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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
commitd796c9dd933ab96ec83b9a634feedd5d32e1ba3f (patch)
tree6e3dcca4f77e20ec8966c666aac7c35bd4704053 /examples/sql/blob/main.cpp
downloadtqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.tar.gz
tqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.zip
Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
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+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
+**
+** This file is part of an example program for TQt. This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#include <qapplication.h>
+#include <qsqldatabase.h>
+#include <qsqlquery.h>
+#include <qsqlcursor.h>
+#include <qfile.h>
+
+#define DRIVER "TQPSQL7" /* see the TQt SQL documentation for a list of available drivers */
+#define DATABASE "" /* the name of your database */
+#define USER "" /* user name with appropriate rights */
+#define PASSWORD "" /* password for USER */
+#define HOST "" /* host on which the database is running */
+
+int main( int argc, char ** argv )
+{
+
+ TQApplication a( argc, argv, FALSE );
+ TQSqlDatabase * db = TQSqlDatabase::addDatabase( DRIVER );
+ db->setDatabaseName( DATABASE );
+ db->setUserName( USER );
+ db->setPassword( PASSWORD );
+ db->setHostName( HOST );
+ if ( !db->open() ) {
+ qWarning( db->lastError().databaseText() );
+ return 1;
+ }
+
+ if ( argc < 2 ) {
+ qWarning( "Usage: %s <filename>", argv[0] );
+ return 1;
+ }
+
+ // read a file which we want to insert into the database
+ TQFile f( argv[1] );
+ if ( !f.open( IO_ReadOnly ) ) {
+ qWarning( "Unable to open data file '%s' - exiting", argv[1] );
+ return 1;
+ }
+ TQByteArray binaryData = f.readAll();
+ qWarning( "Data size: %d", binaryData.size() );
+
+ // create a table with a binary field
+ TQSqlQuery q;
+ if ( !q.exec( "CREATE TABLE blobexample ( id INT PRIMARY KEY, binfield LONGBLOB )" ) ) {
+ qWarning( "Unable to create table - exiting" );
+ return 1;
+ }
+
+ // insert a BLOB into the table
+ if ( !q.prepare( "INSERT INTO blobexample ( id, binfield ) VALUES ( ?, ? )" ) ) {
+ qWarning( "Unable to prepare query - exiting" );
+ return 1;
+ }
+ q.bindValue( 0, 1 );
+ q.bindValue( 1, binaryData );
+ if ( !q.exec() ) {
+ qWarning( "Unable to execute prepared query - exiting" );
+ return 1;
+ }
+
+ // read the BLOB back from the database
+ if ( !q.exec( "SELECT id, binfield FROM blobexample" ) ) {
+ qWarning( "Unable to execute query - exiting" );
+ return 1;
+ }
+ qWarning( "\nTQSqlQuery:" );
+ while ( q.next() ) {
+ qWarning( "BLOB id: %d", q.value( 0 ).toInt() );
+ qWarning( "BLOB size: %d", q.value( 1 ).toByteArray().size() );
+ }
+
+ // write another BLOB using TQSqlCursor
+ TQSqlCursor cur( "blobexample" );
+ TQSqlRecord * r = cur.primeInsert();
+ r->setValue( "id", 2 );
+ r->setValue( "binfield", binaryData );
+ if ( !cur.insert() ) {
+ qWarning( "Unable to insert BLOB using TQSqlCursor - exiting" );
+ return 1;
+ }
+
+ // read the BLOBs back using TQSqlCursor
+ if ( !cur.select() ) {
+ qWarning( "Unable retrieve blobexample table using TQSqlCursor - exiting" );
+ return 1;
+ }
+ qWarning( "\nTQSqlCursor:" );
+ while ( cur.next() ) {
+ qWarning( "BLOB id: %d", cur.value( "id" ).toInt() );
+ qWarning( "BLOB size: %d", cur.value( "binfield" ).toByteArray().size() );
+ }
+
+ if ( !q.exec( "DROP TABLE blobexample" ) ) {
+ qWarning( "Unable to drop table - exiting" );
+ return 1;
+ }
+ return 0;
+}