protected override Expression VisitConstant(ConstantExpression node)
{
System.Diagnostics.Debug.Print("VisitConstant: {0}", node);
var expression = base.VisitConstant(node);
if (node.Type == typeof(byte[]))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromBinary((byte[])node.Value));
}
else if (node.Type == typeof(bool))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromBoolean((bool?)node.Value));
}
else if (node.Type == typeof(byte))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromByte((byte?)node.Value));
}
else if (node.Type == typeof(DateTime))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromDateTime((DateTime?)node.Value));
}
else if (node.Type == typeof(DateTimeOffset))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromDateTimeOffset((DateTimeOffset?)node.Value));
}
else if (node.Type == typeof(decimal))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromDecimal((decimal?)node.Value));
}
else if (node.Type == typeof(double))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromDouble((double?)node.Value));
}
else if (node.Type == typeof(Guid))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromGuid((Guid?)node.Value));
}
else if (node.Type == typeof(Int16))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromInt16((Int16?)node.Value));
}
else if (node.Type == typeof(Int32))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromInt32((Int32?)node.Value));
}
else if (node.Type == typeof(Int64))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromInt64((Int64?)node.Value));
}
else if (node.Type == typeof(float))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromSingle((float?)node.Value));
}
else if (node.Type == typeof(string))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromString((string)node.Value));
}
else
{
throw new NotImplementedException(string.Format("Unhandled Type of {0} for Constant value {1} in LambdaToDbExpressionVisitor.VisitConstant", node.Type.Name, node.Value ?? "null"));
}
return(expression);
}
protected override Expression VisitConstant(ConstantExpression node)
{
#if (DEBUG_VISITS)
System.Diagnostics.Debug.Print("VisitConstant: {0}", node);
#endif
var expression = base.VisitConstant(node);
var type = node.Type;
if (IsNullableType(type))
{
var genericArgs = type.GetGenericArguments();
if ((genericArgs != null) && (genericArgs.Length == 1))
{
type = genericArgs[0];
}
}
if (type == typeof(byte[]))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromBinary((byte[])node.Value));
}
else if (type == typeof(bool))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromBoolean((bool?)node.Value));
}
else if (type == typeof(byte))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromByte((byte?)node.Value));
}
else if (type == typeof(DateTime))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromDateTime((DateTime?)node.Value));
}
else if (type == typeof(DateTimeOffset))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromDateTimeOffset((DateTimeOffset?)node.Value));
}
else if (type == typeof(decimal))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromDecimal((decimal?)node.Value));
}
else if (type == typeof(double))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromDouble((double?)node.Value));
}
else if (type == typeof(Guid))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromGuid((Guid?)node.Value));
}
else if (type == typeof(Int16))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromInt16((Int16?)node.Value));
}
else if (type == typeof(Int32))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromInt32((Int32?)node.Value));
}
else if (type.IsEnum)
{
if (_DataSpace == DataSpace.CSpace)
{
var typeUsage = TypeUsageForPrimitiveType(node.Type);
MapExpressionToDbExpression(expression, DbExpressionBuilder.Constant(typeUsage, node.Value));
}
else
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromInt32((Int32)node.Value));
}
}
else if (type == typeof(Int64))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromInt64((Int64?)node.Value));
}
else if (type == typeof(float))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromSingle((float?)node.Value));
}
else if (type == typeof(string))
{
MapExpressionToDbExpression(expression, DbConstantExpression.FromString((string)node.Value));
}
else
{
throw new NotImplementedException(string.Format("Unhandled Type of {0} for Constant value {1} in LambdaToDbExpressionVisitor.VisitConstant", node.Type.Name, node.Value ?? "null"));
}
return(expression);
}