Part APurposeThis laboratory provides some experience work.docx

Part A:
Purpose:
This laboratory provides some experience working with the C++
programming language that has an SQL query and SQL update
embedded in it.
Procedure:
Follow the instructions below.
Be sure to load the C++ to ProQueryExample code presented in
the Appendix A below.
In your
ProQueryExample.cpp source file, modify the source code so
that it changes the customer balance of Streaming Direct from
$210.40 to $337.26. Rerun the query in step 3 above. Modify
the source to return the balance of Streaming Direct to $210.40.
Rerun the query in step 3 above. Print out a copy of your
output.
Submit a cover sheet, a copy of your output, and the source
code that you used to obtain it. Follow any additional
instructions that your instructor may give you.
Appendix A
/*
* Name: ProQueryExample.cpp
*
* Description
* This source code displays a join of the invoice and
* customer tables. In addition this source code updates the

Streaming
* Direct customer name to Direct Sports and then returns the
name back
* to Streaming Direct.
*
* Remarks:
* Author Date Comment
* Mike Lukens 08/08/2008 initial code
*
*/
#include
#include
#include
using namespace oracle::occi;
using namespace std;
class occiIntf
{
public:
//constructor
occiIntf ( string login, string password, string dbStr )
{
//setup the environment which Oracle requires
environ = Environment::createEnvironment (
Environment::DEFAULT );
try
{
//create a connection to the database
connect = environ->createConnection ( login,
password, dbStr );
}
catch ( SQLException excpt )
{
cout << "Exception thrown by createConnection"
<< endl;
cout << "Error code: "<< excpt.getErrorCode ( ) <<

endl;
cout << excpt.getMessage ( ) << endl;
system ( "pause" );
exit ( 1 );
}
}
//destructor
~occiIntf ( )
{
//make sure to clean up the connection and the
environment when
//we are done!
environ->terminateConnection ( connect );
Environment::terminateEnvironment ( environ );
}
//update a field
void updateField ( string name, string id )
{
//change the customer name to/from Direct Sports in
CUSTOMER table
string sqlStatmt
= "UPDATE customer SET cust_name = :x WHERE
cust_id = :y";
statmt = connect->createStatement ( sqlStatmt );
try
{
//substitute the customer name and id into the SQL
statement
statmt->setString ( 1, name );
statmt->setString ( 2, id );
statmt->executeUpdate ();
cout << "Update succeededn" << endl;
}

{
cout << "Exception thrown by updateField" <<
endl;
endl;
}
connect->terminateStatement ( statmt );
}
//display the invoice number, date, and customer name
void displayAllRows ( )
{
//create the SQL statement
string sqlStatmt
= "SELECT invoice_num, invoice_date, cust_name
FROM invoice, customer WHERE invoice.cust_id =
customer.cust_id";
//instantiate the statement object from our connection object
//using the SQL string to initialize the statement
try
{
//execute the query and point to the result set
//in order to loop through the returned data.
ResultSet *resSet = statmt->executeQuery ( );
//display the column headers
cout << endl
<< setw ( 5 ) << "INV #" << " "
<< setw ( 9 ) << "DATE " << " "
<< setw ( 20 ) << "CUSTOMER NAME" <<
endl;
//keep getting results until there are none
while ( resSet->next ( ) )
{
//extract each attribute value which is a string

cout << setw ( 5 ) << right << resSet->getString
( 1 ) << " "
<< setw ( 9 ) << resSet->getString ( 2 ) <<
" "
<< setw ( 30 ) << left << resSet->getString
( 3 ) << endl;
}
cout << endl;
//close the result set object when done
statmt->closeResultSet ( resSet );
}
{
cout << "Exception thrown by displayAllRows." <<
endl;
cout << "Error code: " << excpt.getErrorCode ( ) <<
endl;
}
//done with statement
}
private:
//variables required by OCCI
Environment * environ;
Connection * connect;
Statement * statmt;
}; //end of occiIntf class
void main ( )
{
string dbStr = "ECET450";
string login;
string password;

cout << "Enter your Oracle login: ";
cin >> login;
cout << "Enter your Oracle password: ";
cin >> password;
system ( "CLS" ); //clear the screen
cout << "Demonstration of a query using OCCI" << endl;
// First create an object that is connected with the Oracle
database.
occiIntf * database = new occiIntf ( login, password, dbStr
);
cout << "Display invoice number, date, and customer name"
<< endl;
database->displayAllRows ( );
cout << "Update customer Streaming Direct to Direct
Sports" << endl;
database->updateField ( "Direct Sports" , "1193" );
cout << "Display invoice number, date, and updated
customer name" << endl;
cout << "Update customer Direct Sports to Streaming
Direct" << endl;
database->updateField ( "Streaming Direct" , "1193" );
cout << "Display invoice number, date, and updated
customer name" << endl;
delete database;
cout << "OCCI query and update completen" << endl;
system ( "pause" );
}

Part B:
Procedure:
Be sure to have a copy of the C++ to ProInsertExample code
presented in the Appendix B below.
Modify the member function in the ProInsertExample.cpp file
below to insert a new row in the Line table. Add the following
row: Invoice number: 42447, product ID: KW114, number
ordered: 1, and price: $595.00. Be sure to update the column
headings. Update the spacing between columns if necessary.
Modify the member function that deletes this new row inserted
in step 3 above. Display the contents of the Line table again.
Print out a copy of your output that displays the Line table
before the insertion, of the Line table after the insertion, and
the Line table after the deletion.
Submit a cover sheet, a copy of your output, and the source
code that you used to obtain it. Follow any additional
instructions that your instructor may give you.
Appendix B
/*
* Name: ProInsertExample.cpp
*
* Description:
* This source file inserts and deletes a row in the product
table.
* In addition the displayAllRows member function is
modified to display
* the contents of the product table.

*
* Remarks:
* Author Date Comment
* Mike Lukens 08/08/2008 initial code
*
*/
#include
#include
#include
using namespace oracle::occi;
using namespace std;
class occiIntf
{
public:
//constructor
occiIntf ( string login, string password, string dbStr )
{
//create an environment which Oracle requires
environ = Environment::createEnvironment (
Environment::DEFAULT );
try
{
//create a connection to the database
connect = environ->createConnection ( login,
password, dbStr );
}
{
cout << "Exception thrown by createConnection"
<< endl;
endl;
system ( "pause" );
exit ( 1 );

}
}
//destructor
~occiIntf ( )
{
// Make sure to clean up the connection and the
environment when we are done!
environ->terminateConnection ( connect );
Environment::terminateEnvironment ( environ );
}
//update the customer name field
void updateField ( string name, string id )
{
//change the customer name in CUSTOMER table
string sqlStatmt
= "UPDATE customer SET cust_name = :x WHERE
cust_id = :y";
try
{
//substitute the customer name and id into the SQL
statement
statmt->setString ( 1, name );
statmt->setString ( 2, id );
statmt->executeUpdate ();
cout << "Update succeededn" << endl;
}
{
cout << "Exception thrown by updateRow" << endl;
endl;
}

}
//display the product table
void displayAllRows ( )
{
//generate the SQL string
string sqlStatmt = "SELECT * FROM product";
//instantiate the statement object from our connection
object
//using the SQL string to initialize the statement
try
{
//execute the query and point to the result set in
order to
//loop through the returned data
ResultSet * resSet = statmt->executeQuery ( );
//display the column headers
cout << endl
<< setw ( 7 ) << "PROD ID" << " "
<< setw ( 20 ) << "PROD DESC" << " "
<< setw ( 3 ) << "#" << " "
<< setw ( 4 ) << "TYPE" << " "
<< setw ( 9 ) << "WAREHOUSE" << " "
<< setw ( 8 ) << "PRICE" << endl;
//keep processing the records until there are none
while ( resSet->next ( ) )
{
//get the attribute values either as strings or as
integers
cout << setw ( 7 ) << right << resSet->getString
( 1 ) << " "
" "
<< setw ( 3 ) << resSet->getInt ( 3 ) << " "

" "
" "
<< setw ( 8 ) << resSet->getFloat ( 6 ) << "
"
<< endl;
}
cout << endl;
//close the result set object
statmt->closeResultSet ( resSet );
}
{
cout << "Exception thrown by displayAllRows" <<
endl;
cout << "Error code: " << excpt.getErrorCode ( ) <<
endl;
}
//close the statement
}
//insert a row into the product table
void insertRow ( )
{
//generate a string containing the SQL statement
string sqlStatmt =
"INSERT INTO PRODUCT VALUES ( 'MK140',
'Hair Trimmer', 23, 'AP', 'B', 19.95 )";
//instantiate a statement object from our connection
object using
//the SQL string to initialize the statement
try{

//execute the SQL statement
statmt->executeUpdate ( );
cout << "Inserting a row into the PRODUCT table
was successfuln" << endl;
}
{
cout << "Exception thrown by insertRow" << endl;
endl;
}
//close this statement object
}
//delete a row
void deleteRow ( string product_id )
{
//generate the SQL statement to delete a product row
string sqlStatmt = "DELETE FROM PRODUCT
WHERE PROD_ID = :x";
try
{
// Substitute the product id into the prepared
statement
statmt->setString ( 1, product_id );
statmt->executeUpdate ( );
cout << "Delete a product rown" << endl;
}
{
cout << "Exception thrown by deleteRow" << endl;
endl;

}
}
private:
// Variables required to interact with Oracle
Environment * environ;
Connection * connect;
Statement * statmt;
}; // end of class occiIntf
int main (void)
{
string dbStr = "ECET450";
string login;
string password;
cout << "Enter your Oracle login: ";
cin >> login;
cout << "Enter your Oracle password: ";
cin >> password;
system ( "CLS" );
cout << "Perform an insertion and a deletion using OCCI"
<< endl;
//instantiate an occiIntf object
occiIntf * database = new occiIntf ( login, password, dbStr
);
cout << "Display PRODUCT table" << endl;
cout << "Insert a new row into the PRODUCT table" <<
endl;
database->insertRow ( );

cout << "Display product table with the new row" << endl;
cout << "Delete the new row from the PRODUCT table" <<
endl;
database->deleteRow ( "MK140" );
cout << "Display product table without the new row" <<
endl;
delete database;
cout << "OCCI insertion and deletion completen" << endl;
system ( "pause" );
}

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