public void Validate(Expression <Func <T, bool> > predicate)
{
if (!predicate.Compile(true).Invoke(item))
{
var memberValues = ExpressionDumper <T> .DumpMemberValues(item, predicate);
var message = string.Format($"{predicate.ToThisBodyString()}, {memberValues}, {BuildPkMessage()}");
resultSet.AddFail(typeof(T), "Validate failed: " + message, item);
}
}
public void Unique <TProperty>(Expression <Func <TElement, TProperty> > selector, IEqualityComparer <TProperty> equalityComparer)
{
var f = selector.Compile(true);
var set = new HashSet <TProperty>(equalityComparer);
foreach (var item in tableData)
{
var v = f(item);
if (!set.Add(v))
{
resultSet.AddFail(typeof(TElement), "Unique failed:" + selector.ToSpaceBodyString() + ", value = " + v + ", " + BuildPkMessage(item), item);
}
}
}
public void Exists <TProperty>(Expression <Func <TElement, TProperty> > elementSelector, Expression <Func <TReference, TProperty> > referenceElementSelector, EqualityComparer <TProperty> equalityComparer)
{
var f1 = elementSelector.Compile(true);
var f2 = referenceElementSelector.Compile(true);
var compareBase = f1(item);
foreach (var refItem in referenceTable)
{
if (equalityComparer.Equals(compareBase, f2(refItem)))
{
return;
}
}
// not found, assert.
var from = elementSelector.ToNameBodyString(typeof(TElement).Name);
var to = referenceElementSelector.ToNameBodyString(typeof(TReference).Name);
resultSet.AddFail(typeof(TElement), "Exists failed: " + from + " -> " + to + ", value = " + compareBase + ", " + BuildPkMessage(), item);
}