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608 lines
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db
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0.11.0
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<a href="../DB/SavePointTransaction.html">SavePointTransaction</a>
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<li class="parent " data-id="db/DB/SessionMethods" data-name="db::sessionmethods(session, stmt)">
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<a href="../DB/SessionMethods.html">SessionMethods</a>
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<li class=" " data-id="db/DB/SessionMethods/PreparedQuery" data-name="db::sessionmethods::preparedquery(session, stmt)">
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</li>
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<li class=" " data-id="db/DB/TopLevelTransaction" data-name="db::topleveltransaction">
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<a href="../DB/TopLevelTransaction.html">TopLevelTransaction</a>
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<li class=" current" data-id="db/DB/Transaction" data-name="db::transaction">
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<a href="../DB/Transaction.html">Transaction</a>
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<div class="main-content">
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<h1 class="type-name">
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<span class="kind">abstract class</span> DB::Transaction
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</h1>
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<ul class="superclass-hierarchy"><li class="superclass"><a href="../DB/Transaction.html">DB::Transaction</a></li><li class="superclass">Reference</li><li class="superclass">Object</li></ul>
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<h2>
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<a id="overview" class="anchor" href="#overview">
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<svg class="octicon-link" aria-hidden="true">
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<use href="#octicon-link"/>
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</svg>
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</a>
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Overview
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</h2>
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<p>Transactions should be started from <code>DB#transaction</code>, <code>Connection#transaction</code>
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or <code><a href="../DB/Connection.html#begin_transaction%3ATransaction-instance-method">Connection#begin_transaction</a></code>.</p>
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<p>Use <code><a href="../DB/Transaction.html#connection%3AConnection-instance-method">Transaction#connection</a></code> to submit statements to the database.</p>
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<p>Use <code><a href="../DB/Transaction.html#commit-instance-method">Transaction#commit</a></code> or <code><a href="../DB/Transaction.html#rollback-instance-method">Transaction#rollback</a></code> to close the ongoing transaction
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explicitly. Or refer to <code><a href="../DB/BeginTransaction.html#transaction%28%26%3ATransaction-%3ET%29%3AT%3FforallT-instance-method">BeginTransaction#transaction</a></code> for documentation on how to
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use <code>#transaction(&block)</code> methods in <code><a href="../DB.html">DB</a></code> and <code><a href="../DB/Connection.html">Connection</a></code>.</p>
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<p>Nested transactions are supported by using sql <code>SAVEPOINT</code>. To start a nested
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transaction use <code>Transaction#transaction</code> or <code>Transaction#begin_transaction</code>.</p>
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<h2>
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<a id="included-modules" class="anchor" href="#included-modules">
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</svg>
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Included Modules
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</h2>
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<ul class="other-types-list">
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<li class="other-type"><a href="../DB/BeginTransaction.html">DB::BeginTransaction</a></li>
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<li class="other-type"><a href="../DB/Disposable.html">DB::Disposable</a></li>
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</ul>
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<h2>
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<a id="direct-known-subclasses" class="anchor" href="#direct-known-subclasses">
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<svg class="octicon-link" aria-hidden="true">
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</svg>
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</a>
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Direct Known Subclasses
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</h2>
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<ul class="other-types-list">
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<li class="other-type"><a href="../DB/SavePointTransaction.html">DB::SavePointTransaction</a></li>
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<li class="other-type"><a href="../DB/TopLevelTransaction.html">DB::TopLevelTransaction</a></li>
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</ul>
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<h2>
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<a id="defined-in" class="anchor" href="#defined-in">
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<svg class="octicon-link" aria-hidden="true">
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</svg>
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</a>
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Defined in:
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</h2>
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<a href="https://github.com/crystal-lang/crystal-db/blob/v0.11.0/src/db/transaction.cr#L14" target="_blank">
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db/transaction.cr
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</a>
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<br/>
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<h2>
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<a id="instance-method-summary" class="anchor" href="#instance-method-summary">
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<svg class="octicon-link" aria-hidden="true">
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<use href="#octicon-link"/>
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</svg>
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</a>
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Instance Method Summary
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</h2>
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<ul class="list-summary">
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<li class="entry-summary">
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<a href="#commit-instance-method" class="signature"><strong>#commit</strong></a>
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<div class="summary"><p>commits the current transaction</p></div>
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</li>
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<li class="entry-summary">
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<a href="#connection%3AConnection-instance-method" class="signature"><strong>#connection</strong> : Connection</a>
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</li>
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<li class="entry-summary">
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<a href="#release_from_nested_transaction-instance-method" class="signature"><strong>#release_from_nested_transaction</strong></a>
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</li>
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<li class="entry-summary">
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<a href="#rollback-instance-method" class="signature"><strong>#rollback</strong></a>
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<div class="summary"><p>rollbacks the current transaction</p></div>
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</li>
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</ul>
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<div class="methods-inherited">
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<h3>Instance methods inherited from module <code><a href="../DB/BeginTransaction.html">DB::BeginTransaction</a></code></h3>
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<a href="../DB/BeginTransaction.html#begin_transaction%3ATransaction-instance-method" class="tooltip">
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<span>begin_transaction : Transaction</span>
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begin_transaction</a>,
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<a href="../DB/BeginTransaction.html#transaction%28%26%3ATransaction-%3ET%29%3AT%3FforallT-instance-method" class="tooltip">
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<span>transaction(& : Transaction -> T) : T? forall T</span>
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transaction</a>
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<h3>Instance methods inherited from module <code><a href="../DB/Disposable.html">DB::Disposable</a></code></h3>
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<a href="../DB/Disposable.html#close-instance-method" class="tooltip">
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<span>close</span>
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close</a>,
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<a href="../DB/Disposable.html#closed%3F-instance-method" class="tooltip">
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<span>closed?</span>
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closed?</a>
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</div>
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<h2>
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<a id="instance-method-detail" class="anchor" href="#instance-method-detail">
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<svg class="octicon-link" aria-hidden="true">
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<use href="#octicon-link"/>
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</svg>
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</a>
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Instance Method Detail
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</h2>
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<div class="entry-detail" id="commit-instance-method">
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<div class="signature">
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def <strong>commit</strong>
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<a class="method-permalink" href="#commit-instance-method">#</a>
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</div>
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<div class="doc">
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<p>commits the current transaction</p>
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</div>
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<br/>
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<div>
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[<a href="https://github.com/crystal-lang/crystal-db/blob/v0.11.0/src/db/transaction.cr#L21" target="_blank">View source</a>]
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</div>
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</div>
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<div class="entry-detail" id="connection:Connection-instance-method">
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<div class="signature">
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abstract
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def <strong>connection</strong> : <a href="../DB/Connection.html">Connection</a>
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<a class="method-permalink" href="#connection%3AConnection-instance-method">#</a>
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</div>
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<br/>
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<div>
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[<a href="https://github.com/crystal-lang/crystal-db/blob/v0.11.0/src/db/transaction.cr#L18" target="_blank">View source</a>]
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</div>
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</div>
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<div class="entry-detail" id="release_from_nested_transaction-instance-method">
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<div class="signature">
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abstract
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|
def <strong>release_from_nested_transaction</strong>
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<a class="method-permalink" href="#release_from_nested_transaction-instance-method">#</a>
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</div>
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<br/>
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<div>
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[<a href="https://github.com/crystal-lang/crystal-db/blob/v0.11.0/src/db/transaction.cr#L35" target="_blank">View source</a>]
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</div>
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</div>
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<div class="entry-detail" id="rollback-instance-method">
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<div class="signature">
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|
|
def <strong>rollback</strong>
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<a class="method-permalink" href="#rollback-instance-method">#</a>
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</div>
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<div class="doc">
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<p>rollbacks the current transaction</p>
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</div>
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<br/>
|
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<div>
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[<a href="https://github.com/crystal-lang/crystal-db/blob/v0.11.0/src/db/transaction.cr#L26" target="_blank">View source</a>]
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</div>
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</div>
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</div>
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</body>
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</html>
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