protected bool HandleAddressOrIdEquals(Expression left, Expression right)
{
string itemName = null;
PropertyHint propertyHint = GetPropertyHint(left);
if (propertyHint == null ||
!(propertyHint.MappingType == PropertyMappingType.Address ||
propertyHint.MappingType == PropertyMappingType.Id))
{
return(false);
}
if (left is SelectVariableNameExpression)
{
itemName = (left as SelectVariableNameExpression).Name;
}
else if (left is MemberExpression)
{
var m = left as MemberExpression;
if (m.Expression is QuerySourceReferenceExpression)
{
itemName = (m.Expression as QuerySourceReferenceExpression).ReferencedQuerySource.ItemName;
}
else
{
var visitResult = VisitMemberExpression(m);
if (visitResult is SelectVariableNameExpression)
{
itemName = (visitResult as SelectVariableNameExpression).Name;
}
}
}
if (itemName == null)
{
return(false);
}
var constantExpression = right as ConstantExpression;
if (constantExpression == null)
{
return(false);
}
string address = null;
if (propertyHint.MappingType == PropertyMappingType.Id)
{
address = MakeResourceAddress(GetPropertyInfo(left), constantExpression.Value.ToString());
}
else if (propertyHint.MappingType == PropertyMappingType.Address)
{
address = constantExpression.Value.ToString();
}
if (address != null)
{
if (QueryBuilder.SelectVariables.Contains(itemName))
{
QueryBuilder.AddFilterExpression(String.Format("(?{0}=<{1}>)", itemName, address));
}
else
{
QueryBuilder.ConvertVariableToConstantUri(itemName, address);
}
return(true);
}
return(false);
}
