/*
* Copyright 2002-2007 the original author or authors.
*
* Licensed under the Apache 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.apache.org/licenses/LICENSE-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.internna.iwebmvc.parsers;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.internna.iwebmvc.dao.DAO;
import org.internna.iwebmvc.model.Document;
import org.internna.iwebmvc.model.MultiDocument;
import org.internna.iwebmvc.model.UUID;
import org.springframework.util.CollectionUtils;
/**
* Parses @{@link MultiDocument} entities.
*
* @author Jose Noheda
* @since 2.0
*/
public final class MultiDocumentParser extends AbstractEntityParser<MultiDocument> {
private DocumentParser documentParser;
public MultiDocumentParser(DAO dao, DocumentParser documentParser) {
super(MultiDocument.class, dao);
this.documentParser = documentParser;
}
private void purge(MultiDocument md) {
Set<Document> docs = md.getDocuments();
if (!CollectionUtils.isEmpty(docs)) {
Set<Document> keep = new HashSet<Document>();
Set<Document> remove = new HashSet<Document>();
for (Document doc : docs)
if ((doc != null) && (doc.getId() != null)) {
if (md.getId() == null) {
Document kept = documentParser.parse(doc);
kept.setDocumentGroup(md);
keep.add(kept);
}
} else remove.add(doc);
md.removeDocuments(remove);
if (md.getId() == null) md.setDocuments(keep);
}
}
@Override public MultiDocument parse(MultiDocument up) {
if (up != null) {
purge(up);
if (CollectionUtils.isEmpty(up.getDocuments())) {
if (up.getId() != null) {
MultiDocument old = getDao().find(MultiDocument.class, up.getId());
old.removeAll();
getDao().remove(old);
}
return null;
} else {
UUID id = up.getId();
if (id != null) {
MultiDocument old = getDao().find(MultiDocument.class, id);
old.removeAll();
for (Document doc : up.getDocuments()) {
Document parsed = documentParser.parse(doc);
parsed.setDocumentGroup(old);
old.addDocument(parsed);
}
if (old.getDocuments().size() == 0) {
getDao().remove(old);
return null;
}
return old;
}
}
}
return up;
}
}