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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.iceberg.expressions</a></div>
<h2 title="Class ExpressionUtil" class="title">Class ExpressionUtil</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<li>org.apache.iceberg.expressions.ExpressionUtil</li>
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<pre>public class <span class="typeNameLabel">ExpressionUtil</span>
extends java.lang.Object</pre>
<div class="block">Expression utility methods.</div>
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<h3>Method Summary</h3>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</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>static java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#describe(org.apache.iceberg.expressions.Term)">describe</a></span>&#8203;(<a href="Term.html" title="interface in org.apache.iceberg.expressions">Term</a>&nbsp;term)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#equivalent(org.apache.iceberg.expressions.Expression,org.apache.iceberg.expressions.Expression,org.apache.iceberg.types.Types.StructType,boolean)">equivalent</a></span>&#8203;(<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;left,
<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;right,
<a href="../types/Types.StructType.html" title="class in org.apache.iceberg.types">Types.StructType</a>&nbsp;struct,
boolean&nbsp;caseSensitive)</code></th>
<td class="colLast">
<div class="block">Returns whether two unbound expressions will accept the same inputs.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>static <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="#extractByIdInclusive(org.apache.iceberg.expressions.Expression,org.apache.iceberg.Schema,boolean,int...)">extractByIdInclusive</a></span>&#8203;(<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;expression,
<a href="../Schema.html" title="class in org.apache.iceberg">Schema</a>&nbsp;schema,
boolean&nbsp;caseSensitive,
int...&nbsp;ids)</code></th>
<td class="colLast">
<div class="block">Extracts an expression that references only the given column IDs from the given expression.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>static <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="#sanitize(org.apache.iceberg.expressions.Expression)">sanitize</a></span>&#8203;(<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;expr)</code></th>
<td class="colLast">
<div class="block">Produces an unbound <a href="Expression.html" title="interface in org.apache.iceberg.expressions"><code>Expression</code></a> with the same structure, but with data values replaced
by descriptions.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static <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="#sanitize(org.apache.iceberg.types.Types.StructType,org.apache.iceberg.expressions.Expression,boolean)">sanitize</a></span>&#8203;(<a href="../types/Types.StructType.html" title="class in org.apache.iceberg.types">Types.StructType</a>&nbsp;struct,
<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;expr,
boolean&nbsp;caseSensitive)</code></th>
<td class="colLast">
<div class="block">Produces an unbound <a href="Expression.html" title="interface in org.apache.iceberg.expressions"><code>Expression</code></a> with the same structure, but with data values replaced
by descriptions.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#selectsPartitions(org.apache.iceberg.expressions.Expression,org.apache.iceberg.PartitionSpec,boolean)">selectsPartitions</a></span>&#8203;(<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;expr,
<a href="../PartitionSpec.html" title="class in org.apache.iceberg">PartitionSpec</a>&nbsp;spec,
boolean&nbsp;caseSensitive)</code></th>
<td class="colLast">
<div class="block">Returns whether an expression selects whole partitions for a partition spec.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#selectsPartitions(org.apache.iceberg.expressions.Expression,org.apache.iceberg.Table,boolean)">selectsPartitions</a></span>&#8203;(<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;expr,
<a href="../Table.html" title="interface in org.apache.iceberg">Table</a>&nbsp;table,
boolean&nbsp;caseSensitive)</code></th>
<td class="colLast">
<div class="block">Returns whether an expression selects whole partitions for all partition specs in a table.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toSanitizedString(org.apache.iceberg.expressions.Expression)">toSanitizedString</a></span>&#8203;(<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;expr)</code></th>
<td class="colLast">
<div class="block">Produces a sanitized expression string with the same structure, but with data values replaced
by descriptions.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toSanitizedString(org.apache.iceberg.types.Types.StructType,org.apache.iceberg.expressions.Expression,boolean)">toSanitizedString</a></span>&#8203;(<a href="../types/Types.StructType.html" title="class in org.apache.iceberg.types">Types.StructType</a>&nbsp;struct,
<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;expr,
boolean&nbsp;caseSensitive)</code></th>
<td class="colLast">
<div class="block">Produces a sanitized expression string with the same structure, but with data values replaced
by descriptions.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>static &lt;T&gt;&nbsp;<a href="UnboundTerm.html" title="interface in org.apache.iceberg.expressions">UnboundTerm</a>&lt;T&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#unbind(org.apache.iceberg.expressions.BoundTerm)">unbind</a></span>&#8203;(<a href="BoundTerm.html" title="interface in org.apache.iceberg.expressions">BoundTerm</a>&lt;T&gt;&nbsp;term)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>static &lt;T&gt;&nbsp;<a href="UnboundTerm.html" title="interface in org.apache.iceberg.expressions">UnboundTerm</a>&lt;T&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#unbind(org.apache.iceberg.expressions.Term)">unbind</a></span>&#8203;(<a href="Term.html" title="interface in org.apache.iceberg.expressions">Term</a>&nbsp;term)</code></th>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h3>Method Detail</h3>
<a id="sanitize(org.apache.iceberg.expressions.Expression)">
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<h4>sanitize</h4>
<pre class="methodSignature">public static&nbsp;<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;sanitize&#8203;(<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;expr)</pre>
<div class="block">Produces an unbound <a href="Expression.html" title="interface in org.apache.iceberg.expressions"><code>Expression</code></a> with the same structure, but with data values replaced
by descriptions.
<p>Numbers are replaced with magnitude and type, string-like values are replaced by hashes, and
date/time values are replaced by the type.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>expr</code> - an Expression to sanitize</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a sanitized Expression</dd>
</dl>
</li>
</ul>
<a id="sanitize(org.apache.iceberg.types.Types.StructType,org.apache.iceberg.expressions.Expression,boolean)">
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<h4>sanitize</h4>
<pre class="methodSignature">public static&nbsp;<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;sanitize&#8203;(<a href="../types/Types.StructType.html" title="class in org.apache.iceberg.types">Types.StructType</a>&nbsp;struct,
<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;expr,
boolean&nbsp;caseSensitive)</pre>
<div class="block">Produces an unbound <a href="Expression.html" title="interface in org.apache.iceberg.expressions"><code>Expression</code></a> with the same structure, but with data values replaced
by descriptions.
<p>Numbers are replaced with magnitude and type, string-like values are replaced by hashes, and
date/time values are replaced by the type.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>struct</code> - a StructType to bind the expression</dd>
<dd><code>expr</code> - an Expression to sanitize</dd>
<dd><code>caseSensitive</code> - whether to bind case sensitively</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a sanitized Expression</dd>
</dl>
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</ul>
<a id="toSanitizedString(org.apache.iceberg.expressions.Expression)">
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<h4>toSanitizedString</h4>
<pre class="methodSignature">public static&nbsp;java.lang.String&nbsp;toSanitizedString&#8203;(<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;expr)</pre>
<div class="block">Produces a sanitized expression string with the same structure, but with data values replaced
by descriptions.
<p>Numbers are replaced with magnitude and type, string-like values are replaced by hashes, and
date/time values are replaced by the type.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>expr</code> - an Expression to sanitize</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a sanitized expression string</dd>
</dl>
</li>
</ul>
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<h4>toSanitizedString</h4>
<pre class="methodSignature">public static&nbsp;java.lang.String&nbsp;toSanitizedString&#8203;(<a href="../types/Types.StructType.html" title="class in org.apache.iceberg.types">Types.StructType</a>&nbsp;struct,
<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;expr,
boolean&nbsp;caseSensitive)</pre>
<div class="block">Produces a sanitized expression string with the same structure, but with data values replaced
by descriptions.
<p>Numbers are replaced with magnitude and type, string-like values are replaced by hashes, and
date/time values are replaced by the type.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>struct</code> - a StructType to bind the expression</dd>
<dd><code>expr</code> - an Expression to sanitize</dd>
<dd><code>caseSensitive</code> - whether to bind case sensitively</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a sanitized expression string</dd>
</dl>
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</ul>
<a id="extractByIdInclusive(org.apache.iceberg.expressions.Expression,org.apache.iceberg.Schema,boolean,int...)">
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<h4>extractByIdInclusive</h4>
<pre class="methodSignature">public static&nbsp;<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;extractByIdInclusive&#8203;(<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;expression,
<a href="../Schema.html" title="class in org.apache.iceberg">Schema</a>&nbsp;schema,
boolean&nbsp;caseSensitive,
int...&nbsp;ids)</pre>
<div class="block">Extracts an expression that references only the given column IDs from the given expression.
<p>The result is inclusive. If a row would match the original filter, it must match the result
filter.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>expression</code> - a filter Expression</dd>
<dd><code>schema</code> - a Schema</dd>
<dd><code>caseSensitive</code> - whether binding is case sensitive</dd>
<dd><code>ids</code> - field IDs used to match predicates to extract from the expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an Expression that selects at least the same rows as the original using only the IDs</dd>
</dl>
</li>
</ul>
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<h4>equivalent</h4>
<pre class="methodSignature">public static&nbsp;boolean&nbsp;equivalent&#8203;(<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;left,
<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;right,
<a href="../types/Types.StructType.html" title="class in org.apache.iceberg.types">Types.StructType</a>&nbsp;struct,
boolean&nbsp;caseSensitive)</pre>
<div class="block">Returns whether two unbound expressions will accept the same inputs.
<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.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>left</code> - an unbound expression</dd>
<dd><code>right</code> - an unbound expression</dd>
<dd><code>struct</code> - a struct type for binding</dd>
<dd><code>caseSensitive</code> - whether to bind expressions using case-sensitive matching</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the expressions are equivalent</dd>
</dl>
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<h4>selectsPartitions</h4>
<pre class="methodSignature">public static&nbsp;boolean&nbsp;selectsPartitions&#8203;(<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;expr,
<a href="../Table.html" title="interface in org.apache.iceberg">Table</a>&nbsp;table,
boolean&nbsp;caseSensitive)</pre>
<div class="block">Returns whether an expression selects whole partitions for all partition specs in a table.
<p>For example, ts &lt; '2021-03-09T10:00:00.000' selects whole partitions in an hourly spec,
[hours(ts)], but does not select whole partitions in a daily spec, [days(ts)].</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>expr</code> - an unbound expression</dd>
<dd><code>table</code> - a table</dd>
<dd><code>caseSensitive</code> - whether expression binding should be case sensitive</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the expression will select whole partitions in all table specs</dd>
</dl>
</li>
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<h4>selectsPartitions</h4>
<pre class="methodSignature">public static&nbsp;boolean&nbsp;selectsPartitions&#8203;(<a href="Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a>&nbsp;expr,
<a href="../PartitionSpec.html" title="class in org.apache.iceberg">PartitionSpec</a>&nbsp;spec,
boolean&nbsp;caseSensitive)</pre>
<div class="block">Returns whether an expression selects whole partitions for a partition spec.
<p>For example, ts &lt; '2021-03-09T10:00:00.000' selects whole partitions in an hourly spec,
[hours(ts)], but does not select whole partitions in a daily spec, [days(ts)].</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>expr</code> - an unbound expression</dd>
<dd><code>spec</code> - a partition spec</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the expression will select whole partitions in the given spec</dd>
</dl>
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<h4>describe</h4>
<pre class="methodSignature">public static&nbsp;java.lang.String&nbsp;describe&#8203;(<a href="Term.html" title="interface in org.apache.iceberg.expressions">Term</a>&nbsp;term)</pre>
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<h4>unbind</h4>
<pre class="methodSignature">public static&nbsp;&lt;T&gt;&nbsp;<a href="UnboundTerm.html" title="interface in org.apache.iceberg.expressions">UnboundTerm</a>&lt;T&gt;&nbsp;unbind&#8203;(<a href="BoundTerm.html" title="interface in org.apache.iceberg.expressions">BoundTerm</a>&lt;T&gt;&nbsp;term)</pre>
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<h4>unbind</h4>
<pre class="methodSignature">public static&nbsp;&lt;T&gt;&nbsp;<a href="UnboundTerm.html" title="interface in org.apache.iceberg.expressions">UnboundTerm</a>&lt;T&gt;&nbsp;unbind&#8203;(<a href="Term.html" title="interface in org.apache.iceberg.expressions">Term</a>&nbsp;term)</pre>
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