001// --------------------------------------------------------------------------------
002// Copyright 2002-2025 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 com.echothree.model.control.chain.server.control.ChainControl;
020import com.echothree.model.control.letter.common.transfer.QueuedLetterTransfer;
021import com.echothree.model.control.letter.server.control.LetterControl;
022import com.echothree.model.data.letter.server.entity.QueuedLetter;
023import com.echothree.model.data.user.server.entity.UserVisit;
024import com.echothree.util.server.persistence.Session;
025import javax.enterprise.context.RequestScoped;
026
027@RequestScoped
028public class QueuedLetterTransferCache
029        extends BaseLetterTransferCache<QueuedLetter, QueuedLetterTransfer> {
030    
031    ChainControl chainControl = Session.getModelController(ChainControl.class);
032    LetterControl letterControl = Session.getModelController(LetterControl.class);
033
034    /** Creates a new instance of QueuedLetterTransferCache */
035    protected QueuedLetterTransferCache() {
036        super();
037    }
038    
039    public QueuedLetterTransfer getQueuedLetterTransfer(UserVisit userVisit, QueuedLetter queuedLetter) {
040        var queuedLetterTransfer = get(queuedLetter);
041        
042        if(queuedLetterTransfer == null) {
043            var chainInstance = chainControl.getChainInstanceTransfer(userVisit, queuedLetter.getChainInstance());
044            var letter = letterControl.getLetterTransfer(userVisit, queuedLetter.getLetter());
045            
046            queuedLetterTransfer = new QueuedLetterTransfer(chainInstance, letter);
047            put(userVisit, queuedLetter, queuedLetterTransfer);
048        }
049        
050        return queuedLetterTransfer;
051    }
052    
053}