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<table class="confluenceTable"><tbody><tr><th class="confluenceTh"><p>Contact:</p></th><td class="confluenceTd"><p><a class="confluence-link confluence-userlink" data-username="username" href="/display/~username" data-linked-resource-id="41226" data-linked-resource-type="userinfo" username="username" data-linked-resource-default-alias="full name" data-base-url="http://docs.codehaus.org">Niels</a> Charlier</p></td></tr><tr><th class="confluenceTh"><p>Tracker:</p></th><td class="confluenceTd"><a href="http://jira.codehaus.org/browse/GEOT-4344">GEOT-4344</a></td></tr><tr><th class="confluenceTh"><p>Tagline:</p></th><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"> </td></tr></table></p></td></tr></tbody></table><table class="wysiwyg-macro" data-macro-name="section" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e3NlY3Rpb259&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="RICH_TEXT"><tr><td class="wysiwyg-macro-body"><table class="wysiwyg-macro" data-macro-name="column" data-macro-parameters="width=70%" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2NvbHVtbjp3aWR0aD03MCV9&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="RICH_TEXT"><tr><td class="wysiwyg-macro-body"><img class="editor-inline-macro" src="/plugins/servlet/confluence/placeholder/macro?definition=e3RvY30&amp;locale=en_GB&amp;version=2" data-macro-name="toc"></td></tr></table><table class="wysiwyg-macro" data-macro-name="column" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2NvbHVtbn0&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="RICH_TEXT"><tr><td class="wysiwyg-macro-body"><p>Children:</p><img class="editor-inline-macro" src="/plugins/servlet/confluence/placeholder/macro?definition=e2NoaWxkcmVufQ&amp;locale=en_GB&amp;version=2" data-macro-name="children"></td></tr></table></td></tr></table><h1>Description</h1><p>The idea is to split the app-schema module in three:</p><ul style="list-style-type: square;"><li>The first part would contain everything that helps with complex features in general and can be moved to gt-main: mainly builders</li><li>The second part would contain everything that helps with complex features in general and depends on XSD: evaluating filters against them (property accessor, x-path evaluation), building complex feature types from XSD. These classes do not rely on specific schemes like GML, etc... apart form XS.</li><li>The third part will contain anything that is app-schema specific: creating complex feature datastores with <em>mapping files</em>.</li></ul><p>The third part would continue as the gt-app-schema module. The first part will be moved to gt-main. More specifically, the following classes will be moved:</p><ul><li>org.geotools.feature.TypeBuilder</li><li>org.geotools.util.ComplexAttributeConverterFactory</li><li>org.geotools.feature.AttributeBuilder (PARTLY)</li><li>org.geotools.feature.Types (PARTLY)</li></ul><p>The second would split off and become a new module 'gt-complex'. More specifically, this 'gt-complex' module will consist of the following classes that are now in the gt-app-schema module.</p><ul style="list-style-type: square;"><li>org.geotools.filter.expression.FeatureProperty + complete org.geotools.feature.xpath package</li><li>complete org.geotools.feature.type package</li><li>org.geotools.data.complex.filter.XPath (PARTLY)</li><li>org.geotools.data.complex.FeatureTypeRegistry (PARTLY) + depending classes (for building types from xsd)</li><li>org.geotools.data.complex.config.EmfAppSchemaReader</li></ul><p>Considering the 'partly' ported classes.</p><ul><li>AttributeBuilder - will still need an extended version in app-schema to support the NonFeatureTypeProxy which uses mappings</li><li>XPath , Types - are just classes of different static methods that need to be split in two</li><li>FeatureTypeRegistry will be made more generic using a helper interface 'FeatureTypeRegistryHelper, app-schema can have its specific implementation</li></ul><p>The gt-complex module will have a dependency on the module gt-app-schema-resolver.</p><h1>Status</h1><p>This proposal is currently being voted on:</p><ul><li><a class="confluence-link confluence-userlink" data-username="aaime" href="/display/~aaime" data-linked-resource-id="787" data-linked-resource-type="userinfo" username="aaime" data-linked-resource-default-alias="Andrea Aime" data-base-url="http://docs.codehaus.org">Andrea Aime</a> +1</li><li><a class="confluence-link confluence-userlink" data-username="bencaradocdavies" href="/display/~bencaradocdavies" data-linked-resource-id="60850191" data-linked-resource-type="userinfo" username="bencaradocdavies" data-linked-resource-default-alias="Ben Caradoc-Davies" data-base-url="http://docs.codehaus.org">Ben Caradoc-Davies</a> +1</li><li><a class="confluence-link confluence-userlink" data-username="christian.mueller@nvoe.at" href="/display/~christian.mueller@nvoe.at" data-linked-resource-id="75366406" data-linked-resource-type="userinfo" username="christian.mueller@nvoe.at" data-linked-resource-default-alias="Christian Mueller" data-base-url="http://docs.codehaus.org">Christian Mueller</a></li><li><a class="confluence-link confluence-userlink" data-username="ianturton" href="/display/~ianturton" data-linked-resource-id="800" data-linked-resource-type="userinfo" username="ianturton" data-linked-resource-default-alias="Ian Turton" data-base-url="http://docs.codehaus.org">Ian Turton</a> +1</li><li><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></li><li><a class="confluence-link confluence-userlink" data-username="jive" href="/display/~jive" data-linked-resource-id="1159" data-linked-resource-type="userinfo" username="jive" data-linked-resource-default-alias="Jody Garnett" data-base-url="http://docs.codehaus.org">Jody Garnett</a></li><li><a class="confluence-link confluence-userlink" data-username="simboss" href="/display/~simboss" data-linked-resource-id="10743" data-linked-resource-type="userinfo" username="simboss" data-linked-resource-default-alias="Simone Giannecchini" data-base-url="http://docs.codehaus.org">Simone Giannecchini</a></li></ul><h1>Tasks</h1><p><em>This section is used to make sure your proposal is complete (did you remember documentation?) and has enough paid or volunteer time lined up to be a success</em></p><table class="confluenceTable"><tbody><tr><th class="confluenceTh"><p> </p></th><td class="confluenceTd"><p>no progress</p></td><th class="confluenceTh"><p><img class="emoticon emoticon-tick" data-emoticon-name="tick" border="0" src="/s/en_GB/3278/15/_/images/icons/emoticons/check.png" alt="(tick)" title="(tick)" /></p></th><td class="confluenceTd"><p>done</p></td><th class="confluenceTh"><p><img class="emoticon emoticon-cross" data-emoticon-name="cross" border="0" src="/s/en_GB/3278/15/_/images/icons/emoticons/error.png" alt="(error)" title="(error)" /></p></th><td class="confluenceTd"><p>impeded</p></td><th class="confluenceTh"><p><img class="emoticon emoticon-warning" data-emoticon-name="warning" border="0" src="/s/en_GB/3278/15/_/images/icons/emoticons/warning.png" alt="(warning)" title="(warning)" /></p></th><td class="confluenceTd"><p>lack mandate/funds/time</p></td><td class="confluenceTd"><p><img class="emoticon emoticon-question" data-emoticon-name="question" border="0" src="/s/en_GB/3278/15/_/images/icons/emoticons/help_16.png" alt="(question)" title="(question)" /></p></td><td class="confluenceTd"><p>volunteer needed</p></td></tr></tbody></table><ol><li><img class="emoticon emoticon-tick" data-emoticon-name="tick" border="0" src="/s/en_GB/3278/15/_/images/icons/emoticons/check.png" alt="(tick)" title="(tick)" /> NC: move/copy all the classes (specified above) into new module 'gt-complex'</li><li><img class="emoticon emoticon-tick" data-emoticon-name="tick" border="0" src="/s/en_GB/3278/15/_/images/icons/emoticons/check.png" alt="(tick)" title="(tick)" /> NC: refactor app-schema to use the gt-complex module and the new featuretyperegistry</li><li><img class="emoticon emoticon-tick" data-emoticon-name="tick" border="0" src="/s/en_GB/3278/15/_/images/icons/emoticons/check.png" alt="(tick)" title="(tick)" /> NC: Pull request for <a class="external-link" href="http://jira.codehaus.org/browse/GEOT-4344" rel="nofollow">GEOT-4344</a> <br /><ul><li><a href="https://github.com/geotools/geotools/pull/88">https://github.com/geotools/geotools/pull/88</a> complex model refactoring</li></ul></li><li>NC: review the geotools documentation and update<ul><li>upgrade instructions for 9.x will need to mention this new dependency</li></ul></li></ol><h1>API Changes</h1><p>The API will not change because of this.</p><h2>Documentation Changes</h2><p>gt-complex should get its own page in the GeoTools User Documentation.<em> </em>The application-schema documentation page says &quot;Key to the configuration of the app-schema module is the <em>mapping file</em>&quot;. The gt-complex module provides support for complex features but has nothing to do with mapping files.</p><p><em><br /></em></p><p><em><br /></em></p><p><em><br /></em></p>