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<div class="sub-title"><span class="module-label-in-package">Module</span>&nbsp;<a href="../../../../../module-summary.html">org.apache.sis.referencing</a></div>
<h1 title="Package org.apache.sis.referencing.factory" class="title">Package org.apache.sis.referencing.factory</h1>
</div>
<hr>
<div class="package-signature">package <span class="element-name">org.apache.sis.referencing.factory</span></div>
<section class="package-description" id="package-description">
<div class="block">Creates Coordinate Reference System (CRS) objects from given properties or authority codes.
This package provides two kinds of factories:
<ul class="verbose">
<li><a href="GeodeticAuthorityFactory.html" title="class in org.apache.sis.referencing.factory"><code>Geodetic­Authority­Factory</code></a>
creates geodetic objects from codes defined by an authority.
An <cite>authority</cite> is an organization that maintains definitions of authority codes.
An <cite>authority code</cite> is a compact string defined by an authority to reference a particular spatial reference object.
A frequently used set of authority codes is the <a href="https://epsg.org/">EPSG geodetic dataset</a>,
a database of coordinate systems and other spatial referencing objects where each object has a code number ID.</li>
<li><a href="GeodeticObjectFactory.html" title="class in org.apache.sis.referencing.factory"><code>Geodetic­Object­Factory</code></a>
creates complex objects that cannot be created by the authority factories.
Allows also <cite>inversion of control</cite> when used with the
<a href="sql/EPSGFactory.html" title="class in org.apache.sis.referencing.factory.sql">EPSG authority factory</a>
or with the <a href="../../io/wkt/WKTFormat.html" title="class in org.apache.sis.io.wkt">WKT parser</a>.</li>
</ul>
Authority factories available in Apache SIS are listed below.
Factories defined in this package do not require any configuration or external resources.
Factories defined in the <a href="sql/package-summary.html"><code>sql</code></a> sub-package require a connection to a database.
<table class="sis">
<caption>Authority factory implementations</caption>
<tr>
<th>Authorities</th>
<th>Implementation class</th>
<th>Conditions</th>
</tr><tr>
<td><code>CRS</code>, <code>AUTO</code> and <code>AUTO2</code></td>
<td><a href="CommonAuthorityFactory.html" title="class in org.apache.sis.referencing.factory"><code>CommonAuthorityFactory</code></a></td>
<td>None.</td>
</tr><tr>
<td><code>EPSG</code></td>
<td><a href="sql/EPSGFactory.html" title="class in org.apache.sis.referencing.factory.sql"><code>EPSGFactory</code></a></td>
<td>Requires installation of EPSG dataset.</td>
</tr>
</table></div>
<dl class="notes">
<dt>Since:</dt>
<dd>0.6</dd>
</dl>
</section>
<section class="summary">
<ul class="summary-list">
<li>
<div id="related-package-summary">
<div class="caption"><span>Related Packages</span></div>
<div class="summary-table three-column-summary">
<div class="table-header col-first">Module</div>
<div class="table-header col-second">Package</div>
<div class="table-header col-last">Description</div>
<div class="col-plain even-row-color"><a href="../../../../../module-summary.html">org.apache.sis.referencing</a></div>
<div class="col-first even-row-color"><a href="../package-summary.html">org.apache.sis.referencing</a></div>
<div class="col-last even-row-color">
<div class="block">Base classes for reference systems used for general positioning.</div>
</div>
<div class="col-plain odd-row-color"><a href="../../../../../module-summary.html">org.apache.sis.referencing</a></div>
<div class="col-first odd-row-color"><a href="sql/package-summary.html">org.apache.sis.referencing.factory.sql</a></div>
<div class="col-last odd-row-color">
<div class="block">Factories for geodetic objects defined in a SQL database, typically the EPSG dataset.</div>
</div>
<div class="col-plain even-row-color"><a href="../../../../../module-summary.html">org.apache.sis.referencing</a></div>
<div class="col-first even-row-color"><a href="../crs/package-summary.html">org.apache.sis.referencing.crs</a></div>
<div class="col-last even-row-color">
<div class="block">Coordinate Reference System (CRS) definitions as coordinate systems related to the earth through datum.</div>
</div>
<div class="col-plain odd-row-color"><a href="../../../../../module-summary.html">org.apache.sis.referencing</a></div>
<div class="col-first odd-row-color"><a href="../cs/package-summary.html">org.apache.sis.referencing.cs</a></div>
<div class="col-last odd-row-color">
<div class="block">Coordinate System (CS) definitions as the set of coordinate system axes that spans the coordinate space.</div>
</div>
<div class="col-plain even-row-color"><a href="../../../../../module-summary.html">org.apache.sis.referencing</a></div>
<div class="col-first even-row-color"><a href="../datum/package-summary.html">org.apache.sis.referencing.datum</a></div>
<div class="col-last even-row-color">
<div class="block">Relationship of a <code>Coordinate­System</code> (an abstract mathematical entity) to the earth or other system.</div>
</div>
<div class="col-plain odd-row-color"><a href="../../../../../../org.apache.sis.referencing.gazetteer/module-summary.html">org.apache.sis.referencing.gazetteer</a></div>
<div class="col-first odd-row-color"><a href="../../../../../../org.apache.sis.referencing.gazetteer/org/apache/sis/referencing/gazetteer/package-summary.html">org.apache.sis.referencing.gazetteer</a></div>
<div class="col-last odd-row-color">
<div class="block">Mapping between geographic identifiers (addresses, grid indexes…) and locations (descriptions, coordinates…).</div>
</div>
<div class="col-plain even-row-color"><a href="../../../../../module-summary.html">org.apache.sis.referencing</a></div>
<div class="col-first even-row-color"><a href="../operation/package-summary.html">org.apache.sis.referencing.operation</a></div>
<div class="col-last even-row-color">
<div class="block">Relationship between any two <a href="../crs/AbstractCRS.html" title="class in org.apache.sis.referencing.crs">Coordinate Reference Systems</a> (CRS).</div>
</div>
</div>
</div>
</li>
<li>
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<div class="table-header col-first">Class</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color class-summary class-summary-tab2"><a href="CommonAuthorityFactory.html" title="class in org.apache.sis.referencing.factory">CommonAuthorityFactory</a></div>
<div class="col-last even-row-color class-summary class-summary-tab2">
<div class="block">Creates coordinate reference systems in the "<code>OGC</code>", "<code>CRS</code>" or <code>"AUTO(2)"</code> namespaces.</div>
</div>
<div class="col-first odd-row-color class-summary class-summary-tab2"><a href="ConcurrentAuthorityFactory.html" title="class in org.apache.sis.referencing.factory">ConcurrentAuthorityFactory</a>&lt;DAO extends <a href="GeodeticAuthorityFactory.html" title="class in org.apache.sis.referencing.factory">GeodeticAuthorityFactory</a>&gt;</div>
<div class="col-last odd-row-color class-summary class-summary-tab2">
<div class="block">A concurrent authority factory that caches all objects created by another factory.</div>
</div>
<div class="col-first even-row-color class-summary class-summary-tab5"><a href="FactoryDataException.html" title="class in org.apache.sis.referencing.factory">FactoryDataException</a></div>
<div class="col-last even-row-color class-summary class-summary-tab5">
<div class="block">Thrown when a factory contains invalid data.</div>
</div>
<div class="col-first odd-row-color class-summary class-summary-tab2"><a href="GeodeticAuthorityFactory.html" title="class in org.apache.sis.referencing.factory">GeodeticAuthorityFactory</a></div>
<div class="col-last odd-row-color class-summary class-summary-tab2">
<div class="block">Creates geodetic objects from codes defined by an authority.</div>
</div>
<div class="col-first even-row-color class-summary class-summary-tab2"><a href="GeodeticObjectFactory.html" title="class in org.apache.sis.referencing.factory">GeodeticObjectFactory</a></div>
<div class="col-last even-row-color class-summary class-summary-tab2">
<div class="block">Creates <a href="../crs/AbstractCRS.html" title="class in org.apache.sis.referencing.crs">Coordinate Reference System</a> (CRS) implementations,
with their <a href="../cs/AbstractCS.html" title="class in org.apache.sis.referencing.cs">Coordinate System</a> (CS)
and <a href="../datum/AbstractDatum.html" title="class in org.apache.sis.referencing.datum">Datum</a> components.</div>
</div>
<div class="col-first odd-row-color class-summary class-summary-tab2"><a href="IdentifiedObjectFinder.html" title="class in org.apache.sis.referencing.factory">IdentifiedObjectFinder</a></div>
<div class="col-last odd-row-color class-summary class-summary-tab2">
<div class="block">Searches in an authority factory for objects approximately equal to a given object.</div>
</div>
<div class="col-first even-row-color class-summary class-summary-tab3"><a href="IdentifiedObjectFinder.Domain.html" title="enum class in org.apache.sis.referencing.factory">IdentifiedObjectFinder.Domain</a></div>
<div class="col-last even-row-color class-summary class-summary-tab3">
<div class="block">The domain of the search (for example whether to include deprecated objects in the search).</div>
</div>
<div class="col-first odd-row-color class-summary class-summary-tab2"><a href="IdentifiedObjectSet.html" title="class in org.apache.sis.referencing.factory">IdentifiedObjectSet</a>&lt;T extends <a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/IdentifiedObject.html" title="class or interface in org.opengis.referencing" class="external-link">IdentifiedObject</a>&gt;</div>
<div class="col-last odd-row-color class-summary class-summary-tab2">
<div class="block">A lazy set of <code>Identified­Object</code> instances created from their authority codes only when first needed.</div>
</div>
<div class="col-first even-row-color class-summary class-summary-tab5"><a href="InvalidGeodeticParameterException.html" title="class in org.apache.sis.referencing.factory">InvalidGeodeticParameterException</a></div>
<div class="col-last even-row-color class-summary class-summary-tab5">
<div class="block">Thrown when a factory <code>create­Foo(…)</code> method is given invalid parameters.</div>
</div>
<div class="col-first odd-row-color class-summary class-summary-tab5"><a href="MissingFactoryResourceException.html" title="class in org.apache.sis.referencing.factory">MissingFactoryResourceException</a></div>
<div class="col-last odd-row-color class-summary class-summary-tab5">
<div class="block">Thrown when a particular object cannot be created because a resource is missing.</div>
</div>
<div class="col-first even-row-color class-summary class-summary-tab2"><a href="MultiAuthoritiesFactory.html" title="class in org.apache.sis.referencing.factory">MultiAuthoritiesFactory</a></div>
<div class="col-last even-row-color class-summary class-summary-tab2">
<div class="block">A factory that delegates the object creation to another factory determined from the <var>authority</var> part
in “<var>authority</var>:<var>code</var>” arguments.</div>
</div>
<div class="col-first odd-row-color class-summary class-summary-tab5"><a href="NoSuchAuthorityFactoryException.html" title="class in org.apache.sis.referencing.factory">NoSuchAuthorityFactoryException</a></div>
<div class="col-last odd-row-color class-summary class-summary-tab5">
<div class="block">Thrown when no factory has been found for a given authority name.</div>
</div>
<div class="col-first even-row-color class-summary class-summary-tab5"><a href="UnavailableFactoryException.html" title="class in org.apache.sis.referencing.factory">UnavailableFactoryException</a></div>
<div class="col-last even-row-color class-summary class-summary-tab5">
<div class="block">Thrown when a whole factory cannot be created because a resource is missing.</div>
</div>
</div>
</div>
</div>
</li>
</ul>
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