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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.adapter.druid</a></div>
<h2 title="Class DruidConnectionImpl" class="title">Class DruidConnectionImpl</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<li>org.apache.calcite.adapter.druid.DruidConnectionImpl</li>
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<dd><code><a href="DruidConnection.html" title="interface in org.apache.calcite.adapter.druid">DruidConnection</a></code></dd>
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<pre>class <span class="typeNameLabel">DruidConnectionImpl</span>
extends java.lang.Object
implements <a href="DruidConnection.html" title="interface in org.apache.calcite.adapter.druid">DruidConnection</a></pre>
<div class="block">Implementation of <a href="DruidConnection.html" title="interface in org.apache.calcite.adapter.druid"><code>DruidConnection</code></a>.</div>
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<tr class="altColor">
<td class="colFirst"><code>private static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="DruidConnectionImpl.BlockingQueueEnumerator.html" title="class in org.apache.calcite.adapter.druid">DruidConnectionImpl.BlockingQueueEnumerator</a>&lt;<a href="DruidConnectionImpl.BlockingQueueEnumerator.html" title="type parameter in DruidConnectionImpl.BlockingQueueEnumerator">E</a>&gt;</span></code></th>
<td class="colLast">
<div class="block">An <a href="../../linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j"><code>Enumerator</code></a> that gets its rows from a <code>BlockingQueue</code>.</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><code>private static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="DruidConnectionImpl.JsonAggregator.html" title="class in org.apache.calcite.adapter.druid">DruidConnectionImpl.JsonAggregator</a></span></code></th>
<td class="colLast">
<div class="block">Element of the "aggregators" collection in the result of a
"segmentMetadata" call, populated by Jackson.</div>
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<tr class="altColor">
<td class="colFirst"><code>private static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="DruidConnectionImpl.JsonColumn.html" title="class in org.apache.calcite.adapter.druid">DruidConnectionImpl.JsonColumn</a></span></code></th>
<td class="colLast">
<div class="block">Element of the "columns" collection in the result of a
"segmentMetadata" call, populated by Jackson.</div>
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<tr class="rowColor">
<td class="colFirst"><code>private static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="DruidConnectionImpl.JsonSegmentMetadata.html" title="class in org.apache.calcite.adapter.druid">DruidConnectionImpl.JsonSegmentMetadata</a></span></code></th>
<td class="colLast">
<div class="block">Result of a "segmentMetadata" call, populated by Jackson.</div>
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<td class="colFirst"><code>(package private) static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="DruidConnectionImpl.Page.html" title="class in org.apache.calcite.adapter.druid">DruidConnectionImpl.Page</a></span></code></th>
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<div class="block">Progress through a large fetch.</div>
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<td class="colFirst"><code>private static interface&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="DruidConnectionImpl.RunnableQueueSink.html" title="interface in org.apache.calcite.adapter.druid">DruidConnectionImpl.RunnableQueueSink</a></span></code></th>
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<div class="block">A <a href="../../interpreter/Sink.html" title="interface in org.apache.calcite.interpreter"><code>Sink</code></a> that is also <code>Runnable</code>.</div>
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<td class="colFirst"><code>private java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#coordinatorUrl">coordinatorUrl</a></span></code></th>
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<td class="colFirst"><code>static java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#DEFAULT_RESPONSE_TIMESTAMP_COLUMN">DEFAULT_RESPONSE_TIMESTAMP_COLUMN</a></span></code></th>
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<td class="colFirst"><code>private static java.text.SimpleDateFormat</code></td>
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<td class="colFirst"><code>private java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#url">url</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>private static java.text.SimpleDateFormat</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#UTC_TIMESTAMP_FORMAT">UTC_TIMESTAMP_FORMAT</a></span></code></th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(java.lang.String,java.lang.String)">DruidConnectionImpl</a></span>&#8203;(java.lang.String&nbsp;url,
java.lang.String&nbsp;coordinatorUrl)</code></th>
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<td class="colFirst"><code><a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a>&lt;<a href="../../interpreter/Row.html" title="class in org.apache.calcite.interpreter">Row</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#enumerable(org.apache.calcite.adapter.druid.QueryType,java.lang.String,java.util.List,java.util.concurrent.ExecutorService)">enumerable</a></span>&#8203;(<a href="QueryType.html" title="enum in org.apache.calcite.adapter.druid">QueryType</a>&nbsp;queryType,
java.lang.String&nbsp;request,
java.util.List&lt;java.lang.String&gt;&nbsp;fieldNames,
java.util.concurrent.ExecutorService&nbsp;service)</code></th>
<td class="colLast">
<div class="block">Executes a request and returns the resulting rows as an
<a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j"><code>Enumerable</code></a>, running the parser in a thread provided by
<code>service</code>.</div>
</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#expect(com.fasterxml.jackson.core.JsonParser,com.fasterxml.jackson.core.JsonToken)">expect</a></span>&#8203;(com.fasterxml.jackson.core.JsonParser&nbsp;parser,
com.fasterxml.jackson.core.JsonToken&nbsp;token)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#expect(com.fasterxml.jackson.core.JsonToken,com.fasterxml.jackson.core.JsonToken)">expect</a></span>&#8203;(com.fasterxml.jackson.core.JsonToken&nbsp;token,
com.fasterxml.jackson.core.JsonToken&nbsp;expected)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#expectObjectField(com.fasterxml.jackson.core.JsonParser,java.lang.String)">expectObjectField</a></span>&#8203;(com.fasterxml.jackson.core.JsonParser&nbsp;parser,
java.lang.String&nbsp;name)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#expectScalarField(com.fasterxml.jackson.core.JsonParser,java.lang.String)">expectScalarField</a></span>&#8203;(com.fasterxml.jackson.core.JsonParser&nbsp;parser,
java.lang.String&nbsp;name)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>private java.lang.Long</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#extractTimestampField(com.fasterxml.jackson.core.JsonParser)">extractTimestampField</a></span>&#8203;(com.fasterxml.jackson.core.JsonParser&nbsp;parser)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>(package private) void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#metadata(java.lang.String,java.lang.String,java.util.List,java.util.Map,java.util.Set,java.util.Map)">metadata</a></span>&#8203;(java.lang.String&nbsp;dataSourceName,
java.lang.String&nbsp;timestampColumnName,
java.util.List&lt;org.joda.time.Interval&gt;&nbsp;intervals,
java.util.Map&lt;java.lang.String,&#8203;<a href="../../sql/type/SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&gt;&nbsp;fieldBuilder,
java.util.Set&lt;java.lang.String&gt;&nbsp;metricNameBuilder,
java.util.Map&lt;java.lang.String,&#8203;java.util.List&lt;<a href="ComplexMetric.html" title="class in org.apache.calcite.adapter.druid">ComplexMetric</a>&gt;&gt;&nbsp;complexMetrics)</code></th>
<td class="colLast">
<div class="block">Reads segment metadata, and populates a list of columns and metrics.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#parse(org.apache.calcite.adapter.druid.QueryType,java.io.InputStream,org.apache.calcite.interpreter.Sink,java.util.List,java.util.List,org.apache.calcite.adapter.druid.DruidConnectionImpl.Page)">parse</a></span>&#8203;(<a href="QueryType.html" title="enum in org.apache.calcite.adapter.druid">QueryType</a>&nbsp;queryType,
java.io.InputStream&nbsp;in,
<a href="../../interpreter/Sink.html" title="interface in org.apache.calcite.interpreter">Sink</a>&nbsp;sink,
java.util.List&lt;java.lang.String&gt;&nbsp;fieldNames,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;fieldTypes,
<a href="DruidConnectionImpl.Page.html" title="class in org.apache.calcite.adapter.druid">DruidConnectionImpl.Page</a>&nbsp;page)</code></th>
<td class="colLast">
<div class="block">Parses the output of a query, sending the results to a
<a href="../../interpreter/Sink.html" title="interface in org.apache.calcite.interpreter"><code>Sink</code></a>.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#parseField(java.util.List,java.util.List,int,org.apache.calcite.interpreter.Row.RowBuilder,com.fasterxml.jackson.core.JsonParser)">parseField</a></span>&#8203;(java.util.List&lt;java.lang.String&gt;&nbsp;fieldNames,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;fieldTypes,
int&nbsp;posTimestampField,
<a href="../../interpreter/Row.RowBuilder.html" title="class in org.apache.calcite.interpreter">Row.RowBuilder</a>&nbsp;rowBuilder,
com.fasterxml.jackson.core.JsonParser&nbsp;parser)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#parseFieldForName(java.util.List,java.util.List,int,org.apache.calcite.interpreter.Row.RowBuilder,com.fasterxml.jackson.core.JsonParser,java.lang.String)">parseFieldForName</a></span>&#8203;(java.util.List&lt;java.lang.String&gt;&nbsp;fieldNames,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;fieldTypes,
int&nbsp;posTimestampField,
<a href="../../interpreter/Row.RowBuilder.html" title="class in org.apache.calcite.interpreter">Row.RowBuilder</a>&nbsp;rowBuilder,
com.fasterxml.jackson.core.JsonParser&nbsp;parser,
java.lang.String&nbsp;fieldName)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#parseFields(java.util.List,java.util.List,int,org.apache.calcite.interpreter.Row.RowBuilder,com.fasterxml.jackson.core.JsonParser)">parseFields</a></span>&#8203;(java.util.List&lt;java.lang.String&gt;&nbsp;fieldNames,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;fieldTypes,
int&nbsp;posTimestampField,
<a href="../../interpreter/Row.RowBuilder.html" title="class in org.apache.calcite.interpreter">Row.RowBuilder</a>&nbsp;rowBuilder,
com.fasterxml.jackson.core.JsonParser&nbsp;parser)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#parseFields(java.util.List,java.util.List,org.apache.calcite.interpreter.Row.RowBuilder,com.fasterxml.jackson.core.JsonParser)">parseFields</a></span>&#8203;(java.util.List&lt;java.lang.String&gt;&nbsp;fieldNames,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;fieldTypes,
<a href="../../interpreter/Row.RowBuilder.html" title="class in org.apache.calcite.interpreter">Row.RowBuilder</a>&nbsp;rowBuilder,
com.fasterxml.jackson.core.JsonParser&nbsp;parser)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#request(org.apache.calcite.adapter.druid.QueryType,java.lang.String,org.apache.calcite.interpreter.Sink,java.util.List,java.util.List,org.apache.calcite.adapter.druid.DruidConnectionImpl.Page)">request</a></span>&#8203;(<a href="QueryType.html" title="enum in org.apache.calcite.adapter.druid">QueryType</a>&nbsp;queryType,
java.lang.String&nbsp;data,
<a href="../../interpreter/Sink.html" title="interface in org.apache.calcite.interpreter">Sink</a>&nbsp;sink,
java.util.List&lt;java.lang.String&gt;&nbsp;fieldNames,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;fieldTypes,
<a href="DruidConnectionImpl.Page.html" title="class in org.apache.calcite.adapter.druid">DruidConnectionImpl.Page</a>&nbsp;page)</code></th>
<td class="colLast">
<div class="block">Executes a query request.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>(package private) java.util.Set&lt;java.lang.String&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#tableNames()">tableNames</a></span>()</code></th>
<td class="colLast">
<div class="block">Reads data source names from Druid.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>private java.io.InputStream</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#traceResponse(java.io.InputStream)">traceResponse</a></span>&#8203;(java.io.InputStream&nbsp;in)</code></th>
<td class="colLast">&nbsp;</td>
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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>Field Detail</h3>
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<pre>private final&nbsp;java.lang.String url</pre>
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<pre>private final&nbsp;java.lang.String coordinatorUrl</pre>
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<pre>public static final&nbsp;java.lang.String DEFAULT_RESPONSE_TIMESTAMP_COLUMN</pre>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../constant-values.html#org.apache.calcite.adapter.druid.DruidConnectionImpl.DEFAULT_RESPONSE_TIMESTAMP_COLUMN">Constant Field Values</a></dd>
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<pre>private static final&nbsp;java.text.SimpleDateFormat UTC_TIMESTAMP_FORMAT</pre>
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<pre>private static final&nbsp;java.text.SimpleDateFormat TIMESTAMP_FORMAT</pre>
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<pre>DruidConnectionImpl&#8203;(java.lang.String&nbsp;url,
java.lang.String&nbsp;coordinatorUrl)</pre>
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<a id="request(org.apache.calcite.adapter.druid.QueryType,java.lang.String,org.apache.calcite.interpreter.Sink,java.util.List,java.util.List,org.apache.calcite.adapter.druid.DruidConnectionImpl.Page)">
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<pre class="methodSignature">public&nbsp;void&nbsp;request&#8203;(<a href="QueryType.html" title="enum in org.apache.calcite.adapter.druid">QueryType</a>&nbsp;queryType,
java.lang.String&nbsp;data,
<a href="../../interpreter/Sink.html" title="interface in org.apache.calcite.interpreter">Sink</a>&nbsp;sink,
java.util.List&lt;java.lang.String&gt;&nbsp;fieldNames,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;fieldTypes,
<a href="DruidConnectionImpl.Page.html" title="class in org.apache.calcite.adapter.druid">DruidConnectionImpl.Page</a>&nbsp;page)</pre>
<div class="block">Executes a query request.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>queryType</code> - Query type</dd>
<dd><code>data</code> - Data to post</dd>
<dd><code>sink</code> - Sink to which to send the parsed rows</dd>
<dd><code>fieldNames</code> - Names of fields</dd>
<dd><code>fieldTypes</code> - Types of fields (never null, but elements may be null)</dd>
<dd><code>page</code> - Page definition (in/out)</dd>
</dl>
</li>
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<a id="parse(org.apache.calcite.adapter.druid.QueryType,java.io.InputStream,org.apache.calcite.interpreter.Sink,java.util.List,java.util.List,org.apache.calcite.adapter.druid.DruidConnectionImpl.Page)">
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<h4>parse</h4>
<pre class="methodSignature">private&nbsp;void&nbsp;parse&#8203;(<a href="QueryType.html" title="enum in org.apache.calcite.adapter.druid">QueryType</a>&nbsp;queryType,
java.io.InputStream&nbsp;in,
<a href="../../interpreter/Sink.html" title="interface in org.apache.calcite.interpreter">Sink</a>&nbsp;sink,
java.util.List&lt;java.lang.String&gt;&nbsp;fieldNames,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;fieldTypes,
<a href="DruidConnectionImpl.Page.html" title="class in org.apache.calcite.adapter.druid">DruidConnectionImpl.Page</a>&nbsp;page)</pre>
<div class="block">Parses the output of a query, sending the results to a
<a href="../../interpreter/Sink.html" title="interface in org.apache.calcite.interpreter"><code>Sink</code></a>.</div>
</li>
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<h4>parseFields</h4>
<pre class="methodSignature">private&nbsp;void&nbsp;parseFields&#8203;(java.util.List&lt;java.lang.String&gt;&nbsp;fieldNames,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;fieldTypes,
<a href="../../interpreter/Row.RowBuilder.html" title="class in org.apache.calcite.interpreter">Row.RowBuilder</a>&nbsp;rowBuilder,
com.fasterxml.jackson.core.JsonParser&nbsp;parser)
throws java.io.IOException</pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code></dd>
</dl>
</li>
</ul>
<a id="parseFields(java.util.List,java.util.List,int,org.apache.calcite.interpreter.Row.RowBuilder,com.fasterxml.jackson.core.JsonParser)">
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<pre class="methodSignature">private&nbsp;void&nbsp;parseFields&#8203;(java.util.List&lt;java.lang.String&gt;&nbsp;fieldNames,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;fieldTypes,
int&nbsp;posTimestampField,
<a href="../../interpreter/Row.RowBuilder.html" title="class in org.apache.calcite.interpreter">Row.RowBuilder</a>&nbsp;rowBuilder,
com.fasterxml.jackson.core.JsonParser&nbsp;parser)
throws java.io.IOException</pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code></dd>
</dl>
</li>
</ul>
<a id="parseField(java.util.List,java.util.List,int,org.apache.calcite.interpreter.Row.RowBuilder,com.fasterxml.jackson.core.JsonParser)">
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<pre class="methodSignature">private&nbsp;void&nbsp;parseField&#8203;(java.util.List&lt;java.lang.String&gt;&nbsp;fieldNames,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;fieldTypes,
int&nbsp;posTimestampField,
<a href="../../interpreter/Row.RowBuilder.html" title="class in org.apache.calcite.interpreter">Row.RowBuilder</a>&nbsp;rowBuilder,
com.fasterxml.jackson.core.JsonParser&nbsp;parser)
throws java.io.IOException</pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code></dd>
</dl>
</li>
</ul>
<a id="parseFieldForName(java.util.List,java.util.List,int,org.apache.calcite.interpreter.Row.RowBuilder,com.fasterxml.jackson.core.JsonParser,java.lang.String)">
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<pre class="methodSignature">private&nbsp;void&nbsp;parseFieldForName&#8203;(java.util.List&lt;java.lang.String&gt;&nbsp;fieldNames,
java.util.List&lt;org.apache.calcite.avatica.ColumnMetaData.Rep&gt;&nbsp;fieldTypes,
int&nbsp;posTimestampField,
<a href="../../interpreter/Row.RowBuilder.html" title="class in org.apache.calcite.interpreter">Row.RowBuilder</a>&nbsp;rowBuilder,
com.fasterxml.jackson.core.JsonParser&nbsp;parser,
java.lang.String&nbsp;fieldName)
throws java.io.IOException</pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code></dd>
</dl>
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<pre class="methodSignature">private&nbsp;void&nbsp;expect&#8203;(com.fasterxml.jackson.core.JsonParser&nbsp;parser,
com.fasterxml.jackson.core.JsonToken&nbsp;token)
throws java.io.IOException</pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code></dd>
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<pre class="methodSignature">private&nbsp;void&nbsp;expect&#8203;(com.fasterxml.jackson.core.JsonToken&nbsp;token,
com.fasterxml.jackson.core.JsonToken&nbsp;expected)
throws java.io.IOException</pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code></dd>
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<pre class="methodSignature">private&nbsp;void&nbsp;expectScalarField&#8203;(com.fasterxml.jackson.core.JsonParser&nbsp;parser,
java.lang.String&nbsp;name)
throws java.io.IOException</pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code></dd>
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<pre class="methodSignature">private&nbsp;void&nbsp;expectObjectField&#8203;(com.fasterxml.jackson.core.JsonParser&nbsp;parser,
java.lang.String&nbsp;name)
throws java.io.IOException</pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code></dd>
</dl>
</li>
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<pre class="methodSignature">private&nbsp;java.lang.Long&nbsp;extractTimestampField&#8203;(com.fasterxml.jackson.core.JsonParser&nbsp;parser)
throws java.io.IOException</pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code></dd>
</dl>
</li>
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<pre class="methodSignature">public&nbsp;<a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a>&lt;<a href="../../interpreter/Row.html" title="class in org.apache.calcite.interpreter">Row</a>&gt;&nbsp;enumerable&#8203;(<a href="QueryType.html" title="enum in org.apache.calcite.adapter.druid">QueryType</a>&nbsp;queryType,
java.lang.String&nbsp;request,
java.util.List&lt;java.lang.String&gt;&nbsp;fieldNames,
java.util.concurrent.ExecutorService&nbsp;service)
throws java.io.IOException</pre>
<div class="block">Executes a request and returns the resulting rows as an
<a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j"><code>Enumerable</code></a>, running the parser in a thread provided by
<code>service</code>.</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code></dd>
</dl>
</li>
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<pre class="methodSignature">void&nbsp;metadata&#8203;(java.lang.String&nbsp;dataSourceName,
java.lang.String&nbsp;timestampColumnName,
java.util.List&lt;org.joda.time.Interval&gt;&nbsp;intervals,
java.util.Map&lt;java.lang.String,&#8203;<a href="../../sql/type/SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&gt;&nbsp;fieldBuilder,
java.util.Set&lt;java.lang.String&gt;&nbsp;metricNameBuilder,
java.util.Map&lt;java.lang.String,&#8203;java.util.List&lt;<a href="ComplexMetric.html" title="class in org.apache.calcite.adapter.druid">ComplexMetric</a>&gt;&gt;&nbsp;complexMetrics)</pre>
<div class="block">Reads segment metadata, and populates a list of columns and metrics.</div>
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<pre class="methodSignature">java.util.Set&lt;java.lang.String&gt;&nbsp;tableNames()</pre>
<div class="block">Reads data source names from Druid.</div>
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<pre class="methodSignature">private&nbsp;java.io.InputStream&nbsp;traceResponse&#8203;(java.io.InputStream&nbsp;in)</pre>
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