001// --------------------------------------------------------------------------------
002// Copyright 2002-2024 Echo Three, LLC
003//
004// Licensed under the Apache License, Version 2.0 (the "License");
005// you may not use this file except in compliance with the License.
006// You may obtain a copy of the License at
007//
008//     http://www.apache.org/licenses/LICENSE-2.0
009//
010// Unless required by applicable law or agreed to in writing, software
011// distributed under the License is distributed on an "AS IS" BASIS,
012// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013// See the License for the specific language governing permissions and
014// limitations under the License.
015// --------------------------------------------------------------------------------
016
017package com.echothree.model.control.rating.server.logic;
018
019import com.echothree.model.control.rating.common.exception.UnknownRatingNameException;
020import com.echothree.model.control.rating.server.control.RatingControl;
021import com.echothree.model.data.rating.server.entity.Rating;
022import com.echothree.util.common.message.ExecutionErrors;
023import com.echothree.util.server.control.BaseLogic;
024import com.echothree.util.server.message.ExecutionErrorAccumulator;
025import com.echothree.util.server.persistence.Session;
026
027public class RatingLogic
028        extends BaseLogic {
029
030    private RatingLogic() {
031        super();
032    }
033
034    private static class RatingLogicHolder {
035        static RatingLogic instance = new RatingLogic();
036    }
037
038    public static RatingLogic getInstance() {
039        return RatingLogicHolder.instance;
040    }
041    
042    public Rating getRatingByName(final ExecutionErrorAccumulator eea, final String ratingName) {
043        var ratingControl = Session.getModelController(RatingControl.class);
044        Rating rating = ratingControl.getRatingByName(ratingName);
045
046        if(rating == null) {
047            handleExecutionError(UnknownRatingNameException.class, eea, ExecutionErrors.UnknownRatingName.name(), ratingName);
048        }
049
050        return rating;
051    }
052    
053}