public async Task DereferenceFromQuery_ManualWrapping()
{
var db = new SPTestsDatabase();
// without a cursor param, nothing will trigger the wrapping transaction support in Massive
// so in this case we need to add the wrapping transaction manually (with TransactionScope or
// BeginTransaction, see other examples in this file)
int count = 0;
using (var conn = await db.OpenConnectionAsync())
{
using (var trans = conn.BeginTransaction())
{
var employees = await db.QueryAsync("SELECT * FROM cursor_employees()", conn);
await employees.ForEachAsync(employee =>
{
Console.WriteLine(employee.firstname + " " + employee.lastname);
count++;
});
//scope.Complete();
}
}
Assert.AreEqual(9, count);
}
public async Task LargeCursor_ExplicitFetch()
{
int FetchSize = 20000;
int count = 0;
int batchCount = 0;
var db = new SPTestsDatabase();
using (var conn = await db.OpenConnectionAsync())
{
// cursors in PostgreSQL must share a transaction (not just a connection, as in Oracle)
using (var trans = conn.BeginTransaction())
{
var result = await db.ExecuteProcedureAsync("lump", returnParams: new { cursor = new Cursor() }, connection: conn);
while(true)
{
var fetchTest = await db.QueryAsync($@"FETCH {FetchSize} FROM ""{result.cursor.CursorRef}""", connection: conn);
int subcount = 0;
await fetchTest.ForEachAsync(item => {
count++;
subcount++;
// there is no ORDER BY (it would not be sensible on such a huge data set) - this only sometimes works...
//Assert.AreEqual(count, item.id);
});
if(subcount == 0)
{
break;
}
batchCount++;
}
await db.ExecuteAsync($@"CLOSE ""{result.cursor.CursorRef}""", connection: conn);
trans.Commit();
}
}
Assert.AreEqual((LargeCursorSize + FetchSize - 1) / FetchSize, batchCount);
Assert.AreEqual(LargeCursorSize, count);
}
public async Task PassingCursorInputParameter(bool explicitConnection)
{
var db = new SPTestsDatabase(ProviderName, explicitConnection);
if (explicitConnection)
{
MightyTests.ConnectionStringUtils.CheckConnectionStringRequiredForOpenConnectionAsync(db);
}
// To share cursors between commands in Oracle the commands must use the same connection
using (var conn = await db.OpenConnectionAsync(
explicitConnection ?
MightyTests.ConnectionStringUtils.GetConnectionString(TestConstants.ReadWriteTestConnection, ProviderName) :
null))
{
var res1 = await db.ExecuteWithParamsAsync("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);
await db.ExecuteAsync("delete from processing_result", connection : conn);
// oracle demo code takes the input cursor and writes the results to `processing_result` table
var res2 = await db.ExecuteProcedureAsync("cursor_in_out.process_cursor", inParams : new { p_cursor = res1.p_rc }, connection : conn);
Assert.AreEqual(0, ((IDictionary <string, object>)res2).Count);
var processedRows = await(await db.QueryAsync("select * from processing_result", connection: conn)).ToListAsync();
Assert.AreEqual(3, processedRows.Count);
}
}
public async Task DereferenceFromQuery_ManualWrapping(bool explicitConnection)
{
var db = new SPTestsDatabase(explicitConnection);
if (explicitConnection)
{
MightyTests.ConnectionStringUtils.CheckConnectionStringRequiredForOpenConnectionAsync(db);
}
// without a cursor param, nothing will trigger the wrapping transaction support in Massive
// so in this case we need to add the wrapping transaction manually (with TransactionScope or
// BeginTransaction, see other examples in this file)
int count = 0;
using (var conn = await db.OpenConnectionAsync(
explicitConnection ?
MightyTests.ConnectionStringUtils.GetConnectionString(TestConstants.ReadWriteTestConnection, TestConstants.ProviderName) :
null
))
{
using (var trans = conn.BeginTransaction())
{
var employees = await db.QueryAsync("SELECT * FROM cursor_employees()", conn);
await employees.ForEachAsync(employee =>
{
Console.WriteLine(employee.firstname + " " + employee.lastname);
count++;
});
//scope.Complete();
}
}
Assert.AreEqual(9, count);
}
public async Task Procedure_Call_Query_Plus_Results()
{
var db = new SPTestsDatabase(ProviderName);
int count = 0;
dynamic results;
using (var command = db.CreateCommandWithParams("rewards_report_for_date",
inParams: new
{
min_monthly_purchases = 3,
min_dollar_amount_purchased = 20,
report_date = new DateTime(2005, 5, 1)
},
outParams: new
{
count_rewardees = 0
},
isProcedure: true))
{
var resultset = await db.QueryAsync(command);
// read the result set
await resultset.ForEachAsync(item =>
{
count++;
Assert.AreEqual(typeof(string), item.last_name.GetType());
Assert.AreEqual(typeof(DateTime), item.create_date.GetType());
});
results = db.ResultsAsExpando(command);
}
Assert.Greater(results.count_rewardees, 0);
Assert.AreEqual(count, results.count_rewardees);
}