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| <li>Summary: </li> |
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| <h2 title="Class Convention.Impl" class="title">Class Convention.Impl</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
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| <ul class="inheritance"> |
| <li>org.apache.calcite.plan.Convention.Impl</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="Convention.html" title="interface in org.apache.calcite.plan">Convention</a></code>, <code><a href="RelTrait.html" title="interface in org.apache.calcite.plan">RelTrait</a></code></dd> |
| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><code><a href="../adapter/jdbc/JdbcConvention.html" title="class in org.apache.calcite.adapter.jdbc">JdbcConvention</a></code></dd> |
| </dl> |
| <dl> |
| <dt>Enclosing interface:</dt> |
| <dd><a href="Convention.html" title="interface in org.apache.calcite.plan">Convention</a></dd> |
| </dl> |
| <hr> |
| <pre>public static class <span class="typeNameLabel">Convention.Impl</span> |
| extends java.lang.Object |
| implements <a href="Convention.html" title="interface in org.apache.calcite.plan">Convention</a></pre> |
| <div class="block">Default implementation.</div> |
| </li> |
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| </a> |
| <h3>Nested classes/interfaces inherited from interface org.apache.calcite.plan.<a href="Convention.html" title="interface in org.apache.calcite.plan">Convention</a></h3> |
| <code><a href="Convention.Impl.html" title="class in org.apache.calcite.plan">Convention.Impl</a></code></li> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Field</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private java.lang.String</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#name">name</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private java.lang.Class<? extends <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#relClass">relClass</a></span></code></th> |
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| <h3>Fields inherited from interface org.apache.calcite.plan.<a href="Convention.html" title="interface in org.apache.calcite.plan">Convention</a></h3> |
| <code><a href="Convention.html#NONE">NONE</a></code></li> |
| </ul> |
| </li> |
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| <tr> |
| <th class="colFirst" scope="col">Constructor</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(java.lang.String,java.lang.Class)">Impl</a></span>​(java.lang.String name, |
| java.lang.Class<? extends <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>> relClass)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#canConvertConvention(org.apache.calcite.plan.Convention)">canConvertConvention</a></span>​(<a href="Convention.html" title="interface in org.apache.calcite.plan">Convention</a> toConvention)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether we should convert from this convention to |
| <code>toConvention</code>.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>java.lang.Class</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getInterface()">getInterface</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>java.lang.String</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getName()">getName</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="RelTraitDef.html" title="class in org.apache.calcite.plan">RelTraitDef</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTraitDef()">getTraitDef</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the RelTraitDef that defines this RelTrait.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#register(org.apache.calcite.plan.RelOptPlanner)">register</a></span>​(<a href="RelOptPlanner.html" title="interface in org.apache.calcite.plan">RelOptPlanner</a> planner)</code></th> |
| <td class="colLast"> |
| <div class="block">Registers a trait instance with the planner.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#satisfies(org.apache.calcite.plan.RelTrait)">satisfies</a></span>​(<a href="RelTrait.html" title="interface in org.apache.calcite.plan">RelTrait</a> trait)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether this trait satisfies a given trait.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>java.lang.String</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString()">toString</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a succinct name for this trait.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#useAbstractConvertersForConversion(org.apache.calcite.plan.RelTraitSet,org.apache.calcite.plan.RelTraitSet)">useAbstractConvertersForConversion</a></span>​(<a href="RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a> fromTraits, |
| <a href="RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a> toTraits)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether we should convert from this trait set to the other trait |
| set.</div> |
| </td> |
| </tr> |
| </table> |
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| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li> |
| </ul> |
| <ul class="blockList"> |
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| </a> |
| <h3>Methods inherited from interface org.apache.calcite.plan.<a href="RelTrait.html" title="interface in org.apache.calcite.plan">RelTrait</a></h3> |
| <code><a href="RelTrait.html#equals(java.lang.Object)">equals</a>, <a href="RelTrait.html#hashCode()">hashCode</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
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| </div> |
| <div class="details"> |
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| <!-- ============ FIELD DETAIL =========== --> |
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| <h3>Field Detail</h3> |
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| <h4>name</h4> |
| <pre>private final java.lang.String name</pre> |
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| <a id="relClass"> |
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| </a> |
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| <h4>relClass</h4> |
| <pre>private final java.lang.Class<? extends <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>> relClass</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| <h3>Constructor Detail</h3> |
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| <h4>Impl</h4> |
| <pre>public Impl​(java.lang.String name, |
| java.lang.Class<? extends <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>> relClass)</pre> |
| </li> |
| </ul> |
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| <h4>toString</h4> |
| <pre class="methodSignature">public java.lang.String toString()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="RelTrait.html#toString()">RelTrait</a></code></span></div> |
| <div class="block">Returns a succinct name for this trait. The planner may use this String |
| to describe the trait.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="RelTrait.html#toString()">toString</a></code> in interface <code><a href="RelTrait.html" title="interface in org.apache.calcite.plan">RelTrait</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>toString</code> in class <code>java.lang.Object</code></dd> |
| </dl> |
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| <h4>register</h4> |
| <pre class="methodSignature">public void register​(<a href="RelOptPlanner.html" title="interface in org.apache.calcite.plan">RelOptPlanner</a> planner)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="RelTrait.html#register(org.apache.calcite.plan.RelOptPlanner)">RelTrait</a></code></span></div> |
| <div class="block">Registers a trait instance with the planner. |
| |
| <p>This is an opportunity to add rules that relate to that trait. However, |
| typical implementations will do nothing.</p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="RelTrait.html#register(org.apache.calcite.plan.RelOptPlanner)">register</a></code> in interface <code><a href="RelTrait.html" title="interface in org.apache.calcite.plan">RelTrait</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>planner</code> - Planner</dd> |
| </dl> |
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| <h4>satisfies</h4> |
| <pre class="methodSignature">public boolean satisfies​(<a href="RelTrait.html" title="interface in org.apache.calcite.plan">RelTrait</a> trait)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="RelTrait.html#satisfies(org.apache.calcite.plan.RelTrait)">RelTrait</a></code></span></div> |
| <div class="block">Returns whether this trait satisfies a given trait. |
| |
| <p>A trait satisfies another if it is the same or stricter. For example, |
| <code>ORDER BY x, y</code> satisfies <code>ORDER BY x</code>. |
| |
| <p>A trait's <code>satisfies</code> relation must be a partial order (reflexive, |
| anti-symmetric, transitive). Many traits cannot be "loosened"; their |
| <code>satisfies</code> is an equivalence relation, where only X satisfies X. |
| |
| <p>If a trait has multiple values |
| (see <a href="RelCompositeTrait.html" title="class in org.apache.calcite.plan"><code>RelCompositeTrait</code></a>) |
| a collection (T0, T1, ...) satisfies T if any Ti satisfies T.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="RelTrait.html#satisfies(org.apache.calcite.plan.RelTrait)">satisfies</a></code> in interface <code><a href="RelTrait.html" title="interface in org.apache.calcite.plan">RelTrait</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>trait</code> - Given trait</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Whether this trait subsumes a given trait</dd> |
| </dl> |
| </li> |
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| <h4>getInterface</h4> |
| <pre class="methodSignature">public java.lang.Class getInterface()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Convention.html#getInterface()">getInterface</a></code> in interface <code><a href="Convention.html" title="interface in org.apache.calcite.plan">Convention</a></code></dd> |
| </dl> |
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| <h4>getName</h4> |
| <pre class="methodSignature">public java.lang.String getName()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Convention.html#getName()">getName</a></code> in interface <code><a href="Convention.html" title="interface in org.apache.calcite.plan">Convention</a></code></dd> |
| </dl> |
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| <h4>getTraitDef</h4> |
| <pre class="methodSignature">public <a href="RelTraitDef.html" title="class in org.apache.calcite.plan">RelTraitDef</a> getTraitDef()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="RelTrait.html#getTraitDef()">RelTrait</a></code></span></div> |
| <div class="block">Returns the RelTraitDef that defines this RelTrait.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="RelTrait.html#getTraitDef()">getTraitDef</a></code> in interface <code><a href="RelTrait.html" title="interface in org.apache.calcite.plan">RelTrait</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the RelTraitDef that defines this RelTrait</dd> |
| </dl> |
| </li> |
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| <h4>canConvertConvention</h4> |
| <pre class="methodSignature">public boolean canConvertConvention​(<a href="Convention.html" title="interface in org.apache.calcite.plan">Convention</a> toConvention)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Convention.html#canConvertConvention(org.apache.calcite.plan.Convention)">Convention</a></code></span></div> |
| <div class="block">Returns whether we should convert from this convention to |
| <code>toConvention</code>. Used by <a href="ConventionTraitDef.html" title="class in org.apache.calcite.plan"><code>ConventionTraitDef</code></a>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Convention.html#canConvertConvention(org.apache.calcite.plan.Convention)">canConvertConvention</a></code> in interface <code><a href="Convention.html" title="interface in org.apache.calcite.plan">Convention</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>toConvention</code> - Desired convention to convert to</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Whether we should convert from this convention to toConvention</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="useAbstractConvertersForConversion(org.apache.calcite.plan.RelTraitSet,org.apache.calcite.plan.RelTraitSet)"> |
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| <h4>useAbstractConvertersForConversion</h4> |
| <pre class="methodSignature">public boolean useAbstractConvertersForConversion​(<a href="RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a> fromTraits, |
| <a href="RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a> toTraits)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Convention.html#useAbstractConvertersForConversion(org.apache.calcite.plan.RelTraitSet,org.apache.calcite.plan.RelTraitSet)">Convention</a></code></span></div> |
| <div class="block">Returns whether we should convert from this trait set to the other trait |
| set. |
| |
| <p>The convention decides whether it wants to handle other trait |
| conversions, e.g. collation, distribution, etc. For a given convention, we |
| will only add abstract converters to handle the trait (convention, |
| collation, distribution, etc.) conversions if this function returns true.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Convention.html#useAbstractConvertersForConversion(org.apache.calcite.plan.RelTraitSet,org.apache.calcite.plan.RelTraitSet)">useAbstractConvertersForConversion</a></code> in interface <code><a href="Convention.html" title="interface in org.apache.calcite.plan">Convention</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>fromTraits</code> - Traits of the RelNode that we are converting from</dd> |
| <dd><code>toTraits</code> - Target traits</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Whether we should add converters</dd> |
| </dl> |
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