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| <h2 title="Class Contexts" class="title">Class Contexts</h2> |
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| <li>java.lang.Object</li> |
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| <pre>public class <span class="typeNameLabel">Contexts</span> |
| extends java.lang.Object</pre> |
| <div class="block">Utilities for <a href="Context.html" title="interface in org.apache.calcite.plan"><code>Context</code></a>.</div> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Class</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="Contexts.ChainContext.html" title="class in org.apache.calcite.plan">Contexts.ChainContext</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Context that wraps a chain of contexts.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>(package private) static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="Contexts.EmptyContext.html" title="class in org.apache.calcite.plan">Contexts.EmptyContext</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Empty context.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="Contexts.WrapContext.html" title="class in org.apache.calcite.plan">Contexts.WrapContext</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Context that wraps an object.</div> |
| </td> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <th class="colLast" scope="col">Description</th> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="Contexts.EmptyContext.html" title="class in org.apache.calcite.plan">Contexts.EmptyContext</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#EMPTY_CONTEXT">EMPTY_CONTEXT</a></span></code></th> |
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| <td class="colFirst"><code>private </code></td> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">Contexts</a></span>()</code></th> |
| <td class="colLast"> </td> |
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| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>private static void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#build(java.util.List,org.apache.calcite.plan.Context)">build</a></span>​(java.util.List<<a href="Context.html" title="interface in org.apache.calcite.plan">Context</a>> list, |
| <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a> context)</code></th> |
| <td class="colLast"> |
| <div class="block">Recursively populates a list of contexts.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>private static <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#chain(java.lang.Iterable)">chain</a></span>​(java.lang.Iterable<? extends <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a>> contexts)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#chain(org.apache.calcite.plan.Context...)">chain</a></span>​(<a href="Context.html" title="interface in org.apache.calcite.plan">Context</a>... contexts)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a context that wraps a list of contexts.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#empty()">empty</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a context that returns null for all inquiries.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#of(java.lang.Object)">of</a></span>​(java.lang.Object o)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a context that wraps an object.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#of(java.lang.Object...)">of</a></span>​(java.lang.Object... os)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a context that wraps an array of objects, ignoring any nulls.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#withConfig(org.apache.calcite.config.CalciteConnectionConfig)">withConfig</a></span>​(<a href="../config/CalciteConnectionConfig.html" title="interface in org.apache.calcite.config">CalciteConnectionConfig</a> config)</code></th> |
| <td class="colLast"> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="deprecationComment">Use <a href="#of(java.lang.Object)"><code>of(java.lang.Object)</code></a></div> |
| </div> |
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| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
| </ul> |
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| <h4>EMPTY_CONTEXT</h4> |
| <pre>public static final <a href="Contexts.EmptyContext.html" title="class in org.apache.calcite.plan">Contexts.EmptyContext</a> EMPTY_CONTEXT</pre> |
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| <h4>Contexts</h4> |
| <pre>private Contexts()</pre> |
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| <h4>withConfig</h4> |
| <pre class="methodSignature">@Deprecated |
| public static <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a> withConfig​(<a href="../config/CalciteConnectionConfig.html" title="interface in org.apache.calcite.config">CalciteConnectionConfig</a> config)</pre> |
| <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="deprecationComment">Use <a href="#of(java.lang.Object)"><code>of(java.lang.Object)</code></a></div> |
| </div> |
| <div class="block">Returns a context that contains a |
| <a href="../config/CalciteConnectionConfig.html" title="interface in org.apache.calcite.config"><code>CalciteConnectionConfig</code></a>.</div> |
| </li> |
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| <h4>empty</h4> |
| <pre class="methodSignature">public static <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a> empty()</pre> |
| <div class="block">Returns a context that returns null for all inquiries.</div> |
| </li> |
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| <h4>of</h4> |
| <pre class="methodSignature">public static <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a> of​(java.lang.Object o)</pre> |
| <div class="block">Returns a context that wraps an object. |
| |
| <p>A call to <code>unwrap(C)</code> will return <code>target</code> if it is an |
| instance of <code>C</code>.</div> |
| </li> |
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| </a> |
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| <h4>of</h4> |
| <pre class="methodSignature">public static <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a> of​(java.lang.Object... os)</pre> |
| <div class="block">Returns a context that wraps an array of objects, ignoring any nulls.</div> |
| </li> |
| </ul> |
| <a id="chain(org.apache.calcite.plan.Context...)"> |
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| </a> |
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| <h4>chain</h4> |
| <pre class="methodSignature">public static <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a> chain​(<a href="Context.html" title="interface in org.apache.calcite.plan">Context</a>... contexts)</pre> |
| <div class="block">Returns a context that wraps a list of contexts. |
| |
| <p>A call to <code>unwrap(C)</code> will return the first object that is an |
| instance of <code>C</code>. |
| |
| <p>If any of the contexts is a <a href="Context.html" title="interface in org.apache.calcite.plan"><code>Context</code></a>, recursively looks in that |
| object. Thus this method can be used to chain contexts.</div> |
| </li> |
| </ul> |
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| <h4>chain</h4> |
| <pre class="methodSignature">private static <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a> chain​(java.lang.Iterable<? extends <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a>> contexts)</pre> |
| </li> |
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| <a id="build(java.util.List,org.apache.calcite.plan.Context)"> |
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| <h4>build</h4> |
| <pre class="methodSignature">private static void build​(java.util.List<<a href="Context.html" title="interface in org.apache.calcite.plan">Context</a>> list, |
| <a href="Context.html" title="interface in org.apache.calcite.plan">Context</a> context)</pre> |
| <div class="block">Recursively populates a list of contexts.</div> |
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