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## org.springframework.web.servlet.view.feed
Class AbstractAtomFeedView

    java.lang.Object
      org.springframework.context.support.ApplicationObjectSupport
          org.springframework.web.context.support.WebApplicationObjectSupport
              org.springframework.web.servlet.view.AbstractView
                  org.springframework.web.servlet.view.feed.AbstractFeedView<com.sun.syndication.feed.atom.Feed>
                      org.springframework.web.servlet.view.feed.AbstractAtomFeedView

All Implemented Interfaces:
  BeanNameAware, ApplicationContextAware, ServletContextAware, View

    public abstract class AbstractAtomFeedView

extends AbstractFeedView<com.sun.syndication.feed.atom.Feed>

Abstract superclass for Atom Feed views, using java.net's ROME package.

Application-specific view classes will extend this class. The view will be held in the subclass itself, not in a template.

Main entry points are the `AbstractFeedView.buildFeedMetadata(Map, WireFeed, HttpServletRequest)` and `buildFeedEntries(Map, HttpServletRequest, HttpServletResponse)`.

Thanks to Jettro Coenradie and Sergio Bossa for the original feed view prototype!

Since:
  3.0
Author:
  Arjen Poutsma, Juergen Hoeller
See Also:
  `AbstractFeedView.buildFeedMetadata(Map, WireFeed, HttpServletRequest)`, `buildFeedEntries(Map, HttpServletRequest, HttpServletResponse)`, Atom Syndication Format

Field Summary
`static String` | `DEFAULT_FEED_TYPE`

Fields inherited from class org.springframework.web.servlet.view.AbstractView
`DEFAULT_CONTENT_TYPE`

Fields inherited from class org.springframework.context.support.ApplicationObjectSupport
`logger`

Fields inherited from interface org.springframework.web.servlet.View
`RESPONSE_STATUS_ATTRIBUTE`

Constructor Summary
`AbstractAtomFeedView()`

Method Summary
`protected void` | `buildFeedEntries(Map<String,Object> model, com.sun.syndication.feed.atom.Feed feed, HttpServletRequest request, HttpServletResponse response)` Invokes `buildFeedEntries(Map, HttpServletRequest, HttpServletResponse)` to get a list of feed entries.
`protected abstract List<com.sun.syndication.feed.atom.Entry>` | `buildFeedEntries(Map<String,Object> model, HttpServletRequest request, HttpServletResponse response)` Subclasses must implement this method to build feed entries, given the model.
`protected com.sun.syndication.feed.atom.Feed` | `newFeed()` Create a new Feed instance to hold the entries.
`void` | `setFeedType(String feedType)` Sets the Rome feed type to use.

Methods inherited from class org.springframework.web.servlet.view.feed.AbstractFeedView
`buildFeedMetadata, renderMergedOutputModel`

Methods inherited from class org.springframework.web.servlet.view.AbstractView
`addStaticAttribute, createRequestContext, createTemporaryOutputStream, exposeModelAsRequestAttributes, generatesDownloadContent, getAttributesMap, getBeanName, getContentType, getRequestContextAttribute, getStaticAttributes, prepareResponse, render, setAttributes, setAttributesCSV, setAttributesMap, setBeanName, setContentType, setRequestContextAttribute, toString, writeToResponse`

Methods inherited from class org.springframework.web.context.support.WebApplicationObjectSupport
`getServletContext, getTempDir, getWebApplicationContext, initApplicationContext, initServletContext, isContextRequired, setServletContext`

Methods inherited from class org.springframework.context.support.ApplicationObjectSupport
`getApplicationContext, getMessageSourceAccessor, initApplicationContext, requiredContextClass, setApplicationContext`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### DEFAULT_FEED_TYPE

    public static final String DEFAULT_FEED_TYPE

See Also:
  Constant Field Values

Constructor Detail

### AbstractAtomFeedView

    public AbstractAtomFeedView()

Method Detail

### setFeedType

    public void setFeedType(String feedType)

  Sets the Rome feed type to use.

  Defaults to Atom 1.0.

  See Also:
    `WireFeed.setFeedType(String)`, `DEFAULT_FEED_TYPE`

### newFeed

    protected com.sun.syndication.feed.atom.Feed newFeed()

  Create a new Feed instance to hold the entries.

  By default returns an Atom 1.0 feed, but the subclass can specify any Feed.

  Specified by:
    `newFeed` in class `AbstractFeedView<com.sun.syndication.feed.atom.Feed>`
  Returns:
    the newly created Feed instance
  See Also:
    `setFeedType(String)`

### buildFeedEntries

    protected final void buildFeedEntries(Map<String,Object> model,
                                          com.sun.syndication.feed.atom.Feed feed,
                                          HttpServletRequest request,
                                          HttpServletResponse response)
                                   throws Exception

  Invokes `buildFeedEntries(Map, HttpServletRequest, HttpServletResponse)` to get a list of feed entries.

  Specified by:
    `buildFeedEntries` in class `AbstractFeedView<com.sun.syndication.feed.atom.Feed>`
  Parameters:
    `model` - the model Map
    `feed` - the feed to add entries to
    `request` - in case we need locale etc. Shouldn't look at attributes.
    `response` - in case we need to set cookies. Shouldn't write to it.
  Throws:
    `Exception` - any exception that occured during building

### buildFeedEntries

    protected abstract List<com.sun.syndication.feed.atom.Entry> buildFeedEntries(Map<String,Object> model,
                                                                                  HttpServletRequest request,
                                                                                  HttpServletResponse response)
                                                                           throws Exception

  Subclasses must implement this method to build feed entries, given the model.

  Note that the passed-in HTTP response is just supposed to be used for setting cookies or other HTTP headers. The built feed itself will automatically get written to the response after this method returns.

  Parameters:
    `model` - the model Map
    `request` - in case we need locale etc. Shouldn't look at attributes.
    `response` - in case we need to set cookies. Shouldn't write to it.
  Returns:
    the feed entries to be added to the feed
  Throws:
    `Exception` - any exception that occured during document building
  See Also:
    `Entry`

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