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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.iceberg</a></div>
<h2 title="Class MetricsUtil" class="title">Class MetricsUtil</h2>
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<li>java.lang.Object</li>
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<li>org.apache.iceberg.MetricsUtil</li>
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<pre>public class <span class="typeNameLabel">MetricsUtil</span>
extends java.lang.Object</pre>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Class</th>
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<td class="colFirst"><code>static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="MetricsUtil.ReadableColMetricsStruct.html" title="class in org.apache.iceberg">MetricsUtil.ReadableColMetricsStruct</a></span></code></th>
<td class="colLast">
<div class="block">A struct of readable metric values for a primitive column</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="MetricsUtil.ReadableMetricColDefinition.html" title="class in org.apache.iceberg">MetricsUtil.ReadableMetricColDefinition</a></span></code></th>
<td class="colLast">
<div class="block">Fixed definition of a readable metric column, ie a mapping of a raw metric to a readable metric</div>
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<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="MetricsUtil.ReadableMetricsStruct.html" title="class in org.apache.iceberg">MetricsUtil.ReadableMetricsStruct</a></span></code></th>
<td class="colLast">
<div class="block">A struct, consisting of all <a href="MetricsUtil.ReadableColMetricsStruct.html" title="class in org.apache.iceberg"><code>MetricsUtil.ReadableColMetricsStruct</code></a> for all primitive columns of the
table</div>
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<td class="colFirst"><code>static java.util.List&lt;<a href="MetricsUtil.ReadableMetricColDefinition.html" title="class in org.apache.iceberg">MetricsUtil.ReadableMetricColDefinition</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#READABLE_METRIC_COLS">READABLE_METRIC_COLS</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#READABLE_METRICS">READABLE_METRICS</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>static <a href="Metrics.html" title="class in org.apache.iceberg">Metrics</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#copyWithoutFieldCounts(org.apache.iceberg.Metrics,java.util.Set)">copyWithoutFieldCounts</a></span>&#8203;(<a href="Metrics.html" title="class in org.apache.iceberg">Metrics</a>&nbsp;metrics,
java.util.Set&lt;java.lang.Integer&gt;&nbsp;excludedFieldIds)</code></th>
<td class="colLast">
<div class="block">Copies a metrics object without value, NULL and NaN counts for given fields.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static <a href="Metrics.html" title="class in org.apache.iceberg">Metrics</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#copyWithoutFieldCountsAndBounds(org.apache.iceberg.Metrics,java.util.Set)">copyWithoutFieldCountsAndBounds</a></span>&#8203;(<a href="Metrics.html" title="class in org.apache.iceberg">Metrics</a>&nbsp;metrics,
java.util.Set&lt;java.lang.Integer&gt;&nbsp;excludedFieldIds)</code></th>
<td class="colLast">
<div class="block">Copies a metrics object without counts and bounds for given fields.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>static java.util.Map&lt;java.lang.Integer,&#8203;java.lang.Long&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createNanValueCounts(java.util.stream.Stream,org.apache.iceberg.MetricsConfig,org.apache.iceberg.Schema)">createNanValueCounts</a></span>&#8203;(java.util.stream.Stream&lt;<a href="FieldMetrics.html" title="class in org.apache.iceberg">FieldMetrics</a>&lt;?&gt;&gt;&nbsp;fieldMetrics,
<a href="MetricsConfig.html" title="class in org.apache.iceberg">MetricsConfig</a>&nbsp;metricsConfig,
<a href="Schema.html" title="class in org.apache.iceberg">Schema</a>&nbsp;inputSchema)</code></th>
<td class="colLast">
<div class="block">Construct mapping relationship between column id to NaN value counts from input metrics and
metrics config.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>static <a href="MetricsModes.MetricsMode.html" title="interface in org.apache.iceberg">MetricsModes.MetricsMode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#metricsMode(org.apache.iceberg.Schema,org.apache.iceberg.MetricsConfig,int)">metricsMode</a></span>&#8203;(<a href="Schema.html" title="class in org.apache.iceberg">Schema</a>&nbsp;inputSchema,
<a href="MetricsConfig.html" title="class in org.apache.iceberg">MetricsConfig</a>&nbsp;metricsConfig,
int&nbsp;fieldId)</code></th>
<td class="colLast">
<div class="block">Extract MetricsMode for the given field id from metrics config.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static <a href="Schema.html" title="class in org.apache.iceberg">Schema</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readableMetricsSchema(org.apache.iceberg.Schema,org.apache.iceberg.Schema)">readableMetricsSchema</a></span>&#8203;(<a href="Schema.html" title="class in org.apache.iceberg">Schema</a>&nbsp;dataTableSchema,
<a href="Schema.html" title="class in org.apache.iceberg">Schema</a>&nbsp;metadataTableSchema)</code></th>
<td class="colLast">
<div class="block">Calculates a dynamic schema for readable_metrics to add to metadata tables.</div>
</td>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>static <a href="MetricsUtil.ReadableMetricsStruct.html" title="class in org.apache.iceberg">MetricsUtil.ReadableMetricsStruct</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readableMetricsStruct(org.apache.iceberg.Schema,org.apache.iceberg.ContentFile,org.apache.iceberg.types.Types.StructType)">readableMetricsStruct</a></span>&#8203;(<a href="Schema.html" title="class in org.apache.iceberg">Schema</a>&nbsp;schema,
<a href="ContentFile.html" title="interface in org.apache.iceberg">ContentFile</a>&lt;?&gt;&nbsp;file,
<a href="types/Types.StructType.html" title="class in org.apache.iceberg.types">Types.StructType</a>&nbsp;projectedSchema)</code></th>
<td class="colLast">
<div class="block">Return a readable metrics struct row from file metadata</div>
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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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<h4>READABLE_METRIC_COLS</h4>
<pre>public static final&nbsp;java.util.List&lt;<a href="MetricsUtil.ReadableMetricColDefinition.html" title="class in org.apache.iceberg">MetricsUtil.ReadableMetricColDefinition</a>&gt; READABLE_METRIC_COLS</pre>
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<h4>READABLE_METRICS</h4>
<pre>public static final&nbsp;java.lang.String READABLE_METRICS</pre>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#org.apache.iceberg.MetricsUtil.READABLE_METRICS">Constant Field Values</a></dd>
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<h4>copyWithoutFieldCounts</h4>
<pre class="methodSignature">public static&nbsp;<a href="Metrics.html" title="class in org.apache.iceberg">Metrics</a>&nbsp;copyWithoutFieldCounts&#8203;(<a href="Metrics.html" title="class in org.apache.iceberg">Metrics</a>&nbsp;metrics,
java.util.Set&lt;java.lang.Integer&gt;&nbsp;excludedFieldIds)</pre>
<div class="block">Copies a metrics object without value, NULL and NaN counts for given fields.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>excludedFieldIds</code> - field IDs for which the counts must be dropped</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a new metrics object without counts for given fields</dd>
</dl>
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<h4>copyWithoutFieldCountsAndBounds</h4>
<pre class="methodSignature">public static&nbsp;<a href="Metrics.html" title="class in org.apache.iceberg">Metrics</a>&nbsp;copyWithoutFieldCountsAndBounds&#8203;(<a href="Metrics.html" title="class in org.apache.iceberg">Metrics</a>&nbsp;metrics,
java.util.Set&lt;java.lang.Integer&gt;&nbsp;excludedFieldIds)</pre>
<div class="block">Copies a metrics object without counts and bounds for given fields.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>excludedFieldIds</code> - field IDs for which the counts and bounds must be dropped</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a new metrics object without lower and upper bounds for given fields</dd>
</dl>
</li>
</ul>
<a id="createNanValueCounts(java.util.stream.Stream,org.apache.iceberg.MetricsConfig,org.apache.iceberg.Schema)">
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<h4>createNanValueCounts</h4>
<pre class="methodSignature">public static&nbsp;java.util.Map&lt;java.lang.Integer,&#8203;java.lang.Long&gt;&nbsp;createNanValueCounts&#8203;(java.util.stream.Stream&lt;<a href="FieldMetrics.html" title="class in org.apache.iceberg">FieldMetrics</a>&lt;?&gt;&gt;&nbsp;fieldMetrics,
<a href="MetricsConfig.html" title="class in org.apache.iceberg">MetricsConfig</a>&nbsp;metricsConfig,
<a href="Schema.html" title="class in org.apache.iceberg">Schema</a>&nbsp;inputSchema)</pre>
<div class="block">Construct mapping relationship between column id to NaN value counts from input metrics and
metrics config.</div>
</li>
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<a id="metricsMode(org.apache.iceberg.Schema,org.apache.iceberg.MetricsConfig,int)">
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<h4>metricsMode</h4>
<pre class="methodSignature">public static&nbsp;<a href="MetricsModes.MetricsMode.html" title="interface in org.apache.iceberg">MetricsModes.MetricsMode</a>&nbsp;metricsMode&#8203;(<a href="Schema.html" title="class in org.apache.iceberg">Schema</a>&nbsp;inputSchema,
<a href="MetricsConfig.html" title="class in org.apache.iceberg">MetricsConfig</a>&nbsp;metricsConfig,
int&nbsp;fieldId)</pre>
<div class="block">Extract MetricsMode for the given field id from metrics config.</div>
</li>
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<a id="readableMetricsSchema(org.apache.iceberg.Schema,org.apache.iceberg.Schema)">
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<h4>readableMetricsSchema</h4>
<pre class="methodSignature">public static&nbsp;<a href="Schema.html" title="class in org.apache.iceberg">Schema</a>&nbsp;readableMetricsSchema&#8203;(<a href="Schema.html" title="class in org.apache.iceberg">Schema</a>&nbsp;dataTableSchema,
<a href="Schema.html" title="class in org.apache.iceberg">Schema</a>&nbsp;metadataTableSchema)</pre>
<div class="block">Calculates a dynamic schema for readable_metrics to add to metadata tables. The type will be
the struct <a href="MetricsUtil.ReadableColMetricsStruct.html" title="class in org.apache.iceberg"><code>MetricsUtil.ReadableColMetricsStruct</code></a>, composed of <a href="MetricsUtil.ReadableMetricsStruct.html" title="class in org.apache.iceberg"><code>MetricsUtil.ReadableMetricsStruct</code></a> for all
primitive columns in the data table</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>dataTableSchema</code> - schema of data table</dd>
<dd><code>metadataTableSchema</code> - schema of existing metadata table (to ensure id uniqueness)</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>schema of readable_metrics struct</dd>
</dl>
</li>
</ul>
<a id="readableMetricsStruct(org.apache.iceberg.Schema,org.apache.iceberg.ContentFile,org.apache.iceberg.types.Types.StructType)">
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<h4>readableMetricsStruct</h4>
<pre class="methodSignature">public static&nbsp;<a href="MetricsUtil.ReadableMetricsStruct.html" title="class in org.apache.iceberg">MetricsUtil.ReadableMetricsStruct</a>&nbsp;readableMetricsStruct&#8203;(<a href="Schema.html" title="class in org.apache.iceberg">Schema</a>&nbsp;schema,
<a href="ContentFile.html" title="interface in org.apache.iceberg">ContentFile</a>&lt;?&gt;&nbsp;file,
<a href="types/Types.StructType.html" title="class in org.apache.iceberg.types">Types.StructType</a>&nbsp;projectedSchema)</pre>
<div class="block">Return a readable metrics struct row from file metadata</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>schema</code> - schema of original data table</dd>
<dd><code>file</code> - content file with metrics</dd>
<dd><code>projectedSchema</code> - user requested projection</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><a href="MetricsUtil.ReadableMetricsStruct.html" title="class in org.apache.iceberg"><code>MetricsUtil.ReadableMetricsStruct</code></a></dd>
</dl>
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