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package org.onap.sdc.dcae.rule.editor.translators;
import org.onap.sdc.dcae.composition.restmodels.ruleeditor.Condition;
import org.onap.sdc.dcae.rule.editor.enums.OperatorTypeEnum;
import java.util.List;
public class FieldConditionTranslator implements IRuleElementTranslator<Condition> {
private static FieldConditionTranslator fieldConditionTranslator = new FieldConditionTranslator();
public static FieldConditionTranslator getInstance() {
return fieldConditionTranslator;
}
private FieldConditionTranslator(){}
private class FieldFilterTranslation extends ProcessorTranslation {
private String field;
private String value;
private FieldFilterTranslation(Condition condition, OperatorTypeEnum operatorType) {
clazz = operatorType.getType();
field = condition.getLeft();
value = condition.getRight().get(0);
}
}
private class UnaryFilterTranslation extends ProcessorTranslation {
private String field;
private boolean emptyIsAssigned;
private UnaryFilterTranslation(Condition condition, OperatorTypeEnum operatorType) {
clazz = operatorType.getType();
field = condition.getLeft();
emptyIsAssigned = condition.isEmptyIsAssigned();
}
}
private class MultiFieldFilterTranslation extends ProcessorTranslation {
private String field;
private List<String> values;
private MultiFieldFilterTranslation(Condition condition, OperatorTypeEnum operatorType) {
field = condition.getLeft();
values = condition.getRight();
clazz = operatorType.getModifiedType().getType();
}
}
public Object translateToHpJson(Condition condition) {
OperatorTypeEnum operatorType = OperatorTypeEnum.getTypeByName(condition.getOperator());
if(OperatorTypeEnum.UNASSIGNED == operatorType || OperatorTypeEnum.ASSIGNED == operatorType) {
return new UnaryFilterTranslation(condition, operatorType);
}
return 1 == condition.getRight().size() && !alwaysUseMultipleRightValues(operatorType)? new FieldFilterTranslation(condition, operatorType) : new MultiFieldFilterTranslation(condition, operatorType);
}
private boolean alwaysUseMultipleRightValues(OperatorTypeEnum operatorType) {
return operatorType.equals(operatorType.getModifiedType());
}
}
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