public void PqsqlCommandBuilderTest3()
{
using (PqsqlConnection connection = new PqsqlConnection(connectionString))
using (PqsqlCommand command = connection.CreateCommand())
{
PqsqlTransaction transaction = connection.BeginTransaction();
command.Transaction = transaction;
command.CommandText = "create temp table temptab (c0 int4 primary key, c1 float8)";
command.CommandType = CommandType.Text;
command.ExecuteNonQuery();
transaction.Commit(); // temp table must be visible in the next transaction
transaction = connection.BeginTransaction();
PqsqlDataAdapter adapter = new PqsqlDataAdapter("select * from temptab", connection)
{
SelectCommand =
{
Transaction = transaction
}
};
PqsqlCommandBuilder builder = new PqsqlCommandBuilder(adapter);
// INSERT INTO "postgres"."pg_temp_2"."temptab" ("c0", "c1") VALUES (:p1, :p2)
PqsqlCommand inserter = builder.GetInsertCommand();
inserter.Parameters["p1"].Value = 1;
inserter.Parameters["p2"].Value = 2.1;
int inserted = inserter.ExecuteNonQuery();
Assert.AreEqual(1, inserted);
// UPDATE "postgres"."pg_temp_2"."temptab"
// SET "c0" = :p1, "c1" = :p2
// WHERE (("c0" = :p3) AND ((:p4 = 1 AND "c1" IS NULL) OR ("c1" = :p5)))
PqsqlCommand updater = builder.GetUpdateCommand();
updater.Parameters["p1"].Value = 2;
updater.Parameters["p2"].Value = 2.2;
updater.Parameters["p3"].Value = 1;
updater.Parameters["p4"].Value = 0;
updater.Parameters["p5"].Value = 2.1;
int updated = updater.ExecuteNonQuery();
Assert.AreEqual(1, updated);
// DELETE FROM "postgres"."pg_temp_2"."temptab"
// WHERE (("c0" = :p1) AND ((:p2 = 1 AND "c1" IS NULL) OR ("c1" = :p3)))
PqsqlCommand deleter = builder.GetDeleteCommand();
deleter.Parameters["p1"].Value = 2;
deleter.Parameters["p2"].Value = 0;
deleter.Parameters["p3"].Value = 2.2;
int deleted = deleter.ExecuteNonQuery();
Assert.AreEqual(1, deleted);
transaction.Rollback();
}
}
public void PqsqlCommandBuilderTest2()
{
using (PqsqlConnection connection = new PqsqlConnection(connectionString))
using (PqsqlCommand command = connection.CreateCommand())
{
PqsqlTransaction transaction = connection.BeginTransaction();
command.Transaction = transaction;
command.CommandText = "create temp table temptab (c0 int4 primary key, c1 float8)";
command.CommandType = CommandType.Text;
command.ExecuteNonQuery();
transaction.Commit(); // temp table must be visible in the next transaction
transaction = connection.BeginTransaction();
PqsqlDataAdapter adapter = new PqsqlDataAdapter("select * from temptab", connection)
{
SelectCommand =
{
Transaction = transaction
},
};
adapter.RowUpdated += Adapter_RowUpdated;
PqsqlCommandBuilder builder = new PqsqlCommandBuilder(adapter);
DataSet ds = new DataSet();
adapter.FillSchema(ds, SchemaType.Source);
adapter.Fill(ds, "temptab");
DataTable temptab = ds.Tables["temptab"];
DataRow row = temptab.NewRow();
row["c0"] = 123;
row["c1"] = 1.23;
temptab.Rows.Add(row);
adapter.Update(ds, "temptab");
command.CommandText = "select * from temptab";
command.CommandType = CommandType.Text;
using (PqsqlDataReader reader = command.ExecuteReader())
{
while (reader.Read())
{
Assert.AreEqual(123, reader.GetInt32(0));
Assert.AreEqual(1.23, reader.GetDouble(1));
}
}
transaction.Rollback();
}
}
public void PqsqlCommandBuilderTest4()
{
using (PqsqlConnection connection = new PqsqlConnection(connectionString))
using (PqsqlCommand command = connection.CreateCommand())
{
PqsqlTransaction transaction = connection.BeginTransaction();
command.Transaction = transaction;
command.CommandText = "create temp table temptab (c0 int4 primary key, c1 float8, c2 timestamp);";
command.CommandType = CommandType.Text;
command.ExecuteNonQuery();
transaction.Commit(); // temp table must be visible in the next transaction
transaction = connection.BeginTransaction();
PqsqlDataAdapter adapter = new PqsqlDataAdapter("select * from temptab", connection)
{
SelectCommand =
{
Transaction = transaction
},
};
adapter.RowUpdated += Adapter_RowUpdated;
PqsqlCommandBuilder builder = new PqsqlCommandBuilder(adapter);
DataTableMapping mapping = adapter.TableMappings.Add("Table", "temptab");
mapping.ColumnMappings.Add("c0", "id");
mapping.ColumnMappings.Add("c2", "time");
DataSet ds = new DataSet();
adapter.FillSchema(ds, SchemaType.Mapped);
adapter.Fill(ds);
DataTable tab = ds.Tables[0];
Assert.AreEqual("id", tab.Columns[0].ColumnName);
Assert.AreEqual("c1", tab.Columns[1].ColumnName);
Assert.AreEqual("time", tab.Columns[2].ColumnName);
transaction.Rollback();
}
}
public void PqsqlCommandBuilderTest1()
{
PqsqlCommandBuilder builder = new PqsqlCommandBuilder();
Assert.AreEqual(builder.QuotePrefix, "\"");
Assert.AreEqual(builder.QuoteSuffix, "\"");
string qid = builder.QuoteIdentifier("a\"bc");
Assert.AreEqual("\"a\"\"bc\"", qid, "wrong QuoteIdentifier");
builder.QuotePrefix = null;
builder.QuoteSuffix = null;
qid = builder.QuoteIdentifier("a\"bc");
Assert.AreEqual("a\"bc", qid, "wrong QuoteIdentifier");
builder.QuotePrefix = "\"";
builder.QuoteSuffix = "\"";
string uqid = builder.UnquoteIdentifier("\"a\"\"bc\"");
Assert.AreEqual(qid, uqid, "wrong UnquoteIdentifier");
}
