public void SimpleUnusableOrTest()
{
Expression <Func <Person, Child, bool> > ex =
(p, c) => p.Id1 == c.ParentId1 || p.DOB == DateTime.MinValue;
var result = EntityMatchWalker.ExtractKeyNodes(ex, ex.Parameters[0], ex.Parameters[1]);
Assert.AreEqual(0, result.Item1.Count);
Assert.AreEqual(0, result.Item2.Count);
}
public void ComplexNotNotEqualTest2()
{
Expression <Func <Person, Child, bool> > ex =
(p, c) => !(p.Id1 + 4 != c.ParentId1 + 9) && (p.DOB == DateTime.MinValue || p.DOB == DateTime.MaxValue);
var result = EntityMatchWalker.ExtractKeyNodes(ex, ex.Parameters[0], ex.Parameters[1]);
Assert.AreEqual(1, result.Item1.Count);
Assert.AreEqual(1, result.Item2.Count);
}
public void NotNotEqualTest()
{
Expression <Func <Person, Child, bool> > ex =
(p, c) => !(p.Id1 != c.ParentId1);
var result = EntityMatchWalker.ExtractKeyNodes(ex, ex.Parameters[0], ex.Parameters[1]);
Assert.AreEqual(1, result.Item1.Count);
Assert.AreEqual(1, result.Item2.Count);
}
public void KeyExtractionTest()
{
//Expression<Func<Person, Order, bool>> exp = (p, o) => p.PersonId == o.PersonId && p.LastName == o.OrderNumber;
Expression <Func <Person, Order, bool> > exp = (p, o) => p.PersonId == o.PersonId && "S0003456" == o.OrderNumber;
var result = EntityMatchWalker.ExtractKeyNodes(exp, exp.Parameters.First(), exp.Parameters.ElementAt(1));
var thisKeys = result.Item1;
var otherKeys = result.Item2;
}
public void TwoEqualsAndBetweenTest()
{
Expression <Func <Person, Child, bool> > ex =
(p, c) => p.Id1 == c.ParentId1 && p.Id2 == c.ParentId2 &&
p.DOB >= c.DateStart && p.DOB <= c.DateEnd;
var result = EntityMatchWalker.ExtractKeyNodes(ex, ex.Parameters[0], ex.Parameters[1]);
Assert.AreEqual(2, result.Item1.Count);
Assert.AreEqual(2, result.Item2.Count);
Assert.AreEqual(typeof(Person).GetProperty(nameof(Person.Id1)), ((MemberExpression)result.Item1[0]).Member);
Assert.AreEqual(typeof(Person).GetProperty(nameof(Person.Id2)), ((MemberExpression)result.Item1[1]).Member);
Assert.AreEqual(typeof(Child).GetProperty(nameof(Child.ParentId1)), ((MemberExpression)result.Item2[0]).Member);
Assert.AreEqual(typeof(Child).GetProperty(nameof(Child.ParentId2)), ((MemberExpression)result.Item2[1]).Member);
}
public RelationshipComparer(Expression <Func <TKey, TValue, bool> > expression)
{
var keyParam = expression.Parameters[0];
var valueParam = expression.Parameters[1];
var results = EntityMatchWalker.ExtractKeyNodes(expression, keyParam, valueParam);
var keyExpressions = results.Item1;
var valueExpressions = results.Item2;
if (results.Item1.Count == 0 || results.Item2.Count == 0)
{
IsExpressionInvalid = true;
return;
}
KeyKeyMatcher = CreateMatchExpression <TKey, TKey>(keyParam, keyExpressions, keyExpressions);
KeyValueMatcher = expression.Compile();
KeyHasherFunc = CreateHashCode <TKey>(keyExpressions, keyParam);
ValueHasherFunc = CreateHashCode <TValue>(valueExpressions, valueParam);
}
public void ComplexEqualsTest()
{
Expression <Func <Person, Child, bool> > ex =
(p, c) => p.Id1 + 3 == c.ParentId1 + 6;
var result = EntityMatchWalker.ExtractKeyNodes(ex, ex.Parameters[0], ex.Parameters[1]);
Assert.AreEqual(1, result.Item1.Count);
Assert.AreEqual(1, result.Item2.Count);
var func1 = Expression.Lambda <Func <Person, int> >(result.Item1.First(), ex.Parameters[0]).Compile();
Assert.AreEqual(8, func1(new Person {
Id1 = 5
}));
var func2 = Expression.Lambda <Func <Child, int> >(result.Item2.First(), ex.Parameters[1]).Compile();
Assert.AreEqual(16, func2(new Child {
ParentId1 = 10
}));
}
public void EqualsWithMethodTest()
{
Expression <Func <Person, Child, bool> > ex =
(p, c) => p.Name.First() == c.ParentId1.ToString().First();
var result = EntityMatchWalker.ExtractKeyNodes(ex, ex.Parameters[0], ex.Parameters[1]);
Assert.AreEqual(1, result.Item1.Count);
Assert.AreEqual(1, result.Item2.Count);
var func1 = Expression.Lambda <Func <Person, int> >(result.Item1.First(), ex.Parameters[0]).Compile();
Assert.AreEqual('W', func1(new Person {
Name = "William"
}));
var func2 = Expression.Lambda <Func <Child, int> >(result.Item2.First(), ex.Parameters[1]).Compile();
Assert.AreEqual('1', func2(new Child {
ParentId1 = 1234
}));
}
