public void Devart_ParameterCheck(bool explicitConnection)
{
var db = new SPTestsDatabase(ProviderName, explicitConnection);
if (explicitConnection)
{
MightyTests.ConnectionStringUtils.CheckConnectionStringRequiredForOpenConnection(db);
}
dynamic result;
using (var connection = db.OpenConnection(
explicitConnection ?
MightyTests.ConnectionStringUtils.GetConnectionString(TestConstants.ReadTestConnection, ProviderName) :
null
))
{
using (var command = db.CreateCommandWithParams("testproc_in_out", isProcedure: true, connection: connection))
{
// uses a dynamic cast to set a provider-specific property without explicitly depending on the provider library
((dynamic)command).ParameterCheck = true;
// Devart-specific: makes a round-trip to the database to fetch the parameter names
command.Prepare();
command.Parameters["param1"].Value = 10;
db.Execute(command, connection: connection);
result = db.ResultsAsExpando(command);
}
}
Assert.AreEqual(20, result.param2);
}
public void PassingCursorInputParameter(bool explicitConnection)
{
var db = new SPTestsDatabase(ProviderName, explicitConnection);
if (explicitConnection)
{
MightyTests.ConnectionStringUtils.CheckConnectionStringRequiredForOpenConnection(db);
}
// To share cursors between commands in Oracle the commands must use the same connection
using (var conn = db.OpenConnection(
explicitConnection ?
MightyTests.ConnectionStringUtils.GetConnectionString(TestConstants.ReadWriteTestConnection, ProviderName) :
null
))
{
var res1 = db.ExecuteWithParams("begin open :p_rc for select * from emp where deptno = 10; end;", outParams: new { p_rc = new Cursor() }, connection: conn);
Assert.AreEqual(typeof(Cursor), res1.p_rc.GetType());
Assert.AreEqual("OracleRefCursor", ((Cursor)res1.p_rc).CursorRef.GetType().Name);
db.Execute("delete from processing_result", connection: conn);
// oracle demo code takes the input cursor and writes the results to `processing_result` table
var res2 = db.ExecuteProcedure("cursor_in_out.process_cursor", inParams: new { p_cursor = res1.p_rc }, connection: conn);
Assert.AreEqual(0, ((IDictionary <string, object>)res2).Count);
var processedRows = db.Query("select * from processing_result", connection: conn).ToList();
Assert.AreEqual(3, processedRows.Count);
}
}
public void Devart_ParameterCheck()
{
var db = new SPTestsDatabase(ProviderName);
dynamic result;
using (var connection = db.OpenConnection())
{
using (var command = db.CreateCommandWithParams("testproc_in_out", isProcedure: true, connection: connection))
{
// uses a dynamic cast to set a provider-specific property without explicitly depending on the provider library
((dynamic)command).ParameterCheck = true;
// Devart-specific: makes a round-trip to the database to fetch the parameter names
command.Prepare();
command.Parameters["param1"].Value = 10;
db.Execute(command);
result = db.ResultsAsExpando(command);
}
}
Assert.AreEqual(20, result.param2);
}
public void LargeCursor_ExplicitFetch()
{
int FetchSize = 20000;
int count = 0;
int batchCount = 0;
var db = new SPTestsDatabase();
using (var conn = db.OpenConnection())
{
// cursors in PostgreSQL must share a transaction (not just a connection, as in Oracle)
using (var trans = conn.BeginTransaction())
{
var result = db.ExecuteProcedure("lump", returnParams: new { cursor = new Cursor() }, connection: conn);
while (true)
{
var fetchTest = db.Query($@"FETCH {FetchSize} FROM ""{result.cursor.CursorRef}""", connection: conn);
int subcount = 0;
foreach (var item in fetchTest)
{
count++;
subcount++;
// there is no ORDER BY (it would not be sensible on such a huge data set) - this only sometimes works...
//Assert.AreEqual(count, item.id);
}
if (subcount == 0)
{
break;
}
batchCount++;
}
db.Execute($@"CLOSE ""{result.cursor.CursorRef}""", connection: conn);
trans.Commit();
}
}
Assert.AreEqual((LargeCursorSize + FetchSize - 1) / FetchSize, batchCount);
Assert.AreEqual(LargeCursorSize, count);
}