mirror of
https://github.com/ebean-orm/ebean.git
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Change license to Apache2 and reformat
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rbygrave
+128
-147
@@ -1,147 +1,128 @@
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/**
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* Copyright (C) 2006 Robin Bygrave
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*
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* This file is part of Ebean.
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*
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* Ebean is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* Ebean is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Ebean; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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package com.avaje.ebeaninternal.server.transaction;
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import com.avaje.ebeaninternal.api.SpiTransaction;
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import com.avaje.ebeaninternal.server.transaction.TransactionMap.State;
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/**
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* Used by EbeanMgr to store its Transactions in a ThreadLocal. This way the
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* transaction objects don't have to passed around.
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*/
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public final class DefaultTransactionThreadLocal {
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private static ThreadLocal<TransactionMap> local = new ThreadLocal<TransactionMap>() {
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protected synchronized TransactionMap initialValue() {
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return new TransactionMap();
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}
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};
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/**
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* Not allowed.
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*/
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private DefaultTransactionThreadLocal() {
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}
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/**
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* Return the current TransactionState for a given serverName. This is for the
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* local thread of course.
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*/
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private static TransactionMap.State getState(String serverName) {
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return local.get().getStateWithCreate(serverName);
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}
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/**
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* Set a new Transaction for this serverName and Thread.
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*/
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public static void set(String serverName, SpiTransaction trans) {
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getState(serverName).set(trans);
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}
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/**
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* A mechanism to get the transaction out of the thread local by replacing it
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* with a 'proxy'.
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* <p>
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* Used for background fetching. Replaces the current transaction with a
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* 'dummy' transaction. The current transaction is given to the background
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* thread so it can continue the fetch.
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* </p>
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*/
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public static void replace(String serverName, SpiTransaction trans) {
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getState(serverName).replace(trans);
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}
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/**
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* Return the current Transaction for this serverName and Thread.
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*/
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public static SpiTransaction get(String serverName) {
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TransactionMap map = local.get();
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State state = map.getState(serverName);
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SpiTransaction t = (state == null) ? null : state.transaction;
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if (map.isEmpty()) {
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local.remove();
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}
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return t;
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}
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/**
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* Commit the current transaction.
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*/
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public static void commit(String serverName) {
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TransactionMap map = local.get();
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State state = map.removeState(serverName);
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if (state == null) {
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throw new IllegalStateException("No current transaction for [" + serverName + "]");
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}
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state.commit();
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if (map.isEmpty()) {
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local.remove();
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}
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}
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/**
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* Rollback the current transaction.
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*/
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public static void rollback(String serverName) {
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TransactionMap map = local.get();
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State state = map.removeState(serverName);
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if (state == null) {
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throw new IllegalStateException("No current transaction for [" + serverName + "]");
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}
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state.rollback();
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if (map.isEmpty()) {
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local.remove();
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}
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}
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/**
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* If the transaction has not been committed then roll it back.
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* <p>
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* Designed to be put in a finally block instead of a rollback() in each catch
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* block.
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*
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* <pre>
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* Ebean.beingTransaction();
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* try {
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* // ... perform some actions in a single transaction
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*
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* Ebean.commitTransaction();
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*
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* } finally {
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* // ensure transaction ended. If some error occurred then rollback()
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* Ebean.endTransaction();
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* }
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* </pre>
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*
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* </p>
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*/
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public static void end(String serverName) {
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TransactionMap map = local.get();
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State state = map.removeState(serverName);
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if (state != null) {
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state.end();
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}
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if (map.isEmpty()) {
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local.remove();
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}
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}
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}
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package com.avaje.ebeaninternal.server.transaction;
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import com.avaje.ebeaninternal.api.SpiTransaction;
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import com.avaje.ebeaninternal.server.transaction.TransactionMap.State;
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/**
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* Used by EbeanMgr to store its Transactions in a ThreadLocal. This way the
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* transaction objects don't have to passed around.
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*/
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public final class DefaultTransactionThreadLocal {
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private static ThreadLocal<TransactionMap> local = new ThreadLocal<TransactionMap>() {
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protected synchronized TransactionMap initialValue() {
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return new TransactionMap();
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}
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};
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/**
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* Not allowed.
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*/
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private DefaultTransactionThreadLocal() {
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}
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/**
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* Return the current TransactionState for a given serverName. This is for the
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* local thread of course.
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*/
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private static TransactionMap.State getState(String serverName) {
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return local.get().getStateWithCreate(serverName);
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}
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/**
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* Set a new Transaction for this serverName and Thread.
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*/
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public static void set(String serverName, SpiTransaction trans) {
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getState(serverName).set(trans);
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}
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/**
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* A mechanism to get the transaction out of the thread local by replacing it
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* with a 'proxy'.
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* <p>
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* Used for background fetching. Replaces the current transaction with a
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* 'dummy' transaction. The current transaction is given to the background
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* thread so it can continue the fetch.
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* </p>
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*/
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public static void replace(String serverName, SpiTransaction trans) {
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getState(serverName).replace(trans);
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}
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/**
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* Return the current Transaction for this serverName and Thread.
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*/
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public static SpiTransaction get(String serverName) {
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TransactionMap map = local.get();
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State state = map.getState(serverName);
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SpiTransaction t = (state == null) ? null : state.transaction;
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if (map.isEmpty()) {
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local.remove();
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}
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return t;
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}
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/**
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* Commit the current transaction.
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*/
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public static void commit(String serverName) {
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TransactionMap map = local.get();
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State state = map.removeState(serverName);
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if (state == null) {
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throw new IllegalStateException("No current transaction for [" + serverName + "]");
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}
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state.commit();
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if (map.isEmpty()) {
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local.remove();
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}
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}
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/**
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* Rollback the current transaction.
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*/
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public static void rollback(String serverName) {
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TransactionMap map = local.get();
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State state = map.removeState(serverName);
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if (state == null) {
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throw new IllegalStateException("No current transaction for [" + serverName + "]");
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}
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state.rollback();
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if (map.isEmpty()) {
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local.remove();
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}
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}
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/**
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* If the transaction has not been committed then roll it back.
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* <p>
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* Designed to be put in a finally block instead of a rollback() in each catch
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* block.
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*
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* <pre>
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* Ebean.beingTransaction();
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* try {
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* // ... perform some actions in a single transaction
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*
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* Ebean.commitTransaction();
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*
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* } finally {
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* // ensure transaction ended. If some error occurred then rollback()
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* Ebean.endTransaction();
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* }
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* </pre>
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*
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* </p>
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*/
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public static void end(String serverName) {
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TransactionMap map = local.get();
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State state = map.removeState(serverName);
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if (state != null) {
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state.end();
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}
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if (map.isEmpty()) {
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local.remove();
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}
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}
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}
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