added

std/php/db/Transaction.hx

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2005, The haXe Project Contributors
+ * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   - Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   - Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE HAXE PROJECT CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE HAXE PROJECT CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ */
+package php.db;
+
+class Transaction {
+
+	public static function isDeadlock(e : Dynamic) {
+		return Std.is(e,String) && (~/Deadlock found/.match(e) || ~/Lock wait timeout/.match(e));
+	}
+
+	private static function runMainLoop(mainFun,logError,count) {
+		try {
+			mainFun();
+		} catch( e : Dynamic ) {
+			if( count > 0 && isDeadlock(e) ) {
+				Manager.cleanup();
+				Manager.cnx.rollback(); // should be already done, but in case...
+				Manager.cnx.startTransaction();
+				runMainLoop(mainFun,logError,count-1);
+				return;
+			}
+			if( logError == null ) {
+				Manager.cnx.rollback();
+				throw e;
+			}
+			logError(e); // should ROLLBACK if needed
+		}
+	}
+
+	public static function main( cnx, mainFun : Void -> Void, logError : Dynamic -> Void ) {
+		Manager.initialize();
+		Manager.cnx = cnx;
+		Manager.cnx.startTransaction();
+		runMainLoop(mainFun,logError,3);
+		try {
+			Manager.cnx.commit();
+		} catch( e : String ) {
+			// sqlite can have errors on commit
+			if( ~/Database is busy/.match(e) )
+				logError(e);
+		}
+		Manager.cnx.close();
+		Manager.cnx = null;
+		Manager.cleanup();
+	}
+
+}