| <!DOCTYPE HTML> |
| <html lang="en-US"> |
| <head> |
| <meta charset="UTF-8"> |
| <title>Spatial</title> |
| <meta name="viewport" content="width=device-width,initial-scale=1"> |
| <meta name="generator" content="Jekyll v3.7.3"> |
| <link rel="stylesheet" href="//fonts.googleapis.com/css?family=Lato:300,300italic,400,400italic,700,700italic,900"> |
| <link rel="stylesheet" href="/css/screen.css"> |
| <link rel="icon" type="image/x-icon" href="/favicon.ico"> |
| <!--[if lt IE 9]> |
| <script src="/js/html5shiv.min.js"></script> |
| <script src="/js/respond.min.js"></script> |
| <![endif]--> |
| </head> |
| |
| |
| <body class="wrap"> |
| <header role="banner"> |
| <div class="grid"> |
| <div class="unit center-on-mobiles"> |
| <h1> |
| <a href="/"> |
| <span class="sr-only">Apache Calcite</span> |
| <img src="/img/logo.svg" alt="Calcite Logo"> |
| </a> |
| </h1> |
| </div> |
| <nav class="main-nav"> |
| <ul> |
| <li class=""> |
| <a href="/">Home</a> |
| </li> |
| <li class=""> |
| <a href="/downloads/">Download</a> |
| </li> |
| <li class=""> |
| <a href="/community/">Community</a> |
| </li> |
| <li class=""> |
| <a href="/develop/">Develop</a> |
| </li> |
| <li class=""> |
| <a href="/news/">News</a> |
| </li> |
| <li class="current"> |
| <a href="/docs/">Docs</a> |
| </li> |
| </ul> |
| |
| </nav> |
| </div> |
| </header> |
| |
| |
| <section class="docs"> |
| <div class="grid"> |
| |
| <div class="docs-nav-mobile unit whole show-on-mobiles"> |
| <select onchange="if (this.value) window.location.href=this.value"> |
| <option value="">Navigate the docs…</option> |
| <optgroup label="Overview"> |
| </optgroup> |
| <optgroup label="Advanced"> |
| </optgroup> |
| <optgroup label="Avatica"> |
| </optgroup> |
| <optgroup label="Reference"> |
| </optgroup> |
| <optgroup label="Meta"> |
| </optgroup> |
| |
| </select> |
| </div> |
| |
| |
| <div class="unit four-fifths"> |
| <article> |
| <h1>Spatial</h1> |
| <!-- |
| |
| --> |
| |
| <p>Calcite is <a href="https://issues.apache.org/jira/browse/CALCITE-1968">aiming</a> to implement |
| OpenGIS Simple Features Implementation Specification for SQL, |
| <a href="http://www.opengeospatial.org/standards/sfs">version 1.2.1</a>, |
| a standard implemented by spatial databases such as |
| <a href="https://postgis.net/">PostGIS</a> |
| and <a href="http://www.h2gis.org/">H2GIS</a>.</p> |
| |
| <p>We also aim to add optimizer support for |
| <a href="https://issues.apache.org/jira/browse/CALCITE-1861">spatial indexes</a> |
| and other forms of query optimization.</p> |
| |
| <ul id="markdown-toc"> |
| <li><a href="#introduction" id="markdown-toc-introduction">Introduction</a></li> |
| <li><a href="#enabling-spatial-support" id="markdown-toc-enabling-spatial-support">Enabling spatial support</a></li> |
| <li><a href="#acknowledgements" id="markdown-toc-acknowledgements">Acknowledgements</a></li> |
| </ul> |
| |
| <h2 id="introduction">Introduction</h2> |
| |
| <p>A spatial database is a database that is optimized for storing and query data |
| that represents objects defined in a geometric space.</p> |
| |
| <p>Calcite’s support for spatial data includes:</p> |
| |
| <ul> |
| <li>A <a href="reference.html#data-types">GEOMETRY</a> data type and |
| <a href="reference.html#spatial-types">sub-types</a> including <code class="highlighter-rouge">POINT</code>, <code class="highlighter-rouge">LINESTRING</code> |
| and <code class="highlighter-rouge">POLYGON</code></li> |
| <li><a href="reference.html#spatial-functions">Spatial functions</a> (prefixed <code class="highlighter-rouge">ST_</code>; |
| we have implemented about 35 of the 150 in the OpenGIS specification)</li> |
| </ul> |
| |
| <p>and will at some point also include query rewrites to use spatial indexes.</p> |
| |
| <h2 id="enabling-spatial-support">Enabling spatial support</h2> |
| |
| <p>Though the <code class="highlighter-rouge">GEOMETRY</code> data type is built-in, the functions are not enabled by |
| default. You need to add <code class="highlighter-rouge">fun=spatial</code> to the JDBC connect string to enable |
| the functions. For example, <code class="highlighter-rouge">sqlline</code>:</p> |
| |
| <figure class="highlight"><pre><code class="language-sql" data-lang="sql"><span class="err">$</span> <span class="p">.</span><span class="o">/</span><span class="n">sqlline</span> |
| <span class="o">></span> <span class="o">!</span><span class="k">connect</span> <span class="n">jdbc</span><span class="p">:</span><span class="n">calcite</span><span class="p">:</span><span class="n">fun</span><span class="o">=</span><span class="n">spatial</span> <span class="nv">"sa"</span> <span class="nv">""</span> |
| <span class="k">SELECT</span> <span class="n">ST_PointFromText</span><span class="p">(</span><span class="s1">'POINT(-71.064544 42.28787)'</span><span class="p">);</span> |
| <span class="o">+</span><span class="c1">-------------------------------+</span> |
| <span class="o">|</span> <span class="n">EXPR</span><span class="err">$</span><span class="mi">0</span> <span class="o">|</span> |
| <span class="o">+</span><span class="c1">-------------------------------+</span> |
| <span class="o">|</span> <span class="err">{</span><span class="nv">"x"</span><span class="p">:</span><span class="o">-</span><span class="mi">71</span><span class="p">.</span><span class="mi">064544</span><span class="p">,</span><span class="nv">"y"</span><span class="p">:</span><span class="mi">42</span><span class="p">.</span><span class="mi">28787</span><span class="err">}</span> <span class="o">|</span> |
| <span class="o">+</span><span class="c1">-------------------------------+</span> |
| <span class="mi">1</span> <span class="k">row</span> <span class="n">selected</span> <span class="p">(</span><span class="mi">0</span><span class="p">.</span><span class="mi">323</span> <span class="n">seconds</span><span class="p">)</span></code></pre></figure> |
| |
| <h2 id="acknowledgements">Acknowledgements</h2> |
| |
| <p>Calcite’s OpenGIS implementation uses the |
| <a href="https://github.com/Esri/geometry-api-java">Esri geometry API</a>. Thanks for the |
| help we received from their community.</p> |
| |
| <p>While developing this feature, we made extensive use of the |
| PostGIS documentation and tests, |
| and the H2GIS documentation, and consulted both as reference implementations |
| when the specification wasn’t clear. Thank you to these awesome projects.</p> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <div class="section-nav"> |
| <div class="left align-right"> |
| |
| |
| |
| <a href="/docs/adapter.html" class="prev">Previous</a> |
| |
| </div> |
| <div class="right align-left"> |
| |
| |
| |
| |
| |
| <a href="/docs/stream.html" class="next">Next</a> |
| |
| </div> |
| </div> |
| <div class="clear"></div> |
| |
| |
| </article> |
| </div> |
| |
| <div class="unit one-fifth hide-on-mobiles"> |
| <aside> |
| |
| <h4>Overview</h4> |
| |
| |
| <ul> |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/index.html">Background</a></li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/tutorial.html">Tutorial</a></li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/algebra.html">Algebra</a></li> |
| |
| |
| </ul> |
| |
| |
| <h4>Advanced</h4> |
| |
| |
| <ul> |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/adapter.html">Adapters</a></li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class="current"><a href="/docs/spatial.html">Spatial</a></li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/stream.html">Streaming</a></li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/materialized_views.html">Materialized Views</a></li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/lattice.html">Lattices</a></li> |
| |
| |
| </ul> |
| |
| |
| <h4>Avatica</h4> |
| |
| |
| <ul> |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/avatica_overview.html">Overview</a></li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/avatica_roadmap.html">Roadmap</a></li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/avatica_json_reference.html">JSON Reference</a></li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/avatica_protobuf_reference.html">Protobuf Reference</a></li> |
| |
| |
| </ul> |
| |
| |
| <h4>Reference</h4> |
| |
| |
| <ul> |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/reference.html">SQL language</a></li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/model.html">JSON/YAML models</a></li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/howto.html">HOWTO</a></li> |
| |
| |
| </ul> |
| |
| |
| <h4>Meta</h4> |
| |
| |
| <ul> |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/history.html">History</a></li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/docs/powered_by.html">Powered by Calcite</a></li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/apidocs">API</a></li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class=""><a href="/testapidocs">Test API</a></li> |
| |
| |
| </ul> |
| |
| |
| </aside> |
| </div> |
| |
| |
| <div class="clear"></div> |
| |
| </div> |
| </section> |
| |
| |
| <footer role="contentinfo"> |
| <div id="poweredby"> |
| <a href="http://www.apache.org/"> |
| <span class="sr-only">Apache</span> |
| <img src="/img/feather.png" width="190" height="77" alt="Apache Logo"></a> |
| </div> |
| <div id="copyright"> |
| <p>The contents of this website are Copyright © 2019 |
| <a href="https://www.apache.org/">Apache Software Foundation</a> |
| under the terms of |
| the <a href="https://www.apache.org/licenses/"> |
| Apache License v2</a>. Apache Calcite and its logo are |
| trademarks of the Apache Software Foundation.</p> |
| </div> |
| </footer> |
| |
| <script> |
| var anchorForId = function (id) { |
| var anchor = document.createElement("a"); |
| anchor.className = "header-link"; |
| anchor.href = "#" + id; |
| anchor.innerHTML = "<span class=\"sr-only\">Permalink</span><i class=\"fa fa-link\"></i>"; |
| anchor.title = "Permalink"; |
| return anchor; |
| }; |
| |
| var linkifyAnchors = function (level, containingElement) { |
| var headers = containingElement.getElementsByTagName("h" + level); |
| for (var h = 0; h < headers.length; h++) { |
| var header = headers[h]; |
| |
| if (typeof header.id !== "undefined" && header.id !== "") { |
| header.appendChild(anchorForId(header.id)); |
| } |
| } |
| }; |
| |
| document.onreadystatechange = function () { |
| if (this.readyState === "complete") { |
| var contentBlock = document.getElementsByClassName("docs")[0] || document.getElementsByClassName("news")[0]; |
| if (!contentBlock) { |
| return; |
| } |
| for (var level = 1; level <= 6; level++) { |
| linkifyAnchors(level, contentBlock); |
| } |
| } |
| }; |
| </script> |
| |
| |
| </body> |
| </html> |
