Initial revision of NDB Cluster files

BitKeeper/etc/logging_ok: Logging to logging@openlogging.org accepted
2025-12-03 05:41:09 +03:00 · 2004-04-14 10:53:21 +02:00
parent 0ba6cb48d8
commit 6386c55cee
1835 changed files with 500032 additions and 0 deletions
--- a/ndb/examples/ndbapi_example2/ndbapi_example2.cpp
+++ b/ndb/examples/ndbapi_example2/ndbapi_example2.cpp
@@ -0,0 +1,110 @@
+/* Copyright (C) 2003 MySQL AB
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+//
+//  ndbapi_example2.cpp: Using asynchronous transactions in NDB API
+//
+//  Execute ndbapi_example1 to create the table "MYTABLENAME"
+//  before executing this program.
+// 
+//  Correct output from this program is:
+//
+//  Successful insert.
+//  Successful insert.
+
+#include <NdbApi.hpp>
+
+// Used for cout
+#include <iostream>
+
+#define APIERROR(error) \
+  { std::cout << "Error in " << __FILE__ << ", line:" << __LINE__ << ", code:" \
+              << error.code << ", msg: " << error.message << "." << std::endl; \
+    exit(-1); }
+
+static void callback(int result, NdbConnection* NdbObject, void* aObject);
+
+int main()
+{
+  Ndb* myNdb = new Ndb( "TEST_DB_2" );  // Object representing the database
+
+  NdbConnection*  myNdbConnection[2];   // For transactions
+  NdbOperation*   myNdbOperation;       // For operations
+  
+  /*******************************************
+   * Initialize NDB and wait until its ready *
+   *******************************************/
+  if (myNdb->init(2) == -1) {          // Want two parallel insert transactions
+    APIERROR(myNdb->getNdbError());
+    exit(-1);
+  }
+
+  if (myNdb->waitUntilReady(30) != 0) {
+    std::cout << "NDB was not ready within 30 secs." << std::endl;
+    exit(-1);
+  }
+
+  /******************************************************
+   * Insert (we do two insert transactions in parallel) *
+   ******************************************************/
+  for (int i = 0; i < 2; i++) {
+    myNdbConnection[i] = myNdb->startTransaction();
+    if (myNdbConnection[i] == NULL) APIERROR(myNdb->getNdbError());
+    
+    myNdbOperation = myNdbConnection[i]->getNdbOperation("MYTABLENAME");
+    // Error check. If error, then maybe table MYTABLENAME is not in database
+    if (myNdbOperation == NULL) APIERROR(myNdbConnection[i]->getNdbError());
+    
+    myNdbOperation->insertTuple();
+    myNdbOperation->equal("ATTR1", 20 + i);
+    myNdbOperation->setValue("ATTR2", 20 + i);
+    
+    // Prepare transaction (the transaction is NOT yet sent to NDB)
+    myNdbConnection[i]->executeAsynchPrepare(Commit, &callback, NULL);
+  }
+
+  // Send all transactions to NDB 
+  myNdb->sendPreparedTransactions(0);
+  
+  // Poll all transactions
+  myNdb->pollNdb(3000, 2);
+  
+  // Close all transactions
+  for (int i = 0; i < 2; i++) 
+    myNdb->closeTransaction(myNdbConnection[i]);
+
+  delete myNdb;
+}
+
+/*
+ *   callback : This is called when the transaction is polled
+ *              
+ *   (This function must have three arguments: 
+ *   - The result of the transaction, 
+ *   - The NdbConnection object, and 
+ *   - A pointer to an arbitrary object.)
+ */
+
+static void
+callback(int result, NdbConnection* myTrans, void* aObject)
+{
+  if (result == -1) {
+    std::cout << "Poll error: " << std::endl; 
+    APIERROR(myTrans->getNdbError());
+  } else {
+    std::cout << "Successful insert." << std::endl;
+  }
+}