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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.iceberg.expressions</a></div> |
| <h2 title="Interface Expression" class="title">Interface Expression</h2> |
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| <dt>All Superinterfaces:</dt> |
| <dd><code>java.io.Serializable</code></dd> |
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| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="Aggregate.html" title="class in org.apache.iceberg.expressions">Aggregate</a></code>, <code><a href="And.html" title="class in org.apache.iceberg.expressions">And</a></code>, <code><a href="BoundAggregate.html" title="class in org.apache.iceberg.expressions">BoundAggregate</a></code>, <code><a href="BoundLiteralPredicate.html" title="class in org.apache.iceberg.expressions">BoundLiteralPredicate</a></code>, <code><a href="BoundPredicate.html" title="class in org.apache.iceberg.expressions">BoundPredicate</a></code>, <code><a href="BoundSetPredicate.html" title="class in org.apache.iceberg.expressions">BoundSetPredicate</a></code>, <code><a href="BoundUnaryPredicate.html" title="class in org.apache.iceberg.expressions">BoundUnaryPredicate</a></code>, <code><a href="CountAggregate.html" title="class in org.apache.iceberg.expressions">CountAggregate</a></code>, <code><a href="CountNonNull.html" title="class in org.apache.iceberg.expressions">CountNonNull</a></code>, <code><a href="CountStar.html" title="class in org.apache.iceberg.expressions">CountStar</a></code>, <code><a href="False.html" title="class in org.apache.iceberg.expressions">False</a></code>, <code><a href="MaxAggregate.html" title="class in org.apache.iceberg.expressions">MaxAggregate</a></code>, <code><a href="MinAggregate.html" title="class in org.apache.iceberg.expressions">MinAggregate</a></code>, <code><a href="Not.html" title="class in org.apache.iceberg.expressions">Not</a></code>, <code><a href="Or.html" title="class in org.apache.iceberg.expressions">Or</a></code>, <code><a href="Predicate.html" title="class in org.apache.iceberg.expressions">Predicate</a></code>, <code><a href="True.html" title="class in org.apache.iceberg.expressions">True</a></code>, <code><a href="UnboundAggregate.html" title="class in org.apache.iceberg.expressions">UnboundAggregate</a></code>, <code><a href="UnboundPredicate.html" title="class in org.apache.iceberg.expressions">UnboundPredicate</a></code></dd> |
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| <pre>public interface <span class="typeNameLabel">Expression</span> |
| extends java.io.Serializable</pre> |
| <div class="block">Represents a boolean expression tree.</div> |
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| <td class="colFirst"><code>static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="Expression.Operation.html" title="enum in org.apache.iceberg.expressions">Expression.Operation</a></span></code></th> |
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| <td class="colFirst"><code>default boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isEquivalentTo(org.apache.iceberg.expressions.Expression)">isEquivalentTo</a></span>​(<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a> other)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether this expression will accept the same values as another.</div> |
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| <td class="colFirst"><code>default <a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#negate()">negate</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the negation of this expression, equivalent to not(this).</div> |
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| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="Expression.Operation.html" title="enum in org.apache.iceberg.expressions">Expression.Operation</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#op()">op</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the operation for an expression node.</div> |
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| <h4>op</h4> |
| <pre class="methodSignature"><a href="Expression.Operation.html" title="enum in org.apache.iceberg.expressions">Expression.Operation</a> op()</pre> |
| <div class="block">Returns the operation for an expression node.</div> |
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| <h4>negate</h4> |
| <pre class="methodSignature">default <a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a> negate()</pre> |
| <div class="block">Returns the negation of this expression, equivalent to not(this).</div> |
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| <h4>isEquivalentTo</h4> |
| <pre class="methodSignature">default boolean isEquivalentTo​(<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a> other)</pre> |
| <div class="block">Returns whether this expression will accept the same values as another. |
| |
| <p>If this returns true, the expressions are guaranteed to return the same evaluation for the |
| same input. However, if this returns false the expressions may return the same evaluation for |
| the same input. That is, expressions may be equivalent even if this returns false. |
| |
| <p>For best results, rewrite not and bind expressions before calling this method.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>other</code> - another expression</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the expressions are equivalent</dd> |
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