { |
| mlScorecard = this.assembleMLScorecard(element); |
| } |
| |
| if (scoringMethod.equalsIgnoreCase("stat")) { |
| statScorecard = this.assembleStatScorecard(element); |
| } |
| |
| creditScorecard = new CreditScorecard(scoringMethod, scoringModel, ruleBasedScorecard, statScorecard, mlScorecard); |
| } |
| |
| return creditScorecard; |
| } |
| |
| public RuleBasedScorecard assembleRuleBasedScorecard(final JsonElement element) { |
| |
| final RuleBasedScorecard ruleBasedScorecard = new RuleBasedScorecard(); |
| |
| final List<FeatureCriteriaScore> criteriaScores = new ArrayList<>(); |
| |
| if (element.isJsonObject()) { |
| final JsonObject topLevelJsonElement = element.getAsJsonObject(); |
| |
| final String dateFormat = this.fromApiJsonHelper.extractDateFormatParameter(topLevelJsonElement); |
| final Locale locale = this.fromApiJsonHelper.extractLocaleParameter(topLevelJsonElement); |
| |
| final String rbScorecardParameterName = "ruleBasedScorecard"; |
| if (topLevelJsonElement.has(rbScorecardParameterName) && topLevelJsonElement.get(rbScorecardParameterName).isJsonObject()) { |
| final JsonObject rbScorecardElement = topLevelJsonElement.getAsJsonObject(rbScorecardParameterName); |
| |
| final String criteriaScoresParameterName = "criteriaScores"; |
| if (rbScorecardElement.has(criteriaScoresParameterName) |
| && rbScorecardElement.get(criteriaScoresParameterName).isJsonArray()) { |
| final JsonArray array = rbScorecardElement.get(criteriaScoresParameterName).getAsJsonArray(); |
| for (int i = 0; i < array.size(); i++) { |
| |
| final JsonObject criteriaScoreElement = array.get(i).getAsJsonObject(); |
| |
| final Long featureId = this.fromApiJsonHelper.extractLongNamed("featureId", criteriaScoreElement); |
| final String value = this.fromApiJsonHelper.extractStringNamed("value", criteriaScoreElement); |
| |
| final LoanProductScorecardFeature lpScorecardFeature = this.productFeatureRepository |
| .findOneWithNotFoundDetection(featureId); |
| |
| criteriaScores.add(new FeatureCriteriaScore(lpScorecardFeature, value)); |
| |
| } |
| |
| } else { |
| return null; |
| |
| } |
| } |
| } |
| |
| ruleBasedScorecard.setCriteriaScores(criteriaScores); |
| |
| return ruleBasedScorecard; |
| } |
| |
| public StatScorecard assembleStatScorecard(final JsonElement element) { |
| |
| StatScorecard statScorecard = null; |
| |
| if (element.isJsonObject()) { |
| |
| final JsonObject topLevelJsonElement = element.getAsJsonObject(); |
| |
| final String dateFormat = this.fromApiJsonHelper.extractDateFormatParameter(topLevelJsonElement); |
| final Locale locale = this.fromApiJsonHelper.extractLocaleParameter(topLevelJsonElement); |
| |
| final String statScorecardParameterName = "statScorecard"; |
| if (topLevelJsonElement.has(statScorecardParameterName) && topLevelJsonElement.get(statScorecardParameterName).isJsonObject()) { |
| final JsonObject scorecardDataElement = topLevelJsonElement.getAsJsonObject(statScorecardParameterName); |
| |
| statScorecard = new StatScorecard( |
| new MLScorecardFields(this.fromApiJsonHelper.extractIntegerWithLocaleNamed("age", scorecardDataElement), |
| this.fromApiJsonHelper.extractStringNamed("sex", scorecardDataElement), |
| this.fromApiJsonHelper.extractStringNamed("job", scorecardDataElement), |
| this.fromApiJsonHelper.extractStringNamed("housing", scorecardDataElement), |
| this.fromApiJsonHelper.extractBigDecimalNamed("creditAmount", scorecardDataElement, locale), |
| this.fromApiJsonHelper.extractIntegerNamed("duration", scorecardDataElement, locale), |
| this.fromApiJsonHelper.extractStringNamed("purpose", scorecardDataElement))); |
| } |
| } |
| return statScorecard; |
| } |
| |
| public MLScorecard assembleMLScorecard(final JsonElement element) { |
| |
| MLScorecard mlScorecard = null; |
| |
| if (element.isJsonObject()) { |
| |
| final JsonObject topLevelJsonElement = element.getAsJsonObject(); |
| |
| final String dateFormat = this.fromApiJsonHelper.extractDateFormatParameter(topLevelJsonElement); |
| final Locale locale = this.fromApiJsonHelper.extractLocaleParameter(topLevelJsonElement); |
| |
| final String mlScorecardParameterName = "mlScorecard"; |
| if (topLevelJsonElement.has(mlScorecardParameterName) && topLevelJsonElement.get(mlScorecardParameterName).isJsonObject()) { |
| final JsonObject scorecardDataElement = topLevelJsonElement.getAsJsonObject(mlScorecardParameterName); |
| |
| mlScorecard = new MLScorecard( |
| new MLScorecardFields(this.fromApiJsonHelper.extractIntegerWithLocaleNamed("age", scorecardDataElement), |
| this.fromApiJsonHelper.extractStringNamed("sex", scorecardDataElement), |
| this.fromApiJsonHelper.extractStringNamed("job", scorecardDataElement), |
| this.fromApiJsonHelper.extractStringNamed("housing", scorecardDataElement), |
| this.fromApiJsonHelper.extractBigDecimalNamed("creditAmount", scorecardDataElement, locale), |
| this.fromApiJsonHelper.extractIntegerNamed("duration", scorecardDataElement, locale), |
| this.fromApiJsonHelper.extractStringNamed("purpose", scorecardDataElement))); |
| } |
| } |
| return mlScorecard; |
| } |
| |
| |
| @Override |
| public List<LoanProductScorecardFeature> assembleListOfProductScoringFeatures(final JsonCommand command, LoanProduct loanProduct) { |
| |
| final List<LoanProductScorecardFeature> loanProductFeatures = new ArrayList<>(); |
| |
| // JsonCommand incentivesCommand = JsonCommand.fromExistingCommand(command, incentiveElement); |
| // chartSlab.slabFields().validateChartSlabPlatformRules(chartSlabsCommand, baseDataValidator, locale); |
| |
| if (command.parameterExists("scorecardFeatures")) { |
| final JsonArray featuresArray = command.arrayOfParameterNamed("scorecardFeatures"); |
| if (featuresArray != null) { |
| for (int i = 0; i < featuresArray.size(); i++) { |
| |
| final JsonObject jsonObject = featuresArray.get(i).getAsJsonObject(); |
| if (jsonObject.has("featureId")) { |
| final Long id = jsonObject.get("featureId").getAsLong(); |
| |
| final BigDecimal weightage = jsonObject.get("weightage").getAsBigDecimal(); |
| final Integer greenMin = jsonObject.get("greenMin").getAsInt(); |
| final Integer greenMax = jsonObject.get("greenMax").getAsInt(); |
| final Integer amberMin = jsonObject.get("amberMin").getAsInt(); |
| final Integer amberMax = jsonObject.get("amberMax").getAsInt(); |
| final Integer redMin = jsonObject.get("redMin").getAsInt(); |
| final Integer redMax = jsonObject.get("redMax").getAsInt(); |
| |
| final List<FeatureCriteria> criteria = this |
| .assembleListOfProductScoringFeatureCriteriaScores(jsonObject.get("criteriaScores").getAsJsonArray()); |
| |
| final CreditScorecardFeature feature = this.readPlatformService.findOneFeatureWithNotFoundDetection(id); |
| |
| final LoanProductScorecardFeature loanProductFeature = new LoanProductScorecardFeature(feature, weightage, greenMin, |
| greenMax, amberMin, amberMax, redMin, redMax); |
| |
| loanProductFeature.setFeatureCriteria(criteria); |
| loanProductFeatures.add(loanProductFeature); |
| } |
| } |
| } |
| } |
| |
| return loanProductFeatures; |
| } |
| |
| private List<FeatureCriteria> assembleListOfProductScoringFeatureCriteriaScores(final JsonArray jsonArray) { |
| |
| final List<FeatureCriteria> featureCriteria = new ArrayList<>(); |
| |
| if (jsonArray != null) { |
| for (int i = 0; i < jsonArray.size(); i++) { |
| |
| final JsonObject jsonObject = jsonArray.get(i).getAsJsonObject(); |
| final BigDecimal score = jsonObject.get("score").getAsBigDecimal(); |
| final String scoreCriteria = jsonObject.get("criteria").getAsString(); |
| |
| featureCriteria.add(new FeatureCriteria(scoreCriteria, score)); |
| } |
| } |
| |
| return featureCriteria; |
| } |
| |
| } |
