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<td class="confluenceTd"><p> Maintainer: </p></td>
<td class="confluenceTd"><p> <a class="confluence-link confluence-userlink" data-username="jdeolive" href="/display/~jdeolive" data-linked-resource-id="14894" data-linked-resource-type="userinfo" username="jdeolive" data-linked-resource-default-alias="Justin Deoliveira" data-base-url="http://docs.codehaus.org">Justin Deoliveira</a> </p></td>
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<td class="confluenceTd"><p> Status: </p></td>
<td class="confluenceTd"><p> <table class="wysiwyg-macro" data-macro-name="excerpt" data-macro-parameters="atlassian-macro-output-type=INLINE" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2V4Y2VycHQ6YXRsYXNzaWFuLW1hY3JvLW91dHB1dC10eXBlPUlOTElORX0&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="RICH_TEXT"><tr><td class="wysiwyg-macro-body"><p> <img class="emoticon emoticon-yellow-star" data-emoticon-name="yellow-star" border="0" src="/s/en_GB/3278/15/_/images/icons/emoticons/star_yellow.png" alt="(star)" title="(star)" /> <img class="emoticon emoticon-yellow-star" data-emoticon-name="yellow-star" border="0" src="/s/en_GB/3278/15/_/images/icons/emoticons/star_yellow.png" alt="(star)" title="(star)" /> </p></td></tr></table> </p></td>
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<td class="confluenceTd"><p> Email Help: </p></td>
<td class="confluenceTd"><p> Geotools-gt2-users@lists.sourceforge.net </p></td>
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<td class="confluenceTd"><p> Volunteer: </p></td>
<td class="confluenceTd"><p> geotools-devel@lists.sourceforge.net </p></td>
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<p>Yes you heard me, there is no migration path if you use Feature directly in your application! What can you do about it?</p>

<p>You need to take the following steps:</p>
<ul class="alternate">
	<li>use Expression where ever possible to access your data (this will protect you and is good practice)</li>
	<li>book off some time to migrate your code</li>
</ul>

<p>The good news:</p>
<ul class="alternate">
	<li>we will provide a SimpleFeature interface as part of the new feature model, it will not be method compatible but will at least follow the same assumptions you are used to in GeoTools 2.2.x.</li>
	<li>there will be a clear series of renames you can apply to your code to fix SimpleFeature access in your code, but making use of Expression now is much smarter</li>
</ul>

<p>I am sorry but the API for TypeBuilder will not be migratable, we could try and make DataUtilities.spec work for you though.</p>

<h2>Recent Development and Status</h2>

<h3>Status on <a class="confluence-link" href="/display/GEOTOOLS/2.2.x" data-linked-resource-id="47446" data-linked-resource-type="page" data-linked-resource-default-alias="2.2.x" data-base-url="http://docs.codehaus.org">2.2.x</a></h3>
<p>For the stable <a class="confluence-link" href="/display/GEOTOOLS/2.2.x" data-linked-resource-id="47446" data-linked-resource-type="page" data-linked-resource-default-alias="2.2.x" data-base-url="http://docs.codehaus.org">2.2.x</a> branch the Feature module has:</p>
<ul class="alternate">
	<li>aquired a Random Access API in the form of FeatureList (yeah!) This will allow us to support the results of Filter 1.1</li>
	<li>cleaned up a lot of code around the use (and closure of) Iterators, see the ResourceCollection class</li>
	<li>Added FeatureVisitor api (working against FeatureCollection) allowing for efficient Aggregate functions and use of multiple processors for processing operations</li>
	<li>problems, it is a simple feature model (aka flat like a shapefile or database table)</li>
	<li>problems, the use of Factory is not complete - can only use FeatureType.create, FeatureFactory is not implementable</li>
	<li>problems, metadata is not complete (you cannot express everything needed for valid construction of a FeatureCollection)</li>
</ul>

<h3>Status on <a class="confluence-link" href="/display/GEOTOOLS/2.3.x" data-linked-resource-id="47443" data-linked-resource-type="page" data-linked-resource-default-alias="2.3.x" data-base-url="http://docs.codehaus.org">2.3.x</a></h3>

<p>For the <a class="confluence-link" href="/display/GEOTOOLS/2.3.x" data-linked-resource-id="47443" data-linked-resource-type="page" data-linked-resource-default-alias="2.3.x" data-base-url="http://docs.codehaus.org">2.3.x</a> branch the Feature module has:</p>
<ul class="alternate">
	<li>done nothing for fear of FM</li>
</ul>

<h3>Status on Feature Model branch</h3>

<p>For the <a class="confluence-link unresolved" data-content-title="FM" data-linked-resource-default-alias="FM" href="#">FM</a> branch the Feature module has been:</p>
<ul class="alternate">
	<li>been rewriten agains the latest GeoAPI interfaces</li>
	<li>been rewriten to allow for consisten use of Factory</li>
	<li>please see the FM branch for much more about all this</li>
</ul>

<h3>Outstanding Issues</h3>

<p>Issues with GeoAPI feature model:</p>
<img class="editor-inline-macro" src="/plugins/servlet/confluence/placeholder/macro?definition=e2ppcmFpc3N1ZXM6dXJsPWh0dHA6Ly9qaXJhLmNvZGVoYXVzLm9yZy9zZWN1cmUvSXNzdWVOYXZpZ2F0b3IuanNwYT92aWV3PXJzcyYmcGlkPTEwNzIwJnJlc29sdXRpb249LTEmY29tcG9uZW50PTExMTAyJnNvcnRlci9maWVsZD1wcmlvcml0eSZzb3J0ZXIvb3JkZXI9REVTQyZyZXNldD10cnVlJmRlY29yYXRvcj1ub25lfQ&amp;locale=en_GB&amp;version=2" data-macro-name="jiraissues" data-macro-parameters="url=http://jira.codehaus.org/secure/IssueNavigator.jspa?view\=rss&amp;&amp;pid\=10720&amp;resolution\=-1&amp;component\=11102&amp;sorter/field\=priority&amp;sorter/order\=DESC&amp;reset\=true&amp;decorator\=none">