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package org.onap.sdc.dcae.rule.editor.translators;
import org.onap.sdc.dcae.composition.restmodels.ruleeditor.*;
import org.onap.sdc.dcae.rule.editor.enums.ConditionTypeEnum;
import org.onap.sdc.dcae.rule.editor.enums.OperatorTypeEnum;
import org.onap.sdc.dcae.rule.editor.utils.ValidationUtils;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
public class ConditionGroupTranslator implements IRuleElementTranslator<ConditionGroup> {
private static ConditionGroupTranslator conditionGroupTranslator = new ConditionGroupTranslator();
public static ConditionGroupTranslator getInstance() {
return conditionGroupTranslator;
}
private ConditionGroupTranslator(){}
public Translation translateToHpJson(ConditionGroup conditionGroup) {
String clazz = ConditionTypeEnum.getTypeByName(conditionGroup.getType()).getFilterClass();
FiltersTranslation translation = new FiltersTranslation(clazz, conditionGroup.getChildren().stream()
.map(this::getTranslation)
.collect(Collectors.toList()));
flattenNestedFilters(translation, clazz);
return translation;
}
private IRuleElementTranslator getConditionTranslator(BaseCondition condition){
return condition instanceof ConditionGroup ? ConditionGroupTranslator.getInstance() :
ValidationUtils.validateNotEmpty(OperatorTypeEnum.getTypeByName(((Condition)condition).getOperator()).getModifiedType()) ? FieldConditionTranslator.getInstance() : ConditionTranslator.getInstance();
}
private Translation getTranslation(BaseCondition condition) {
return getConditionTranslator(condition).translateToHpJson(condition);
}
private void flattenNestedFilters(FiltersTranslation filtersTranslation, String clazz) {
Map<Boolean, List<Translation>> partitioned = filtersTranslation.filters.stream().collect(Collectors.partitioningBy(f -> clazz.equals(((ProcessorTranslation) f).clazz)));
filtersTranslation.filters.removeAll(partitioned.get(Boolean.TRUE));
filtersTranslation.filters.addAll(partitioned.get(Boolean.TRUE).stream().map(f -> ((FiltersTranslation) f).filters).flatMap(List::stream).collect(Collectors.toList()));
}
}
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