org.sakaiproject.assignment.api.model.AssignmentSupplementItemWithAttachment Maven / Gradle / Ivy

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/**********************************************************************************
 * $URL:  $
 * $Id:  $
 ***********************************************************************************
 *
 * Copyright (c) 2003, 2004, 2005, 2006, 2008 The Sakai Foundation
 *
 * Licensed under the Educational Community License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.opensource.org/licenses/ECL-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 **********************************************************************************/
package org.sakaiproject.assignment.api.model;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import javax.persistence.*;

import lombok.Data;
import lombok.NoArgsConstructor;
import org.sakaiproject.entity.api.Reference;
import org.sakaiproject.entity.cover.EntityManager;

/**
 * The base class for SupplementItem which has attachment(s)
 *
 * @author zqian
 */

@Entity
@Table(name = "ASN_SUP_ITEM_T")
@Inheritance(strategy = InheritanceType.JOINED)
@Data
@NoArgsConstructor
public class AssignmentSupplementItemWithAttachment {

    @Id
    @Column(name = "ID")
    @GeneratedValue(strategy = GenerationType.AUTO, generator = "assignment_supplemental_item_sequence")
    @SequenceGenerator(name = "assignment_supplemental_item_sequence", sequenceName = "ASN_SUP_ITEM_S")
    private Long id;

    @OneToMany(mappedBy = "assignmentSupplementItemWithAttachment", orphanRemoval = true)
    private Set attachmentSet;

    @Transient
    public Set getAttachmentObjectSet() {
        Set rv = new HashSet();
        Set attachmentSet = getAttachmentSet();
        for (Iterator iAttachmentSet = attachmentSet.iterator(); iAttachmentSet.hasNext(); ) {
            AssignmentSupplementItemAttachment attachment = iAttachmentSet.next();
            rv.add(EntityManager.newReference(attachment.getAttachmentId()));
        }
        return rv;
    }
}