public CamlExpression GetExpression(Func <SPModelQueryFieldInfo, CamlExpression> expressionFactory, bool checkOrderable)
{
CommonHelper.AccessNotNull(expressionFactory, "expressionFactory");
if (this.FieldAssociations == null)
{
CommonHelper.AccessNotNull(this.Field.FieldRef, "FieldRef");
return(expressionFactory(this.Field));
}
if (!this.FieldAssociations.Queryable)
{
throw new Exception(String.Format("Member '{0}' must have exactly one SPFieldAttribute with IncludeInQuery set to true", this.Member.Name));
}
if (this.FieldAssociations.Fields.Count > 1 && checkOrderable)
{
throw new Exception(String.Format("Member '{0}' cannot be used in ordering", this.Member.Name));
}
if (definedValue != null)
{
foreach (SPModelFieldAssociation association in this.FieldAssociations)
{
if (association.QueryProperty != null && definedValue.GetType().IsOf(association.QueryProperty.DeclaringType))
{
definedValue = association.QueryProperty.GetValue <object>(definedValue);
break;
}
}
}
CamlExpression expression = Caml.False;
foreach (SPModelFieldAssociation association in this.FieldAssociations)
{
SPModelQueryFieldInfo fieldInfo = new SPModelQueryFieldInfo(visitor.Manager.Site, association);
if (visitor.IsFieldAllowed(fieldInfo.FieldRef))
{
if (this.FieldAssociations.Fields.Count == 1)
{
return(expressionFactory(fieldInfo));
}
expression |= (association.Descriptor.GetContentTypeExpression(visitor.Manager.Descriptor) + expressionFactory(fieldInfo));
}
}
return(expression);
}
