/*
* Copyright 2004 Sun Microsystems, Inc.
*
* 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 com.sun.syndication.feed.synd.impl;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import com.sun.syndication.feed.WireFeed;
import com.sun.syndication.feed.atom.Category;
import com.sun.syndication.feed.atom.Content;
import com.sun.syndication.feed.atom.Entry;
import com.sun.syndication.feed.atom.Feed;
import com.sun.syndication.feed.atom.Link;
import com.sun.syndication.feed.atom.Person;
import com.sun.syndication.feed.module.impl.ModuleUtils;
import com.sun.syndication.feed.synd.Converter;
import com.sun.syndication.feed.synd.SyndCategory;
import com.sun.syndication.feed.synd.SyndCategoryImpl;
import com.sun.syndication.feed.synd.SyndContent;
import com.sun.syndication.feed.synd.SyndContentImpl;
import com.sun.syndication.feed.synd.SyndEntry;
import com.sun.syndication.feed.synd.SyndEntryImpl;
import com.sun.syndication.feed.synd.SyndFeed;
import com.sun.syndication.feed.synd.SyndFeedImpl;
import com.sun.syndication.feed.synd.SyndLink;
import com.sun.syndication.feed.synd.SyndLinkImpl;
import com.sun.syndication.feed.synd.SyndPerson;
import com.sun.syndication.feed.synd.SyndEnclosure;
import com.sun.syndication.feed.synd.SyndEnclosureImpl;
/**
*/
public class ConverterForAtom10 implements Converter {
private String _type;
public ConverterForAtom10() {
this("atom_1.0");
}
protected ConverterForAtom10(String type) {
_type = type;
}
public String getType() {
return _type;
}
public void copyInto(WireFeed feed, SyndFeed syndFeed) {
Feed aFeed = (Feed) feed;
syndFeed.setModules(ModuleUtils.cloneModules(aFeed.getModules()));
if (((List)feed.getForeignMarkup()).size() > 0) {
syndFeed.setForeignMarkup((List)feed.getForeignMarkup());
}
syndFeed.setEncoding(aFeed.getEncoding());
syndFeed.setUri(aFeed.getId());
Content aTitle = aFeed.getTitleEx();
if (aTitle != null) {
SyndContent c = new SyndContentImpl();
c.setType(aTitle.getType());
c.setValue(aTitle.getValue());
syndFeed.setTitleEx(c);
}
Content aSubtitle = aFeed.getSubtitle();
if (aSubtitle!=null) {
SyndContent c = new SyndContentImpl();
c.setType(aSubtitle.getType());
c.setValue(aSubtitle.getValue());
syndFeed.setDescriptionEx(c);
}
// use first alternate links as THE link
if (aFeed.getAlternateLinks() != null
&& aFeed.getAlternateLinks().size() > 0) {
Link theLink = (Link)aFeed.getAlternateLinks().get(0);
syndFeed.setLink(theLink.getHrefResolved());
}
// lump alternate and other links together
List syndLinks = new ArrayList();
if (aFeed.getAlternateLinks() != null
&& aFeed.getAlternateLinks().size() > 0) {
syndLinks.addAll(createSyndLinks(aFeed.getAlternateLinks()));
}
if (aFeed.getOtherLinks() != null
&& aFeed.getOtherLinks().size() > 0) {
syndLinks.addAll(createSyndLinks(aFeed.getOtherLinks()));
}
syndFeed.setLinks(syndLinks);
List aEntries = aFeed.getEntries();
if (aEntries!=null) {
syndFeed.setEntries(createSyndEntries(aFeed, aEntries, syndFeed.isPreservingWireFeed()));
}
// Core Atom language/author/copyright/modified elements have precedence
// over DC equivalent info.
List authors = aFeed.getAuthors();
if (authors!=null && authors.size() > 0) {
syndFeed.setAuthors(ConverterForAtom03.createSyndPersons(authors));
}
List contributors = aFeed.getContributors();
if (contributors!=null && contributors.size() > 0) {
syndFeed.setContributors(ConverterForAtom03.createSyndPersons(contributors));
}
String rights = aFeed.getRights();
if (rights!=null) {
syndFeed.setCopyright(rights);
}
Date date = aFeed.getUpdated();
if (date!=null) {
syndFeed.setPublishedDate(date);
}
}
protected List createSyndLinks(List aLinks) {
ArrayList sLinks = new ArrayList();
for (Iterator iter = aLinks.iterator(); iter.hasNext();) {
Link link = (Link)iter.next();
SyndLink sLink = createSyndLink(link);
sLinks.add(sLink);
}
return sLinks;
}
protected List createSyndEntries(Feed feed, List atomEntries, boolean preserveWireItems) {
List syndEntries = new ArrayList();
for (int i=0;i<atomEntries.size();i++) {
syndEntries.add(createSyndEntry(feed, (Entry) atomEntries.get(i), preserveWireItems));
}
return syndEntries;
}
protected SyndEntry createSyndEntry(Feed feed, Entry entry, boolean preserveWireItem) {
SyndEntryImpl syndEntry = new SyndEntryImpl();
if (preserveWireItem) {
syndEntry.setWireEntry(entry);
}
syndEntry.setModules(ModuleUtils.cloneModules(entry.getModules()));
if (((List)entry.getForeignMarkup()).size() > 0) {
syndEntry.setForeignMarkup((List)entry.getForeignMarkup());
}
Content eTitle = entry.getTitleEx();
if (eTitle != null) {
syndEntry.setTitleEx(createSyndContent(eTitle));
}
Content summary = entry.getSummary();
if (summary!=null) {
syndEntry.setDescription(createSyndContent(summary));
}
List contents = entry.getContents();
if (contents != null && contents.size() > 0) {
List sContents = new ArrayList();
for (Iterator iter=contents.iterator(); iter.hasNext();) {
Content content = (Content)iter.next();
sContents.add(createSyndContent(content));
}
syndEntry.setContents(sContents);
}
List authors = entry.getAuthors();
if (authors!=null && authors.size() > 0) {
syndEntry.setAuthors(ConverterForAtom03.createSyndPersons(authors));
SyndPerson person0 = (SyndPerson)syndEntry.getAuthors().get(0);
syndEntry.setAuthor(person0.getName());
}
List contributors = entry.getContributors();
if (contributors!=null && contributors.size() > 0) {
syndEntry.setContributors(ConverterForAtom03.createSyndPersons(contributors));
}
Date date = entry.getPublished();
if (date!=null) {
syndEntry.setPublishedDate(date);
}
date = entry.getUpdated();
if (date!=null) {
syndEntry.setUpdatedDate(date);
}
List categories = entry.getCategories();
if (categories!=null) {
List syndCategories = new ArrayList();
for (Iterator iter=categories.iterator(); iter.hasNext();) {
Category c = (Category)iter.next();
SyndCategory syndCategory = new SyndCategoryImpl();
syndCategory.setName(c.getTerm());
syndCategory.setTaxonomyUri(c.getSchemeResolved());
// TODO: categories MAY have labels
// syndCategory.setLabel(c.getLabel());
syndCategories.add(syndCategory);
}
syndEntry.setCategories(syndCategories);
}
// use first alternate link as THE link
if (entry.getAlternateLinks() != null
&& entry.getAlternateLinks().size() > 0) {
Link theLink = (Link)entry.getAlternateLinks().get(0);
syndEntry.setLink(theLink.getHrefResolved());
}
// Create synd enclosures from enclosure links
List syndEnclosures = new ArrayList();
if (entry.getOtherLinks() != null && entry.getOtherLinks().size() > 0) {
List oLinks = entry.getOtherLinks();
for (Iterator iter = oLinks.iterator(); iter.hasNext(); ) {
Link thisLink = (Link)iter.next();
if ("enclosure".equals(thisLink.getRel()))
syndEnclosures.add(
createSyndEnclosure(feed, entry, thisLink));
}
}
syndEntry.setEnclosures(syndEnclosures);
// lump alternate and other links together
List syndLinks = new ArrayList();
if (entry.getAlternateLinks() != null
&& entry.getAlternateLinks().size() > 0) {
syndLinks.addAll(createSyndLinks(entry.getAlternateLinks()));
}
if (entry.getOtherLinks() != null
&& entry.getOtherLinks().size() > 0) {
syndLinks.addAll(createSyndLinks(entry.getOtherLinks()));
}
syndEntry.setLinks(syndLinks);
String id = entry.getId();
if (id!=null) {
syndEntry.setUri(entry.getId());
}
else {
syndEntry.setUri(syndEntry.getLink());
}
// Convert source element Feed into SyndFeed and assign as SyndEntry
// source
Feed source = entry.getSource();
if (source != null) {
SyndFeed syndSource = new SyndFeedImpl(source);
syndEntry.setSource(syndSource);
}
return syndEntry;
}
public SyndEnclosure createSyndEnclosure(Feed feed, Entry entry,
Link link) {
SyndEnclosure syndEncl = new SyndEnclosureImpl();
syndEncl.setUrl(link.getHrefResolved());
syndEncl.setType(link.getType());
syndEncl.setLength(link.getLength());
return syndEncl;
}
public Link createAtomEnclosure(SyndEnclosure syndEnclosure) {
Link link = new Link();
link.setRel( "enclosure");
link.setType( syndEnclosure.getType());
link.setHref( syndEnclosure.getUrl());
link.setLength( syndEnclosure.getLength());
return link;
}
public SyndLink createSyndLink(Link link) {
SyndLink syndLink = new SyndLinkImpl();
syndLink.setRel( link.getRel());
syndLink.setType( link.getType());
syndLink.setHref( link.getHrefResolved());
syndLink.setHreflang(link.getHreflang());
syndLink.setLength( link.getLength());
syndLink.setTitle( link.getTitle());
return syndLink;
}
public Link createAtomLink(SyndLink syndLink) {
Link link = new Link();
link.setRel( syndLink.getRel());
link.setType( syndLink.getType());
link.setHref( syndLink.getHref());
link.setHreflang(syndLink.getHreflang());
link.setLength( syndLink.getLength());
link.setTitle( syndLink.getTitle());
return link;
}
public WireFeed createRealFeed(SyndFeed syndFeed) {
Feed aFeed = new Feed(getType());
aFeed.setModules(ModuleUtils.cloneModules(syndFeed.getModules()));
aFeed.setEncoding(syndFeed.getEncoding());
aFeed.setId(syndFeed.getUri());
SyndContent sTitle = syndFeed.getTitleEx();
if (sTitle != null) {
Content title = new Content();
title.setType(sTitle.getType());
title.setValue(sTitle.getValue());
aFeed.setTitleEx(title);
}
SyndContent sDesc = syndFeed.getDescriptionEx();
if (sDesc != null) {
Content subtitle = new Content();
subtitle.setType(sDesc.getType());
subtitle.setValue(sDesc.getValue());
aFeed.setSubtitle(subtitle);
}
// separate SyndEntry's links collection into alternate and other links
List alternateLinks = new ArrayList();
List otherLinks = new ArrayList();
List slinks = syndFeed.getLinks();
if (slinks != null) {
for (Iterator iter=slinks.iterator(); iter.hasNext();) {
SyndLink syndLink = (SyndLink)iter.next();
Link link = createAtomLink(syndLink);
if (link.getRel() == null ||
"".equals(link.getRel().trim()) ||
"alternate".equals(link.getRel())) {
alternateLinks.add(link);
} else {
otherLinks.add(link);
}
}
}
// no alternate link? then use THE link if there is one
if (alternateLinks.size() == 0 && syndFeed.getLink() != null) {
Link link = new Link();
link.setRel("alternate");
link.setHref(syndFeed.getLink());
alternateLinks.add(link);
}
if (alternateLinks.size() > 0) aFeed.setAlternateLinks(alternateLinks);
if (otherLinks.size() > 0) aFeed.setOtherLinks(otherLinks);
List sCats = syndFeed.getCategories();
List aCats = new ArrayList();
if (sCats != null) {
for (Iterator iter=sCats.iterator(); iter.hasNext();) {
SyndCategory sCat = (SyndCategory)iter.next();
Category aCat = new Category();
aCat.setTerm(sCat.getName());
// TODO: aCat.setLabel(sCat.getLabel());
aCat.setScheme(sCat.getTaxonomyUri());
aCats.add(aCat);
}
}
if (aCats.size() > 0) aFeed.setCategories(aCats);
List authors = syndFeed.getAuthors();
if (authors!=null && authors.size() > 0) {
aFeed.setAuthors(ConverterForAtom03.createAtomPersons(authors));
}
List contributors = syndFeed.getContributors();
if (contributors!=null && contributors.size() > 0) {
aFeed.setContributors(ConverterForAtom03.createAtomPersons(contributors));
}
aFeed.setRights(syndFeed.getCopyright());
aFeed.setUpdated(syndFeed.getPublishedDate());
List sEntries = syndFeed.getEntries();
if (sEntries!=null) {
aFeed.setEntries(createAtomEntries(sEntries));
}
if (((List)syndFeed.getForeignMarkup()).size() > 0) {
aFeed.setForeignMarkup(syndFeed.getForeignMarkup());
}
return aFeed;
}
protected SyndContent createSyndContent(Content content) {
SyndContent sContent = new SyndContentImpl();
sContent.setType(content.getType());
sContent.setValue(content.getValue());
return sContent;
}
protected List createAtomEntries(List syndEntries) {
List atomEntries = new ArrayList();
for (int i=0;i<syndEntries.size();i++) {
atomEntries.add(createAtomEntry((SyndEntry)syndEntries.get(i)));
}
return atomEntries;
}
protected Content createAtomContent(SyndContent sContent) {
Content content = new Content();
content.setType(sContent.getType());
content.setValue(sContent.getValue());
return content;
}
protected List createAtomContents(List syndContents) {
List atomContents = new ArrayList();
for (int i=0;i<syndContents.size();i++) {
atomContents.add(createAtomContent((SyndContent)syndContents.get(i)));
}
return atomContents;
}
protected Entry createAtomEntry(SyndEntry sEntry) {
Entry aEntry = new Entry();
aEntry.setModules(ModuleUtils.cloneModules(sEntry.getModules()));
aEntry.setId(sEntry.getUri());
SyndContent sTitle = sEntry.getTitleEx();
if (sTitle!=null) {
Content title = new Content();
title.setType(sTitle.getType());
title.setValue(sTitle.getValue());
aEntry.setTitleEx(title);
}
SyndContent sDescription = sEntry.getDescription();
if (sDescription!=null) {
Content summary = new Content();
summary.setType(sDescription.getType());
summary.setValue(sDescription.getValue());
aEntry.setSummary(summary);
}
// separate SyndEntry's links collection into alternate and other links
List alternateLinks = new ArrayList();
List otherLinks = new ArrayList();
List slinks = sEntry.getLinks();
List enclosures = sEntry.getEnclosures();
boolean linkRelEnclosureExists = false;
if (slinks != null) {
for (Iterator iter=slinks.iterator(); iter.hasNext();) {
SyndLink syndLink = (SyndLink)iter.next();
Link link = createAtomLink(syndLink);
// Set this flag if there's a link of rel = enclosure so that
// enclosures won't be duplicated when pulled from
// SyndEntry.getEnclosures()
if (syndLink.getRel() != null &&
"enclosure".equals(syndLink.getRel())) {
linkRelEnclosureExists = true;
}
if (link.getRel() == null ||
"".equals(link.getRel().trim()) ||
"alternate".equals(syndLink.getRel())) {
alternateLinks.add(link);
} else {
otherLinks.add(link);
}
}
}
// no alternate link? then use THE link if there is one
if (alternateLinks.size() == 0 && sEntry.getLink() != null) {
Link link = new Link();
link.setRel("alternate");
link.setHref(sEntry.getLink());
alternateLinks.add(link);
}
// add SyndEnclosures as links with rel="enclosure" ONLY if
// there are no SyndEntry.getLinks() with rel="enclosure"
if (enclosures != null && linkRelEnclosureExists == false) {
for (Iterator iter=enclosures.iterator(); iter.hasNext();) {
SyndEnclosure syndEncl = (SyndEnclosure)iter.next();
Link link = createAtomEnclosure(syndEncl);
otherLinks.add(link);
}
}
if (alternateLinks.size() > 0) aEntry.setAlternateLinks(alternateLinks);
if (otherLinks.size() > 0) aEntry.setOtherLinks(otherLinks);
List sCats = sEntry.getCategories();
List aCats = new ArrayList();
if (sCats != null) {
for (Iterator iter=sCats.iterator(); iter.hasNext();) {
SyndCategory sCat = (SyndCategory)iter.next();
Category aCat = new Category();
aCat.setTerm(sCat.getName());
// TODO: aCat.setLabel(sCat.getLabel());
aCat.setScheme(sCat.getTaxonomyUri());
aCats.add(aCat);
}
}
if (aCats.size() > 0) aEntry.setCategories(aCats);
List syndContents = sEntry.getContents();
aEntry.setContents(createAtomContents(syndContents));
List authors = sEntry.getAuthors();
if (authors!=null && authors.size() > 0) {
aEntry.setAuthors(ConverterForAtom03.createAtomPersons(authors));
} else if (sEntry.getAuthor() != null) {
Person person = new Person();
person.setName(sEntry.getAuthor());
authors = new ArrayList();
authors.add(person);
aEntry.setAuthors(authors);
}
List contributors = sEntry.getContributors();
if (contributors!=null && contributors.size() > 0) {
aEntry.setContributors(ConverterForAtom03.createAtomPersons(contributors));
}
aEntry.setPublished(sEntry.getPublishedDate());
// Fix for issue #41 "Use updated instead of published"
// And issue #42 "Atom 1.0 Date (Updated or Published) Not Set"
// Atom requires an updated date, if it's missing use the published date
if (sEntry.getUpdatedDate() != null) {
aEntry.setUpdated(sEntry.getUpdatedDate());
} else {
aEntry.setUpdated(sEntry.getPublishedDate());
}
if (((List)sEntry.getForeignMarkup()).size() > 0) {
aEntry.setForeignMarkup((List)sEntry.getForeignMarkup());
}
SyndFeed sSource = sEntry.getSource();
if (sSource != null) {
Feed aSource = (Feed) sSource.createWireFeed(getType());
aEntry.setSource(aSource);
}
return aEntry;
}
}