/// <summary>
/// Create a new IngresConnectionStringBuilder with
/// an initial connection string.
/// </summary>
/// <param name="connectionString"></param>
public IngresConnectionStringBuilder(string connectionString)
{
_items = (DictionaryEntry[])
ConnectStringConfig.ConnectBuilderKeywords.Clone();
this.ConnectionString = connectionString;
_connectStringConfig =
ConnectStringConfig.ParseConnectionString(connectionString);
}
/// <summary>
/// Returns a new Connection object and a cloned connection string.
/// </summary>
/// <returns></returns>
public object Clone()
{
IngresConnection newConn = new IngresConnection();
newConn.ConnectionString =
ConnectStringConfig.ToConnectionString(this.config);
// overlay the connection string with the sanitized version
// if the old connection had been openned.
newConn._connectionString= this._connectionString;
return newConn;
}
/// <summary>
/// Release allocated resources of the Command and base Component.
/// </summary>
/// <param name="disposing">
/// true if object is being explicitly disposed of, not finalized.
/// false if method is called by runtime from inside the finalizer.
/// </param>
protected override void Dispose(bool disposing)
{
/*if disposing == true Object is being explicitly disposed of, not finalized
if disposing == false then method called by runtime from inside the
finalizer and we should not reference other
objects. */
lock(this)
{
try
{
if (disposing)
{
Close();
_connectionString = null;
config = null;
}
}
finally
{
base.Dispose(disposing); // let component base do its cleanup
}
}
} // Dispose
private int TryGetOrdinal(String keyword)
{
int i = ConnectStringConfig.TryGetOrdinal(keyword);
return(i);
}
/// <summary>
/// Get/set the value associated with the specified key.
/// </summary>
/// <param name="keyword"></param>
/// <returns></returns>
public override object this [String keyword]
{
// Look up the ordinal for and return
// the value at that position.
get
{
int i = GetOrdinal(keyword);
return(_items[i].Value);
}
set
{
int i = GetOrdinal(keyword);
if (value == null)
{
this.Remove(keyword);
return;
}
Object nativeValue = value; // assume no conversion needed
TypeCode sourceTypeCode = Type.GetTypeCode(value.GetType());
Type targetType =
ConnectStringConfig.ConnectBuilderKeywords[i].Value.GetType();
TypeCode targetTypeCode = Type.GetTypeCode(targetType);
if (targetTypeCode != sourceTypeCode)
{
switch (targetTypeCode)
{
case TypeCode.Int32:
nativeValue = Int32.Parse(value.ToString());
break;
case TypeCode.Boolean:
String valueString = value.ToString().Trim();
String valueLower = ToInvariantLower(valueString);
// Catch yes/no literals that Boolean.Parse doesn't
if (valueLower == "yes" || valueLower == "1")
{
nativeValue = true;
value = "true";
break;
}
if (valueLower == "no" || valueLower == "0")
{
nativeValue = false;
value = "false";
break;
}
nativeValue = Boolean.Parse(valueString);
break;
case TypeCode.String:
nativeValue = value.ToString();
break;
default:
throw new System.InvalidOperationException(
"IngresConnectionStringBuilder internal error: " +
"unexpected Type for keyword '" + keyword + "'.");
} // end switch
} // end if (targetTypeCode != sourceTypeCode)
string connectionString = keyword + "=" +
(value != null ? value.ToString() : "");
ConnectStringConfig connectStringConfig =
ConnectStringConfig.ParseConnectionString(connectionString);
if (connectStringConfig.Count > 1)
{
throw new ArgumentException("Invalid keyword/value pair: '" +
connectionString + "'.");
}
base[_items[i].Key.ToString()] = nativeValue; // Standardize key
_items[i].Value = nativeValue;
}
}
