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<div class="sub-title"><span class="module-label-in-type">Module</span>&nbsp;<a href="../../../../module-summary.html">org.apache.jena.arq</a></div>
<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.apache.jena.query</a></div>
<h1 title="Enum Class TxnType" class="title">Enum Class TxnType</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"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Enum.html" title="class or interface in java.lang" class="external-link">java.lang.Enum</a>&lt;<a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a>&gt;
<div class="inheritance">org.apache.jena.query.TxnType</div>
</div>
</div>
<section class="class-description" id="class-description">
<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/io/Serializable.html" title="class or interface in java.io" class="external-link">Serializable</a></code>, <code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Comparable.html" title="class or interface in java.lang" class="external-link">Comparable</a>&lt;<a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a>&gt;</code>, <code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/constant/Constable.html" title="class or interface in java.lang.constant" class="external-link">Constable</a></code></dd>
</dl>
<hr>
<div class="type-signature"><span class="modifiers">public enum </span><span class="element-name type-name-label">TxnType</span>
<span class="extends-implements">extends <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Enum.html" title="class or interface in java.lang" class="external-link">Enum</a>&lt;<a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a>&gt;</span></div>
</section>
<section class="summary">
<ul class="summary-list">
<!-- ======== NESTED CLASS SUMMARY ======== -->
<li>
<section class="nested-class-summary" id="nested-class-summary">
<h2>Nested Class Summary</h2>
<div class="inherited-list">
<h2 id="nested-classes-inherited-from-class-java.lang.Enum">Nested classes/interfaces inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Enum.html" title="class or interface in java.lang" class="external-link">Enum</a></h2>
<code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Enum.EnumDesc.html" title="class or interface in java.lang" class="external-link">Enum.EnumDesc</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Enum.EnumDesc.html" title="class or interface in java.lang" class="external-link">E</a> extends <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Enum.html" title="class or interface in java.lang" class="external-link">Enum</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Enum.EnumDesc.html" title="class or interface in java.lang" class="external-link">E</a>&gt;&gt;</code></div>
</section>
</li>
<!-- =========== ENUM CONSTANT SUMMARY =========== -->
<li>
<section class="constants-summary" id="enum-constant-summary">
<h2>Enum Constant Summary</h2>
<div class="caption"><span>Enum Constants</span></div>
<div class="summary-table two-column-summary">
<div class="table-header col-first">Enum Constant</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color"><code><a href="#READ" class="member-name-link">READ</a></code></div>
<div class="col-last even-row-color">
<div class="block">Transaction mode:
<code>WRITE</code>: this guarantees a WRITE will complete if <code>commit()</code> is
called.</div>
</div>
<div class="col-first odd-row-color"><code><a href="#READ_COMMITTED_PROMOTE" class="member-name-link">READ_COMMITTED_PROMOTE</a></code></div>
<div class="col-last odd-row-color">&nbsp;</div>
<div class="col-first even-row-color"><code><a href="#READ_PROMOTE" class="member-name-link">READ_PROMOTE</a></code></div>
<div class="col-last even-row-color">&nbsp;</div>
<div class="col-first odd-row-color"><code><a href="#WRITE" class="member-name-link">WRITE</a></code></div>
<div class="col-last odd-row-color">&nbsp;</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-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 <a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#convert(org.apache.jena.query.ReadWrite)" class="member-name-link">convert</a><wbr>(<a href="ReadWrite.html" title="enum class in org.apache.jena.query">ReadWrite</a>&nbsp;rw)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
<div class="block">Convert a <a href="ReadWrite.html" title="enum class in org.apache.jena.query"><code>ReadWrite</code></a> mode to <code>TxnType</code></div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="ReadWrite.html" title="enum class in org.apache.jena.query">ReadWrite</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#convert(org.apache.jena.query.TxnType)" class="member-name-link">convert</a><wbr>(<a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a>&nbsp;txnType)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
<div class="block">Convert a <code>TxnType</code> mode to <a href="ReadWrite.html" title="enum class in org.apache.jena.query"><code>ReadWrite</code></a> : "promote" not supported.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="ReadWrite.html" title="enum class in org.apache.jena.query">ReadWrite</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#initial(org.apache.jena.query.TxnType)" class="member-name-link">initial</a><wbr>(<a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a>&nbsp;txnType)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
<div class="block">Translate a <code>TxnType</code> to it's initial <a href="ReadWrite.html" title="enum class in org.apache.jena.query"><code>ReadWrite</code></a> mode.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#promote(org.apache.jena.sparql.core.Transactional.Promote)" class="member-name-link">promote</a><wbr>(<a href="../sparql/core/Transactional.Promote.html" title="enum class in org.apache.jena.sparql.core">Transactional.Promote</a>&nbsp;promoteMode)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
<div class="block">Convert a <code>TxnType</code> mode to <a href="ReadWrite.html" title="enum class in org.apache.jena.query"><code>ReadWrite</code></a> : "promote" not supported.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#valueOf(java.lang.String)" class="member-name-link">valueOf</a><wbr>(<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>&nbsp;name)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
<div class="block">Returns the enum constant of this class with the specified name.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a>[]</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#values()" class="member-name-link">values</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
<div class="block">Returns an array containing the constants of this enum class, in
the order they are declared.</div>
</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.Enum">Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Enum.html" title="class or interface in java.lang" class="external-link">Enum</a></h3>
<code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Enum.html#compareTo(E)" title="class or interface in java.lang" class="external-link">compareTo</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Enum.html#describeConstable()" title="class or interface in java.lang" class="external-link">describeConstable</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Enum.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/Enum.html#getDeclaringClass()" title="class or interface in java.lang" class="external-link">getDeclaringClass</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Enum.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/Enum.html#name()" title="class or interface in java.lang" class="external-link">name</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Enum.html#ordinal()" title="class or interface in java.lang" class="external-link">ordinal</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Enum.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/Enum.html#valueOf(java.lang.Class,java.lang.String)" title="class or interface in java.lang" class="external-link">valueOf</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;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#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#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#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">
<!-- ============ ENUM CONSTANT DETAIL =========== -->
<li>
<section class="constant-details" id="enum-constant-detail">
<h2>Enum Constant Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="READ">
<h3>READ</h3>
<div class="member-signature"><span class="modifiers">public static final</span>&nbsp;<span class="return-type"><a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a></span>&nbsp;<span class="element-name">READ</span></div>
<div class="block">Transaction mode:
<ul>
<li><code>WRITE</code>: this guarantees a WRITE will complete if <code>commit()</code> is
called. The same as <code>begin(ReadWrite.WRITE)</code>.
<li><code>READ</code>: the transaction can not promote to WRITE,ensuring read-only
access to the data. The same as <code>begin(ReadWrite.READ)</code>.
<li><code>READ_PROMOTE</code>: the transaction will go from "read" to "write" if the
dataset has not been modified but if it has, the promotion fails with
exception.
<li><code>READ_COMMITTED_PROMOTE</code>: Use this with care. The promotion will succeed but
changes from other transactions become visible.
</ul>
Read committed: at the point transaction attempts promotion from "read" to
"write", the system checks if the dataset has changed since the transaction started
(called <code>begin</code>). If <code>READ_PROMOTE</code>, the dataset must not have
changed; if <code>READ_COMMITTED_PROMOTE</code> any intermediate changes are
visible but the application can not assume any data it has read in the
transaction is the same as it was at the point the transaction started.</div>
</section>
</li>
<li>
<section class="detail" id="WRITE">
<h3>WRITE</h3>
<div class="member-signature"><span class="modifiers">public static final</span>&nbsp;<span class="return-type"><a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a></span>&nbsp;<span class="element-name">WRITE</span></div>
</section>
</li>
<li>
<section class="detail" id="READ_PROMOTE">
<h3>READ_PROMOTE</h3>
<div class="member-signature"><span class="modifiers">public static final</span>&nbsp;<span class="return-type"><a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a></span>&nbsp;<span class="element-name">READ_PROMOTE</span></div>
</section>
</li>
<li>
<section class="detail" id="READ_COMMITTED_PROMOTE">
<h3>READ_COMMITTED_PROMOTE</h3>
<div class="member-signature"><span class="modifiers">public static final</span>&nbsp;<span class="return-type"><a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a></span>&nbsp;<span class="element-name">READ_COMMITTED_PROMOTE</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="values()">
<h3>values</h3>
<div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a>[]</span>&nbsp;<span class="element-name">values</span>()</div>
<div class="block">Returns an array containing the constants of this enum class, in
the order they are declared.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>an array containing the constants of this enum class, in the order they are declared</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="valueOf(java.lang.String)">
<h3>valueOf</h3>
<div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a></span>&nbsp;<span class="element-name">valueOf</span><wbr><span class="parameters">(<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>&nbsp;name)</span></div>
<div class="block">Returns the enum constant of this class with the specified name.
The string must match <i>exactly</i> an identifier used to declare an
enum constant in this class. (Extraneous whitespace characters are
not permitted.)</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>name</code> - the name of the enum constant to be returned.</dd>
<dt>Returns:</dt>
<dd>the enum constant with the specified name</dd>
<dt>Throws:</dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/IllegalArgumentException.html" title="class or interface in java.lang" class="external-link">IllegalArgumentException</a></code> - if this enum class has no constant with the specified name</dd>
<dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/NullPointerException.html" title="class or interface in java.lang" class="external-link">NullPointerException</a></code> - if the argument is null</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="convert(org.apache.jena.query.ReadWrite)">
<h3>convert</h3>
<div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a></span>&nbsp;<span class="element-name">convert</span><wbr><span class="parameters">(<a href="ReadWrite.html" title="enum class in org.apache.jena.query">ReadWrite</a>&nbsp;rw)</span></div>
<div class="block">Convert a <a href="ReadWrite.html" title="enum class in org.apache.jena.query"><code>ReadWrite</code></a> mode to <code>TxnType</code></div>
</section>
</li>
<li>
<section class="detail" id="convert(org.apache.jena.query.TxnType)">
<h3>convert</h3>
<div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="ReadWrite.html" title="enum class in org.apache.jena.query">ReadWrite</a></span>&nbsp;<span class="element-name">convert</span><wbr><span class="parameters">(<a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a>&nbsp;txnType)</span></div>
<div class="block">Convert a <code>TxnType</code> mode to <a href="ReadWrite.html" title="enum class in org.apache.jena.query"><code>ReadWrite</code></a> : "promote" not supported.</div>
</section>
</li>
<li>
<section class="detail" id="initial(org.apache.jena.query.TxnType)">
<h3>initial</h3>
<div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="ReadWrite.html" title="enum class in org.apache.jena.query">ReadWrite</a></span>&nbsp;<span class="element-name">initial</span><wbr><span class="parameters">(<a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a>&nbsp;txnType)</span></div>
<div class="block">Translate a <code>TxnType</code> to it's initial <a href="ReadWrite.html" title="enum class in org.apache.jena.query"><code>ReadWrite</code></a> mode.
<code>WRITE -&gt; WRITE</code>, <code>READ* -&gt; READ</code> regardless of promotion setting.</div>
</section>
</li>
<li>
<section class="detail" id="promote(org.apache.jena.sparql.core.Transactional.Promote)">
<h3>promote</h3>
<div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="TxnType.html" title="enum class in org.apache.jena.query">TxnType</a></span>&nbsp;<span class="element-name">promote</span><wbr><span class="parameters">(<a href="../sparql/core/Transactional.Promote.html" title="enum class in org.apache.jena.sparql.core">Transactional.Promote</a>&nbsp;promoteMode)</span></div>
<div class="block">Convert a <code>TxnType</code> mode to <a href="ReadWrite.html" title="enum class in org.apache.jena.query"><code>ReadWrite</code></a> : "promote" not supported.</div>
</section>
</li>
</ul>
</section>
</li>
</ul>
</section>
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