public override bool TryGetValue(string keyword, out object value)
{
bool flag = base.TryGetValue(keyword, out value);
if (this._properties.ContainsKey(keyword))
{
PropertyDescriptor descriptor = this._properties[keyword] as PropertyDescriptor;
if (descriptor == null)
{
return(flag);
}
if (flag)
{
if (descriptor.PropertyType == typeof(bool))
{
value = SQLiteConvert.ToBoolean(value);
return(flag);
}
value = TypeDescriptor.GetConverter(descriptor.PropertyType).ConvertFrom(value);
return(flag);
}
DefaultValueAttribute attribute = descriptor.Attributes[typeof(DefaultValueAttribute)] as DefaultValueAttribute;
if (attribute != null)
{
value = attribute.Value;
flag = true;
}
}
return(flag);
}
/// <summary>
/// Helper function for retrieving values from the connectionstring
/// </summary>
/// <param name="keyword">The keyword to retrieve settings for</param>
/// <param name="value">The resulting parameter value</param>
/// <returns>Returns true if the value was found and returned</returns>
public override bool TryGetValue(string keyword, out object value)
{
bool b = base.TryGetValue(keyword, out value);
if (!_properties.ContainsKey(keyword))
{
return(b);
}
PropertyDescriptor pd = _properties[keyword] as PropertyDescriptor;
if (pd == null)
{
return(b);
}
// Attempt to coerce the value into something more solid
if (b)
{
if (pd.PropertyType == typeof(Boolean))
{
value = SQLiteConvert.ToBoolean(value);
}
else if (pd.PropertyType != typeof(byte[]))
{
value = TypeDescriptor.GetConverter(pd.PropertyType).ConvertFrom(value);
}
}
else
{
DefaultValueAttribute att = pd.Attributes[typeof(DefaultValueAttribute)] as DefaultValueAttribute;
if (att != null)
{
value = att.Value;
b = true;
}
}
return(b);
}
/// <summary>
/// Perform the bind operation for an individual parameter
/// </summary>
/// <param name="index">The index of the parameter to bind</param>
/// <param name="param">The parameter we're binding</param>
private void BindParameter(int index, SQLiteParameter param)
{
if (param == null)
{
throw new SQLiteException("Insufficient parameters supplied to the command");
}
if (HelperMethods.HasFlags(
_flags, SQLiteConnectionFlags.UseConnectionBindValueCallbacks))
{
bool complete;
InvokeBindValueCallback(index, param, out complete);
if (complete)
{
return;
}
}
object obj = param.Value;
DbType objType = param.DbType;
if ((obj != null) && (objType == DbType.Object))
{
objType = SQLiteConvert.TypeToDbType(obj.GetType());
}
if (SQLite3.ForceLogPrepare() || HelperMethods.LogPreBind(_flags))
{
IntPtr handle = _sqlite_stmt;
SQLiteLog.LogMessage(HelperMethods.StringFormat(
CultureInfo.CurrentCulture,
"Binding statement {0} paramter #{1} with database type {2} and raw value {{{3}}}...",
handle, index, objType, obj));
}
if ((obj == null) || Convert.IsDBNull(obj))
{
_sql.Bind_Null(this, _flags, index);
return;
}
CultureInfo invariantCultureInfo = CultureInfo.InvariantCulture;
bool invariantText = HelperMethods.HasFlags(
_flags, SQLiteConnectionFlags.BindInvariantText);
CultureInfo cultureInfo = CultureInfo.CurrentCulture;
if (HelperMethods.HasFlags(
_flags, SQLiteConnectionFlags.ConvertInvariantText))
{
cultureInfo = invariantCultureInfo;
}
if (HelperMethods.HasFlags(
_flags, SQLiteConnectionFlags.BindAllAsText))
{
if (obj is DateTime)
{
_sql.Bind_DateTime(this, _flags, index, (DateTime)obj);
}
else
{
_sql.Bind_Text(this, _flags, index, invariantText ?
SQLiteConvert.ToStringWithProvider(obj, invariantCultureInfo) :
SQLiteConvert.ToStringWithProvider(obj, cultureInfo));
}
return;
}
bool invariantDecimal = HelperMethods.HasFlags(
_flags, SQLiteConnectionFlags.BindInvariantDecimal);
if (HelperMethods.HasFlags(
_flags, SQLiteConnectionFlags.BindDecimalAsText))
{
if (obj is Decimal)
{
_sql.Bind_Text(this, _flags, index, invariantText || invariantDecimal ?
SQLiteConvert.ToStringWithProvider(obj, invariantCultureInfo) :
SQLiteConvert.ToStringWithProvider(obj, cultureInfo));
return;
}
}
switch (objType)
{
case DbType.Date:
case DbType.Time:
case DbType.DateTime:
//
// NOTE: The old method (commented below) does not honor the selected date format
// for the connection.
// _sql.Bind_DateTime(this, index, Convert.ToDateTime(obj, cultureInfo));
_sql.Bind_DateTime(this, _flags, index, (obj is string) ?
_sql.ToDateTime((string)obj) : Convert.ToDateTime(obj, cultureInfo));
break;
case DbType.Boolean:
_sql.Bind_Boolean(this, _flags, index, SQLiteConvert.ToBoolean(obj, cultureInfo, true));
break;
case DbType.SByte:
_sql.Bind_Int32(this, _flags, index, Convert.ToSByte(obj, cultureInfo));
break;
case DbType.Int16:
_sql.Bind_Int32(this, _flags, index, Convert.ToInt16(obj, cultureInfo));
break;
case DbType.Int32:
_sql.Bind_Int32(this, _flags, index, Convert.ToInt32(obj, cultureInfo));
break;
case DbType.Int64:
_sql.Bind_Int64(this, _flags, index, Convert.ToInt64(obj, cultureInfo));
break;
case DbType.Byte:
_sql.Bind_UInt32(this, _flags, index, Convert.ToByte(obj, cultureInfo));
break;
case DbType.UInt16:
_sql.Bind_UInt32(this, _flags, index, Convert.ToUInt16(obj, cultureInfo));
break;
case DbType.UInt32:
_sql.Bind_UInt32(this, _flags, index, Convert.ToUInt32(obj, cultureInfo));
break;
case DbType.UInt64:
_sql.Bind_UInt64(this, _flags, index, Convert.ToUInt64(obj, cultureInfo));
break;
case DbType.Single:
case DbType.Double:
case DbType.Currency:
_sql.Bind_Double(this, _flags, index, Convert.ToDouble(obj, cultureInfo));
break;
case DbType.Binary:
_sql.Bind_Blob(this, _flags, index, (byte[])obj);
break;
case DbType.Guid:
if (_command.Connection._binaryGuid == true)
{
_sql.Bind_Blob(this, _flags, index, ((Guid)obj).ToByteArray());
}
else
{
_sql.Bind_Text(this, _flags, index, invariantText ?
SQLiteConvert.ToStringWithProvider(obj, invariantCultureInfo) :
SQLiteConvert.ToStringWithProvider(obj, cultureInfo));
}
break;
case DbType.Decimal: // Dont store decimal as double ... loses precision
_sql.Bind_Text(this, _flags, index, invariantText || invariantDecimal ?
SQLiteConvert.ToStringWithProvider(Convert.ToDecimal(obj, cultureInfo), invariantCultureInfo) :
SQLiteConvert.ToStringWithProvider(Convert.ToDecimal(obj, cultureInfo), cultureInfo));
break;
default:
_sql.Bind_Text(this, _flags, index, invariantText ?
SQLiteConvert.ToStringWithProvider(obj, invariantCultureInfo) :
SQLiteConvert.ToStringWithProvider(obj, cultureInfo));
break;
}
}
