57 lines
1.9 KiB
PHP
57 lines
1.9 KiB
PHP
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<?php ?>
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Doctrine supports transaction savepoints. This means you can set named transactions and have them nested.
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<br \><br \>
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The Doctrine_Transaction::beginTransaction(<i>$savepoint</i>) sets a named transaction savepoint with a name of <i>$savepoint</i>.
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If the current transaction has a savepoint with the same name, the old savepoint is deleted and a new one is set.
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<br \><br \>
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<?php
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renderCode("<?php
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try {
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\$conn->beginTransaction();
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// do some operations here
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// creates a new savepoint called mysavepoint
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\$conn->beginTransaction('mysavepoint');
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try {
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// do some operations here
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\$conn->commit('mysavepoint');
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} catch(Exception \$e) {
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\$conn->rollback('mysavepoint');
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}
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\$conn->commit();
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} catch(Exception \$e) {
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\$conn->rollback();
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}
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?>");
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?>
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<br \><br \>
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The Doctrine_Transaction::rollback(<i>$savepoint</i>) rolls back a transaction to the named savepoint.
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Modifications that the current transaction made to rows after the savepoint was set are undone in the rollback.
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NOTE: Mysql, for example, does not release the row locks that were stored in memory after the savepoint.
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<br \><br \>
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Savepoints that were set at a later time than the named savepoint are deleted.
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<br \><br \>
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The Doctrine_Transaction::commit(<i>$savepoint</i>) removes the named savepoint from the set of savepoints of the current transaction.
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<br \><br \>
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All savepoints of the current transaction are deleted if you execute a commit or rollback is being called without savepoint name parameter.
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<?php
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renderCode("<?php
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try {
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\$conn->beginTransaction();
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// do some operations here
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// creates a new savepoint called mysavepoint
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\$conn->beginTransaction('mysavepoint');
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// do some operations here
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\$conn->commit(); // deletes all savepoints
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} catch(Exception \$e) {
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\$conn->rollback(); // deletes all savepoints
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}
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?>");
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?>
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