public object Evaluate(ValueEnvironment environment)
{
string name = EvaluateUtilities.EvaluateAsName(this.nameExpression, environment);
object value = environment.GetValue(name);
Type type = null;
type = TypeUtilities.GetType(environment, name);
object[] parameters = null;
if (this.arguments != null && this.arguments.Count > 0)
{
List <object> values = new List <object>();
foreach (IExpression argument in this.arguments)
{
values.Add(argument.Evaluate(environment));
}
parameters = values.ToArray();
}
return(Activator.CreateInstance(type, parameters));
}
public override void Execute(Machine machine, ValueEnvironment environment)
{
string name = EvaluateUtilities.EvaluateAsName(this.nameExpression, environment);
string commandText = null;
if (this.commandExpression != null)
{
commandText = (string)this.commandExpression.Evaluate(environment);
}
Database database = (Database)environment.GetValue(ValueEnvironment.CurrentDatabase);
WorkArea workarea;
if (commandText != null)
{
IDbCommand command = database.ProviderFactory.CreateCommand();
command.CommandText = commandText;
command.Connection = database.GetConnection();
workarea = new WorkArea(name, command, database.ProviderFactory);
}
else
{
workarea = new WorkArea(name, database.GetConnection(), database.ProviderFactory);
}
environment.SetPublicValue(name, workarea);
environment.SetPublicValue(ValueEnvironment.CurrentWorkArea, workarea);
}
private static Type AsType(IExpression expression, ValueEnvironment environment)
{
string name = EvaluateUtilities.EvaluateAsName(expression, environment);
if (name == null)
{
return(null);
}
return(TypeUtilities.AsType(name));
}
public override void Execute(Machine machine, ValueEnvironment environment)
{
string name = EvaluateUtilities.EvaluateAsName(this.nameExpression, environment);
string connectionString = null;
if (this.connectionExpression != null)
{
connectionString = (string)this.connectionExpression.Evaluate(environment);
}
string providerName = null;
if (this.providerExpression != null)
{
providerName = (string)this.providerExpression.Evaluate(environment);
}
Database database = new Database(name, providerName, connectionString);
environment.SetPublicValue(name, database);
environment.SetPublicValue(ValueEnvironment.CurrentDatabase, database);
}