public Validator AddRule(Type type, IValidator validator, ErrorMessage msg)
{
ValidationUnitCollection coll = GetRules(type);
coll.Add(ValidationUnit.CreateValidationUnit(msg, validator));
return(this);
}
/// <summary>
/// Recursive scan type to find all validator defined for each object of the graph.
/// </summary>
/// <param name="list"></param>
/// <param name="loadList"></param>
/// <param name="typeToCheck"></param>
private void RecursivePopulate(
Type typeToCheck,
Dictionary <Type, ValidationUnitCollection> list,
IList <Type> loadList)
{
//first check if the type was already loaded or is in ignorelist.
if (list.ContainsKey(typeToCheck))
{
return;
}
//Type is not contained so it is necessary to check, first prepare parameter collections
List <Type> relatedTypes = new List <Type>();
ValidationUnitCollection vc = new ValidationUnitCollection();
list.Add(typeToCheck, vc);
loadList.Add(typeToCheck);
//Then scan for property or fields.
ScanForTypeAttributes(typeToCheck, vc);
ScanForField(typeToCheck, vc, relatedTypes);
ScanForProperty(typeToCheck, vc, relatedTypes);
relatedTypes.ForEach(delegate(Type ty)
{
RecursivePopulate(ty, list, loadList);
});
}
/// <summary>
/// This function scan type of object to find all validators related to object themselves.
/// </summary>
/// <param name="ty"></param>
public ValidationUnitCollection Scan()
{
ValidationUnitCollection vc = new ValidationUnitCollection();
PopulateValidationUnitcollection(vc);
return(vc);
}
/// <summary>
/// This function populate the collection
/// </summary>
/// <param name="vc"></param>
/// <returns>This function return the inner list of all type that are
/// used in field And/Or property</returns>
private void PopulateValidationUnitcollection(
ValidationUnitCollection vc)
{
ScanForTypeAttributes(mType, vc);
ScanForField(mType, vc, null);
ScanForProperty(mType, vc, null);
}
/// <summary>
/// Scan the type and check if there are some attributes defined on the whole type.
/// </summary>
/// <param name="typeToCheck"></param>
/// <param name="vc"></param>
private void ScanForTypeAttributes(
Type typeToCheck,
ValidationUnitCollection vc)
{
object[] validationfields = typeToCheck.GetCustomAttributes(typeof(BaseValidationAttribute), false);
BuildValidationUnitFromAttributeList(vc, new ObjectValueExtractor(), validationfields);
}
/// <summary>
///
/// </summary>
/// <param name="objToValidate">The object that is being validated.</param>
/// <param name="validationFlags">Options used to decide how validation is performed</param>
/// <returns></returns>
public ValidationResult ValidateObject(
object objToValidate,
ValidationFlags validationFlags)
{
ValidationUnitCollection rules = GetRules(objToValidate);
ValidationResult result = new ValidationResult();
return(rules.ValidateObject(result, objToValidate, validationFlags));
}
/// <summary>
/// Scan all fields of the type and populate both the collection of rules and other types encountered.
/// </summary>
/// <param name="vc"></param>
/// <param name="fieldTypes"></param>
private void ScanForField(
Type typeToCheck,
ValidationUnitCollection vc,
List <Type> fieldTypes)
{
FieldInfo[] afi = typeToCheck.GetFields(BindingFlags.Instance | BindingFlags.Public);
foreach (FieldInfo fi in afi)
{
object[] validationfields = fi.GetCustomAttributes(typeof(BaseValidationAttribute), false);
BuildValidationUnitFromAttributeList(vc, new FieldInfoValueExtractor(fi), validationfields);
PopulateDescendantList(fi.FieldType, fieldTypes);
}
}
private void ScanForProperty(
Type typeToCheck,
ValidationUnitCollection vc,
List <Type> propertyTypes)
{
PropertyInfo[] api = typeToCheck.GetProperties(BindingFlags.Instance | BindingFlags.Public);
foreach (PropertyInfo pi in api)
{
object[] validationfields = pi.GetCustomAttributes(typeof(BaseValidationAttribute), false);
BuildValidationUnitFromAttributeList(vc, new PropertyInfoValueExtractor(pi), validationfields);
PopulateDescendantList(pi.PropertyType, propertyTypes);
}
}
/// <summary>
/// Given an array of object of validation attributes create all
/// requested ValidationUnits.
/// </summary>
/// <param name="vc"></param>
///<param name="valueExtractor">The value extractor proposed by the caller
/// the real value extractor can be overriden by the attribute.</param>
/// <param name="validationfields"></param>
private static void BuildValidationUnitFromAttributeList(
ValidationUnitCollection vc,
IValueExtractor valueExtractor,
object[] validationfields)
{
foreach (BaseValidationAttribute va in validationfields)
{
if (va.IsValueExtractorOverriden)
valueExtractor = va.CreateValueExtractor();
vc.Add( ValidationUnit.CreateValidationUnit(
va.CreateErrorMessage(),
va.CreateValidator(valueExtractor)));
}
}
/// <summary>
/// This function scan type of object to find all validators related to object themselves.
/// This new version check actually for each type in object graph.
/// </summary>
/// <param name="ty"></param>
public void ScanTypeForAttribute(Type ty, Boolean recursive)
{
//Create and add the collection to this type
TypeScanner ts = new TypeScanner(ty);
if (recursive)
{
ts.RecursiveScan(mValidationRules);
}
else
{
ValidationUnitCollection vc = ts.Scan();
mValidationRules.Add(ty, vc);
}
}
/// <summary>
/// Given an array of object of validation attributes create all
/// requested ValidationUnits.
/// </summary>
/// <param name="vc"></param>
///<param name="valueExtractor">The value extractor proposed by the caller
/// the real value extractor can be overriden by the attribute.</param>
/// <param name="validationfields"></param>
private static void BuildValidationUnitFromAttributeList(
ValidationUnitCollection vc,
IValueExtractor valueExtractor,
object[] validationfields)
{
foreach (BaseValidationAttribute va in validationfields)
{
if (va.IsValueExtractorOverriden)
{
valueExtractor = va.CreateValueExtractor();
}
vc.Add(ValidationUnit.CreateValidationUnit(
va.CreateErrorMessage(),
va.CreateValidator(valueExtractor)));
}
}
/// <summary>
/// This function populate the collection
/// </summary>
/// <param name="vc"></param>
/// <returns>This function return the inner list of all type that are
/// used in field And/Or property</returns>
private void PopulateValidationUnitcollection(
ValidationUnitCollection vc)
{
ScanForTypeAttributes(mType, vc);
ScanForField(mType, vc, null);
ScanForProperty(mType, vc, null);
}
/// <summary>
/// Recursive scan type to find all validator defined for each object of the graph.
/// </summary>
/// <param name="list"></param>
/// <param name="loadList"></param>
/// <param name="typeToCheck"></param>
private void RecursivePopulate(
Type typeToCheck,
Dictionary<Type, ValidationUnitCollection> list,
IList<Type> loadList)
{
//first check if the type was already loaded or is in ignorelist.
if (list.ContainsKey(typeToCheck)) return;
//Type is not contained so it is necessary to check, first prepare parameter collections
List<Type> relatedTypes = new List<Type>();
ValidationUnitCollection vc = new ValidationUnitCollection();
list.Add(typeToCheck, vc);
loadList.Add(typeToCheck);
//Then scan for property or fields.
ScanForTypeAttributes(typeToCheck, vc);
ScanForField(typeToCheck, vc, relatedTypes);
ScanForProperty(typeToCheck, vc, relatedTypes);
relatedTypes.ForEach(delegate(Type ty)
{
RecursivePopulate(ty, list, loadList);
});
}
/// <summary>
/// Scan all fields of the type and populate both the collection of rules and other types encountered.
/// </summary>
/// <param name="vc"></param>
/// <param name="fieldTypes"></param>
private void ScanForField(
Type typeToCheck,
ValidationUnitCollection vc,
List<Type> fieldTypes)
{
FieldInfo[] afi = typeToCheck.GetFields(BindingFlags.Instance | BindingFlags.Public);
foreach (FieldInfo fi in afi)
{
object[] validationfields = fi.GetCustomAttributes(typeof(BaseValidationAttribute), false);
BuildValidationUnitFromAttributeList(vc, new FieldInfoValueExtractor(fi), validationfields);
PopulateDescendantList(fi.FieldType, fieldTypes);
}
}
private void ScanForProperty(
Type typeToCheck,
ValidationUnitCollection vc,
List<Type> propertyTypes)
{
PropertyInfo[] api = typeToCheck.GetProperties(BindingFlags.Instance | BindingFlags.Public);
foreach (PropertyInfo pi in api)
{
object[] validationfields = pi.GetCustomAttributes(typeof(BaseValidationAttribute), false);
BuildValidationUnitFromAttributeList(vc, new PropertyInfoValueExtractor(pi), validationfields);
PopulateDescendantList(pi.PropertyType, propertyTypes);
}
}
/// <summary>
/// Scan the type and check if there are some attributes defined on the whole type.
/// </summary>
/// <param name="typeToCheck"></param>
/// <param name="vc"></param>
private void ScanForTypeAttributes(
Type typeToCheck,
ValidationUnitCollection vc)
{
object[] validationfields = typeToCheck.GetCustomAttributes(typeof(BaseValidationAttribute), false);
BuildValidationUnitFromAttributeList(vc, new ObjectValueExtractor(), validationfields);
}
/// <summary>
/// This function scan type of object to find all validators related to object themselves.
/// </summary>
/// <param name="ty"></param>
public ValidationUnitCollection Scan()
{
ValidationUnitCollection vc = new ValidationUnitCollection();
PopulateValidationUnitcollection(vc);
return vc;
}
