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| <h1 class="firstHeading">SMILA/Documentation/Feed Agent</h1> |
| <div id="bodyContent"> |
| <h3 id="siteSub">From Eclipsepedia</h3> |
| <div id="contentSub"><span class="subpages">< <a href="../../SMILA.html" title="SMILA">SMILA</a> | <a href="../Documentation.html" title="SMILA/Documentation">Documentation</a></span></div> |
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| <table id="toc" class="toc" summary="Contents"><tr><td><div id="toctitle"><h2>Contents</h2></div> |
| <ul> |
| <li class="toclevel-1"><a href="Feed_Agent.html#Overview"><span class="tocnumber">1</span> <span class="toctext">Overview</span></a></li> |
| <li class="toclevel-1"><a href="Feed_Agent.html#Agent_configuration"><span class="tocnumber">2</span> <span class="toctext">Agent configuration</span></a></li> |
| <li class="toclevel-1"><a href="Feed_Agent.html#Agent_configuration_explanation"><span class="tocnumber">3</span> <span class="toctext">Agent configuration explanation</span></a></li> |
| <li class="toclevel-1"><a href="Feed_Agent.html#Configuration_example"><span class="tocnumber">4</span> <span class="toctext">Configuration example</span></a></li> |
| <li class="toclevel-1"><a href="Feed_Agent.html#Output_example"><span class="tocnumber">5</span> <span class="toctext">Output example</span></a></li> |
| <li class="toclevel-1"><a href="Feed_Agent.html#See_also"><span class="tocnumber">6</span> <span class="toctext">See also</span></a></li> |
| </ul> |
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| <a name="Overview"></a><h2> <span class="mw-headline"> Overview </span></h2> |
| <p>The Feed agent offers the functionality to receive RSS and Atom feeds on a regular basis. The implementation uses <a href="http://rome.dev.java.net/" class="external text" title="http://rome.dev.java.net/" rel="nofollow">ROME</a> and <a href="http://wiki.java.net/bin/view/Javawsxml/RomeFetcher" class="external text" title="http://wiki.java.net/bin/view/Javawsxml/RomeFetcher" rel="nofollow">ROME Fetcher</a> to retrieve and parse the feeds. ROME supports the following feed formats: |
| </p> |
| <ul><li> RSS 0.90 |
| </li><li> RSS 0.91 Netscape |
| </li><li> RSS 0.91 Userland |
| </li><li> RSS 0.92 |
| </li><li> RSS 0.93 |
| </li><li> RSS 0.94 |
| </li><li> RSS 1.0 |
| </li><li> RSS 2.0 |
| </li><li> Atom 0.3 |
| </li><li> Atom 1.0. |
| </li></ul> |
| <a name="Agent_configuration"></a><h2> <span class="mw-headline"> Agent configuration </span></h2> |
| <p>The example configuration file is located at <tt>configuration/org.eclipse.smila.connectivity.framework/feeds.xml</tt>. |
| </p><p>Defining Schema: <tt>org.eclipse.smila.connectivits.framework.agent.feed/schemas/FeedDataSourceConnectionConfigSchema.xsd</tt>. |
| </p> |
| <a name="Agent_configuration_explanation"></a><h2> <span class="mw-headline"> Agent configuration explanation </span></h2> |
| <p>The root element of the configuration is <tt>DataSourceConnectionConfig</tt> and contains the following sub elements: |
| </p> |
| <ul><li> <tt>DataSourceID</tt> – the identification of a data source |
| </li><li> <tt>SchemaID</tt> – specifies the schema for the data source |
| </li><li> <tt>DataConnectionID</tt> – describes which agent or crawler should be used |
| <ul><li> <tt>Crawler</tt> – service ID a crawler |
| </li><li> <tt>Agent</tt> – service ID of an agent |
| </li></ul> |
| </li><li> <tt>CompoundHandling</tt> – specify if packed data (like a ZIP containing files) should be unpack and files within should be processed (YES or NO). |
| </li><li> <tt>Attributes</tt> – list all attributes provided by the data source |
| <ul><li> <tt>Attribute</tt> |
| <ul><li> <tt>Type</tt> (required) – the data type (String, Integer or Date). |
| </li><li> <tt>Name</tt> (required) – attributes name. |
| </li><li> <tt>HashAttribute</tt> – specify if a hash should be created (true or false). |
| </li><li> <tt>KeyAttribute</tt> – creates a key for this object, for example for record id (true or false). |
| </li><li> <tt>Attachment</tt> – specify if the attribute return the data as attachment of record. |
| </li></ul> |
| </li></ul> |
| </li><li> <tt>Process</tt> – contains parameters for the agent business logic. |
| <ul><li> <tt>UpdateInterval</tt> – the number of seconds to wait before reloading the feeds specified by FeedUrl. |
| </li><li> <tt>FeedUrl</tt> – the URL of the news feed to load. You may specify multiple FeedUrls. |
| </li></ul> |
| </li></ul> |
| <p>Here is a description of the attributes that the Feed agent offers. It provides attributes about the feed itself (using prefix <tt>Feed</tt>) and attributes for entries of the feed. Some attributes do not return literals (string, date) but nested objects like <b>Person</b>, <b>Link</b>, etc. These objects are all MObjects that contain attributes themselves. The nested MObjects and their attributes (the attribute names are hard coded and cannot be configured) are described below. |
| Note that not all feeds necessarily provide values for all the attributes and that some values are provided that are not apperently part of the feed. |
| </p><p>These are the attributes of the feed: |
| </p> |
| <table class="wikitable" border="1"> |
| |
| <tr> |
| <th> Attribute |
| </th><th> Type |
| </th><th> Description |
| </th></tr> |
| <tr> |
| <td> FeedAuthors |
| </td><td> List<Person> |
| </td><td> Returns the feed authors |
| </td></tr> |
| <tr> |
| <td> FeedCategories |
| </td><td> List<Category> |
| </td><td> Returns the feed categories |
| </td></tr> |
| <tr> |
| <td> FeedContributors |
| </td><td> List<Person> |
| </td><td> Returns the feed contributors |
| </td></tr> |
| <tr> |
| <td> FeedCopyright |
| </td><td> String |
| </td><td> Returns the feed copyright information |
| </td></tr> |
| <tr> |
| <td> FeedDescription |
| </td><td> String |
| </td><td> Returns the feed description |
| </td></tr> |
| <tr> |
| <td> FeedEncoding |
| </td><td> String |
| </td><td> Returns the charset encoding of the feed |
| </td></tr> |
| <tr> |
| <td> FeedType |
| </td><td> String |
| </td><td> Returns the feed type |
| </td></tr> |
| <tr> |
| <td> FeedImage |
| </td><td> Image |
| </td><td> Returns the feed image |
| </td></tr> |
| <tr> |
| <td> FeedLanguage |
| </td><td> String |
| </td><td> Returns the feed language |
| </td></tr> |
| <tr> |
| <td> FeedLinks |
| </td><td> List<Link> |
| </td><td> Returns the feed links |
| </td></tr> |
| <tr> |
| <td> FeedPublishDate |
| </td><td> Date |
| </td><td> Returns the feed published date |
| </td></tr> |
| <tr> |
| <td> FeedTitle |
| </td><td> String |
| </td><td> Returns the feed title |
| </td></tr> |
| <tr> |
| <td> FeedUri |
| </td><td> String |
| </td><td> Returns the feed uri |
| </td></tr> |
| </table> |
| <p><br /> |
| And here are the attributes of feed entries: |
| </p> |
| <table class="wikitable" border="1"> |
| |
| <tr> |
| <th> Attribute |
| </th><th> Type |
| </th><th> Description |
| </th></tr> |
| <tr> |
| <td> Authors |
| </td><td> List<Person> |
| </td><td> Returns a feed entry authors |
| </td></tr> |
| <tr> |
| <td> Categories |
| </td><td> List<Category> |
| </td><td> Returns a feed entry categories |
| </td></tr> |
| <tr> |
| <td> Contents |
| </td><td> List<Content> |
| </td><td> Returns a feed entry contents |
| </td></tr> |
| <tr> |
| <td> Contributors |
| </td><td> List<Person> |
| </td><td> Returns a feed entry contributors |
| </td></tr> |
| <tr> |
| <td> Description |
| </td><td> Content |
| </td><td> Returns a feed entry description |
| </td></tr> |
| <tr> |
| <td> Enclosures |
| </td><td> List<Enclosure> |
| </td><td> Returns a feed entry enclosures |
| </td></tr> |
| <tr> |
| <td> Links |
| </td><td> List<Link> |
| </td><td> Returns a feed entry links |
| </td></tr> |
| <tr> |
| <td> PublishDate |
| </td><td> Date |
| </td><td> Returns a feed entry publish date |
| </td></tr> |
| <tr> |
| <td> Title |
| </td><td> String |
| </td><td> Returns a feed entry title |
| </td></tr> |
| <tr> |
| <td> Uri |
| </td><td> String |
| </td><td> Returns a feed entry uri. |
| </td></tr> |
| <tr> |
| <td> UpdateDate |
| </td><td> Date |
| </td><td> Returns a feed entry update date. |
| </td></tr> |
| </table> |
| <p>MObject <b>Person</b>: |
| </p> |
| <table class="wikitable" border="1"> |
| |
| <tr> |
| <th> Attribute |
| </th><th> Type |
| </th><th> Description |
| </th></tr> |
| <tr> |
| <td> Email |
| </td><td> String |
| </td><td> Returns the email of the person |
| </td></tr> |
| <tr> |
| <td> Name |
| </td><td> String |
| </td><td> Returns the name of the person |
| </td></tr> |
| <tr> |
| <td> Uri |
| </td><td> String |
| </td><td> Returns the uri of the person |
| </td></tr> |
| </table> |
| <p>MObject <b>Image</b>: |
| </p> |
| <table class="wikitable" border="1"> |
| |
| <tr> |
| <th> Attribute |
| </th><th> Type |
| </th><th> Description |
| </th></tr> |
| <tr> |
| <td> Link |
| </td><td> String |
| </td><td> Returns the link of the image |
| </td></tr> |
| <tr> |
| <td> Title |
| </td><td> String |
| </td><td> Returns the title of the image |
| </td></tr> |
| <tr> |
| <td> Url |
| </td><td> String |
| </td><td> Returns the url of the image |
| </td></tr> |
| <tr> |
| <td> Description |
| </td><td> String |
| </td><td> Returns the description of the image |
| </td></tr> |
| </table> |
| <p>MObject <b>Category</b>: |
| </p> |
| <table class="wikitable" border="1"> |
| |
| <tr> |
| <th> Attribute |
| </th><th> Type |
| </th><th> Description |
| </th></tr> |
| <tr> |
| <td> Name |
| </td><td> String |
| </td><td> Returns the name of the category |
| </td></tr> |
| <tr> |
| <td> TaxanomyUri |
| </td><td> String |
| </td><td> Returns the taxonomy uri of the category |
| </td></tr> |
| </table> |
| <p>MObject <b>Enclosur</b>e: |
| </p> |
| <table class="wikitable" border="1"> |
| |
| <tr> |
| <th> Attribute |
| </th><th> Type |
| </th><th> Description |
| </th></tr> |
| <tr> |
| <td> Type |
| </td><td> String |
| </td><td> Returns the type of the enclosure |
| </td></tr> |
| <tr> |
| <td> Url |
| </td><td> String |
| </td><td> Returns the url of the enclosure |
| </td></tr> |
| <tr> |
| <td> Length |
| </td><td> Integer |
| </td><td> Returns the length of the enclosure |
| </td></tr> |
| </table> |
| <p>MObject <b>Link</b>: |
| </p> |
| <table class="wikitable" border="1"> |
| |
| <tr> |
| <th> Attribute |
| </th><th> Type |
| </th><th> Description |
| </th></tr> |
| <tr> |
| <td> Href |
| </td><td> String |
| </td><td> Returns the href of the link |
| </td></tr> |
| <tr> |
| <td> Hreflang |
| </td><td> String |
| </td><td> Returns the hreflang of the link |
| </td></tr> |
| <tr> |
| <td> Rel |
| </td><td> Integer |
| </td><td> Returns the rel of the link |
| </td></tr> |
| <tr> |
| <td> Title |
| </td><td> String |
| </td><td> Returns the title of the link |
| </td></tr> |
| <tr> |
| <td> Type |
| </td><td> String |
| </td><td> Returns the type of the link |
| </td></tr> |
| <tr> |
| <td> Length |
| </td><td> Integer |
| </td><td> Returns the length of the link |
| </td></tr> |
| </table> |
| <p>MObject <b>Content</b>: |
| </p> |
| <table class="wikitable" border="1"> |
| |
| <tr> |
| <th> Attribute |
| </th><th> Type |
| </th><th> Description |
| </th></tr> |
| <tr> |
| <td> Mode |
| </td><td> String |
| </td><td> Returns the mode of the content |
| </td></tr> |
| <tr> |
| <td> Value |
| </td><td> String |
| </td><td> Returns the value of the content |
| </td></tr> |
| <tr> |
| <td> Type |
| </td><td> String |
| </td><td> Returns the type of the content |
| </td></tr> |
| </table> |
| <a name="Configuration_example"></a><h2> <span class="mw-headline"> Configuration example </span></h2> |
| <div dir="ltr" style="text-align: left;"><pre class="source-xml"><span class="sc3"><span class="re1"><DataSourceConnectionConfig</span> |
| <span class="re0">xmlns:xsi</span>=<span class="st0">"http://www.w3.org/2001/XMLSchema-instance"</span> |
| <span class="re0">xsi:noNamespaceSchemaLocation</span>=<span class="st0">"../org.eclipse.smila.connectivity.framework.agent.feed/schemas/FeedDataSourceConnectionConfigSchema.xsd"</span> |
| <span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><DataSourceID<span class="re2">></span></span></span>feeds<span class="sc3"><span class="re1"></DataSourceID<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><SchemaID<span class="re2">></span></span></span>org.eclipse.smila.connectivity.framework.agent.feed<span class="sc3"><span class="re1"></SchemaID<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><DataConnectionID<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Agent<span class="re2">></span></span></span>FeedAgent<span class="sc3"><span class="re1"></Agent<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></DataConnectionID<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><CompoundHandling<span class="re2">></span></span></span>Yes<span class="sc3"><span class="re1"></CompoundHandling<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Attributes<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Attribute</span> <span class="re0">Type</span>=<span class="st0">"Date"</span> <span class="re0">Name</span>=<span class="st0">"PublishDate"</span> <span class="re0">HashAttribute</span>=<span class="st0">"true"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><FeedAttributes<span class="re2">></span></span></span>PublishDate<span class="sc3"><span class="re1"></FeedAttributes<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></Attribute<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Attribute</span> <span class="re0">Type</span>=<span class="st0">"Date"</span> <span class="re0">Name</span>=<span class="st0">"LastModifiedDate"</span> <span class="re0">HashAttribute</span>=<span class="st0">"true"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><FeedAttributes<span class="re2">></span></span></span>UpdateDate<span class="sc3"><span class="re1"></FeedAttributes<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></Attribute<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Attribute</span> <span class="re0">Type</span>=<span class="st0">"String"</span> <span class="re0">Name</span>=<span class="st0">"Uri"</span> <span class="re0">KeyAttribute</span>=<span class="st0">"true"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><FeedAttributes<span class="re2">></span></span></span>Uri<span class="sc3"><span class="re1"></FeedAttributes<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></Attribute<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Attribute</span> <span class="re0">Type</span>=<span class="st0">"String"</span> <span class="re0">Name</span>=<span class="st0">"Links"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><FeedAttributes<span class="re2">></span></span></span>Links<span class="sc3"><span class="re1"></FeedAttributes<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></Attribute<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Attribute</span> <span class="re0">Type</span>=<span class="st0">"MObject"</span> <span class="re0">Name</span>=<span class="st0">"Contents"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><FeedAttributes<span class="re2">></span></span></span>Contents<span class="sc3"><span class="re1"></FeedAttributes<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></Attribute<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Attribute</span> <span class="re0">Type</span>=<span class="st0">"String"</span> <span class="re0">Name</span>=<span class="st0">"Title"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><FeedAttributes<span class="re2">></span></span></span>Title<span class="sc3"><span class="re1"></FeedAttributes<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></Attribute<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Attribute</span> <span class="re0">Type</span>=<span class="st0">"MObject"</span> <span class="re0">Name</span>=<span class="st0">"Authors"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><FeedAttributes<span class="re2">></span></span></span>Authors<span class="sc3"><span class="re1"></FeedAttributes<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></Attribute<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></Attributes<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Process<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><UpdateInterval<span class="re2">></span></span></span>300<span class="sc3"><span class="re1"></UpdateInterval<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><FeedUrl<span class="re2">></span></span></span>http://dev.eclipse.org/newslists/news.eclipse.rt.smila/maillist.rss<span class="sc3"><span class="re1"></FeedUrl<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><FeedUrl<span class="re2">></span></span></span>http://search.twitter.com/search.atom?q=smila<span class="sc3"><span class="re1"></FeedUrl<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></Process<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></DataSourceConnectionConfig<span class="re2">></span></span></span></pre></div> |
| <a name="Output_example"></a><h2> <span class="mw-headline"> Output example </span></h2> |
| <p>A record created by the Feed agent using the default configuration may have the following or a similar structure: |
| </p> |
| <div dir="ltr" style="text-align: left;"><pre class="source-xml"><span class="sc3"><span class="re1"><Record</span> <span class="re0">xmlns</span>=<span class="st0">"http://www.eclipse.org/smila/record"</span> <span class="re0">version</span>=<span class="st0">"1.0"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><Val</span> <span class="re0">key</span>=<span class="st0">"_recordid"</span><span class="re2">></span></span>feed:<span class="sc1">&lt;</span>Url=http://dev.eclipse.org/mhonarc/newsLists/news.eclipse.rt.smila/msg00022.html<span class="sc3"><span class="re1"></Val<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Val</span> <span class="re0">key</span>=<span class="st0">"_source"</span><span class="re2">></span></span>feed<span class="sc3"><span class="re1"></Val<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Val</span> <span class="re0">key</span>=<span class="st0">"PublishDate"</span><span class="re2">></span></span> type="datetime">2009-04-30T13:28:34+0100<span class="sc3"><span class="re1"></Val<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Val</span> <span class="re0">key</span>=<span class="st0">"Url"</span><span class="re2">></span></span>http://dev.eclipse.org/mhonarc/newsLists/news.eclipse.rt.smila/msg00022.html<span class="sc3"><span class="re1"></Val<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Val</span> <span class="re0">key</span>=<span class="st0">"MimeType"</span><span class="re2">></span></span>text/html<span class="sc3"><span class="re1"></Val<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Val</span> <span class="re0">key</span>=<span class="st0">"Title"</span><span class="re2">></span></span>[news.eclipse.rt.smila] Re: Semantic Software Engineering<span class="sc3"><span class="re1"></Val<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Seq</span> <span class="re0">key</span>=<span class="st0">"Contents"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><Map<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Val</span> <span class="re0">key</span>=<span class="st0">"Value"</span><span class="re2">></span></span>Hi J<span class="sc1">&#xFC;</span>rgen, The idea is to support companies and projects that rely on semantic technologies (especially in RDF or OWL) with a set of plugins that they can reuse for their tooling. The first thing would be support for loading an ontology, searching for conc...<span class="sc3"><span class="re1"></Val<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Val</span> <span class="re0">key</span>=<span class="st0">"Type"</span><span class="re2">></span></span>text/html<span class="sc3"><span class="re1"></Val<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></Map<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></Seq<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Seq</span> <span class="re0">key</span>=<span class="st0">"Authors"</span><span class="re2">></span></span> |
| <span class="sc3"><span class="re1"><Map<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"><Val</span> <span class="re0">key</span>=<span class="st0">"Name"</span><span class="re2">></span></span>lautenbacher@xxxxxxx (Florian Lautenbacher)<span class="sc3"><span class="re1"></Val<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></Map<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></Seq<span class="re2">></span></span></span> |
| <span class="sc3"><span class="re1"></Record<span class="re2">></span></span></span></pre></div> |
| <a name="See_also"></a><h2> <span class="mw-headline"> See also </span></h2> |
| <ul><li> <a href="Agent.html" title="SMILA/Documentation/Agent">Agent</a> |
| </li><li> <a href="Mock_Agent.html" title="SMILA/Documentation/Mock Agent">Mock Agent</a> |
| </li></ul> |
| <p><br /> |
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