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| <h1 id="Lucene_Net_Spatial_Queries" data-uid="Lucene.Net.Spatial.Queries" class="text-break">Namespace Lucene.Net.Spatial.Queries |
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| <p>Spatial Query options useful for client side requests</p> |
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| <div class="markdown level0 conceptual"></div> |
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| <h3 id="classes">Classes |
| </h3> |
| <h4><a class="xref" href="Lucene.Net.Spatial.Queries.SpatialArgs.html">SpatialArgs</a></h4> |
| <section><p>Principally holds the query <span class="xref">Spatial4n.Core.Shapes.IShape</span> and the <a class="xref" href="Lucene.Net.Spatial.Queries.SpatialOperation.html">SpatialOperation</a>. |
| It's used as an argument to some methods on <a class="xref" href="Lucene.Net.Spatial.SpatialStrategy.html">SpatialStrategy</a>.</p> |
| <div class="lucene-block lucene-experimental">This is a Lucene.NET EXPERIMENTAL API, use at your own risk</div></section> |
| <h4><a class="xref" href="Lucene.Net.Spatial.Queries.SpatialArgsParser.html">SpatialArgsParser</a></h4> |
| <section><p>Parses a string that usually looks like "OPERATION(SHAPE)" into a <a class="xref" href="Lucene.Net.Spatial.Queries.SpatialArgs.html">SpatialArgs</a> |
| object. The set of operations supported are defined in <a class="xref" href="Lucene.Net.Spatial.Queries.SpatialOperation.html">SpatialOperation</a>, such |
| as "Intersects" being a common one. The shape portion is defined by WKT <span class="xref">Spatial4n.Core.IO.WktShapeParser</span>, |
| but it can be overridden/customized via <a class="xref" href="Lucene.Net.Spatial.Queries.SpatialArgsParser.html#Lucene_Net_Spatial_Queries_SpatialArgsParser_ParseShape_System_String_Spatial4n_Core_Context_SpatialContext_">ParseShape(String, SpatialContext)</a>. |
| There are some optional name-value pair parameters that follow the closing parenthesis. Example:</p> |
| <pre><code> Intersects(ENVELOPE(-10,-8,22,20)) distErrPct=0.025</code></pre> |
| <p><p> |
| In the future it would be good to support something at least semi-standardized like a |
| variant of <a href="http://docs.geoserver.org/latest/en/user/filter/ecql_reference.html#spatial-predicate"> |
| [E]CQL</a>.</p> |
| <div class="lucene-block lucene-experimental">This is a Lucene.NET EXPERIMENTAL API, use at your own risk</div></section> |
| <h4><a class="xref" href="Lucene.Net.Spatial.Queries.SpatialOperation.html">SpatialOperation</a></h4> |
| <section><p>A clause that compares a stored geometry to a supplied geometry. For more |
| explanation of each operation, consider looking at the source implementation |
| of <a class="xref" href="Lucene.Net.Spatial.Queries.SpatialOperation.html#Lucene_Net_Spatial_Queries_SpatialOperation_Evaluate_Spatial4n_Core_Shapes_IShape_Spatial4n_Core_Shapes_IShape_">Evaluate(IShape, IShape)</a>. |
| <p> |
| See <a href="http://edndoc.esri.com/arcsde/9.1/general_topics/understand_spatial_relations.htm"> |
| ESRIs docs on spatial relations</a> |
| </p></p> |
| <div class="lucene-block lucene-experimental">This is a Lucene.NET EXPERIMENTAL API, use at your own risk</div></section> |
| <h4><a class="xref" href="Lucene.Net.Spatial.Queries.UnsupportedSpatialOperation.html">UnsupportedSpatialOperation</a></h4> |
| <section><p>Exception thrown when the <a class="xref" href="Lucene.Net.Spatial.SpatialStrategy.html">SpatialStrategy</a> cannot implement the requested operation.</p> |
| <div class="lucene-block lucene-experimental">This is a Lucene.NET EXPERIMENTAL API, use at your own risk</div></section> |
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