| <!DOCTYPE HTML> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc (17) --> |
| <title>CsvEnumerator (Apache Calcite API)</title> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <meta name="description" content="declaration: package: org.apache.calcite.adapter.file, class: CsvEnumerator"> |
| <meta name="generator" content="javadoc/ClassWriterImpl"> |
| <link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style"> |
| <link rel="stylesheet" type="text/css" href="../../../../../script-dir/jquery-ui.min.css" title="Style"> |
| <link rel="stylesheet" type="text/css" href="../../../../../jquery-ui.overrides.css" title="Style"> |
| <script type="text/javascript" src="../../../../../script.js"></script> |
| <script type="text/javascript" src="../../../../../script-dir/jquery-3.5.1.min.js"></script> |
| <script type="text/javascript" src="../../../../../script-dir/jquery-ui.min.js"></script> |
| </head> |
| <body class="class-declaration-page"> |
| <script type="text/javascript">var evenRowColor = "even-row-color"; |
| var oddRowColor = "odd-row-color"; |
| var tableTab = "table-tab"; |
| var activeTableTab = "active-table-tab"; |
| var pathtoroot = "../../../../../"; |
| loadScripts(document, 'script');</script> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| <div class="flex-box"> |
| <header role="banner" class="flex-header"> |
| <nav role="navigation"> |
| <!-- ========= START OF TOP NAVBAR ======= --> |
| <div class="top-nav" id="navbar-top"> |
| <div class="skip-nav"><a href="#skip-navbar-top" title="Skip navigation links">Skip navigation links</a></div> |
| <div class="about-language"><b>Apache Calcite</b></div> |
| <ul id="navbar-top-firstrow" class="nav-list" title="Navigation"> |
| <li><a href="../../../../../index.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="nav-bar-cell1-rev">Class</li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../help-doc.html#class">Help</a></li> |
| </ul> |
| </div> |
| <div class="sub-nav"> |
| <div> |
| <ul class="sub-nav-list"> |
| <li>Summary: </li> |
| <li>Nested | </li> |
| <li>Field | </li> |
| <li><a href="#constructor-summary">Constr</a> | </li> |
| <li><a href="#method-summary">Method</a></li> |
| </ul> |
| <ul class="sub-nav-list"> |
| <li>Detail: </li> |
| <li>Field | </li> |
| <li><a href="#constructor-detail">Constr</a> | </li> |
| <li><a href="#method-detail">Method</a></li> |
| </ul> |
| </div> |
| <div class="nav-list-search"><label for="search-input">SEARCH:</label> |
| <input type="text" id="search-input" value="search" disabled="disabled"> |
| <input type="reset" id="reset-button" value="reset" disabled="disabled"> |
| </div> |
| </div> |
| <!-- ========= END OF TOP NAVBAR ========= --> |
| <span class="skip-nav" id="skip-navbar-top"></span></nav> |
| </header> |
| <div class="flex-content"> |
| <main role="main"> |
| <!-- ======== START OF CLASS DATA ======== --> |
| <div class="header"> |
| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.calcite.adapter.file</a></div> |
| <h1 title="Class CsvEnumerator" class="title">Class CsvEnumerator<E></h1> |
| </div> |
| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a> |
| <div class="inheritance">org.apache.calcite.adapter.file.CsvEnumerator<E></div> |
| </div> |
| <section class="class-description" id="class-description"> |
| <dl class="notes"> |
| <dt>Type Parameters:</dt> |
| <dd><code>E</code> - Row type</dd> |
| </dl> |
| <dl class="notes"> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/AutoCloseable.html" title="class or interface in java.lang" class="external-link">AutoCloseable</a></code>, <code><a href="../../linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j">Enumerator</a><E></code></dd> |
| </dl> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">CsvEnumerator<E></span> |
| <span class="extends-implements">extends <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a> |
| implements <a href="../../linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j">Enumerator</a><E></span></div> |
| <div class="block">Enumerator that reads from a CSV file.</div> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <li> |
| <section class="constructor-summary" id="constructor-summary"> |
| <h2>Constructor Summary</h2> |
| <div class="caption"><span>Constructors</span></div> |
| <div class="summary-table two-column-summary"> |
| <div class="table-header col-first">Constructor</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E(org.apache.calcite.util.Source,java.util.concurrent.atomic.AtomicBoolean,boolean,java.lang.String%5B%5D,org.apache.calcite.adapter.file.CsvEnumerator.RowConverter)" class="member-name-link">CsvEnumerator</a><wbr>(<a href="../../util/Source.html" title="interface in org.apache.calcite.util">Source</a> source, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/concurrent/atomic/AtomicBoolean.html" title="class or interface in java.util.concurrent.atomic" class="external-link">AtomicBoolean</a> cancelFlag, |
| boolean stream, |
| @Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a> @Nullable [] filterValues, |
| org.apache.calcite.adapter.file.CsvEnumerator.RowConverter<<a href="CsvEnumerator.html" title="type parameter in CsvEnumerator">E</a>> rowConverter)</code></div> |
| <div class="col-last even-row-color"> </div> |
| <div class="col-constructor-name odd-row-color"><code><a href="#%3Cinit%3E(org.apache.calcite.util.Source,java.util.concurrent.atomic.AtomicBoolean,java.util.List,java.util.List)" class="member-name-link">CsvEnumerator</a><wbr>(<a href="../../util/Source.html" title="interface in org.apache.calcite.util">Source</a> source, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/concurrent/atomic/AtomicBoolean.html" title="class or interface in java.util.concurrent.atomic" class="external-link">AtomicBoolean</a> cancelFlag, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>> fieldTypes, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Integer.html" title="class or interface in java.lang" class="external-link">Integer</a>> fields)</code></div> |
| <div class="col-last odd-row-color"> </div> |
| </div> |
| </section> |
| </li> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <li> |
| <section class="method-summary" id="method-summary"> |
| <h2>Method Summary</h2> |
| <div id="method-summary-table"> |
| <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab1" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab1', 3)" class="table-tab">Static Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div> |
| <div id="method-summary-table.tabpanel" role="tabpanel"> |
| <div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static org.apache.calcite.adapter.file.CsvEnumerator.RowConverter<@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>[]></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#arrayConverter(java.util.List,java.util.List,boolean)" class="member-name-link">arrayConverter</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>> fieldTypes, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Integer.html" title="class or interface in java.lang" class="external-link">Integer</a>> fields, |
| boolean stream)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#close()" class="member-name-link">close</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Closes this enumerable and releases resources.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="CsvEnumerator.html" title="type parameter in CsvEnumerator">E</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#current()" class="member-name-link">current</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Gets the current element in the collection.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#deduceRowType(org.apache.calcite.adapter.java.JavaTypeFactory,org.apache.calcite.util.Source,java.util.List,java.lang.Boolean)" class="member-name-link">deduceRowType</a><wbr>(<a href="../java/JavaTypeFactory.html" title="interface in org.apache.calcite.adapter.java">JavaTypeFactory</a> typeFactory, |
| <a href="../../util/Source.html" title="interface in org.apache.calcite.util">Source</a> source, |
| @Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>> fieldTypes, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Boolean.html" title="class or interface in java.lang" class="external-link">Boolean</a> stream)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Deduces the names and types of a table's columns by reading the first line |
| of a CSV file.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static int[]</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#identityList(int)" class="member-name-link">identityList</a><wbr>(int n)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Returns an array of integers {0, ..., n - 1}.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#moveNext()" class="member-name-link">moveNext</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Advances the enumerator to the next element of the collection.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>protected static <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/math/BigDecimal.html" title="class or interface in java.math" class="external-link">BigDecimal</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#parseDecimal(int,int,java.lang.String)" class="member-name-link">parseDecimal</a><wbr>(int precision, |
| int scale, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a> string)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#reset()" class="member-name-link">reset</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Sets the enumerator to its initial position, which is before the first |
| element in the collection.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class java.lang.<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <li> |
| <section class="constructor-details" id="constructor-detail"> |
| <h2>Constructor Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="<init>(org.apache.calcite.util.Source,java.util.concurrent.atomic.AtomicBoolean,java.util.List,java.util.List)"> |
| <h3>CsvEnumerator</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="element-name">CsvEnumerator</span><wbr><span class="parameters">(<a href="../../util/Source.html" title="interface in org.apache.calcite.util">Source</a> source, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/concurrent/atomic/AtomicBoolean.html" title="class or interface in java.util.concurrent.atomic" class="external-link">AtomicBoolean</a> cancelFlag, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>> fieldTypes, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Integer.html" title="class or interface in java.lang" class="external-link">Integer</a>> fields)</span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="<init>(org.apache.calcite.util.Source,java.util.concurrent.atomic.AtomicBoolean,boolean,java.lang.String[],org.apache.calcite.adapter.file.CsvEnumerator.RowConverter)"> |
| <h3>CsvEnumerator</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="element-name">CsvEnumerator</span><wbr><span class="parameters">(<a href="../../util/Source.html" title="interface in org.apache.calcite.util">Source</a> source, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/concurrent/atomic/AtomicBoolean.html" title="class or interface in java.util.concurrent.atomic" class="external-link">AtomicBoolean</a> cancelFlag, |
| boolean stream, |
| @Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a> @Nullable [] filterValues, |
| org.apache.calcite.adapter.file.CsvEnumerator.RowConverter<<a href="CsvEnumerator.html" title="type parameter in CsvEnumerator">E</a>> rowConverter)</span></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method-detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="arrayConverter(java.util.List,java.util.List,boolean)"> |
| <h3>arrayConverter</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type">org.apache.calcite.adapter.file.CsvEnumerator.RowConverter<@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>[]></span> <span class="element-name">arrayConverter</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>> fieldTypes, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Integer.html" title="class or interface in java.lang" class="external-link">Integer</a>> fields, |
| boolean stream)</span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="deduceRowType(org.apache.calcite.adapter.java.JavaTypeFactory,org.apache.calcite.util.Source,java.util.List,java.lang.Boolean)"> |
| <h3>deduceRowType</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span> <span class="element-name">deduceRowType</span><wbr><span class="parameters">(<a href="../java/JavaTypeFactory.html" title="interface in org.apache.calcite.adapter.java">JavaTypeFactory</a> typeFactory, |
| <a href="../../util/Source.html" title="interface in org.apache.calcite.util">Source</a> source, |
| @Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>> fieldTypes, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Boolean.html" title="class or interface in java.lang" class="external-link">Boolean</a> stream)</span></div> |
| <div class="block">Deduces the names and types of a table's columns by reading the first line |
| of a CSV file.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="current()"> |
| <h3>current</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="CsvEnumerator.html" title="type parameter in CsvEnumerator">E</a></span> <span class="element-name">current</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="../../linq4j/Enumerator.html#current()">Enumerator</a></code></span></div> |
| <div class="block">Gets the current element in the collection. |
| |
| <p>After an enumerator is created or after the <a href="../../linq4j/Enumerator.html#reset()"><code>Enumerator.reset()</code></a> method is |
| called, the <a href="../../linq4j/Enumerator.html#moveNext()"><code>Enumerator.moveNext()</code></a> method must be called to advance the |
| enumerator to the first element of the collection before reading the |
| value of the <code>current</code> property; otherwise, <code>current</code> is |
| undefined. |
| |
| <p>This method also throws <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/NoSuchElementException.html" title="class or interface in java.util" class="external-link"><code>NoSuchElementException</code></a> if |
| the last call to <code>moveNext</code> returned <code>false</code>, which indicates |
| the end of the collection. |
| |
| <p>This method does not move the position of the enumerator, and |
| consecutive calls to <code>current</code> return the same object until either |
| <code>moveNext</code> or <code>reset</code> is called. |
| |
| <p>An enumerator remains valid as long as the collection remains |
| unchanged. If changes are made to the collection, such as adding, |
| modifying, or deleting elements, the enumerator is irrecoverably |
| invalidated. The next call to <code>moveNext</code> or <code>reset</code> may, |
| at the discretion of the implementation, throw a |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/ConcurrentModificationException.html" title="class or interface in java.util" class="external-link"><code>ConcurrentModificationException</code></a>. If the collection is |
| modified between <code>moveNext</code> and <code>current</code>, <code>current</code> |
| returns the element that it is set to, even if the enumerator is already |
| invalidated.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="../../linq4j/Enumerator.html#current()">current</a></code> in interface <code><a href="../../linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j">Enumerator</a><<a href="CsvEnumerator.html" title="type parameter in CsvEnumerator">E</a>></code></dd> |
| <dt>Returns:</dt> |
| <dd>Current element</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="moveNext()"> |
| <h3>moveNext</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">boolean</span> <span class="element-name">moveNext</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="../../linq4j/Enumerator.html#moveNext()">Enumerator</a></code></span></div> |
| <div class="block">Advances the enumerator to the next element of the collection. |
| |
| <p>After an enumerator is created or after the <code>reset</code> method is |
| called, an enumerator is positioned before the first element of the |
| collection, and the first call to the <code>moveNext</code> method moves the |
| enumerator over the first element of the collection. |
| |
| <p>If <code>moveNext</code> passes the end of the collection, the enumerator |
| is positioned after the last element in the collection and |
| <code>moveNext</code> returns <code>false</code>. When the enumerator is at this |
| position, subsequent calls to <code>moveNext</code> also return <code>false</code> |
| until <code>#reset</code> is called. |
| |
| <p>An enumerator remains valid as long as the collection remains |
| unchanged. If changes are made to the collection, such as adding, |
| modifying, or deleting elements, the enumerator is irrecoverably |
| invalidated. The next call to <code>moveNext</code> or <a href="../../linq4j/Enumerator.html#reset()"><code>Enumerator.reset()</code></a> may, |
| at the discretion of the implementation, throw a |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/ConcurrentModificationException.html" title="class or interface in java.util" class="external-link"><code>ConcurrentModificationException</code></a>.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="../../linq4j/Enumerator.html#moveNext()">moveNext</a></code> in interface <code><a href="../../linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j">Enumerator</a><<a href="CsvEnumerator.html" title="type parameter in CsvEnumerator">E</a>></code></dd> |
| <dt>Returns:</dt> |
| <dd><code>true</code> if the enumerator was successfully advanced to the |
| next element; <code>false</code> if the enumerator has passed the end of |
| the collection</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="reset()"> |
| <h3>reset</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">reset</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="../../linq4j/Enumerator.html#reset()">Enumerator</a></code></span></div> |
| <div class="block">Sets the enumerator to its initial position, which is before the first |
| element in the collection. |
| |
| <p>An enumerator remains valid as long as the collection remains |
| unchanged. If changes are made to the collection, such as adding, |
| modifying, or deleting elements, the enumerator is irrecoverably |
| invalidated. The next call to <a href="../../linq4j/Enumerator.html#moveNext()"><code>Enumerator.moveNext()</code></a> or <code>reset</code> may, |
| at the discretion of the implementation, throw a |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/ConcurrentModificationException.html" title="class or interface in java.util" class="external-link"><code>ConcurrentModificationException</code></a>. |
| |
| <p>This method is optional; it may throw |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/UnsupportedOperationException.html" title="class or interface in java.lang" class="external-link"><code>UnsupportedOperationException</code></a>. |
| |
| <p><b>Notes to Implementers</b> |
| |
| <p>All calls to Reset must result in the same state for the enumerator. |
| The preferred implementation is to move the enumerator to the beginning |
| of the collection, before the first element. This invalidates the |
| enumerator if the collection has been modified since the enumerator was |
| created, which is consistent with <a href="../../linq4j/Enumerator.html#moveNext()"><code>Enumerator.moveNext()</code></a> and |
| <a href="../../linq4j/Enumerator.html#current()"><code>Enumerator.current()</code></a>.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="../../linq4j/Enumerator.html#reset()">reset</a></code> in interface <code><a href="../../linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j">Enumerator</a><<a href="CsvEnumerator.html" title="type parameter in CsvEnumerator">E</a>></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="close()"> |
| <h3>close</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">close</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="../../linq4j/Enumerator.html#close()">Enumerator</a></code></span></div> |
| <div class="block">Closes this enumerable and releases resources. |
| |
| <p>This method is idempotent. Calling it multiple times has the same effect |
| as calling it once.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/AutoCloseable.html#close()" title="class or interface in java.lang" class="external-link">close</a></code> in interface <code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/AutoCloseable.html" title="class or interface in java.lang" class="external-link">AutoCloseable</a></code></dd> |
| <dt>Specified by:</dt> |
| <dd><code><a href="../../linq4j/Enumerator.html#close()">close</a></code> in interface <code><a href="../../linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j">Enumerator</a><<a href="CsvEnumerator.html" title="type parameter in CsvEnumerator">E</a>></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="identityList(int)"> |
| <h3>identityList</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type">int[]</span> <span class="element-name">identityList</span><wbr><span class="parameters">(int n)</span></div> |
| <div class="block">Returns an array of integers {0, ..., n - 1}.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="parseDecimal(int,int,java.lang.String)"> |
| <h3>parseDecimal</h3> |
| <div class="member-signature"><span class="modifiers">protected static</span> <span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/math/BigDecimal.html" title="class or interface in java.math" class="external-link">BigDecimal</a></span> <span class="element-name">parseDecimal</span><wbr><span class="parameters">(int precision, |
| int scale, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a> string)</span></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <!-- ========= END OF CLASS DATA ========= --> |
| </main> |
| <footer role="contentinfo"> |
| <hr> |
| <p class="legal-copy"><small>Copyright © 2012-2023 Apache Software Foundation. All Rights Reserved.</small></p> |
| </footer> |
| </div> |
| </div> |
| </body> |
| </html> |