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| <h2 title="Interface IgniteTransactions" class="title">Interface IgniteTransactions</h2> |
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| <pre>public interface <span class="strong">IgniteTransactions</span></pre> |
| <div class="block">Transactions facade provides ACID-compliant semantic when working with caches. You can |
| create a transaction when working with one cache or across multiple caches. Caches with |
| different cache modes, like <a href="../../../org/apache/ignite/cache/CacheMode.html#PARTITIONED"><code>PARTITIONED</code></a> or |
| <a href="../../../org/apache/ignite/cache/CacheMode.html#REPLICATED"><code>REPLICATED</code></a>, can also participate in the same transaction. |
| <p> |
| Transactions are <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang"><code>AutoCloseable</code></a>, so they will automatically rollback unless |
| explicitly committed. |
| <p> |
| Here is an example of a transaction: |
| <pre class="brush:java"> |
| try (Transaction tx = Ignition.ignite().transactions().txStart()) { |
| Account acct = cache.get(acctId); |
| |
| // Current balance. |
| double balance = acct.getBalance(); |
| |
| // Deposit $100 into account. |
| acct.setBalance(balance + 100); |
| |
| // Store updated account in cache. |
| cache.put(acctId, acct); |
| |
| tx.commit(); |
| } |
| </pre></div> |
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| <h3>Method Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span>Methods</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="../../../org/apache/ignite/transactions/TransactionMetrics.html" title="interface in org.apache.ignite.transactions">TransactionMetrics</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteTransactions.html#metrics()">metrics</a></strong>()</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteTransactions.html#resetMetrics()">resetMetrics</a></strong>()</code> |
| <div class="block">Resets transaction metrics.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="../../../org/apache/ignite/transactions/Transaction.html" title="interface in org.apache.ignite.transactions">Transaction</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteTransactions.html#tx()">tx</a></strong>()</code> |
| <div class="block">Gets transaction started by this thread or <code>null</code> if this thread does |
| not have a transaction.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="../../../org/apache/ignite/transactions/Transaction.html" title="interface in org.apache.ignite.transactions">Transaction</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteTransactions.html#txStart()">txStart</a></strong>()</code> |
| <div class="block">Starts transaction with default isolation, concurrency, timeout, and invalidation policy.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="../../../org/apache/ignite/transactions/Transaction.html" title="interface in org.apache.ignite.transactions">Transaction</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteTransactions.html#txStart(org.apache.ignite.transactions.TransactionConcurrency,%20org.apache.ignite.transactions.TransactionIsolation)">txStart</a></strong>(<a href="../../../org/apache/ignite/transactions/TransactionConcurrency.html" title="enum in org.apache.ignite.transactions">TransactionConcurrency</a> concurrency, |
| <a href="../../../org/apache/ignite/transactions/TransactionIsolation.html" title="enum in org.apache.ignite.transactions">TransactionIsolation</a> isolation)</code> |
| <div class="block">Starts new transaction with the specified concurrency and isolation.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="../../../org/apache/ignite/transactions/Transaction.html" title="interface in org.apache.ignite.transactions">Transaction</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteTransactions.html#txStart(org.apache.ignite.transactions.TransactionConcurrency,%20org.apache.ignite.transactions.TransactionIsolation,%20long,%20int)">txStart</a></strong>(<a href="../../../org/apache/ignite/transactions/TransactionConcurrency.html" title="enum in org.apache.ignite.transactions">TransactionConcurrency</a> concurrency, |
| <a href="../../../org/apache/ignite/transactions/TransactionIsolation.html" title="enum in org.apache.ignite.transactions">TransactionIsolation</a> isolation, |
| long timeout, |
| int txSize)</code> |
| <div class="block">Starts transaction with specified isolation, concurrency, timeout, invalidation flag, |
| and number of participating entries.</div> |
| </td> |
| </tr> |
| </table> |
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| </ul> |
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| <a name="txStart()"> |
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| <h4>txStart</h4> |
| <pre><a href="../../../org/apache/ignite/transactions/Transaction.html" title="interface in org.apache.ignite.transactions">Transaction</a> txStart() |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</a></pre> |
| <div class="block">Starts transaction with default isolation, concurrency, timeout, and invalidation policy. |
| All defaults are set in <a href="../../../org/apache/ignite/configuration/TransactionConfiguration.html" title="class in org.apache.ignite.configuration"><code>TransactionConfiguration</code></a> at startup.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>New transaction</dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</a></code> - If transaction is already started by this thread.</dd></dl> |
| </li> |
| </ul> |
| <a name="txStart(org.apache.ignite.transactions.TransactionConcurrency, org.apache.ignite.transactions.TransactionIsolation)"> |
| <!-- --> |
| </a> |
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| <h4>txStart</h4> |
| <pre><a href="../../../org/apache/ignite/transactions/Transaction.html" title="interface in org.apache.ignite.transactions">Transaction</a> txStart(<a href="../../../org/apache/ignite/transactions/TransactionConcurrency.html" title="enum in org.apache.ignite.transactions">TransactionConcurrency</a> concurrency, |
| <a href="../../../org/apache/ignite/transactions/TransactionIsolation.html" title="enum in org.apache.ignite.transactions">TransactionIsolation</a> isolation)</pre> |
| <div class="block">Starts new transaction with the specified concurrency and isolation.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>concurrency</code> - Concurrency.</dd><dd><code>isolation</code> - Isolation.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>New transaction.</dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</a></code> - If transaction is already started by this thread.</dd></dl> |
| </li> |
| </ul> |
| <a name="txStart(org.apache.ignite.transactions.TransactionConcurrency, org.apache.ignite.transactions.TransactionIsolation, long, int)"> |
| <!-- --> |
| </a> |
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| <h4>txStart</h4> |
| <pre><a href="../../../org/apache/ignite/transactions/Transaction.html" title="interface in org.apache.ignite.transactions">Transaction</a> txStart(<a href="../../../org/apache/ignite/transactions/TransactionConcurrency.html" title="enum in org.apache.ignite.transactions">TransactionConcurrency</a> concurrency, |
| <a href="../../../org/apache/ignite/transactions/TransactionIsolation.html" title="enum in org.apache.ignite.transactions">TransactionIsolation</a> isolation, |
| long timeout, |
| int txSize)</pre> |
| <div class="block">Starts transaction with specified isolation, concurrency, timeout, invalidation flag, |
| and number of participating entries.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>concurrency</code> - Concurrency.</dd><dd><code>isolation</code> - Isolation.</dd><dd><code>timeout</code> - Timeout.</dd><dd><code>txSize</code> - Number of entries participating in transaction (may be approximate).</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>New transaction.</dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</a></code> - If transaction is already started by this thread.</dd></dl> |
| </li> |
| </ul> |
| <a name="tx()"> |
| <!-- --> |
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| <h4>tx</h4> |
| <pre><a href="../../../org/apache/ignite/transactions/Transaction.html" title="interface in org.apache.ignite.transactions">Transaction</a> tx()</pre> |
| <div class="block">Gets transaction started by this thread or <code>null</code> if this thread does |
| not have a transaction.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Transaction started by this thread or <code>null</code> if this thread |
| does not have a transaction.</dd></dl> |
| </li> |
| </ul> |
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| <h4>metrics</h4> |
| <pre><a href="../../../org/apache/ignite/transactions/TransactionMetrics.html" title="interface in org.apache.ignite.transactions">TransactionMetrics</a> metrics()</pre> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Transaction metrics.</dd></dl> |
| </li> |
| </ul> |
| <a name="resetMetrics()"> |
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| <h4>resetMetrics</h4> |
| <pre>void resetMetrics()</pre> |
| <div class="block">Resets transaction metrics.</div> |
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| <p class="legalCopy"><small><table width="100%" border="0" cellspacing=0 cellpadding=0 style="padding: 5px"> <tr> <td> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <a target=_blank href="https://ignite.apache.org"><nobr>2015 Copyright © Apache Software Foundation</nobr></a> </td> </tr> </tbody> </table> </td> <td width="100%" align="right" valign="center"> <a href="https://twitter.com/ApacheIgnite" class="twitter-follow-button" data-show-count="false" data-size="large">Follow @ApacheIgnite</a> <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script> </td> </tr> <tr> <td colspan="2" valign="top" align="left"> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <b>Ignite Fabric</b> </td> <td>: ver. <strong>1.7.0</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>: August 1 2016 </td> </tr> </tbody> </table> </td> </tr> </table></small></p> |
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