001// --------------------------------------------------------------------------------
002// Copyright 2002-2026 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.letter.server.transfer;
018
019import javax.inject.Inject;
020import com.echothree.model.control.chain.server.control.ChainControl;
021import com.echothree.model.control.letter.common.transfer.QueuedLetterTransfer;
022import com.echothree.model.control.letter.server.control.LetterControl;
023import com.echothree.model.data.letter.server.entity.QueuedLetter;
024import com.echothree.model.data.user.server.entity.UserVisit;
025import javax.enterprise.context.RequestScoped;
026
027@RequestScoped
028public class QueuedLetterTransferCache
029        extends BaseLetterTransferCache<QueuedLetter, QueuedLetterTransfer> {
030
031    @Inject
032    ChainControl chainControl;
033
034    @Inject
035    LetterControl letterControl;
036
037    /** Creates a new instance of QueuedLetterTransferCache */
038    protected QueuedLetterTransferCache() {
039        super();
040    }
041    
042    public QueuedLetterTransfer getQueuedLetterTransfer(UserVisit userVisit, QueuedLetter queuedLetter) {
043        var queuedLetterTransfer = get(queuedLetter);
044        
045        if(queuedLetterTransfer == null) {
046            var chainInstance = chainControl.getChainInstanceTransfer(userVisit, queuedLetter.getChainInstance());
047            var letter = letterControl.getLetterTransfer(userVisit, queuedLetter.getLetter());
048            
049            queuedLetterTransfer = new QueuedLetterTransfer(chainInstance, letter);
050            put(userVisit, queuedLetter, queuedLetterTransfer);
051        }
052        
053        return queuedLetterTransfer;
054    }
055    
056}