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));
}
CamlExpression expression = Caml.False;
foreach (SPModelFieldAssociation association in this.FieldAssociations)
{
SPModelQueryFieldInfo fieldInfo = new SPModelQueryFieldInfo(visitor.Manager.Site, association);
if (this.FieldAssociations.Fields.Count == 1)
{
return(expressionFactory(fieldInfo));
}
expression |= (association.Descriptor.GetContentTypeExpression(visitor.Manager.Descriptor) + expressionFactory(fieldInfo));
}
return(expression);
}
private CamlExpression HandleEqualityComparison(SPModelQueryFieldInfo s, CamlBinaryOperator op)
{
ICamlParameterBinding value = currentScope.GetValueBinding(s);
CamlExpression expression = new CamlWhereBinaryComparisonExpression(op, s.FieldRef, value);
Type memberType = currentScope.MemberType;
if (memberType.IsGenericType && memberType.GetGenericTypeDefinition() == typeof(Nullable <>))
{
memberType = memberType.GetGenericArguments()[0];
}
if (memberType.IsValueType || memberType == typeof(string))
{
string defaultValue = value.Bind(new Hashtable {
{ currentScope.ParameterName, memberType.IsValueType ? memberType.GetDefaultValue() : "" }
});
CamlExpression lateBoundCond = new CamlLateBoundDefaultValueAsNullExpression(s.FieldRef, value, defaultValue);
return(op == CamlBinaryOperator.Eq ? expression | lateBoundCond : expression& ~lateBoundCond);
}
return(expression);
}
private CamlExpression HandleNullExpression(SPModelQueryFieldInfo field, bool negate)
{
CamlExpression expression = Caml.IsNull(field.FieldRef);
if (field.FieldTypeAsString == "TaxonomyFieldType" || field.FieldTypeAsString == "TaxonomyFieldTypeMulti")
{
SPList taxonomyHiddenList = SPExtensionHelper.GetTaxonomyHiddenList(manager.Site);
foreach (SPListItem item in taxonomyHiddenList.GetItems("IdForTerm"))
{
if (manager.TermStore.GetTerm(new Guid((string)item["IdForTerm"])) == null)
{
expression |= Caml.LookupIdEquals(field.FieldRef, item.ID);
}
}
}
if (negate)
{
return(~expression);
}
return(expression);
}
public ICamlParameterBinding GetValueBinding(SPModelQueryFieldInfo s)
{
return(CamlParameterBinding.GetValueBinding(visitor.Manager.Site, s.FieldType, s.FieldTypeAsString, s.IncludeTimeValue, this.MemberType, this.Value));
}
