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INT-3065: Add tweet-data-expression for Update

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JIRA: https://jira.spring.io/browse/INT-3065

Improve `TwitterSearchOutboundGateway` to use an expression
to build the tweet instead of just using the payload (which
remains the default).
This commit is contained in:
Artem Bilan
2014-04-22 20:41:43 +03:00
committed by Gary Russell
parent 9052377bf5
commit 97d1d389a9
8 changed files with 201 additions and 23 deletions
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19
src/reference/docbook/twitter.xml
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@@ -253,7 +253,24 @@ twitter.oauth.accessTokenSecret=AbRxUAvyNCtqQtxFK8w5ZMtMj20KFhB6o]]></programlis
channel="twitterChannel"/>]]></programlisting>
The only extra configuration that is required for this adapter is the <code>twitter-template</code> reference.
</para>
</section>
<para>
Starting with <emphasis>version 4.0</emphasis> the <code>&lt;int-twitter:outbound-channel-adapter&gt;</code>
supports a <code>tweet-data-expression</code> to populate the <classname>TweetData</classname> argument
(<ulink url="http://projects.spring.io/spring-social-twitter/">Spring Social Twitter</ulink>) using the
message as the root object of the expression evaluation context. The result can be a <classname>String</classname>,
which will be used for the <classname>TweetData</classname> message; a <classname>Tweet</classname> object, the
<code>text</code> of which will be used for the <classname>TweetData</classname> message; or an entire
<classname>TweetData</classname> object. For convenience, the <classname>TweetData</classname> can be built
from the expression directly without needing a fully qualified class name:
<programlisting language="xml"><![CDATA[<int-twitter:outbound-channel-adapter
twitter-template="twitterTemplate"
channel="twitterChannel"
tweet-data-expression="new TweetData(payload).withMedia(headers.media).displayCoordinates(true)/>]]></programlisting>
</para>
<para>
This allows, for example, attaching an image to the tweet.
</para>
</section>
<section id="outbound-twitter-direct">
<title>Twitter Outbound Direct Message Channel Adapter</title>

10
src/reference/docbook/whats-new.xml
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@@ -322,5 +322,15 @@
advanced configuration. See <xref linkend="ftp-session-factory"/> for more information.
</para>
</section>
<section id="4.0-twitter-status-updating">
<title>Twitter: StatusUpdatingMessageHandler</title>
<para>
The <classname>StatusUpdatingMessageHandler</classname> (<code>&lt;int-twitter:outbound-channel-adapter&gt;</code>)
now supports the <code>tweet-data-expression</code> attribute to build a
<classname>org.springframework.social.twitter.api.TweetData</classname> object for updating the
timeline status allowing, for example, attaching an image.
See <xref linkend="outbound-twitter-update"/> for more information.
</para>
</section>
</section>
</chapter>