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| <li>Summary: </li> |
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| <div class="sub-title"><span class="module-label-in-type">Module</span> <a href="../../../../../module-summary.html">org.apache.jena.arq</a></div> |
| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.jena.sparql.core</a></div> |
| <h1 title="Class DatasetGraphNull" class="title">Class DatasetGraphNull</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="DatasetGraphBase.html" title="class in org.apache.jena.sparql.core">org.apache.jena.sparql.core.DatasetGraphBase</a> |
| <div class="inheritance"><a href="DatasetGraphBaseFind.html" title="class in org.apache.jena.sparql.core">org.apache.jena.sparql.core.DatasetGraphBaseFind</a> |
| <div class="inheritance">org.apache.jena.sparql.core.DatasetGraphNull</div> |
| </div> |
| </div> |
| </div> |
| <section class="class-description" id="class-description"> |
| <dl class="notes"> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><code>org.apache.jena.atlas.lib.Closeable</code>, <code><a href="DatasetGraph.html" title="interface in org.apache.jena.sparql.core">DatasetGraph</a></code>, <code><a href="Transactional.html" title="interface in org.apache.jena.sparql.core">Transactional</a></code></dd> |
| </dl> |
| <dl class="notes"> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><code><a href="DatasetGraphSink.html" title="class in org.apache.jena.sparql.core">DatasetGraphSink</a></code>, <code><a href="DatasetGraphZero.html" title="class in org.apache.jena.sparql.core">DatasetGraphZero</a></code></dd> |
| </dl> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public abstract class </span><span class="element-name type-name-label">DatasetGraphNull</span> |
| <span class="extends-implements">extends <a href="DatasetGraphBaseFind.html" title="class in org.apache.jena.sparql.core">DatasetGraphBaseFind</a></span></div> |
| <div class="block">A <a href="DatasetGraph.html" title="interface in org.apache.jena.sparql.core"><code>DatasetGraph</code></a> class for support of <a href="DatasetGraph.html" title="interface in org.apache.jena.sparql.core"><code>DatasetGraphs</code></a> that do nothing. |
| <ul> |
| <li>No named graphs. |
| <li>Empty default graph. |
| <li>Empty union graph. |
| <li>No update. (<a href="DatasetGraphSink.html" title="class in org.apache.jena.sparql.core"><code>DatasetGraphSink</code></a> overrides this) |
| </ul></div> |
| <dl class="notes"> |
| <dt>See Also:</dt> |
| <dd> |
| <ul class="see-list"> |
| <li><a href="DatasetGraphSink.html" title="class in org.apache.jena.sparql.core"><code>DatasetGraphSink</code></a></li> |
| <li><a href="DatasetGraphZero.html" title="class in org.apache.jena.sparql.core"><code>DatasetGraphZero</code></a></li> |
| </ul> |
| </dd> |
| </dl> |
| </section> |
| <section class="summary"> |
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| <!-- ======== NESTED CLASS SUMMARY ======== --> |
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| <h2>Nested Class Summary</h2> |
| <div class="inherited-list"> |
| <h2 id="nested-classes-inherited-from-class-org.apache.jena.sparql.core.Transactional">Nested classes/interfaces inherited from interface org.apache.jena.sparql.core.<a href="Transactional.html" title="interface in org.apache.jena.sparql.core">Transactional</a></h2> |
| <code><a href="Transactional.Promote.html" title="enum class in org.apache.jena.sparql.core">Transactional.Promote</a></code></div> |
| </section> |
| </li> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <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-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-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#abort()" class="member-name-link">abort</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Abort a transaction - finish the transaction and undo any changes (if a "write" transaction)</div> |
| </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="#add(org.apache.jena.sparql.core.Quad)" class="member-name-link">add</a><wbr>(<a href="Quad.html" title="class in org.apache.jena.sparql.core">Quad</a> quad)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Add a quad</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#addGraph(org.apache.jena.graph.Node,org.apache.jena.graph.Graph)" class="member-name-link">addGraph</a><wbr>(org.apache.jena.graph.Node graphName, |
| org.apache.jena.graph.Graph graph)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Add the given graph to the dataset.</div> |
| </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="#begin()" class="member-name-link">begin</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Start a transaction which is READ mode and which will switch to WRITE if an update |
| is attempted but only if no intermediate transaction has performed an update.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#begin(org.apache.jena.query.TxnType)" class="member-name-link">begin</a><wbr>(<a href="../../query/TxnType.html" title="enum class in org.apache.jena.query">TxnType</a> txnType)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Start a transaction.<br/> |
| READ or WRITE transactions start in that state and do not change for the |
| lifetime of the transaction.</div> |
| </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="#commit()" class="member-name-link">commit</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Commit a transaction - finish the transaction and make any changes permanent (if a "write" transaction)</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#delete(org.apache.jena.sparql.core.Quad)" class="member-name-link">delete</a><wbr>(<a href="Quad.html" title="class in org.apache.jena.sparql.core">Quad</a> quad)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Delete a quad</div> |
| </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="#deleteAny(org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node)" class="member-name-link">deleteAny</a><wbr>(org.apache.jena.graph.Node g, |
| org.apache.jena.graph.Node s, |
| org.apache.jena.graph.Node p, |
| org.apache.jena.graph.Node o)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Delete any quads matching the pattern</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#end()" class="member-name-link">end</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Finish the transaction - if a write transaction and commit() has not been called, then abort</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>org.apache.jena.graph.Graph</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getDefaultGraph()" class="member-name-link">getDefaultGraph</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Get the default graph as a Jena Graph</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>org.apache.jena.graph.Graph</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getGraph(org.apache.jena.graph.Node)" class="member-name-link">getGraph</a><wbr>(org.apache.jena.graph.Node graphNode)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Get the graph named by graphNode : returns null when there is no such graph.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>org.apache.jena.graph.Graph</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getUnionGraph()" class="member-name-link">getUnionGraph</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Return a <code>Graph</code> that is the union of all named graphs in this dataset.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#isInTransaction()" class="member-name-link">isInTransaction</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Say whether inside a transaction.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Iterator.html" title="class or interface in java.util" class="external-link">Iterator</a><org.apache.jena.graph.Node></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#listGraphNodes()" class="member-name-link">listGraphNodes</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Iterate over all names of named graphs</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#promote(org.apache.jena.sparql.core.Transactional.Promote)" class="member-name-link">promote</a><wbr>(<a href="Transactional.Promote.html" title="enum class in org.apache.jena.sparql.core">Transactional.Promote</a> txnType)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Attempt to promote a transaction from "read" mode to "write" and the transaction.</div> |
| </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="#removeGraph(org.apache.jena.graph.Node)" class="member-name-link">removeGraph</a><wbr>(org.apache.jena.graph.Node graphName)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Remove all data associated with the named graph.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#supportsTransactionAbort()" class="member-name-link">supportsTransactionAbort</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Declare whether <a href="Transactional.html#abort()"><code>Transactional.abort()</code></a> is supported.</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="#supportsTransactions()" class="member-name-link">supportsTransactions</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">A <code>DatasetGraph</code> supports transactions if it provides <a href="Transactional.html#begin()"><code>Transactional.begin()</code></a>/ |
| <a href="Transactional.html#commit()"><code>Transactional.commit()</code></a>/<a href="Transactional.html#end()"><code>Transactional.end()</code></a>.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../../query/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-tab2 method-summary-table-tab4"><code><a href="#transactionMode()" class="member-name-link">transactionMode</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Return the current mode of the transaction - "read" or "write".</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../../query/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-tab2 method-summary-table-tab4"><code><a href="#transactionType()" class="member-name-link">transactionType</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Return the transaction type used in <code>begin(TxnType)</code>.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.jena.sparql.core.DatasetGraphBaseFind">Methods inherited from class org.apache.jena.sparql.core.<a href="DatasetGraphBaseFind.html" title="class in org.apache.jena.sparql.core">DatasetGraphBaseFind</a></h3> |
| <code><a href="DatasetGraphBaseFind.html#find(org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node)">find</a>, <a href="DatasetGraphBaseFind.html#findInUnionGraph(org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node)">findInUnionGraph</a>, <a href="DatasetGraphBaseFind.html#findNG(org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node)">findNG</a>, <a href="DatasetGraphBaseFind.html#findQuadsInUnionGraph(org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node)">findQuadsInUnionGraph</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.jena.sparql.core.DatasetGraphBase">Methods inherited from class org.apache.jena.sparql.core.<a href="DatasetGraphBase.html" title="class in org.apache.jena.sparql.core">DatasetGraphBase</a></h3> |
| <code><a href="DatasetGraphBase.html#add(org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node)">add</a>, <a href="DatasetGraphBase.html#clear()">clear</a>, <a href="DatasetGraphBase.html#close()">close</a>, <a href="DatasetGraphBase.html#contains(org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node)">contains</a>, <a href="DatasetGraphBase.html#contains(org.apache.jena.sparql.core.Quad)">contains</a>, <a href="DatasetGraphBase.html#containsGraph(org.apache.jena.graph.Node)">containsGraph</a>, <a href="DatasetGraphBase.html#delete(org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node)">delete</a>, <a href="DatasetGraphBase.html#deleteAny(org.apache.jena.sparql.core.DatasetGraph,org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node)">deleteAny</a>, <a href="DatasetGraphBase.html#find()">find</a>, <a href="DatasetGraphBase.html#find(org.apache.jena.sparql.core.Quad)">find</a>, <a href="DatasetGraphBase.html#getContext()">getContext</a>, <a href="DatasetGraphBase.html#getLock()">getLock</a>, <a href="DatasetGraphBase.html#isEmpty()">isEmpty</a>, <a href="DatasetGraphBase.html#size()">size</a>, <a href="DatasetGraphBase.html#toString()">toString</a></code></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#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#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#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> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.jena.sparql.core.DatasetGraph">Methods inherited from interface org.apache.jena.sparql.core.<a href="DatasetGraph.html" title="interface in org.apache.jena.sparql.core">DatasetGraph</a></h3> |
| <code><a href="DatasetGraph.html#addAll(org.apache.jena.sparql.core.DatasetGraph)">addAll</a>, <a href="DatasetGraph.html#prefixes()">prefixes</a>, <a href="DatasetGraph.html#stream()">stream</a>, <a href="DatasetGraph.html#stream(org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node)">stream</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.jena.sparql.core.Transactional">Methods inherited from interface org.apache.jena.sparql.core.<a href="Transactional.html" title="interface in org.apache.jena.sparql.core">Transactional</a></h3> |
| <code><a href="Transactional.html#begin(org.apache.jena.query.ReadWrite)">begin</a>, <a href="Transactional.html#calc(org.apache.jena.query.TxnType,java.util.function.Supplier)">calc</a>, <a href="Transactional.html#calculate(java.util.function.Supplier)">calculate</a>, <a href="Transactional.html#calculateRead(java.util.function.Supplier)">calculateRead</a>, <a href="Transactional.html#calculateWrite(java.util.function.Supplier)">calculateWrite</a>, <a href="Transactional.html#exec(org.apache.jena.query.TxnType,java.lang.Runnable)">exec</a>, <a href="Transactional.html#execute(java.lang.Runnable)">execute</a>, <a href="Transactional.html#executeRead(java.lang.Runnable)">executeRead</a>, <a href="Transactional.html#executeWrite(java.lang.Runnable)">executeWrite</a>, <a href="Transactional.html#promote()">promote</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method-detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="begin()"> |
| <h3>begin</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">begin</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="Transactional.html#begin()">Transactional</a></code></span></div> |
| <div class="block">Start a transaction which is READ mode and which will switch to WRITE if an update |
| is attempted but only if no intermediate transaction has performed an update. |
| <p> |
| See <a href="Transactional.html#begin(org.apache.jena.query.TxnType)"><code>Transactional.begin(TxnType)</code></a> for more details an options. |
| <p> |
| May not be implemented. See <a href="Transactional.html#begin(org.apache.jena.query.ReadWrite)"><code>Transactional.begin(ReadWrite)</code></a> is guaranteed to be provided.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="begin(org.apache.jena.query.TxnType)"> |
| <h3>begin</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">begin</span><wbr><span class="parameters">(<a href="../../query/TxnType.html" title="enum class in org.apache.jena.query">TxnType</a> txnType)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="Transactional.html#begin(org.apache.jena.query.TxnType)">Transactional</a></code></span></div> |
| <div class="block">Start a transaction.<br/> |
| READ or WRITE transactions start in that state and do not change for the |
| lifetime of the transaction. |
| <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 an |
| update is attempted and if the dataset has not been changed by another write |
| transaction. See also <a href="Transactional.html#promote()"><code>Transactional.promote()</code></a>. |
| |
| <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 change 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. |
| <p> |
| This operation is optional and some implementations may throw |
| a <a href="../JenaTransactionException.html" title="class in org.apache.jena.sparql"><code>JenaTransactionException</code></a> exception for some or all <a href="../../query/TxnType.html" title="enum class in org.apache.jena.query"><code>TxnType</code></a> values. |
| <p> |
| See <a href="Transactional.html#begin(org.apache.jena.query.ReadWrite)"><code>Transactional.begin(ReadWrite)</code></a> for a form that is required of implementations.</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</span> <span class="return-type">boolean</span> <span class="element-name">promote</span><wbr><span class="parameters">(<a href="Transactional.Promote.html" title="enum class in org.apache.jena.sparql.core">Transactional.Promote</a> txnType)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="Transactional.html#promote(org.apache.jena.sparql.core.Transactional.Promote)">Transactional</a></code></span></div> |
| <div class="block">Attempt to promote a transaction from "read" mode to "write" and the transaction. This |
| method allows the form of promotion to be specified. The transaction must not have been started |
| with <code>READ</code>, which is read-only. |
| <p> |
| An argument of <code>READ_PROMOTE</code> treats the promotion as if the transaction was started |
| with <code>READ_PROMOTE</code> (any other writer commiting since the transaction started |
| blocks promotion) and <code>READ_COMMITTED_PROMOTE</code> treats the promotion as if the transaction was started |
| with <code>READ_COMMITTED_PROMOTE</code> (intemediate writer commits become visible). |
| <p> |
| Returns "true" if the transaction is in write mode after the call. The method |
| always succeeds of the transaction is already "write". |
| <p> |
| This method returns true if a <code>READ_PROMOTE</code> or |
| <code>READ_COMMITTED_PROMOTE</code> is promoted. |
| <p> |
| This method returns false if a <code>READ_PROMOTE</code> can't be promoted - the |
| transaction is still valid and in "read" mode. |
| <p> |
| This method throws an exception if there is an attempt to promote a <code>READ</code> |
| transaction.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="commit()"> |
| <h3>commit</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">commit</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="Transactional.html#commit()">Transactional</a></code></span></div> |
| <div class="block">Commit a transaction - finish the transaction and make any changes permanent (if a "write" transaction)</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="abort()"> |
| <h3>abort</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">abort</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="Transactional.html#abort()">Transactional</a></code></span></div> |
| <div class="block">Abort a transaction - finish the transaction and undo any changes (if a "write" transaction)</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="isInTransaction()"> |
| <h3>isInTransaction</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">boolean</span> <span class="element-name">isInTransaction</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="Transactional.html#isInTransaction()">Transactional</a></code></span></div> |
| <div class="block">Say whether inside a transaction.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="end()"> |
| <h3>end</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">end</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="Transactional.html#end()">Transactional</a></code></span></div> |
| <div class="block">Finish the transaction - if a write transaction and commit() has not been called, then abort</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="transactionMode()"> |
| <h3>transactionMode</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="../../query/ReadWrite.html" title="enum class in org.apache.jena.query">ReadWrite</a></span> <span class="element-name">transactionMode</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="Transactional.html#transactionMode()">Transactional</a></code></span></div> |
| <div class="block">Return the current mode of the transaction - "read" or "write". |
| If the caller is not in a transaction, this method returns null.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="transactionType()"> |
| <h3>transactionType</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="../../query/TxnType.html" title="enum class in org.apache.jena.query">TxnType</a></span> <span class="element-name">transactionType</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="Transactional.html#transactionType()">Transactional</a></code></span></div> |
| <div class="block">Return the transaction type used in <code>begin(TxnType)</code>. |
| If the caller is not in a transaction, this method returns null.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="supportsTransactions()"> |
| <h3>supportsTransactions</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">boolean</span> <span class="element-name">supportsTransactions</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="DatasetGraph.html#supportsTransactions()">DatasetGraph</a></code></span></div> |
| <div class="block">A <code>DatasetGraph</code> supports transactions if it provides <a href="Transactional.html#begin()"><code>Transactional.begin()</code></a>/ |
| <a href="Transactional.html#commit()"><code>Transactional.commit()</code></a>/<a href="Transactional.html#end()"><code>Transactional.end()</code></a>. The core storage <code>DatasetGraph</code>s |
| provide fully serialized transactions. A <code>DatasetGraph</code> that provides |
| functionality across independent systems can not provide such strong guarantees. |
| For example, it may use MRSW locking and some isolation control. |
| Specifically, it would not necessarily provide <a href="Transactional.html#abort()"><code>Transactional.abort()</code></a>. |
| <p> |
| See <a href="DatasetGraph.html#supportsTransactionAbort()"><code>DatasetGraph.supportsTransactionAbort()</code></a> for <a href="Transactional.html#abort()"><code>Transactional.abort()</code></a>. |
| In addition, check details of a specific implementation.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="supportsTransactionAbort()"> |
| <h3>supportsTransactionAbort</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">boolean</span> <span class="element-name">supportsTransactionAbort</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="DatasetGraph.html#supportsTransactionAbort()">DatasetGraph</a></code></span></div> |
| <div class="block">Declare whether <a href="Transactional.html#abort()"><code>Transactional.abort()</code></a> is supported. |
| This goes along with clearing up after exceptions inside application transaction code.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="listGraphNodes()"> |
| <h3>listGraphNodes</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Iterator.html" title="class or interface in java.util" class="external-link">Iterator</a><org.apache.jena.graph.Node></span> <span class="element-name">listGraphNodes</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="DatasetGraph.html#listGraphNodes()">DatasetGraph</a></code></span></div> |
| <div class="block">Iterate over all names of named graphs</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getDefaultGraph()"> |
| <h3>getDefaultGraph</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">org.apache.jena.graph.Graph</span> <span class="element-name">getDefaultGraph</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="DatasetGraph.html#getDefaultGraph()">DatasetGraph</a></code></span></div> |
| <div class="block">Get the default graph as a Jena Graph</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="DatasetGraph.html#getDefaultGraph()">getDefaultGraph</a></code> in interface <code><a href="DatasetGraph.html" title="interface in org.apache.jena.sparql.core">DatasetGraph</a></code></dd> |
| <dt>Specified by:</dt> |
| <dd><code><a href="DatasetGraphBase.html#getDefaultGraph()">getDefaultGraph</a></code> in class <code><a href="DatasetGraphBase.html" title="class in org.apache.jena.sparql.core">DatasetGraphBase</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getUnionGraph()"> |
| <h3>getUnionGraph</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">org.apache.jena.graph.Graph</span> <span class="element-name">getUnionGraph</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="DatasetGraph.html#getUnionGraph()">DatasetGraph</a></code></span></div> |
| <div class="block">Return a <code>Graph</code> that is the union of all named graphs in this dataset. This |
| union graph is read-only (its prefix mapping in the current JVM may be changed but |
| that may not persist).</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="DatasetGraph.html#getUnionGraph()">getUnionGraph</a></code> in interface <code><a href="DatasetGraph.html" title="interface in org.apache.jena.sparql.core">DatasetGraph</a></code></dd> |
| <dt>Overrides:</dt> |
| <dd><code><a href="DatasetGraphBase.html#getUnionGraph()">getUnionGraph</a></code> in class <code><a href="DatasetGraphBase.html" title="class in org.apache.jena.sparql.core">DatasetGraphBase</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getGraph(org.apache.jena.graph.Node)"> |
| <h3>getGraph</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">org.apache.jena.graph.Graph</span> <span class="element-name">getGraph</span><wbr><span class="parameters">(org.apache.jena.graph.Node graphNode)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="DatasetGraph.html#getGraph(org.apache.jena.graph.Node)">DatasetGraph</a></code></span></div> |
| <div class="block">Get the graph named by graphNode : returns null when there is no such graph. |
| NB Whether a dataset contains a graph if there are no triples is not defined - see the specific implementation. |
| Some datasets are "open" - they have all graphs even if no triples.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="DatasetGraph.html#getGraph(org.apache.jena.graph.Node)">getGraph</a></code> in interface <code><a href="DatasetGraph.html" title="interface in org.apache.jena.sparql.core">DatasetGraph</a></code></dd> |
| <dt>Specified by:</dt> |
| <dd><code><a href="DatasetGraphBase.html#getGraph(org.apache.jena.graph.Node)">getGraph</a></code> in class <code><a href="DatasetGraphBase.html" title="class in org.apache.jena.sparql.core">DatasetGraphBase</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="add(org.apache.jena.sparql.core.Quad)"> |
| <h3>add</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">add</span><wbr><span class="parameters">(<a href="Quad.html" title="class in org.apache.jena.sparql.core">Quad</a> quad)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="DatasetGraph.html#add(org.apache.jena.sparql.core.Quad)">DatasetGraph</a></code></span></div> |
| <div class="block">Add a quad</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="DatasetGraph.html#add(org.apache.jena.sparql.core.Quad)">add</a></code> in interface <code><a href="DatasetGraph.html" title="interface in org.apache.jena.sparql.core">DatasetGraph</a></code></dd> |
| <dt>Overrides:</dt> |
| <dd><code><a href="DatasetGraphBase.html#add(org.apache.jena.sparql.core.Quad)">add</a></code> in class <code><a href="DatasetGraphBase.html" title="class in org.apache.jena.sparql.core">DatasetGraphBase</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="delete(org.apache.jena.sparql.core.Quad)"> |
| <h3>delete</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">delete</span><wbr><span class="parameters">(<a href="Quad.html" title="class in org.apache.jena.sparql.core">Quad</a> quad)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="DatasetGraph.html#delete(org.apache.jena.sparql.core.Quad)">DatasetGraph</a></code></span></div> |
| <div class="block">Delete a quad</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="DatasetGraph.html#delete(org.apache.jena.sparql.core.Quad)">delete</a></code> in interface <code><a href="DatasetGraph.html" title="interface in org.apache.jena.sparql.core">DatasetGraph</a></code></dd> |
| <dt>Overrides:</dt> |
| <dd><code><a href="DatasetGraphBase.html#delete(org.apache.jena.sparql.core.Quad)">delete</a></code> in class <code><a href="DatasetGraphBase.html" title="class in org.apache.jena.sparql.core">DatasetGraphBase</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="deleteAny(org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node)"> |
| <h3>deleteAny</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">deleteAny</span><wbr><span class="parameters">(org.apache.jena.graph.Node g, |
| org.apache.jena.graph.Node s, |
| org.apache.jena.graph.Node p, |
| org.apache.jena.graph.Node o)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="DatasetGraph.html#deleteAny(org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node)">DatasetGraph</a></code></span></div> |
| <div class="block">Delete any quads matching the pattern</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="DatasetGraph.html#deleteAny(org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node)">deleteAny</a></code> in interface <code><a href="DatasetGraph.html" title="interface in org.apache.jena.sparql.core">DatasetGraph</a></code></dd> |
| <dt>Overrides:</dt> |
| <dd><code><a href="DatasetGraphBase.html#deleteAny(org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node,org.apache.jena.graph.Node)">deleteAny</a></code> in class <code><a href="DatasetGraphBase.html" title="class in org.apache.jena.sparql.core">DatasetGraphBase</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="addGraph(org.apache.jena.graph.Node,org.apache.jena.graph.Graph)"> |
| <h3>addGraph</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">addGraph</span><wbr><span class="parameters">(org.apache.jena.graph.Node graphName, |
| org.apache.jena.graph.Graph graph)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="DatasetGraph.html#addGraph(org.apache.jena.graph.Node,org.apache.jena.graph.Graph)">DatasetGraph</a></code></span></div> |
| <div class="block">Add the given graph to the dataset. |
| <em>Replaces</em> any existing data for the named graph; to add data, |
| get the graph and add triples to it, or add quads to the dataset. |
| Do not assume that the same Java object is returned by <a href="DatasetGraph.html#getGraph(org.apache.jena.graph.Node)"><code>DatasetGraph.getGraph(org.apache.jena.graph.Node)</code></a></div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="DatasetGraph.html#addGraph(org.apache.jena.graph.Node,org.apache.jena.graph.Graph)">addGraph</a></code> in interface <code><a href="DatasetGraph.html" title="interface in org.apache.jena.sparql.core">DatasetGraph</a></code></dd> |
| <dt>Specified by:</dt> |
| <dd><code><a href="DatasetGraphBase.html#addGraph(org.apache.jena.graph.Node,org.apache.jena.graph.Graph)">addGraph</a></code> in class <code><a href="DatasetGraphBase.html" title="class in org.apache.jena.sparql.core">DatasetGraphBase</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="removeGraph(org.apache.jena.graph.Node)"> |
| <h3>removeGraph</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">removeGraph</span><wbr><span class="parameters">(org.apache.jena.graph.Node graphName)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="DatasetGraph.html#removeGraph(org.apache.jena.graph.Node)">DatasetGraph</a></code></span></div> |
| <div class="block">Remove all data associated with the named graph. |
| This will include prefixes associated with the graph.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="DatasetGraph.html#removeGraph(org.apache.jena.graph.Node)">removeGraph</a></code> in interface <code><a href="DatasetGraph.html" title="interface in org.apache.jena.sparql.core">DatasetGraph</a></code></dd> |
| <dt>Specified by:</dt> |
| <dd><code><a href="DatasetGraphBase.html#removeGraph(org.apache.jena.graph.Node)">removeGraph</a></code> in class <code><a href="DatasetGraphBase.html" title="class in org.apache.jena.sparql.core">DatasetGraphBase</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </section> |
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