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.core.server.transfer;
018
019import com.echothree.model.control.core.common.transfer.LinkTransfer;
020import com.echothree.model.data.core.server.entity.Link;
021import com.echothree.model.data.user.server.entity.UserVisit;
022import javax.enterprise.context.RequestScoped;
023import javax.inject.Inject;
024
025@RequestScoped
026public class LinkTransferCache
027        extends BaseCoreTransferCache<Link, LinkTransfer> {
028
029    /** Creates a new instance of LinkTransferCache */
030    protected LinkTransferCache() {
031        super();
032    }
033
034    public LinkTransfer getTransfer(UserVisit userVisit, Link link) {
035        var linkTransfer = get(link);
036
037        if(linkTransfer == null) {
038            linkTransfer = new LinkTransfer(null, null, null);
039
040            // Cache before following endpoints or the LinkType, which can include this Link again.
041            put(userVisit, link, linkTransfer);
042
043            linkTransfer.setLinkType(linkTypeControl.getLinkTypeTransfer(userVisit, link.getLinkType()));
044            linkTransfer.setSourceEntityInstance(entityInstanceControl.getEntityInstanceTransfer(userVisit, link.getSourceEntityInstance(), false, false, false, false));
045            linkTransfer.setTargetEntityInstance(entityInstanceControl.getEntityInstanceTransfer(userVisit, link.getTargetEntityInstance(), false, false, false, false));
046        }
047
048        return linkTransfer;
049    }
050
051}