protected HqlTreeNode VisitConstantExpression(ConstantExpression expression)
{
if (expression.Value != null)
{
IEntityNameProvider entityName = expression.Value as IEntityNameProvider;
if (entityName != null)
{
return(_hqlTreeBuilder.Ident(entityName.EntityName));
}
}
NamedParameter namedParameter;
if (_parameters.ConstantToParameterMap.TryGetValue(expression, out namedParameter))
{
_parameters.RequiredHqlParameters.Add(new NamedParameterDescriptor(namedParameter.Name, null, false));
var parameter = _hqlTreeBuilder.Parameter(namedParameter.Name).AsExpression();
// SQLite driver binds decimal parameters to text, which can cause unexpected results in arithmetic operations.
return(_parameters.SessionFactory.Dialect.IsDecimalStoredAsFloatingPointNumber && expression.Type.UnwrapIfNullable() == typeof(decimal)
? _hqlTreeBuilder.TransparentCast(parameter, expression.Type)
: parameter);
}
return(_hqlTreeBuilder.Constant(expression.Value));
}
protected HqlTreeNode VisitConstantExpression(ConstantExpression expression)
{
if (expression.Value != null)
{
IEntityNameProvider entityName = expression.Value as IEntityNameProvider;
if (entityName != null)
{
return(_hqlTreeBuilder.Ident(entityName.EntityName));
}
}
NamedParameter namedParameter;
if (_parameters.ConstantToParameterMap.TryGetValue(expression, out namedParameter))
{
_parameters.RequiredHqlParameters.Add(new NamedParameterDescriptor(namedParameter.Name, null, false));
if (namedParameter.Value is bool)
{
return(_hqlTreeBuilder.Equality(_hqlTreeBuilder.Parameter(namedParameter.Name).AsExpression(), _hqlTreeBuilder.Constant(true)));
}
return(_hqlTreeBuilder.Parameter(namedParameter.Name).AsExpression());
}
return(_hqlTreeBuilder.Constant(expression.Value));
}