You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 5 Next »

Atom Component

The atom: component is used for polling atom feeds.

Camel will default poll the feed every 60th seconds.
Note: The component currently only supports polling (consuming) feeds.

URI format

atom://atomUri

Where atomUri is the URI to the atom feed to poll.

Options

Property

Default

Description

splitEntries

true

If true Camel will poll the feed and for the subsequent polls return each entry poll by poll. If the feed contains 7 entries then Camel will return the first entry on the first poll, the 2nd entry on the next poll, until no more entries where as Camel will do a new update on the feed. If false then Camel will poll a fresh feed on every invocation.

filter

true

Is only used by the split entries to filter the entries to return. Camel will default use the UpdateDateFilter that only return new entries from the feed. So the client consuming from the feed never receives the same entry more than once. The filter will return the entries ordered by the newest last.

lastUpdate

null

Is only used by the filter, as the starting timestamp for selection never entries (uses the entry.updated timestamp). Syntax format is: yyyy-MM-ddTHH:MM:ss. Example: 2007-12-24T17:45:59.

consumer.delay

60000

Delay in millis between each poll

consumer.initialDelay

1000

Millis before polling starts

consumer.userFixedDelay

false

true to use fixed delay between pools, otherwise fixed rate is used. See ScheduledExecutorService in JDK for details.

Exchange data format

Camel will set the in body on the returned Exchange with the entries. Depending on the splitEntries flag Camel will either return one Entry or a List<Entry>.

Option

Value

Behavior

splitEntries

true

Only a single entry from the currently being processed feed is set: exchange.in.body(Entry)

splitEntries

false

The entires list of entries from the feed is set: exchange.in.body(List<Entry>)

Camel will set the Feed object on the in header:

exchange.in.header("org.apache.camel.component.atom.feed", feed)

Samples

In this sample we poll James Strahams blog.

from("atom://http://macstrac.blogspot.com/feeds/posts/default").to("seda:feeds");

In this sample we want to filter only good blogs we like to a seda queue. The sample also shows how to setup Camel standalone, not running in any Container or using Spring.

Error formatting macro: snippet: java.lang.NullPointerException

See Also

  • No labels