Examples of org.apache.abdera.model.Feed

org.apache.abdera.model.Feed

Represents an Atom Feed Element

Per RFC4287:

The "atom:feed" element is the document (i.e., top-level) element of an Atom Feed Document, acting as a container for metadata and data associated with the feed. Its element children consist of metadata elements followed by zero or more atom:entry child elements. atomFeed = element atom:feed { atomCommonAttributes, (atomAuthor & atomCategory & atomContributor & atomGenerator? & atomIcon? & atomId & atomLink & atomLogo? & atomRights? & atomSubtitle? & atomTitle & atomUpdated & extensionElement*), atomEntry } This specification assigns no significance to the order of atom:entry elements within the feed. The following child elements are defined by this specification (note that the presence of some of these elements is required): o atom:feed elements MUST contain one or more atom:author elements, unless all of the atom:feed element's child atom:entry elements contain at least one atom:author element. o atom:feed elements MAY contain any number of atom:category elements. o atom:feed elements MAY contain any number of atom:contributor elements. o atom:feed elements MUST NOT contain more than one atom:generator element. o atom:feed elements MUST NOT contain more than one atom:icon element. o atom:feed elements MUST NOT contain more than one atom:logo element. o atom:feed elements MUST contain exactly one atom:id element. o atom:feed elements SHOULD contain one atom:link element with a rel attribute value of "self". This is the preferred URI for retrieving Atom Feed Documents representing this Atom feed. o atom:feed elements MUST NOT contain more than one atom:link element with a rel attribute value of "alternate" that has the same combination of type and hreflang attribute values. o atom:feed elements MAY contain additional atom:link elements beyond those described above. o atom:feed elements MUST NOT contain more than one atom:rights element. o atom:feed elements MUST NOT contain more than one atom:subtitle element. o atom:feed elements MUST contain exactly one atom:title element. o atom:feed elements MUST contain exactly one atom:updated element. If multiple atom:entry elements with the same atom:id value appear in an Atom Feed Document, they represent the same entry. Their atom:updated timestamps SHOULD be different. If an Atom Feed Document contains multiple entries with the same atom:id, Atom Processors MAY choose to display all of them or some subset of them. One typical behavior would be to display only the entry with the latest atom:updated timestamp.

        
        // lets check if the Atom reader is asking for a set of records which has already been 
        // converted to Feed
        
        synchronized (feeds) {
            Feed f = feeds.get(page);
            if (f != null) {
                return f;
            }
        }
        
        Feed feed = null;
        SearchCondition<LogRecord> condition = getCurrentCondition();
        synchronized (records) {
            List<LogRecord> list = new LinkedList<LogRecord>();
            int lastPage = fillSubList(list, page, condition);
            Collections.sort(list, new LogRecordComparator());
            feed = (Feed)new CustomFeedConverter(page).convert(list).get(0);
            setFeedPageProperties(feed, page, lastPage);
        }
        // if at the moment we've converted n < pageSize number of records only and
        // persist a Feed keyed by a page then another reader requesting the same page 
        // may miss latest records which might've been added since the original request
        if (condition == null && feed.getEntries().size() == pageSize) {
            synchronized (feeds) {
                feeds.put(page, feed);
            }
        }
        return feed;

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  public static void testSection12PrefixedNamespace() throws Exception {
    //http://feedvalidator.org/testcases/atom/1.2/prefixed-namespace.xml
    IRI uri = baseURI.resolve("1.2/prefixed-namespace.xml");
    Document<Feed> doc = get(uri);
    assertNotNull(doc);
    Feed feed = doc.getRoot();
    assertNotNull(feed);
    assert(feed.getQName().getPrefix().equals("atom"));
  }

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  public static void testSection2InfosetAttrOrder() throws Exception {
    //http://feedvalidator.org/testcases/atom/2/infoset-attr-order.xml
    IRI uri = baseURI.resolve("2/infoset-attr-order.xml");
    Document<Feed> doc = get(uri);
    assertNotNull(doc);
    Feed feed = doc.getRoot();
    assertNotNull(feed);
    List<Link> links = feed.getLinks(Link.REL_ALTERNATE);
    assertEquals(links.size(),2);
    for (Link link : links) {
      assertEquals(link.getRel(), "alternate");
      assertNotNull(link.getHref());
    }

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  public static void testSection2InfosetCDATA() throws Exception {
    //http://feedvalidator.org/testcases/atom/2/infoset-cdata.xml
    IRI uri = baseURI.resolve("2/infoset-cdata.xml");
    Document<Feed> doc = get(uri);
    assertNotNull(doc);
    Feed feed = doc.getRoot();
    List<Entry> entries = feed.getEntries();
    for (Entry entry : entries) {
      Text summary = entry.getSummaryElement();
      assertNotNull(summary);
      assertEquals(summary.getTextType(), Text.Type.TEXT);
      String value = summary.getValue();

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  public static void testSection2InfosetCharRef() throws Exception {
    //http://feedvalidator.org/testcases/atom/2/infoset-char-ref.xml
    IRI uri = baseURI.resolve("2/infoset-char-ref.xml");
    Document<Feed> doc = get(uri);
    assertNotNull(doc);
    Feed feed = doc.getRoot();
    List<Entry> entries = feed.getEntries();
    for (Entry entry : entries) {
      DateTime updated = entry.getUpdatedElement();
      assertNotNull(updated);
      assertNotNull(updated.getValue());
      assertNotNull(updated.getValue().getDate());

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  public static void testSection2InfosetElementWhitespace() throws Exception {
    //http://feedvalidator.org/testcases/atom/2/infoset-element-whitespace.xml
    IRI uri = baseURI.resolve("2/infoset-element-whitespace.xml");
    Document<Feed> doc = get(uri);
    assertNotNull(doc);
    Feed feed = doc.getRoot();
    assertNotNull(feed);
    Link link = feed.getAlternateLink();
    assertEquals(link.getResolvedHref(), new IRI("http://example.org/"));
    // the feed has a second alternate link that we will ignore
  }

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  public static void testSection2InfosetEmpty1() throws Exception {
    //http://feedvalidator.org/testcases/atom/2/infoset-empty1.xml
    IRI uri = baseURI.resolve("2/infoset-empty1.xml");
    Document<Feed> doc = get(uri);
    assertNotNull(doc);
    Feed feed = doc.getRoot();
    assertNotNull(feed);
    Entry entry = feed.getEntries().get(0);
    assertEquals(entry.getTitle(),"");
  }

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  public static void testSection2InfosetEmpty2() throws Exception {
    //http://feedvalidator.org/testcases/atom/2/infoset-empty2.xml
    IRI uri = baseURI.resolve("2/infoset-empty2.xml");
    Document<Feed> doc = get(uri);
    assertNotNull(doc);
    Feed feed = doc.getRoot();
    assertNotNull(feed);
    Entry entry = feed.getEntries().get(0);
    assertEquals(entry.getTitle(),"");
  }

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  public static void testSection2InvalidXmlBase() throws Exception {
    //http://feedvalidator.org/testcases/atom/2/invalid-xml-base.xml
    IRI uri = baseURI.resolve("2/invalid-xml-base.xml");
    Document<Feed> doc = get(uri);
    assertNotNull(doc);
    Feed feed = doc.getRoot();
    try {
      feed.getBaseUri();
    } catch (Exception e) {
      assertTrue(e instanceof IRISyntaxException);
    }
  }

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    //http://feedvalidator.org/testcases/atom/2/iri.xml
    IRI uri = baseURI.resolve("2/iri.xml");
    Document<Feed> doc = get(uri);
    assertNotNull(doc);
    
    Feed feed = doc.getRoot();
    assertNotNull(feed);
    assertNotNull(feed.getIdElement().getValue());
    assertNotNull(feed.getAuthor().getUriElement().getValue());
    assertNotNull(feed.getAuthor().getUriElement().getValue().toASCIIString());
  }

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