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<div class="subTitle">org.apache.drill.exec.record.metadata</div>
<h2 title="Class MapColumnMetadata" class="title">Class MapColumnMetadata</h2>
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<ul class="inheritance">
<li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
<li>
<ul class="inheritance">
<li><a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html" title="class in org.apache.drill.exec.record.metadata">org.apache.drill.exec.record.metadata.AbstractPropertied</a></li>
<li>
<ul class="inheritance">
<li><a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html" title="class in org.apache.drill.exec.record.metadata">org.apache.drill.exec.record.metadata.AbstractColumnMetadata</a></li>
<li>
<ul class="inheritance">
<li><a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html" title="class in org.apache.drill.exec.record.metadata">org.apache.drill.exec.record.metadata.AbstractMapColumnMetadata</a></li>
<li>
<ul class="inheritance">
<li>org.apache.drill.exec.record.metadata.MapColumnMetadata</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html" title="interface in org.apache.drill.exec.record.metadata">Propertied</a></dd>
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<pre>public class <span class="typeNameLabel">MapColumnMetadata</span>
extends <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html" title="class in org.apache.drill.exec.record.metadata">AbstractMapColumnMetadata</a></pre>
<div class="block">Describes a map and repeated map. Both are tuples that have a tuple
schema as part of the column definition.</div>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.apache.drill.exec.record.metadata.<a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a></h3>
<code><a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.StructureType.html" title="enum in org.apache.drill.exec.record.metadata">ColumnMetadata.StructureType</a></code></li>
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<h3>Fields inherited from class&nbsp;org.apache.drill.exec.record.metadata.<a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html" title="class in org.apache.drill.exec.record.metadata">AbstractMapColumnMetadata</a></h3>
<code><a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html#parentTuple">parentTuple</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html#schema">schema</a></code></li>
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<h3>Fields inherited from class&nbsp;org.apache.drill.exec.record.metadata.<a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html" title="class in org.apache.drill.exec.record.metadata">AbstractColumnMetadata</a></h3>
<code><a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#mode">mode</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#name">name</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#precision">precision</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#scale">scale</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#type">type</a></code></li>
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<h3>Fields inherited from interface&nbsp;org.apache.drill.exec.record.metadata.<a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a></h3>
<code><a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#BLANK_AS_NULL">BLANK_AS_NULL</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#BLANK_AS_PROP">BLANK_AS_PROP</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#BLANK_AS_ZERO">BLANK_AS_ZERO</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#DEFAULT_ARRAY_SIZE">DEFAULT_ARRAY_SIZE</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#DEFAULT_VALUE_PROP">DEFAULT_VALUE_PROP</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#EXCLUDE_FROM_WILDCARD">EXCLUDE_FROM_WILDCARD</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#EXPECTED_CARDINALITY_PROP">EXPECTED_CARDINALITY_PROP</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#EXPECTED_WIDTH_PROP">EXPECTED_WIDTH_PROP</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#FORMAT_PROP">FORMAT_PROP</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#IMPLICIT_COL_TYPE">IMPLICIT_COL_TYPE</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#IMPLICIT_FILENAME">IMPLICIT_FILENAME</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#IMPLICIT_FILEPATH">IMPLICIT_FILEPATH</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#IMPLICIT_FQN">IMPLICIT_FQN</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#IMPLICIT_PARTITION_PREFIX">IMPLICIT_PARTITION_PREFIX</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#IMPLICIT_SUFFIX">IMPLICIT_SUFFIX</a></code></li>
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<h3>Fields inherited from interface&nbsp;org.apache.drill.exec.record.metadata.<a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html" title="interface in org.apache.drill.exec.record.metadata">Propertied</a></h3>
<code><a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html#DRILL_PROP_PREFIX">DRILL_PROP_PREFIX</a></code></li>
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<th class="colOne" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/record/metadata/MapColumnMetadata.html#MapColumnMetadata-org.apache.drill.exec.record.metadata.MapColumnMetadata-">MapColumnMetadata</a></span>(<a href="../../../../../../org/apache/drill/exec/record/metadata/MapColumnMetadata.html" title="class in org.apache.drill.exec.record.metadata">MapColumnMetadata</a>&nbsp;from)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/record/metadata/MapColumnMetadata.html#MapColumnMetadata-org.apache.drill.exec.record.MaterializedField-">MapColumnMetadata</a></span>(<a href="../../../../../../org/apache/drill/exec/record/MaterializedField.html" title="class in org.apache.drill.exec.record">MaterializedField</a>&nbsp;schema)</code>
<div class="block">Build a new map column from the field provided</div>
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<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/record/metadata/MapColumnMetadata.html#MapColumnMetadata-java.lang.String-org.apache.drill.common.types.TypeProtos.DataMode-org.apache.drill.exec.record.metadata.TupleSchema-">MapColumnMetadata</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name,
<a href="../../../../../../org/apache/drill/common/types/TypeProtos.DataMode.html" title="enum in org.apache.drill.common.types">TypeProtos.DataMode</a>&nbsp;mode,
<a href="../../../../../../org/apache/drill/exec/record/metadata/TupleSchema.html" title="class in org.apache.drill.exec.record.metadata">TupleSchema</a>&nbsp;tupleSchema)</code>&nbsp;</td>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code><a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/record/metadata/MapColumnMetadata.html#cloneEmpty--">cloneEmpty</a></span>()</code>
<div class="block">Create an empty version of this column.</div>
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</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/record/metadata/MapColumnMetadata.html#copy--">copy</a></span>()</code>&nbsp;</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/record/metadata/MapColumnMetadata.html#internalTypeString--">internalTypeString</a></span>()</code>
<div class="block">Returns specific type string representation of the type that extends this class.</div>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/record/metadata/MapColumnMetadata.html#isMap--">isMap</a></span>()</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;org.apache.drill.exec.record.metadata.<a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html" title="class in org.apache.drill.exec.record.metadata">AbstractMapColumnMetadata</a></h3>
<code><a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html#appendContents-java.lang.StringBuilder-">appendContents</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html#bind-org.apache.drill.exec.record.metadata.TupleMetadata-">bind</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html#emptySchema--">emptySchema</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html#expectedWidth--">expectedWidth</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html#isEquivalent-org.apache.drill.exec.record.metadata.ColumnMetadata-">isEquivalent</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html#parentTuple--">parentTuple</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html#schema--">schema</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html#structureType--">structureType</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html#tupleSchema--">tupleSchema</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html#typeString--">typeString</a></code></li>
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<h3>Methods inherited from class&nbsp;org.apache.drill.exec.record.metadata.<a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html" title="class in org.apache.drill.exec.record.metadata">AbstractColumnMetadata</a></h3>
<code><a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#childSchema--">childSchema</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#columnString--">columnString</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#createColumnMetadata-java.lang.String-java.lang.String-org.apache.drill.common.types.TypeProtos.DataMode-java.util.Map-">createColumnMetadata</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#dateTimeFormatter--">dateTimeFormatter</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#decodeDefaultValue--">decodeDefaultValue</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#defaultValue--">defaultValue</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#dimensions--">dimensions</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#equals-java.lang.Object-">equals</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#equalsWithProperties-org.apache.drill.exec.record.metadata.AbstractColumnMetadata-">equalsWithProperties</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#equalsWithProperties-java.lang.Object-">equalsWithProperties</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#escapeSpecialSymbols-java.lang.String-">escapeSpecialSymbols</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#expectedElementCount--">expectedElementCount</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#format--">format</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#isArray--">isArray</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#isDict--">isDict</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#isDynamic--">isDynamic</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#isMultiList--">isMultiList</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#isNullable--">isNullable</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#isVariableWidth--">isVariableWidth</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#isVariant--">isVariant</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#majorType--">majorType</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#mode--">mode</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#name--">name</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#precision--">precision</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#properties--">properties</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#scale--">scale</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#setDefaultValue-java.lang.String-">setDefaultValue</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#setExpectedElementCount-int-">setExpectedElementCount</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#setExpectedWidth-int-">setExpectedWidth</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#setFormat-java.lang.String-">setFormat</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#toString--">toString</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#type--">type</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#valueFromString-java.lang.String-">valueFromString</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#valueToString-java.lang.Object-">valueToString</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#variantSchema--">variantSchema</a></code></li>
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<h3>Methods inherited from class&nbsp;org.apache.drill.exec.record.metadata.<a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html" title="class in org.apache.drill.exec.record.metadata">AbstractPropertied</a></h3>
<code><a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html#booleanProperty-java.lang.String-">booleanProperty</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html#booleanProperty-java.lang.String-boolean-">booleanProperty</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html#hashCode--">hashCode</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html#hasProperties--">hasProperties</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html#intProperty-java.lang.String-">intProperty</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html#intProperty-java.lang.String-int-">intProperty</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html#property-java.lang.String-">property</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html#property-java.lang.String-java.lang.String-">property</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html#removeProperty-java.lang.String-">removeProperty</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html#setBooleanProperty-java.lang.String-boolean-">setBooleanProperty</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html#setIntProperty-java.lang.String-int-">setIntProperty</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html#setProperties-java.util.Map-">setProperties</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractPropertied.html#setProperty-java.lang.String-java.lang.String-">setProperty</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h3>Methods inherited from interface&nbsp;org.apache.drill.exec.record.metadata.<a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html" title="interface in org.apache.drill.exec.record.metadata">Propertied</a></h3>
<code><a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html#booleanProperty-java.lang.String-">booleanProperty</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html#booleanProperty-java.lang.String-boolean-">booleanProperty</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html#hasProperties--">hasProperties</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html#intProperty-java.lang.String-">intProperty</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html#intProperty-java.lang.String-int-">intProperty</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html#pluginPrefix-java.lang.String-">pluginPrefix</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html#property-java.lang.String-">property</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html#property-java.lang.String-java.lang.String-">property</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html#removeProperty-java.lang.String-">removeProperty</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html#setBooleanProperty-java.lang.String-boolean-">setBooleanProperty</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html#setIntProperty-java.lang.String-int-">setIntProperty</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html#setProperties-java.util.Map-">setProperties</a>, <a href="../../../../../../org/apache/drill/exec/record/metadata/Propertied.html#setProperty-java.lang.String-java.lang.String-">setProperty</a></code></li>
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<pre>public&nbsp;MapColumnMetadata(<a href="../../../../../../org/apache/drill/exec/record/MaterializedField.html" title="class in org.apache.drill.exec.record">MaterializedField</a>&nbsp;schema)</pre>
<div class="block">Build a new map column from the field provided</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>schema</code> - materialized field description of the map</dd>
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<pre>public&nbsp;MapColumnMetadata(<a href="../../../../../../org/apache/drill/exec/record/metadata/MapColumnMetadata.html" title="class in org.apache.drill.exec.record.metadata">MapColumnMetadata</a>&nbsp;from)</pre>
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<pre>public&nbsp;MapColumnMetadata(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name,
<a href="../../../../../../org/apache/drill/common/types/TypeProtos.DataMode.html" title="enum in org.apache.drill.common.types">TypeProtos.DataMode</a>&nbsp;mode,
<a href="../../../../../../org/apache/drill/exec/record/metadata/TupleSchema.html" title="class in org.apache.drill.exec.record.metadata">TupleSchema</a>&nbsp;tupleSchema)</pre>
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<h4>copy</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a>&nbsp;copy()</pre>
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<h4>cloneEmpty</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a>&nbsp;cloneEmpty()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#cloneEmpty--">ColumnMetadata</a></code></span></div>
<div class="block">Create an empty version of this column. If the column is a scalar,
produces a simple copy. If a map, produces a clone without child
columns.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>empty clone of this column</dd>
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<pre>public&nbsp;boolean&nbsp;isMap()</pre>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html#isMap--">isMap</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html#isMap--">isMap</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractColumnMetadata.html" title="class in org.apache.drill.exec.record.metadata">AbstractColumnMetadata</a></code></dd>
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<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;internalTypeString()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html#internalTypeString--">AbstractMapColumnMetadata</a></code></span></div>
<div class="block">Returns specific type string representation of the type that extends this class.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html#internalTypeString--">internalTypeString</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../org/apache/drill/exec/record/metadata/AbstractMapColumnMetadata.html" title="class in org.apache.drill.exec.record.metadata">AbstractMapColumnMetadata</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>type string representation</dd>
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